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Project Overview

We are undertaking a detailed engineering revamp of an industrial polymerization reactor used for HPEG, TPEG, IPEG, and EPEG production. The project requires both mechanical design completion and CFD/thermal validation to finalize fabrication, procurement, and installation packages.

We are looking for an experienced engineer or engineering team with expertise in:

* SolidWorks mechanical design of process equipment
* ANSYS Fluent / CFD simulation
* Agitated vessel design
* Heat transfer and cooling system analysis
* Chemical reactor engineering
* Fabrication drawing development

The work may be awarded to one multidisciplinary consultant or split between two specialists.

---

## Scope 1: SolidWorks Mechanical Design Package

### Existing Design Data Available

The reactor design basis is already established, including:

* Reactor shell dimensions

* ID = 2000 mm
* T/T = 2952 mm
* Dished heads
* 10 mm shell thickness

* Complete nozzle schedule (N1–N22)

* Agitator shaft concept

* 110 mm diameter
* 3900 mm length

* Impeller arrangement:

* Bottom PBT impeller (700 mm)
* Three hydrofoils (950 mm diameter)

* Internal cooling coil

* External limpet coil

* Dip tubes (DT-201, DT-202, DT-203)

* Mechanical seal specification (API Plan 53B)

* Gearbox and motor selection (30 kW)

* Existing support arrangement

### Required Deliverables

The selected freelancer will develop:

* Complete 3D SolidWorks reactor assembly
* General Arrangement (GA) drawings
* Nozzle orientation drawings
* Agitator assembly drawings
* Shaft manufacturing drawings
* Impeller fabrication drawings
* Internal coil fabrication drawings
* Limpet coil fabrication drawings
* Dip tube fabrication drawings
* Mechanical seal assembly details
* Structural support drawings
* Complete Bill of Materials (BOM)
* Weight report
* Interference/clash detection report
* Procurement-ready fabrication package

### Desired Experience

* Pressure vessels
* Mixing equipment
* Agitated reactors
* Chemical process equipment
* ASME vessel design
* Fabrication detailing

---

## Scope 2: ANSYS Fluent / CFD Thermal Validation Package

### Objective

Validate reactor performance before fabrication through CFD and thermal analysis.

### Studies Required

#### Mixing Performance

* Mixing time prediction
* 95% homogenization assessment
* Velocity field analysis
* Dead-zone identification
* Turbulence intensity mapping
* Vortex analysis

#### Feed Dispersion Analysis

Evaluate feed injection systems:

* DT-201
* DT-202
* DT-203

Outputs required:

* Feed plume trajectories
* Dispersion quality
* Concentration distribution
* Feed interaction assessment

#### Heat Transfer Validation

Evaluate:

* Internal cooling coil
* Limpet cooling coil
* Steam heating system

Required outputs:

* Heat-transfer coefficient prediction
* Overall U-value validation
* Temperature distribution
* Hot-spot identification
* Cooling capacity verification
* Heating profile verification

#### Process Safety Assessment

Analyze:

* Hydrogen peroxide concentration distribution
* Acrylic acid concentration distribution
* Exothermic reaction behavior
* Thermal runaway risks
* Gas entrainment potential
* Foam generation potential

#### Mechanical Verification Support

Provide:

* Impeller power draw prediction
* Torque profile
* Hydraulic shaft loading
* Dynamic load assessment

### Expected Deliverables

* CFD model setup documentation
* Mesh report
* Mixing study report
* Species transport report
* Heat transfer report
* Cooling validation report
* Mechanical load report
* Executive summary with engineering recommendations

---

## Software Requirements

### Mechanical Design

* SolidWorks (preferred)
* AutoCAD (supporting documentation)

### Simulation

* ANSYS Fluent
* ANSYS Meshing
* CFD Post

Equivalent professional CFD software may be considered if justified.

---

## Proposal Requirements

Please include:

1. Relevant reactor, mixing vessel, or chemical equipment projects.
2. Examples of fabrication drawings completed.
3. Examples of CFD studies involving:

* Mixing
* Heat transfer
* Agitated vessels
* Chemical reactors
4. Proposed timeline.
5. Estimated hours and rate.
6. Whether you can perform:

* Mechanical design only
* CFD only
* Both disciplines

---

## Preferred Background

We are particularly interested in engineers with experience in:

* Polymer reactors
* EO/PO derivative plants
* PEG production systems
* Specialty chemicals
* Process scale-up
* Industrial mixing systems
* Heat transfer equipment

The goal is to produce a complete fabrication-ready reactor package validated through CFD and thermal analysis before procurement and construction.

Senior Architect — Ressa Design Collective
About the Role

Ressa Design Collective is looking for an experienced architect to join our team, with a strong background in permitting and a versatile portfolio spanning residential projects, restaurant design, furniture placement and spatial planning, and retail pop-up concepts. This role is ideal for someone who thrives on variety and can move fluidly between long-term residential builds and fast-turnaround commercial activations.
Key Responsibilities

Lead and manage the permitting process across residential, commercial, and temporary-use projects, including coordination with local jurisdictions, zoning boards, and inspectors
Design and oversee residential architecture projects from concept through construction documentation
Develop restaurant layouts that balance code compliance (egress, ADA, health department requirements) with guest experience and operational flow
Plan furniture placement and spatial layouts for both residential and commercial clients, considering traffic flow, functionality, and aesthetic intent
Design and execute retail pop-up concepts, including temporary structures, signage, and fast-build solutions
Collaborate with interior designers, contractors, and clients to ensure design intent carries through to execution
Prepare and review architectural drawings, permit sets, and construction documents
Stay current on local building codes, zoning regulations, and permitting requirements

