Reverse Engineering Projects for Freelancers

I have a completed mobile game and want to breathe new life into it through visual upgrades. The core gameplay stays the same; what I need is a developer who can dive into the existing project files, locate the pre-made functions that handle visual assets, and modify them so we can introduce sharper character models, fresh skins, and smoother animations.

The project involves:
• Reworking or extending the current code that drives character rendering, particle effects, and animation controllers.
• Importing updated 2D/3D assets (I’ll supply source files) and wiring them into the build without breaking live gameplay.
• Optimising any new textures or animation sheets for solid frame rates on both Android and iOS.

Everything is already organised in Git, and the game is built with Unity, so you’ll need proven Unity experience plus comfort with C# scripting, Animator Controller tweaks, and asset-bundle management. If you’ve modded commercial APKs before or handled reverse-engineering tasks such as editing DLLs or Smali, that’s a strong bonus.

Acceptance criteria
• Latest test build installs and runs on mid-tier devices with equal or better performance than the current live version.
• All new character skins appear in-game, selection menus update correctly, and animations trigger exactly as in the spec sheet.
• No crashes, null-ref errors, or shader glitches reported over a 20-minute continuous playtest.

Share a short note about similar visual modding work you’ve shipped, along with a link or build if possible, and let’s get started.

Skills: Mobile App Development, iPhone, Game Design, C# Programming, 3D Modelling, Unity 3D, Game Development, Unity

I’m looking for an experienced embedded firmware engineer to analyze a PCB based on the ABOV A31G316RLN (ARM Cortex-M0+).

The main goal is to restore access to the original Service Mode and analyze the firmware and memory protection.

Experience with firmware reverse engineering, SWD/JTAG, and ARM microcontrollers is required.

I have a Keil ULINK2 debugger and can provide PCB photos and hardware details.

Project budget: $200.

A micrometer design with top knob. I have some schematics that can most likely be changed (shrunk down) to suit. It will be the full micrometer design including files for laser marking and/or cnc machining the numbers and graduations. You will need to figure out the graduations.

Would look similar to the attached

The task is to reverse-engineer an existing Windows application written in Delphi, understand every formula it applies, and produce a brand-new build that replicates the behaviour one-to-one. I can run the original program on my side and will share the installer together with several trusted input / output pairs, so you can repeatedly verify that your rewrite produces exactly the same numbers, generates the same files, and keeps the original screen layout intact.

No source code is available, so you will need to disassemble, debug, or instrument the binary to uncover the full calculation flow. Once the logic is mapped, the goal is to deliver a clean, maintainable codebase in the language of your choice (Delphi, C#, or C++ are all acceptable), plus a compiled executable that mirrors the current program’s results and user interface.

To consider the project complete I will check:
• identical calculation results for all supplied and additional test cases
• identical input and output file formats, byte for byte
• a UI that matches the original layout so users feel no learning curve

Please outline your preferred toolchain (IDA, Ghidra, x64dbg, etc.), previous experience with Delphi binaries, and an estimated timeline from initial analysis to final build.

Skills: C Programming, Delphi, C# Programming, C++ Programming, Debugging, x86/x64 Assembler, Software Development, Reverse Engineering

Hi,
I am looking for a highly skilled and independent Android Reverse Engineer for a long-term, exclusive contract. I currently have 20 to 25 ongoing projects with many more in the pipeline, so I need a dedicated developer who will work exclusively on my tasks and be readily available.
​Important: I am strictly looking for an individual developer who can handle end-to-end tasks alone. Agencies, teams, or outsourced groups please do not apply.
​Core Responsibilities:
​Deep App Analysis & API Extraction: Capturing private APIs, intercepting traffic, and documenting endpoints.
​Security Navigation: Handling SSL pinning for analysis purposes and replicating complex app authentication flows into custom APIs.
​Encryption Translation: Decompiling and translating encryption/decryption logic from Android (Java) to Python.
​Virtualization & Cloning: Creating custom sandboxed environments or app virtualization scripts to run and test multiple independent instances of specific applications.
​Requirements:
​Extensive experience in Android Reverse Engineering, SSL bypassing, and API integration.
​Strong programming skills in Python scripting and Java (Android Studio).
​Ability to work completely independently.
​Must be looking for a stable, long-term working relationship.
​Hiring Process & Package:
I am offering a very attractive and premium package for the right candidate. However, before finalizing the long-term contract, you must complete 1 or 2 small test tasks to demonstrate your capabilities, speed, and expertise.
​If you are a solo expert who fits this description, please send your proposal outlining your past experience with API extraction and Python scripting.

# STL to STEP Conversion + CNC Manufacturing Drawings

Looking for an experienced CAD designer to convert an existing STL file into a clean, editable STEP model and create professional manufacturing drawings suitable for CNC machining quotes.

**Deliverables:**
- Clean, accurate STEP file compatible with SolidWorks and Fusion 360
- Native editable CAD file (SolidWorks or Fusion 360 preferred)
- Fully dimensioned 2D manufacturing drawings (PDF + DXF/DWG)
- Appropriate tolerances and manufacturing notes

**Requirements:**
- Experience reverse-engineering STL files into true solid CAD geometry
- Understanding of CNC machining and manufacturing drawings
- Must reconstruct smooth, accurate geometry — **not simply export a faceted STL mesh as STEP**

Please provide examples of similar work, your estimated price, and turnaround time.

**Goal:** A professional CAD model and drawing package that a machine shop can use to quote and manufacture the part.

link to file:
https://drive.google.com/file/d/1Axi8DbFDQJKcjtE7VYzMO7nEEg1wN_7y/view?usp=drive_link

We are looking for an experienced Windows Kernel Developer to upgrade and optimize an existing low-level system utility. The project involves modifying an existing Windows Kernel Driver to ensure full compatibility with modern Windows security features and optimizing a C++/ImGui-based overlay interface.
Key Responsibilities:

• HVCI Compatibility: Upgrade the current memory-reading driver architecture to work seamlessly with Hypervisor-Protected Code Integrity (HVCI) enabled. The current implementation relies on generic BYOVD (Bring Your Own Vulnerable Driver) techniques which fail under HVCI; we need a robust, modern solution (e.g., proper driver signing, implementation of secure communication channels, or custom kernel architecture).

• Low-Level Memory Management: Optimize kernel-to-user-mode communication for high-frequency, safe memory reading operations without degrading system performance.

• UI/UX Overhaul (ImGui): Redesign and optimize the existing ImGui overlay menu. This includes improving rendering performance, structuring the codebase for custom feature toggles, and ensuring smooth overlay presentation.

• Security & Anti-Analysis: Implement techniques to ensure the system utility operates discreetly at the ring-0 level, respecting modern operating system guardrails and security layers.
Required Skills:

• Expert knowledge of C++ and the Windows Driver Development Kit (WDK).

• Deep understanding of Windows Kernel Internals (paging, memory mapping, CR3, MDL).

• Proven experience with Virtualization-Based Security (VBS) and HVCI (Hypervisor-Protected Code Integrity) compliance and remediation.

• Experience with ImGui and DirectX/Vulkan overlay rendering.

• Strong reverse engineering and debugging skills (Windbg, IDA Pro).

Project Type: One-time project with potential for long-term collaboration/maintenance.

Busco un ingeniero especializado en SolidWorks y diseño de estructuras metálicas para desarrollar una solución desmontable, optimizada para su fabricación en China. El proyecto contempla la creación del modelo 3D, planos técnicos detallados, despiece, especificaciones de materiales, tolerancias y cálculos estructurales.

Se valorará especialmente la experiencia en diseño para manufactura, optimización de componentes, preparación de documentación técnica y coordinación con proveedores internacionales. El profesional seleccionado deberá entregar documentación clara, precisa y lista para producción.

Antes de compartir información técnica detallada, será necesario firmar un acuerdo de confidencialidad y cesión de propiedad intelectual.

We’re seeking a senior software engineer to help build and improve an AI-driven fintech product. You’ll work on core product development, enhance existing features, and support the team in delivering reliable, scalable solutions. This role is ideal for someone who can contribute to both technical execution and product growth, with a strong background in software development and a passion for fintech innovation.

Project Description

I need an experienced iOS forensics and reverse-engineering specialist to recover data from an iPhone 14 Pro encrypted computer backup created on 18 June 2026.

The original backup metadata was overwritten by a subsequent backup created on 25 June 2026. Approximately 170,849 original hash-named payload files (around 68.2 GB) remain, but the original per-file encryption-key records are not available in the surviving metadata. The original backup password is available.

Multiple investigators have already conducted extensive forensic examinations. Their reports and available technical artefacts will be provided for review.

Objective

Develop and implement a technically viable approach to decrypt the surviving original payload files and recover the data from the 18 June 2026 backup.

Required Work

Review the existing forensic reports and artefacts before proposing a solution.

Identify a specific technical approach that advances beyond the investigations already completed.

Determine whether the surviving payload files can be decrypted or their original file-key mapping reconstructed using available evidence and a demonstrably different approach.

Where feasible, demonstrate successful decryption and validation of at least one original payload file.

If the initial proof succeeds, propose the next stage for recovering additional files or reconstructing a usable backup.

Important Scope Restrictions

Previous investigations have already covered backup metadata, SQLite databases, SSD free space, deleted-file remnants, pagefile, swapfile, shadow copies, and searches for original key material.

Repeating these searches or performing another generic data-recovery scan is not required. Any proposed examination of previously investigated areas must have a specific, evidence-based technical rationale that goes beyond the completed work.

A report summarizing existing findings, generic recovery-tool operation, or recovery of unrelated files will not satisfy the project objective.

Required Experience

Applicants must have relevant hands-on expertise in iOS encrypted backups, Apple backup encryption and key structures, SQLite forensic recovery, or reverse engineering of Apple backup formats.

Proposal Requirements

Please include:

Relevant experience with similar technical recovery cases.

The specific approach you propose beyond the work documented in the existing reports.

The concrete deliverable for the initial milestone.

The project will begin with a limited technical assessment based on the supplied reports and artefacts. Further implementation will be considered based on the proposed method and initial findings.

The primary objective is actual decryption and data recovery—not another round of general searching.