Qualifications

Bachelor's or Master's degree in Architecture from an accredited program
Licensed architect (or actively pursuing licensure) preferred
5+ years of professional experience, with demonstrated work across residential and commercial/retail projects
Proven track record successfully navigating permit applications and approvals
Proficiency in design software (AutoCAD, Revit, SketchUp, Adobe Creative Suite)
Strong understanding of furniture layout principles and spatial design for hospitality or retail environments
Excellent communication skills for client-facing and cross-team collaboration
Ability to manage multiple projects with varying timelines, from quick pop-up turnarounds to longer residential builds

What We Offer

Collaborative studio environment with a diverse project portfolio
Opportunity to shape both creative direction and practical execution across project types
[Add: compensation range, location/remote policy, benefits]

I am the principal of an interior design firm in the United States. I'm looking for an individual that's an expert in interior design. The role involves creating high-quality presentations for luxury residential projects. Once approved, you will be responsible to produce the construction documents independantly without oversight. The ideal candidate will have experience in using Autocad, Photoshop/ InDesign, and 3D renderings software to produce photorealistic renderings.

We are seeking an experienced Autocad Electrical Drafting expert to create detailed electrical drawings for our projects. The ideal candidate will have a strong understanding of electrical systems and be proficient in using Autocad software. Responsibilities include creating and editing electrical drawings, ensuring accuracy and compliance with industry standards, and collaborating with our team to meet project deadlines. If you have a passion for electrical drafting and a keen eye for detail, we would love to hear from you!

I'm a Bay Area based residential interior designer (Lost and Found) seeking an ongoing CAD partner to support my project drawings.

About the work

I work on high-end residential projects and need clean, presentation-ready CAD drawings to support my design work, client presentations, and contractor coordination. The first project is a luxury apartment in the Bay Area (eight rooms plus an outdoor balcony), with additional projects in the pipeline. I'd love to build a long-term working relationship.

Scope of work for the first project (Springline)
Floor plans for each of eight rooms (Living Room, Dining Room, Primary Bedroom, Primary Bathroom, two kids' rooms, Kids' Bathroom, Hallway Nook), plus an outdoor balcony. Each plan to show furniture placement at scale, rug footprints, lighting positions on the floor, and room dimensions.

Note: the Living Room and Dining Room share one open floor plan but should be designed as two distinct functional zones.

Elevation drawings for selected walls, with priority on:
Hallway Nook wall featuring hand-painted de Gournay wallpaper. Requires precise dimensions and detail mapping for the de Gournay studio to plan the painted panels.

Two additional walls in rooms with patterned wallpaper (Phillip Jeffries grasscloth and Farrow & Ball Broad Stripe) where panel layout matters.
Living Room walls showing furniture placement and paint specifications.

Primary Bedroom showing furniture, wallpaper boundaries, and window treatments (Note: revised draft will be done after the early July meeting).

Lighting plans, simplified format only. Floor-plan markup showing position of pendants, chandeliers, and recessed cans per room, plus basic switching notes (which switch controls what). No elevation work needed for lighting because fixtures are limited to ceiling-mounted (no wall sconces requiring mounting-height callouts). Paired with a simple fixture schedule listing each item with vendor and spec.
Material and finish schedules tied to plan locations (floor, wall, ceiling, trim per room).

What I’m looking for

Designer or architect comfortable working in AutoCAD, SketchUp, or Revit (whatever your preferred tool, I'm flexible).

Clean, presentation-ready output. The drawings will be shared with clients, contractors, and renderers.

Experience with high-end residential projects preferred. Familiarity with brands like Pierre Frey, Phillip Jeffries, and de Gournay is a plus but not required.

Comfortable working from my marked-up photos and dimensional sketches rather than only from architect-supplied plans. I have detailed site notes I can hand off as inputs.

Practical notes on the work
For outlets and switches, I'll spec standard heights (outlets 15 inches, switches 48 inches from floor) unless I call out a specific position. Focus elevation accuracy on ceiling fixtures, art placement, wallpaper boundaries, and architectural built-ins.

I work primarily from photos and field measurements when architectural plans do not exist (this is one such apartment). Comfort drawing from photos and notes is important.
I'll provide a written scope per drawing with reference images, dimensions, and design intent.

To apply, please share
Three to five samples of your past work, especially residential floor plans, elevations, and lighting plans.
Your rate (per drawing, per project, or per hour, whatever you prefer).

Your typical turnaround for floor plans, elevations, and lighting plans.

Any reference designers, architects, or studios you've worked with.
Your preferred file delivery format (PDF, AutoCAD, SketchUp, Revit).

Project timing
I have a client meeting scheduled for July 3, 4, or 5. To meet that timeline, I need the first round of drawings completed within one week of hiring. I'm willing to pay above standard rates for the speed.

A note on the first deliverable
I'm starting our working relationship with one paid deliverable (the outdoor balcony drawing) as a working-fit check. This is paid work at your standard rate, not spec work. You'll be compensated for the deliverable regardless of whether we continue together.

If the first deliverable is strong (clean output, good communication, on-time turnaround), we'll move forward with the full Round 1 scope due by end of June and an ongoing partnership across additional projects in my pipeline. If we're not the right fit for either of us, you're still paid for the work you completed.

This approach protects both of us: you're paid for real work, I get to evaluate fit on a small scope before committing to the full project.