Skills: iPhone, Objective C, Cryptography, iOS Development, Data Extraction, Digital Forensics, Reverse Engineering, Data Recovery, iOS

Hi Cristian,

I need help reverse engineering the complete appointment booking flow of a government website (pedidodevistos.mne.gov.pt) that is protected by DataDome + reCAPTCHA Enterprise.

I already have several HAR files captured from successful manual sessions (login → questionnaire → form → calendar → slots). I need someone who can:

1. Analyze the exact request sequence, cookies, headers, and fingerprint beacons (especially the getTables / DataDome signals).
2. Identify what the anti-bot system is actually checking at each step.
3. Help rebuild a reliable automated flow (hybrid approach: real browser only where necessary + HTTP for the rest).

Key technical points:
- DataDome is present (bd.js + cookies)
- reCAPTCHA Enterprise is used (site key: 6LdOB9crAAAAADT4RFruc5sPmzLKIgvJVfL830d4)
- The site rejects pure HTTP logins — the session must start inside a real browser
- We already tried anti-detect browsers (Donut) but the proxy injection and fingerprint consistency are still problematic

I can share the HAR files and current Python code (Playwright + curl_cffi) after we start.

Are you experienced with DataDome and reCAPTCHA Enterprise widget flows?
What is your availability and estimated time for an initial analysis?

Thanks

ye requirement hai basically

Node.js/Puppeteer developer to build a high-speed, headless web automation system.

Requirements:

Strong experience with API Reverse Engineering and replicating complex HTTP POST requests.

Experience handling session cookies, CSRF tokens, and HTTP headers (Referer, User-Agent spoofing).

Experience with Puppeteer/Playwright as a fallback when direct API requests are blocked.

Knowledge of time synchronization (NTP) for millisecond-precision execution.

Experience integrating CAPTCHA solving APIs (like 2Captcha or AI-based OCR).

Ability to build a robust backend with proxies and multi-threading to handle concurrent requests.

KiCad PCB design: low-power IoT field node (ESP32-S3, LoRa, GNSS, 2x RS485), Rev0

We need a 4-layer PCB for a low-power outdoor IoT field node, designed in KiCad 10 and derived from the gateway design you already know. The node runs on 12 V and sleeps most of the time. It has an ESP32-S3 module, a 915 MHz SX1262 LoRa radio, a standalone GNSS module, a low-power RTC with a backup cell, an external watchdog, USB-C, and two independent RS485 sensor ports with switched power.

The attached brief is confidential and defines the work in three parts: Part 1, closed requirements; Part 2, electrical sizing that you calculate and justify; Part 3, acceptance tests. Please read it before starting.

Fixed price: $450, in four milestones

Milestone 1: Schematic A, power and sensor ports ($70). KiCad schematic sheets (.kicad_sch) for the J1 input protection (fuse, reverse polarity, TVS), UVLO, 3.3 V buck, USB-C power path, VSW1/VSW2 switched outputs and both RS485 ports. Includes a clean ERC report and written calculation notes for each related item in Part 2 of the brief.

Milestone 2: Schematic B, remaining blocks and close-out ($65). ESP32-S3, SX1262 RF block, GNSS, RTC, TPL5010 watchdog, USB-C, BOOT/RESET and test points. Includes the full sleep-current budget per component, a BOM with part numbers and a direct alternate per line, and a clean global ERC report.

Milestone 3: Layout and manufacturing files ($180). KiCad PCB (.kicad_pcb) with a clean DRC report, 4-layer ENIG stackup, 50 Ω RF routing, test points, measurement jumpers and silkscreen. Includes Gerbers, BOM and pick-and-place files, and one consolidated correction round.

Milestone 4: Release for fabrication ($135). One consolidated revision incorporating FurrowTech’s layout review. The final files must pass the fabricator’s DFM review. Includes the final BOM and manufacturing package.

Acceptance. Each milestone is accepted based on the KiCad source files and the ERC/DRC reports, not on status messages.

Tools and file format. All design work must be done in KiCad 10 (the version used for FurrowTech’s Gateway project). Deliverables must include the native project files (.kicad_pro, .kicad_sch, .kicad_pcb) with all symbol, footprint and 3D model libraries included, so the project opens without missing libraries. PDF or image exports alone are not accepted as deliverables.

Design Warranty. For 90 days from the date FurrowTech receives the boards fabricated from the final files, the designer will correct, at no cost, any defect in the design (schematic, layout, BOM or manufacturing files) that prevents or impairs the intended use of the board or fails to meet a requirement of the brief. FurrowTech will notify the designer of the defect with evidence (measurements, photos or files), and the designer will deliver the corrected files within a maximum of 10 business days. This warranty does not cover manufacturing or assembly defects, scope changes requested by FurrowTech, or modifications made by third parties.

Confidentiality and ownership. The brief and every file we share are confidential and may only be used for this project. Ownership of the work product follows the Upwork terms, upon payment. Please tell us in writing, before you start, if you plan to reuse any of your own pre-existing design blocks.

Skills: PCB Design, KiCad, Schematic Design, Circuit Design, Embedded Systems, IoT.