Round 1 (week 1 from hire, ideal completion by June 27th):
All deliverables needed for the July 3 to 5 client meeting. Includes all eight floor plans plus the outdoor balcony with furniture placement and lighting markup, priority elevations for Living Room, Hallway Nook (de Gournay wall), and Primary Bedroom, and initial material schedules for those three rooms.

Note that the Living Room and Dining Room share one open floor plan but should be designed as two distinct functional zones
Round 2 (ideal completion by June 30th):
Remaining elevations for other rooms.
Final material schedules across all spaces.
Any revisions from round 1.

Round 3 (post-meeting, week of July 6)
2nd drafts of Primary Bedroom

I'm targeting a long-term ongoing partnership across additional Bay Area residential projects in my pipeline. The right freelancer becomes my CAD partner going forward. Future projects will have longer lead times.

Looking forward to hearing from you.

Custom Kitchen Cabinet Shop and Interior Design Firm, seeking help to create kitchen cabinets, closets, and general interior room design using SketchUp, AutoCAD 20/20, or other CAD programs.

We are seeking a skilled freelancer to convert images, PDFs, sketches, and floor plans into AutoCAD DWG format. The ideal candidate will have experience in architectural drafting and be proficient in using AutoCAD software. Attention to detail and accuracy are crucial for this role. If you have a strong background in CAD design and can deliver high-quality conversions, we would love to hear from you.

We are seeking a skilled freelancer to convert images, PDFs, sketches, and floor plans into AutoCAD DWG format. The ideal candidate will have experience in architectural drafting and be proficient in using AutoCAD software. Attention to detail and accuracy are crucial for this role. If you have a strong background in CAD design and can deliver high-quality conversions, we would love to hear from you.

Summary
Part-Time Interior Designer – High-End Commercial & Hospitality Venue

Role Overview
You’ll work closely with our business owner. You collaborate and help implement design ideas/revisions and product selection.

Responsibilities
- Space planning and layout development
- Design from concept through completion
- FF&E, material, and finish selections
- Specifications, schedules, and drawings
- Design presentations and revisions based on client feedback

Requirements
- Proven experience in high-end hospitality design
- Strong eye for detail, materials, and furnishings
- Proficiency in AutoCAD, SketchUp/Revit, and Adobe (or similar)
- Organized, reliable, and comfortable working independently

Hours
- Part-time, flexible
- Up to 20 hours/week, depending on project needs

Seeking a skilled freelancer to modify a heating system arrangement and some piping using AutoCAD or AutoCAD Plant 3D. The task requires precision and attention to detail to ensure accurate modifications. Ideal candidates will have experience in mechanical design and piping systems. This is a part-time project with a short duration, expected to be completed in less than a month.

Seeking a skilled freelancer to modify a small skid and some piping using AutoCAD or AutoCAD Plant 3D. The task requires precision and attention to detail to ensure accurate modifications. Ideal candidates will have experience in mechanical design and piping systems. This is a part-time project with a short duration, expected to be completed in less than a month.

Seeking a residential draftsperson with experience in Pima County, Arizona, for a home addition and remodel of an adobe home built in 1977. Candidates must have skills in architectural drafting and AutoCAD or Revit, and be familiar with permitting, local building codes and regulations. Deliverables will include permit ready construction documents.

Project scope includes:

* Two new bedrooms
* Window reconfiguration including resized window openings
* Great Room reconfiguration demanding coordination with a structural engineer to open a load-bearing wall between the existing kitchen and living room.

Partial drawings exist, including floor plans and elevations based on drawings produced by the homeowner in an iPhone app called MagicPlan. Availability to move project to the finish line quickly is a top priority.

We’re looking for an experienced HVAC Drafter to help prepare mechanical drawings for a new boutique hotel project in Novi Sad, Serbia.

Project Details
6-story hotel with 48 guest rooms

Restaurant, lobby, and rooftop lounge

Approx. 4,200 m² total area

Scope of Work

Draft HVAC floor plans and duct layouts

Create chilled water and ventilation drawings

Coordinate with architectural plans

Update drawings based on engineer markups

Requirements

3+ years of HVAC drafting experience

Proficiency in Revit and AutoCAD

Experience with hotel or commercial projects preferred

Ability to work independently and meet deadlines

Project Timeline

Duration: 4–6 weeks

Workload: 20–30 hours/week

Overview
We are looking for a freelance water treatment engineer to support us on a project-by-project basis across a range of industrial and municipal water and wastewater treatment projects, with a primary focus on industrial applications.
You will collaborate with an experienced engineering team on the design, optimization, and delivery of advanced treatment systems.

About Us
We are an established company specialized in the design, manufacturing, installation, and management of industrial wastewater treatment and water recycling plants, with over 35 years of experience in the sector and part of a broader international group. [01_Pres_Co...compressed | PDF]
Our expertise covers a wide range of technologies, including:

Biological treatment (SBR, MBR, MBBR)
Chemical-physical processes (DAF, electrocoagulation, ozonation, etc.)
Membrane systems (Ultrafiltration, Reverse Osmosis)
Advanced solutions for water reuse and Zero Liquid Discharge (ZLD) [01_Pres_Co...compressed | PDF]

We operate across multiple industries such as textile, food & beverage, oil & gas, chemicals, and more. [01_Pres_Co...compressed | PDF]

Scope of Work
Depending on the project and your experience, your tasks may include:

Process design and sizing of treatment plants
Development of PFDs, P&IDs, and technical documentation
Process calculations and system optimization
Support in proposal/tender preparation
Troubleshooting and performance improvement of existing plants
Support during commissioning or remote technical assistance


Desired Experience
We are open to engineers with varying levels of experience, but ideal candidates will have:

Experience in industrial water/wastewater treatment
Familiarity with technologies such as:

RO, UF/MF
Biological processes (SBR, MBR, MBBR)
Chemical-physical treatment systems


Strong understanding of treatment process design and operation
Experience with engineering tools (e.g., AutoCAD or similar) is a plus


Engagement Model

📌 Project-based / freelance collaboration
🌍 Remote work (global candidates welcome)
⏱ Workload varies depending on project needs
💬 Compensation: to be discussed based on experience and scope


What We’re Looking For

Reliable and responsive freelance partner
Strong problem-solving mindset
Ability to work independently and deliver high-quality engineering outputs
Clear communication in an international environment


How to Apply
Please include:

A short description of your relevant experience
Key projects you have worked on (especially industrial wastewater)
Technical areas of expertise
Availability and expected rate

Fire Safety Design student seeking 1-on-1 AutoCAD mentor. To help with producing basic AutoCAD drawings that involve cover sheet, title block, specifications, and floor plans. The mentor should guide in creating professional drawings and provide feedback on design and layout. The project is part-time and expected to last 1 to 3 months.

I am designing my home kitchen in Kenya and am looking for an experienced designer or draftsperson to convert my existing 2D plans into a detailed 3D model and cabinet fabrication drawings.

I have 2D floor plans and elevations and need someone to:

* Create an accurate 3D model of the kitchen based on the provided plans
* Model all cabinetry, countertops, appliances, and fixtures to scale
* Help visualize the finished space and identify any design issues before construction
* Produce detailed cabinet drawings with exact dimensions suitable for fabrication
* Provide door, drawer, and panel dimensions for the cabinet maker who will be building and cutting the cabinets

Deliverables

1. Complete 3D kitchen model
2. Multiple rendered views of the kitchen from different angles
3. Cabinet shop drawings including:
* Overall cabinet dimensions
* Door and drawer front dimensions
* Panel sizes
* Cabinet elevations
* Appliance clearances and locations
4. Editable source files (SketchUp, Revit, AutoCAD, etc.)

Requirements

* Experience designing residential kitchens
* Experience creating cabinet fabrication/shop drawings
* Strong attention to detail and dimensional accuracy
* Ability to communicate design recommendations if potential issues are identified

To Apply

Please include:

* Examples of previous kitchen projects
* Software you use
* Estimated timeline
* Fixed-price quote

I’m looking for someone who can create a model that is both visually realistic and accurate enough for cabinet fabrication and installation.

We are a bespoke architectural metal fabrication company seeking experienced freelance drafters and fabrication designers to support our projects on a contract, hourly basis.

We are building a trusted network of technical professionals who can support projects as needed and become an extension of our team as our workload grows. We are also implementing consistent drawing, fabrication, and specification package standards to improve efficiency and maintain a high level of quality across all projects.

Typical Products & Systems:
Custom registers and vent covers
Decorative laser-cut panels and screens
Exterior panel and sunshade systems
Gate and fencing components
Stair railing panels
Cabinet and door inserts
Bracket, knife plate, and custom metal assemblies
Welded and formed sheet metal products

Responsibilities:
Create shop drawing packages, including cover sheets, general notes, specification sheets, keyed plans, hardware schedules, assembly details, and other documentation necessary to clearly communicate design intent, scope, and installation requirements to the client

Create fabrication packages, including fabrication drawings, BOMs, DXF files for laser cutting, STEP files for assemblies and formed components, and related manufacturing documentation

Translate sketches, PDFs, architectural drawings, and markups into shop drawings and fabrication-ready documentation

Develop hardware, mounting, assembly, and installation details as required

Work within established drawing, fabrication, and specification package standards to maintain consistency and quality across projects

Requirements
2+ years of metal fabrication drafting or design experience
Proficiency in SolidWorks and AutoCAD preferred (Fusion 360 or Autodesk Inventor also considered)
Must maintain your own software licenses
Experience creating fabrication-ready DXF and STEP files
Strong understanding of laser cutting, sheet metal fabrication, welded assemblies, and tube steel construction
Ability to read fabrication drawings and construction documents
Strong attention to detail, organization, and communication skills
Ability to work independently in a remote environment

Preferred Experience:
Architectural metal fabrication

Commercial and/or residential construction projects
Reading architectural and structural drawings
Commercial submittal packages and specification documentation

Availability & Communication:
Our projects range from small drawing revisions to complete shop drawing and fabrication packages. We value responsiveness, clear communication, and the ability to meet agreed-upon deadlines. Typical project timelines may range from one to two days to several weeks depending on scope.

We are looking for professionals interested in building a long-term working relationship. As project volume grows, there may be opportunities for increased workload and ongoing collaboration.

To Apply please provide:

Relevant shop drawing and fabrication drawing samples
Examples of fabrication packages, DXF files, or manufacturing documentation (if available)
Software proficiency
Hourly rate
Availability and typical turnaround times

• Describe a recent metal fabrication project you worked on, including the product type, software used, your role, and deliverables provided.
• What experience do you have preparing fabrication-ready files for laser cutting? Please describe your process for cleaning geometry, handling splines and curves, and preparing DXF files for manufacturing.
• Which software do you currently use and maintain licenses for?
• Have you created complete shop drawing or submittal packages for architectural or construction projects? If so, please describe the types of documents included and your level of involvement.
• A laser-cut panel requires a welded perimeter frame, concealed mounting hardware, and field installation by a contractor. What information would you expect to include in the shop drawing and fabrication package?

We are a real estate mapping business transitioning our operations from an offline AutoCAD model to a fully online platform. We have a custom-built web application hosted on Hostinger that is currently about 80% complete. The initial build was assisted by AI and a junior developer.