I need a solid teardown of a single Google Play APK that changes behaviour depending on who is running it. When USB-debugging is enabled or the package is being probed in a reverse-engineering environment, its WebView quietly loads an offline HTML file shipped in the assets folder. To a normal user, however, the same WebView bounces straight to an external website.

Your main task is to pinpoint exactly where, in the decompiled code or resources, that redirect decision is made. I’m interested in the class names, methods or smali blocks that switch between the local file and the live URL, plus any supporting logic—native checks, signature checks, anti-debug flags—that feeds into it. The end goal is a clear explanation I can follow and reproduce, not just a high-level guess.

Deliverables
• A short, well-structured report (PDF or Markdown) that:
– Identifies the file(s) or method(s) controlling the redirect
– Maps out any anti-debugging or tamper-detection routines tied to that logic
– Includes annotated code snippets or smali excerpts and screenshots/logs proving the flow
• Optional but appreciated: suggestions for bypassing or reproducing the behaviour in a test build

Relevant expertise
☑ Android app reverse engineering & APK analysis
☑ Android WebView / website-redirect troubleshooting
☑ Mobile app security testing & anti-debugging checks

When you submit, please give a brief, tool-based game plan (e.g., JADX, apktool, Frida, Burp, mitmproxy, etc.), estimated hours or milestones, and how you’ll document findings.

Skills: Java, JavaScript, Mobile App Development, Android, Mobile App Testing, Reverse Engineering, Android App Development, Android SDK, Android Studio, Security Auditing

Be Fulfilled is seeking a senior full-stack engineer to fix bugs and move our Lovable-built platform into scalable production hosting. You will oversee deployment, CI/CD, testing, monitoring, and security, ensuring the platform is launch-ready by January 1, 2027. We need someone with experience taking a web app from prototype to production and who can start immediately. The role involves working with React, TypeScript, Supabase, Postgres, edge functions, and GitHub.

I am moving my desktop software's activation process to a web server and need a Python developer to replicate a simple file-conversion algorithm.

Background:
I have a small legacy Windows utility (Keygen.exe, 300 KB) built in Borland Delphi. I use it to convert customer "Request Files" (.txt) into "Activation Certificates" (.txt). I need this exact conversion logic written in a standalone Python script so I can run it on a Linux backend.

Your Task:

Analyze the legacy utility: Open the provided utility in tools like IDA Pro, Ghidra, or IDR to understand the exact algorithm (hashing, XOR, Base64, etc.) it uses to convert the input text to the output text. (Note: The utility is wrapped in a modified UPX packer, so you will need to use x32dbg and Scylla to dump it to memory first so you can analyze the Delphi code).

Write the Python Script: Create a clean, standalone Python script (e.g., generate_cert.py) that takes a Request File as input and outputs the exact same Certificate File.

Deploy-Ready: The final script must have no Windows dependencies and be ready to run on a Linux VPS.

What I Will Provide:

The original Keygen.exe utility.

A sample Request File (input).

The exact Certificate File generated from that Request File (output).

Acceptance Test:
I will provide 5 completely different Request Files. Your Python script must generate 5 Certificates that are 100% identical to the ones generated by the legacy utility.

Required Skills:

Python

IDA Pro / Ghidra / IDR (Interactive Delphi Reconstructor)

x32dbg / Scylla (Memory Dumping)

Binary Analysis / Debugging

To Apply, Please Answer:

Do you have experience manually dumping a modified UPX file from memory using x32dbg and Scylla?

What tools will you use to analyze the Delphi binary?

What is your estimated timeline and fixed price for this specific task?

I have a single STL part that now needs to live in my parametric workflow, so I’m looking for someone who can reproduce it as a solid STEP model. The brief is simple but precision-driven: the new CAD must be an exact geometric match to the current mesh, including every curve, fillet, and cavity. Please keep the topology watertight and organised into logical bodies so I can open it immediately in SolidWorks or Fusion without repair work.

Deliverable: one clean, fully solid STEP file that mirrors the STL one-to-one. If you’re comfortable with reverse-engineering from mesh data and have done tight-tolerance conversions before, you’ll find this a straightforward task. I’ll send the STL as soon as we start and will verify the finished file by overlaying it against the original mesh, so accuracy will be the key acceptance criterion.

Skills: CAD/CAM, Solidworks, Mechanical Engineering, 3D Modelling, 3D Design, 3D Printing, 3D CAD, CAD / SolidWorks

Need help filing a Petition to Revive for two abandoned trademark applications, 99022879 and 99022828, due to failure to file a timely Statement of Use or Extension Request. The work includes reviewing the current status of both applications, preparing the required petition, and submitting it correctly to the USPTO. Please have experience with trademark filings and understand the procedures for reviving abandoned applications.

# Mechanical Engineer Needed | CJ4 Throttle Quadrant Replica

## Project Overview

I'm looking for an experienced mechanical engineer or product designer to help develop a near 1:1 scale, fully functional replica of the **Cessna Citation CJ4 throttle quadrant** for use with Microsoft Flight Simulator.

This project is part of **525Charlie**, my ongoing effort to design and build a full-scale Citation CJ4 home cockpit. I'm developing the cockpit from the ground up, including custom instrument panels, electronics, PCBs, and mechanical assemblies.