Before we launch, we need a Senior Full-Stack Developer to audit the existing codebase, secure the database, and execute the final 20% of the business logic. Because of the sensitive nature of our customer data (property coordinates, land deeds, and personal info), security and structural integrity are our highest priorities.

CRITICAL REQUIREMENT: ON-SITE WORK IN RAJASTHAN, INDIA
This is NOT a remote position. The selected developer must travel to our office in Rajasthan to work directly with our team and our current developer to complete this project.

We will fully manage and pay for your travel, accommodation, and food for the entire duration of your stay.

Once the final phase is successfully completed and deployed, you are free to leave.

Project Structure:
We will hire and execute this project in three distinct phases:

Phase 1: Discovery & Security Audit (Fixed Price)
You will be given delegated access to our Hostinger environment. You will review the codebase and database architecture. Your deliverable is a written, plain-English report detailing current security vulnerabilities (e.g., SQL injection risks, exposed environment variables, incorrect file permissions) and structural flaws. No new code is written in this phase.

Phase 2: Roadmap & Estimation
Based on your Phase 1 report, you will provide a task list detailing what needs to be refactored, secured, and built to cross the finish line, along with time/cost estimates for each task.

Phase 3: Execution & Polish (Milestone-based)
Working on-site at our office, you will implement the security fixes, build out the remaining 20% of the platform’s business logic, and polish the UI/UX for the final launch.

Required Expertise:

Deep experience managing custom applications and server environments on Hostinger (hPanel).

Advanced Database Security (IAM, parameterized queries, injection prevention).

Backend architecture and secure API integrations.

Strong ability to read, refactor, and clean up legacy or AI-generated code without needlessly rebuilding from scratch.

Excellent communication skills—you must be able to explain technical concepts to non-technical project managers.

To Apply, Please Answer These Questions in Your Proposal:

How do you approach taking over a codebase that was partially written by AI and a junior developer?

What are the first three security checks you run when logging into a new Hostinger/MySQL environment?

Are you willing and able to travel to Rajasthan, India, for the duration of this project (with all expenses paid by us)?

Looking For a Technical Documentation, Product Design & 3D Building Systems Specialist (Construction Products)

Remote | Long-Term | Hourly Contract

About Us

Aqua Boards Group is an international building materials company specializing in innovative construction board systems supplied across Australia, Europe, the United Kingdom, Ireland, the United States, and the Middle East.

Our product portfolio includes:

• Magnesium Oxide (MgO) Boards
• Cement Boards
• Calcium Silicate Boards
• Fire Protection Boards
• Flooring Systems
• Wall Systems
• Ceiling Systems
• Render Carrier Boards
• Underlayment Systems
• Temporary Protection Boards

Our business is heavily focused on technical performance, testing, certifications, fire-rated systems, and regulatory compliance. We work with international testing laboratories, certification bodies, architects, engineers, distributors, and construction professionals.

We are seeking a long-term Technical Documentation & Product Design Specialist to help transform technical information into professional, market-ready documentation and visual assets.

⸻

Who We Are Looking For

We ARE looking for someone who can understand technical products and professionally communicate them through high-quality documentation, layouts, diagrams, and 3D system visuals.

You should be comfortable working with engineering, construction, architectural, and industrial product information.

⸻

Role Overview

You will work directly with the Managing Director.

We will provide:

• Product specifications
• Test reports
• Certification information
• Technical notes
• Product photographs
• Engineering details
• Performance data

Your responsibility will be converting this information into professional technical documents, presentations, diagrams, and 3D visualizations suitable for customers, distributors, architects, consultants, engineers, contractors, and certification bodies.

⸻

Key Responsibilities

Product Datasheets

Create professional technical datasheets including:

• Product descriptions
• Applications
• Physical properties
• Mechanical properties
• Fire performance
• Thermal performance
• Acoustic performance
• Dimensions and tolerances
• Installation recommendations
• Technical specifications

⸻

Technical Brochures

Design professional brochures and marketing literature that communicate technical performance and applications while maintaining accuracy.

⸻

Installation Guides & Manuals

Prepare professional installation documentation including:

• Flooring systems
• Wall systems
• Ceiling systems
• Fire-rated assemblies
• Render carrier systems
• Wet-area systems
• Underlayment systems

Documents should be easy to understand while remaining technically accurate.

⸻

Technical Presentations

Prepare PowerPoint and PDF presentations for:

• Distributor training
• Product launches
• Technical seminars
• Customer meetings
• Internal training

⸻

Technical Drawings & Diagrams

Develop:

• Product application diagrams
• Installation details
• Fixing layouts
• Joint treatment details
• Section views
• System build-ups
• Product comparison graphics

⸻

3D Building System Design & Visualization

A major part of this role will involve creating professional 3D visuals and system concepts.

Examples include:

Wall Systems

• Steel frame wall systems
• Timber frame wall systems
• Fire-rated walls
• Acoustic wall systems

Flooring Systems

• Underlayment systems
• Raised floor systems
• Structural floor systems
• Floating floor systems

Ceiling Systems

• Fire-rated ceilings
• Suspended ceilings
• Service ceilings

Fire Protection Systems

• Steel beam protection
• Steel column protection
• Shaft walls
• Fire barriers

Deliverables

• 3D exploded views
• Installation sequence graphics
• Layer-by-layer build-ups
• Product cutaways
• System cross-sections
• Construction details
• Website-ready renders
• Brochure-ready graphics

Experience with any of the following is beneficial:

• SketchUp
• AutoCAD
• Revit
• SolidWorks
• Blender
• 3ds Max
• Similar software

⸻

Website Content Support

Prepare technical content for:

• Product pages
• Download centers
• Technical libraries
• Product comparison pages
• FAQ sections

⸻

Certification Documentation Support

Assist in organizing and presenting information relating to:

• ETA
• CE Marking
• UKCA
• CodeMark
• ICC-ES
• Fire Test Reports
• Product Assessments
• EPD Documentation

You are not responsible for obtaining certifications but should be able to professionally present the information.

⸻

Required Skills

Essential

• Excellent English writing skills
• Strong attention to detail
• Adobe InDesign
• Adobe Illustrator
• Adobe Photoshop
• Microsoft PowerPoint
• Microsoft Word
• Professional layout and design ability
• Ability to organize technical information

⸻

Preferred

Experience in:

• Building Materials
• Construction Products
• Engineering Products
• Architectural Products
• Fire Protection Products
• Insulation Products
• Industrial Manufacturing

Candidates with relevant industry experience will be strongly preferred.

⸻

Ideal Candidate

The ideal candidate can take a 100-page technical report and transform it into:

• A professional datasheet
• A technical brochure
• A distributor presentation
• A website-ready summary
• A 3D visual representation of the system

You should enjoy simplifying complex technical information while maintaining technical accuracy.

⸻

Working Arrangement

Contract Type

Hourly

Duration

Long-term ongoing relationship preferred.

Workload

Flexible.

Initially project-based with the opportunity for ongoing monthly work.

⸻

What Success Looks Like

Our goal is to build a complete professional technical documentation library for our brands, including:

• AQUAMAG
• AQUACORE
• CALMAT
• ARMOWA

The successful candidate will become a long-term extension of our team and help develop professional documentation and visual assets across all product categories.

⸻

Application Requirements

Please provide:

1. Brief introduction about yourself
2. Relevant experience
3. Portfolio examples
4. Examples of technical datasheets, installation guides, brochures, catalogues, presentations, or engineering documentation you have personally created
5. Examples of any 3D system visuals or construction-related renderings
6. Software proficiency
7. Hourly rate
8. Weekly availability
9. Country and time zone

⸻

Screening Questions

1. Have you worked with construction products, engineering products, industrial products, or building materials before?
2. Please share your best technical documentation project.
3. Please share examples of 3D construction system visualizations you have created.
4. Which software do you use for technical documentation and 3D modeling?
5. How would you convert a large technical report into a professional datasheet and brochure?
6. Are you available for long-term collaboration if we are a good fit?

We are looking for quality, professionalism, attention to detail, and a long-term working relationship.

I am looking for an experienced freelance AutoCAD technician/draughtsperson to convert two AI-generated schematic diagrams into professional-quality AutoCAD drawings suitable for use in educational materials for a Level 4 Building Services Engineering programme.

The drawings do not need to be fully detailed design drawings. They should remain schematic in nature but be redrawn to a professional engineering standard using appropriate CAD conventions, linework, symbols, annotation, layering, and presentation.

The two schematics represent the same building and should therefore be coordinated and use a common architectural background.

Building Description

Please use the following building name on both drawings:

Riverside Business Centre

The building comprises:

Ground floor office reception and core facilities
Ground floor retail unit (café)
First floor offices
Second floor offices
Simple rectangular building form
Consistent floor layouts where practical

The architectural outline should be identical on both schematics.

Drawing 1
Domestic Hot and Cold Water Services Schematic

Based on the supplied AI-generated sketch.

The drawing should include:

Incoming Water Services
Incoming cold water main
Stop valve
Water meter
Strainer
Pressure reducing valve (PRV)
Double check valve / backflow protection
Drain points
Isolation valves
Distribution
Main cold water riser
Branches to:
Ground floor retail unit
Ground floor office facilities
First floor offices
Second floor offices
Outlets

Office floors:

WC cisterns
Wash hand basins
Tea points
Cleaner's sinks

Retail unit:

WC
Wash hand basin
Sink / tea point
Water Heating
Local electric water heaters at tea points
Hot water distribution shown schematically
Additional Requirements

Please add indicative pipe sizes where appropriate, for example:

Incoming main: 50mm
Main riser: 40mm
Floor branches: 25mm
Final connections: 15–22mm

Exact sizing is not critical but should appear realistic and educationally appropriate.

Drawing 2
Above Ground Drainage and Rainwater Schematic

Based on the supplied AI-generated sketch.

The drawing should include:

Foul Drainage

Office floors:

WC
Wash hand basin
Tea point sink

Retail unit:

Customer WC
Hand basin
Kitchen sink
Dishwasher
Drainage Components
Soil stack
Soil vent pipe (SVP)
Horizontal branch connections
Below-ground foul drain
Inspection chamber
Rodding access points
Gullies where appropriate
Trade Waste

Retail kitchen drainage routed through:

Grease trap/interceptor

before connecting to the foul drainage system.

Rainwater System
Roof gutters
Rainwater downpipes (RWP)
Surface water drainage
Connection to public surface water sewer
Additional Requirements

Please add indicative pipe sizes such as:

WC branches: 100mm
Soil stack: 100mm
SVP: 100mm
Foul drains: 100–150mm
Rainwater downpipes: 100mm
Surface water drains: 100–150mm

Again, sizing is indicative only and intended for educational purposes.