The throttle quadrant is one of the more mechanically challenging components of the cockpit, and I'm looking for someone with the engineering experience to translate the real aircraft's design into a practical, manufacturable simulator control.

This is not simply a visual 3D modeling project. The finished design must be mechanically functional, accurately scaled, and engineered for fabrication and assembly.

## Reference Material

I have collected extensive reference material from the real Citation CJ4, including:

- Technical drawings and dimensional references
- Detailed photographs from multiple angles
- Videos demonstrating throttle operation and movement
- Reference measurements and component details
- Information about the surrounding cockpit and pedestal geometry

These materials will be provided to the selected engineer.

The challenge is to interpret these references, reverse engineer the mechanical arrangement, and develop a working replica that preserves the appearance, proportions, movement, and tactile characteristics of the real throttle quadrant as closely as practical.

## Project Scope

**1. Reverse Engineering and Mechanical Design**

Analyze the supplied drawings, photographs, measurements, and videos to develop an accurate 3D mechanical model of the CJ4 throttle quadrant.

The design should reproduce the external geometry, lever positions, spacing, travel, and visible mechanical details while accommodating the internal mechanisms required for simulator use.

**2. Functional Throttle Mechanisms**

Develop practical mechanical solutions for the throttle assembly, including:

- Dual throttle lever operation
- Realistic lever travel and resistance
- Adjustable friction or drag mechanisms
- Mechanical stops and appropriate detent behavior
- Reverse thrust operation and associated lever mechanisms
- Switches and other integrated controls where applicable
- Provisions for position sensing and electronic integration

The objective is to reproduce the feel and operation of the real aircraft rather than create a generic gaming throttle housed inside a CJ4-shaped enclosure.

**3. Design for Manufacturing**

The assembly must be designed with practical manufacturing methods in mind, including:

- CNC-machined components
- 3D-printed components
- Laser-cut or fabricated parts
- Standard bearings, bushings, springs, fasteners, and other readily available hardware

The design should balance mechanical accuracy, durability, ease of assembly, and reasonable manufacturing costs.

I'm not looking for an unnecessarily complicated mechanism when a simpler engineered solution can achieve the same result.

**4. Electronics Integration**

I will handle the electronics and simulator integration, but the mechanical design must accommodate position sensors, switches, wiring, and any required mounting provisions.

Experience designing mechanical assemblies around Hall-effect sensors, rotary encoders, or similar input devices would be beneficial.

**5. CAD Development and Documentation**

The final design should be a complete mechanical assembly, not just an external shell.

Expected deliverables include:

- Fully editable parametric CAD models, preferably Autodesk Fusion 360
- Complete assembly with individual components
- Mechanical drawings with critical dimensions and tolerances
- Exploded assembly views
- Bill of materials, including standard hardware
- Manufacturing-ready files for custom components
- Assembly guidance and documentation

## Development Approach

I prefer a collaborative, milestone-based development process.

The initial phase should focus on reviewing the reference material, establishing the mechanical architecture, and agreeing on how the throttle mechanisms will function before investing significant time in detailed CAD modeling.

From there, we'll progress through mechanical design, prototype fabrication, testing, and revisions.

I have access to 3D printing and manufacturing resources and can fabricate prototype components to evaluate fit and function.

The selected engineer should be comfortable reviewing feedback from physical prototypes and refining the design as needed.

## Ideal Candidate

I'm particularly interested in engineers with experience in:

- Mechanical reverse engineering
- Complex moving assemblies
- Product development and prototyping
- Mechanical linkages, detents, and friction mechanisms
- CNC and additive manufacturing
- Autodesk Fusion 360 or comparable parametric CAD software
- Flight simulation hardware, automotive controls, or similar mechanical control systems

Aviation experience is a plus, but strong mechanical design skills and an ability to interpret reference material are more important.

## What I'm Looking For

I need someone who can solve mechanical problems, not just reproduce shapes in CAD.

The right person will be comfortable looking at photographs and videos of an existing mechanism, determining how it likely operates, and proposing practical engineering solutions that can be manufactured and tested.

Attention to detail is important. The finished throttle quadrant should feel like a carefully engineered replica of the real CJ4 control, not an off-the-shelf gaming peripheral.

## When Applying

Please include:

1. Examples of mechanical assemblies or reverse-engineering projects you've completed.
2. Examples of moving mechanisms you've designed, preferably with videos or photographs of working prototypes.
3. Your preferred CAD software.
4. Your experience designing parts for CNC machining and 3D printing.
5. Your proposed approach to developing the throttle mechanism from reference material.
6. Your availability, estimated timeline, and preferred project pricing structure.

**Please do not apply if your experience is limited to visual 3D modeling or rendering. This project requires functional mechanical engineering.**

## About 525Charlie

525Charlie is a personal engineering project documenting the development of a full-scale Citation CJ4 home cockpit for Microsoft Flight Simulator.

You can see more of the project at **https://525charlie.com**.

I'm looking for a capable engineering partner who enjoys solving interesting mechanical challenges and takes pride in seeing a design move from CAD to a working physical assembly.