Deliverables

Please provide:

Native CAD Files
AutoCAD DWG
AutoCAD DXF
PDF Outputs
A3 landscape PDF
Suitable for teaching materials and student exercises
CAD Standards
Layers used appropriately
Consistent lineweights
Clear annotation
Professional title block
Drawing title
Drawing number
Revision box
Scale noted as "NTS" (Not to Scale)
Intended Use

These drawings will be used as educational examples within a Building Services Engineering course. They should therefore be:

Technically credible
Visually clear
Easy for students to interpret
More professional than the supplied AI-generated sketches
Suitable for use in quizzes, discussions, and teaching activities
Information for Applicants

Please provide:

Example building services schematics you have previously produced
Confirmation that you can supply editable DWG files
Estimated cost
Estimated turnaround time
Any questions or suggested improvements to the brief

The supplied images should be treated as concept sketches only; professional judgement is expected when producing the final CAD drawings.

Complete a 2D landscape design and after approval, produce a 3D of the the design.

We are seeking a skilled civil engineering designer / drafter with experience in residential projects in California. The ideal candidate will have a strong understanding of California regulations and standards, and be proficient in planning (slope analysis, cut and fill calculations. BMPs, drainage, site plans, retaining walls, etc), creating and modifying technical drawings. Responsibilities include drafting plans, collaborating with structural engineers, architects, and ensuring compliance with local building codes. Familiarity with Autodesk AutoCAD and Revit is essential.

I need an AutoCAD drafter to URGENTLY (a) trace and (b) prepare the following drawings:

1 Flooring Plan
1 Ceiling Plan
3–4 Elevations
A few construction/detail drawings

I will provide:
Reference images/PDFs
Sample format/template showing exactly how the drawings should be organized and presented

Requirements:
AutoCAD proficiency
Ability to accurately trace and organize drawings
Good attention to detail and linework
Fast communication
Ability to start immediately

This is an urgent task, so please only apply if you can begin right away and deliver quickly.

When applying, please include:
Estimated completion time
Similar drafting/tracing work you've done before
Your AutoCAD experience

Looking forward to working with someone reliable and responsive.

Budget: $25–30 Fixed Price (negotiable based on experience and turnaround time)

ENERGERING Studio, a new design company focused on technical development and implementation of products, systems, and processes.
We provide engineering solutions and services, with a particular focus on renewable energy, energy efficiency and the development of innovative solutions for residential, commercial and industrial applications.
We are focused on the executive, design stage of the projects, taking care of all the details to ensure a smooth construction.

We are looking for a electrical designer for constant support to our technical team!

The candidate shall take care of mainly LV system design by the use of:
- iProject, Integra or similar for SLD and BoQ
- SPAC Automation, Autocad Electrical or similar for electrical wiring diagram and cabinets design
- Autocad for layout (candidates with capabilities on parametric 3D software and BIM/LOI will be prefered)

The scope of the work will be to develop plant diagrams, single line diagrams and multiwiring diagrams. Field of application will be:
- electrical plants for residential and commercial utilities
- industrial plants
- renewable energy plants
- electrical traction system

Some of the required activities will be:
- electrical and automation cabinets design
- interconnection diagrams among systems
- sizing of electrical components (circuit breakers, transformers, conductors, capacitors)
- thermal sizing for electrical cabinet
- sizing of power lines
- optimization of interconnections for energy saving
- PV plant layout and design

Design method will follow IEC and CEI standards

The candidate shall consider the presence of software in Italian language, however based on international standards.

Join us, support the world!

• Describe your recent experience with similar projects

# Freelance Fire Alarm Designer

## Position Overview

Olin3D is seeking an experienced Freelance Fire Alarm Designer to assist with the preparation of fire alarm shop drawings, permit submittals, calculations, and design documentation for commercial and institutional projects. This is a remote, project-based position with flexible hours and the opportunity for ongoing work.

## Responsibilities

* Prepare fire alarm design drawings using AutoCAD.
* Develop complete fire alarm permit submittal packages.
* Create device layouts, riser diagrams, battery calculations, voltage drop calculations, and sequence of operations.
* Update and revise existing fire alarm drawings based on customer markups and AHJ review comments.
* Coordinate fire alarm system designs with architectural, mechanical, and electrical drawings.
* Prepare response letters addressing plan review comments.
* Verify compliance with NFPA 72, IBC, IFC, and local AHJ requirements.
* Assist with smoke control, elevator recall, duct detector, sprinkler monitoring, and suppression system interfaces as required.
* Maintain company drafting standards and templates.

## Required Qualifications

* Minimum 3 years of fire alarm design experience.
* Proficiency in AutoCAD.
* Working knowledge of NFPA 72 and fire alarm system design principles.
* Experience preparing permit-ready fire alarm shop drawings.
* Ability to read and interpret architectural, mechanical, and electrical plans.
* Strong attention to detail and ability to work independently.
* Excellent written and verbal communication skills.

## Preferred Qualifications

* NICET certification (Level I, II, III, or IV).
* Experience with FireCAD.
* Experience with Fire-Lite, Edwards, Siemens, Notifier, or Simplex systems.
* Familiarity with smoke control systems, elevator interfaces, and emergency voice/alarm communication systems.
* Experience working with multiple AHJs throughout the United States.

## Deliverables

Typical assignments may include:

* Fire alarm floor plans
* Riser diagrams
* Battery calculations
* Voltage drop calculations
* Device schedules
* Sequence of operations
* Plan review response letters
* G-MAP updates and revisions

## Compensation

Compensation will be based on experience and may be structured as:

* Hourly rate
* Fixed-price projects
* Per-sheet or per-submittal pricing

## Application Requirements

Please provide:

* Resume
* Sample fire alarm design drawings
* Relevant certifications
* Software proficiency list
* Desired hourly rate or project pricing

This is a remote freelance position with the potential for long-term collaboration on commercial, educational, healthcare, and industrial fire alarm projects.