I’m kicking off a new web product and I want one skilled partner who can guide it from blank page to live release. The work begins with crafting a distinctive visual identity—logo, color palette and typography that feel fresh yet timeless—then flows straight into high-fidelity UI/UX wireframes and mock-ups built in Figma. Once I sign off on the designs, I need them translated into pixel-perfect, mobile-first layouts using React, keeping every screen crisp across modern browsers.

From there, you’ll stand up the back end in the language you know best—Node.js, Python or PHP are all acceptable—as long as the architecture is secure, scalable and cleanly documented. Count on managing a database layer (SQL or NoSQL to suit the use case) and wiring in common third-party services such as payments and authentication.

Please centre your proposal on relevant experience. Show me projects where you took a brand or interface from concept to fully deployed application; glossy screenshots are welcome but I value concise explanations of the problems you solved even more.

Deliverables I will use to sign off:

• Complete brand kit: logo files (SVG, PNG), color values and typography guidelines
• Figma source file with annotated user flows, plus export-ready assets optimised for the web
• Responsive React front end committed to a Git repo, meeting the approved pixel grid and passing Lighthouse performance checks
• Back-end codebase with API endpoints, environment configuration and README for local setup
• Deployed staging build for final acceptance

Acceptance is based on design approval, code review, successful end-to-end test cases and page-load scores. I’m responsive, decisive and ready to move quickly with the right expert.

Skills: Website Design, Graphic Design, Logo Design, Branding, User Interface / IA, Node.js, Full Stack Development, DevOps, Figma, Reverse Engineering

We are developing a JavaScript system that identifies installed Chrome extensions from signals observable by an ordinary webpage. The system will run in a controlled browser-testing environment against a predefined extension collection.
We are seeking a researcher with practical experience in Chrome extension internals, JavaScript reverse engineering, browser fingerprinting, and automated browser testing.
The work includes:
- Reviewing extension source code to identify observable behavior.
- Developing and testing detection hypotheses involving DOM changes, injected scripts, messaging, resource behavior, and other browser-visible effects.
- Building reproducible experiments using Python, Selenium or Playwright, and Linux/Docker.
- Testing clean profiles, individual extensions, and combinations of extensions.
- Measuring false positives, false negatives, runtime, and performance using our supplied evaluation protocol.
- Delivering source code, automated tests, experiment logs, and technical documentation.
Detection must work within normal webpage permissions and a strict execution budget. Fixed installation identifiers and privileged browser access cannot be assumed.
The first milestone is a paid feasibility study. Subsequent implementation milestones will depend on reproducible results.
Please include a relevant project, explain your personal contribution, and describe your first experiment for this problem.
The client handles downstream product integration. Commercial deployment details are confidential.

Ich betreibe eine WordPress-Seite, auf der aktuell pro Kunde nur ein Onlinekurs gekauft werden kann. Ich möchte das System so erweitern, dass jeder Kunde beliebig viele Kurse erwerben und anschließend über ein einziges Konto bequem darauf zugreifen kann.

Folgende Aufgaben warten auf dich:

• Vorhandene Lösung prüfen: Mit Hilfe von Claude existiert bereits ein erster Ansatz. Bitte inspiziere diese Vorarbeit gründlich, entwickle sie weiter und binde sie sauber in meine Seite ein.
• Reverse Engineering: Meine bisher genutzte Kurs-/Shop-Software soll technisch durchleuchtet werden, damit die nötigen Anpassungen für Mehrfachkäufe nachvollziehbar und sauber umgesetzt werden können.
• Kauf- und Zugriff-Logik anpassen: Sorge dafür, dass nach dem Checkout automatisch alle erworbenen Kurse freigeschaltet werden und der Kunde sie zentral in seinem Account findet.
• Qualitätssicherung: Teste alle Abläufe – vom Kaufvorgang bis zum Kursstart – und dokumentiere deine Schritte nachvollziehbar.

Rahmenbedingungen
– Die Seite läuft auf WordPress mit einem Kurs- oder Shop-Plugin.
– Sauberer Code, WordPress-Standards und Versionskontrolle (Git) sind mir wichtig.
– Ich erwarte eine kurze technische Einweisung, damit ich zukünftige Updates selbst einspielen kann.

Wenn du bereits vergleichbare Integrationen oder Custom-WooCommerce/LMS-Projekte umgesetzt hast, ist das ein Plus. Lass mich wissen, wie du vorgehst und welche Tools du nutzt, dann legen wir los.

Skills: PHP, WordPress, CSS, Software Testing, HTML, Git, WooCommerce, Reverse Engineering

This project serves the purpose of testing our Video Reverse Engineering platform VideoFormula.ai. You will need a windows PC or laptop AND you need a Capcut subscription. The goal of the software is to generate new videos faster using your existing videos or videos you find in the wild as inspiration.
Below REQUIREMENTS must be met:
• Over 21 years old
• Located in the United States of America
• Actively Use CapCut for Windows PC or Laptop
• Generate content for products or services
• Record themselves in video (not AI)
• May use AI for B-roll, narrator
• Windows 11 computer or laptop
• Can complete in 1 Week.