We are seeking a skilled freelancer to create a CAD rendering for a home remodel project. The ideal candidate will have experience in architectural rendering and be proficient in Autodesk AutoCAD. The project involves creating detailed 3D models to visualize the remodel design. Attention to detail and the ability to follow project specifications are essential. If you have a portfolio showcasing similar work, we would love to see it.

ASAP Project:
Overall scope: convert existing landscape plan set (existing and proposed) into a 3D model using Rhino / Rhinoceros 3D software (preferred) or AutoCAD. Create professional PDF plan set ready for submission to jurisdiction. Draw new schematics for drilled, cast-in-place, straight-shaft pier and grade-beam foundation.

For consideration, include at least 3 samples of your work (can be watermarked) for review.

Detailed instructions:
Working from the attached PDF.
1. Create a cover page with the exact information contained in the existing cover page (PDF page 1). No more than three (3) typographical errors are acceptable.
2. Include existing Construction Best Management Practice page, Project Waste Management Report, Arborist's Report, Topographic survey plan, consulting engineering. (PDF pages 2, 3, 5, 10-26)
3. Recreate and re-model the following in black and white. All drawings must be re-created from scratch so that they are error-free and can be further edited:
3a. Existing Site, Fence & Retaining Wall Plan. (PDF page 4)
3b. Proposed Site, Fence & Retaining Wall Plan. (PDF page 4)
3c. Riprap Drainage Daylighting Detail. (PDF page 6)
3d. Retaining Wall Drainage plan (PDF page 6)
3e. Bubble-up Energy Dissipator. (PDF page 7)
3f. Proposed Erosion Control Plan (PDF page 7)
3g. Existing Fence & Retaining Wall Elevation (PDF page 8)
3h. Proposed Fence & Retaining Elevation View (PDF page 8)
3i. Proposed Fence and retaining Wall Sections (PDF page 8)
3j. Proposed Retaining Wall Footing Longitudinal Section (PDF page 8)
3k. Proposed Fence and Retaining Wall Foundation Plan (PDF page 9)
(Proposed Retaining Wall Detail can be omitted)
4. Draft new plan, section and elevation for retaining wall showing drilled, cast-in-place, straight-shaft pier and grade-beam foundation. (Exact dimensions will be provided by structural engineer.)

Deadline: Tues, June 17 for first draft. Thursday, June 17 for final draft.

Payment: Half of payment at delivery of first draft and final payment once project completed.

• Can you begin work on this immediately?
• How long have you been an architectural drafter? How many projects have you led? How many projects have you assisted?
• Are you interested in more projects similar to this one?

We're seeking experienced Virtual Assistants to support our Manager in AutoCAD Designer and communicating with existing and potential business accounts in the construction materials supply market. Specifically, we manufacture heated flooring and heated driveway systems.

This role is ideal for someone confident and comfortable acting as a personal assistant to senior leadership and have 2D AutoCAD Design experience .

What You'll Do

1. AutoCAD drawing and customers communicating

2. Essential Duties and Responsibilities:

a. Calculating area and estimating square footage required.

b. Designing layouts for the floor plans provided on autocad.

c. Communicate with a variety of business professionals via phone and email

d. Assist the Manager with daily duties and responsibilities

e. Engage with business owners and decision-makers (both existing and prospective accounts)

f. Book qualified meetings directly on the Manager's calendar

g.Document all communications in a simple, shared tracking system


3. Required Knowledge, Skills, and Abilities:

a. Basic Computer Knowledge

b. Spread sheet evaluation

c. Auto CAD

d. Microsoft Office

e. Strong spoken English with confident, natural phone presence and/or professional email communication skills
Previous experience as a Virtual Assistant, particularly in appointment setting
Comfortable learning and discussing construction-related products
Reliable, responsive, and detail-oriented




Compensation

Compensation will be discussed during the interview process.

Requirements
high-level assistance that drives business growth
See above


To Apply

Contact us for interview

I am looking for an experienced architect to design a modern two-story house similar to the attached reference image.

Lot Size:

* Width: 7.5 meters
* Length: 30 meters

Ground Floor Requirements:

* Large living room: approximately 6m x 7m
* Master bedroom: approximately 4m x 4m with private bathroom and closet space
* Secondary bedroom: approximately 3m x 3.5m
* Rear access door from the secondary bedroom
* Staircase to the second floor
* Modern entrance and circulation layout
* No kitchen on the ground floor

Second Floor Requirements:

* Two bedrooms
* Family living room / TV room approximately 4m x 5m
* Shared bathroom
* Front balcony similar to the reference image
* Good natural lighting and ventilation

Design Style:

* Modern minimalist architecture
* Similar to the attached white contemporary house
* Clean facade, large windows, elegant balcony, and modern exterior appearance

Deliverables Required:

1. Floor plans (Ground Floor and First Floor)
2. Front, rear, and side elevations
3. Roof plan
4. 3D exterior renderings
5. Basic interior layout suggestions
6. Source files (AutoCAD, Revit, SketchUp, or similar) and PDF files

I need someone to take a photograph and a hand drawing and clean it up with AutoCAD. The project is for a 9'6"w x 10'h garage door. The ideal candidate will have experience in architectural design and be proficient in using AutoCAD to ensure accurate and detailed drawings.

I’m looking for a semi-experienced draftsmen to work on 2D sketches for a custom carpenters business. We’re look for 2 day turnarounds for sketches such as panels, cabinets, doors, and residential renovations. Work part-time and consistent.