Here are the steps:
Your goal is to take an existing UGC video and then use that video as a reference to make another video for a similar product or service.
You will be taking an existing video you created, then using our software which
1. automatically generates a formula of your video,
2. you add a similar product/service to our system,
3. then generate a blueprint which modifies that formula and applies to the new product.
4. Finally we will convert the blueprint into a production guide for capcut. Once you are done, you can then “Send to Capcut” which will create a new project in CapCut, populate the timeline with the assets you provided, and have placeholders for assets that are missing (If any).

After this we will provide a survey to get opinions on multiple parts of the system.

Project Description:
Hello,
I am looking for a Canada-based Mechanical Engineer or Industrial Designer with solid expertise in Design for Manufacturing (DFM) for plastic injection molding.
The objective is to design from scratch, based on visual references and standard dimensions, a modular interlocking plastic block (made of recycled Polypropylene) used for the quick construction of swimming pool walls without any concrete filling inside the walls (similar concept to BlocktoPool in France).
The entire workflow must be executed on SolidWorks or equivalent advanced CAD software and includes two core phases:
1. 3D Modeling (CAD) of the Plastic Block:
• Engineering of lightweight yet highly resistant outer walls with internal ribbing (honeycomb structures) to withstand hydrostatic water pressure.
• Design of a precise, robust snap-fit interlocking system (male/female LEGO style) with strict tolerance management.
• Integration of internal channels for passing horizontal and vertical steel rebars.
1. Engineering of the Injection Mold Tooling:
• Creation of the core and cavity (the negative profile).
• Design of the mechanical or hydraulic slides/lifters required for demolding the internal honeycomb cavities.
• Optimization of injection gates and integration of water-cooling lines.
Expected Deliverables:
• Fully editable CAD source files (SolidWorks preferred).
• Standard manufacturing exchange files (STEP, IGES) for both the block and the mold.
• Basic structural FEA or Moldflow analysis (optional but highly valued).
Required Profile:
Certified Engineer or CAD Designer with proven experience in the plastics industry and complex slider-based injection mold design. Able to deliver production-ready assets for large industrial injection presses (500 to 800 tons clamping force).
Budget & Terms:
Fixed-price milestone contract or hourly rate. Please include samples of complex injected plastic parts or mold tooling designs from your portfolio in your application.

Hi, I’m developing my own product: a small set of wearable plastic clips with removable hot/cold gel pads, designed for injection moulding. I need concept sketches, CAD and 3D-printed prototypes, with full design ownership transferred to me. Details shared after an NDA. Have you designed for injection moulding before? What’s your rough fee for concepts and prototypes, and your availability over the next 2–3 months? Thanks!

KR,
Sonia

Senior Full-Stack Software Engineer | Android System Development, Rooted Devices & Real-Time Systems

Job Overview

I am looking for an experienced software engineer for long-term collaboration on multiple software development projects.

My projects include a web-based device management platform, Android applications, rooted Android device modules, real-time device communication, and other custom software solutions.

I need a developer with strong practical coding skills who can understand existing codebases, build new features, debug complex issues, optimize performance, and deliver reliable, well-documented solutions.

This is intended to be a long-term working relationship rather than a one-time task.

Main Responsibilities

1. Full-Stack Web Development

- Develop and maintain web applications using React.js, Next.js, JavaScript, and TypeScript.
- Build and maintain backend APIs and server-side functionality.
- Implement real-time communication using WebSockets and related technologies.
- Optimize frontend performance, API requests, database queries, and rendering.
- Develop scalable device management dashboards and administrative panels.
- Implement secure authentication, authorization, and session management.
- Debug existing applications and improve their architecture when necessary.

2. Android Application Development

- Develop and maintain Android applications using Kotlin and Java.
- Build APKs and integrate them with backend APIs.
- Implement reliable background processing and device-to-server communication.
- Diagnose Android compatibility issues across different Android versions.
- Analyze crashes, logs, permissions, and application lifecycle problems.
- Optimize application reliability, performance, and resource consumption.

3. Rooted Android & System-Level Development

Practical experience in rooted Android development is highly desirable.

Relevant technologies include:

- Magisk and Zygisk module development.
- LSPosed/Xposed framework.
- Android framework internals and Android Runtime (ART).
- Linux fundamentals, ADB, shell scripting, and Logcat.
- JNI and C/C++ for native Android components.
- APK analysis, DEX/Smali debugging, and authorized reverse engineering.
- Debugging compatibility issues across Android versions, particularly Android 14, 15, and 16.

Candidates should clearly explain which of these technologies they have used in real projects. The ability to demonstrate relevant previous work is a significant advantage.

4. Backend, Database & Server Management

- Develop secure and reliable backend services.
- Work with REST APIs, WebSockets, and real-time data synchronization.
- Design and optimize database schemas, indexes, and queries.
- Work with relevant databases such as PostgreSQL, MySQL, MongoDB, or Redis, depending on the existing project architecture.
- Manage Linux-based VPS environments.
- Troubleshoot server-side issues, review logs, and optimize resource usage.
- Understand deployment, backups, monitoring, and recovery procedures.

5. Code Quality & Project Delivery

- Review existing code before making significant changes.
- Write maintainable, modular, and well-documented code.
- Use Git and GitHub for version control.
- Write appropriate unit and integration tests.
- Explain technical decisions and potential risks before implementing major changes.
- Provide progress updates and clear reports describing completed work.
- Deliver source code, build instructions, documentation, and testing results.
- Avoid unnecessary rewrites or changes outside the approved scope.

Required Qualifications

- Strong professional software development experience.
- Solid knowledge of JavaScript/TypeScript and modern web development.
- Practical experience with React.js, Next.js, and backend API development.
- Strong Android development skills using Kotlin and/or Java.
- Experience with databases, networking, debugging, and software architecture.
- Familiarity with Linux servers and deployment workflows.
- Good understanding of software security and testing.
- Ability to work independently, communicate clearly, and meet agreed deadlines.
- Willingness to collaborate on multiple projects over time.

Experience with rooted Android devices, Magisk/Zygisk, and Android internals is a major advantage. Candidates with demonstrable expertise in both full-stack development and Android system-level development are especially encouraged to apply.

How We Work

- Projects are divided into clearly defined tasks and milestones.
- Major architectural changes require approval before implementation.
- Code must be committed to a Git repository with meaningful commit messages.
- Each milestone should include a summary of changes, the reason for the changes, tests performed, and any known limitations.
- Work must be tested in an appropriate development environment before delivery.
- Project confidentiality and secure handling of source code are essential.
- Payment will be based on agreed milestones or hourly work, depending on the project.

How to Apply

Please include the following information in your proposal:

1. A brief introduction and your professional software development experience.
2. Your strongest technical skills and the technologies you use regularly.
3. Links to relevant GitHub repositories, portfolios, or project demonstrations.
4. Your experience with React.js, Next.js, backend development, and Android development.
5. If applicable, details of your experience with Magisk, Zygisk, LSPosed, Android internals, and rooted-device development.
6. Examples of challenging technical problems you have solved and how you approached them.
7. Your hourly rate or preferred project-based pricing.
8. Your weekly availability and interest in long-term collaboration.

Important: Please distinguish between technologies you have actually used in working projects and those you have only studied.

I am looking for a technically strong, reliable developer who can contribute to real projects, solve difficult problems, and build a long-term professional relationship.

If you do these work and have required skillset and experience.get in touch with me asap
So we can discuss further

Skills: Java, JavaScript, Mobile App Development, Android, Node.js, Kotlin, Full Stack Development, Android App Development

I have an existing mechanical part that needs to be reverse-engineered into a precise 3D CAD model so I can generate full manufacturing documentation. You’ll receive a set of high-resolution photos of the part (and can have the physical sample shipped if helpful) and your task is to recreate it accurately, call out all critical dimensions, and prepare the manufacturing files I can hand straight to my machine shop.

The finished model has to be suitable for detailed technical drawings—section views, GD&T callouts, exploded views for assembly notes, and a clean bill of materials where applicable. STEP or Parasolid for the solid model and native SolidWorks or Fusion files would be ideal; drawings in PDF plus DWG/DXF for the shop are also required.

Deliverables
• Parametric 3D model of the part/assembly
• Fully annotated 2D drawings ready for CNC or sheet-metal programming
• Exported neutral files (STEP/IGES) and editable source CAD
• Short hand-off note highlighting assumed tolerances, finishes, and any open questions

I’ll turn around feedback quickly, so an iterative approach is welcome. If you’re confident with reverse engineering from photos, attention to tight tolerances, and clear, well-structured drawings, I’m ready to get started right away.

Skills: CAD/CAM, 3D Rendering, Solidworks, Mechanical Engineering, AutoCAD, 3D Modelling, 3D Design, 3D CAD

Review of a Raspberry Pi Compute Module 5 carrier board

We have designed a custom carrier board for the Raspberry Pi CM5 and want an experienced PCB engineer to review it before fabrication.

Board features:
- Raspberry Pi CM5 module
- LAN (Ethernet)
- Backup power supply
- I/O peripherals

Scope: review of schematic and layout (power design, PCIe and high-speed routing, CAN and Ethernet interfaces, CM5 pinout and connectors, general DFM). Deliverables: a written findings report and a live walkthrough with our designer.

Looking for: hands-on CM4/CM5 carrier board experience. Please share similar past work and the reviewer's qualifications. Design files will be shared only after a mutual NDA is signed.

I need a freelancer to reverse engineer an existing Android app and create a working clone that can run multiple instances on a single phone. The goal is to replicate the app’s core functionality and ensure the cloned version operates reliably on Android devices. Please share relevant experience with app cloning, reverse engineering, and Android development. Also, i need built in proxies to the generated cloned app and ensuring each app clone reads new device android fingerprints, can change region in the app. emulate SIM carrier as well.

Convert 3D Scan into Step file.

External Sheet metal surface. No auto surface allowed.

We are seeking an AI/ML Engineer to develop and implement NLP solutions for our company. The ideal candidate will have experience in machine learning, natural language processing, and data analysis. You will be responsible for designing, testing, and deploying NLP models to improve our products and services. This is a full-time position with a commitment of 40 hours per week.