Freelance Crypto Jobs: Find the Best Freelance Opportunities in Crypto

We are seeking a talented designer to enhance the visual and structural design of DeCine, a Web3-powered film-finance platform. The project involves using AI-assisted design tools to redesign key pages and create a clean, cinematic look that aligns with our color palette and typography.

I need to create a vm and then follow some instructions from me with my solidity project

I hope you're doing well. I'm currently working on three Solidity-based projects and would appreciate your help with both the development and initial environment setup.

Specifically, I need support with:

Setting up a Virtual Machine (VM) with internet access configured for Ethereum development tools (e.g., MetaMask, Remix IDE, Hardhat, etc.).

Project 1 – Ethereum Flash Loans: Developing and testing a contract that performs flash loans on testnets (e.g., via Aave or DyDx protocols).

I have a video for this project and if you do the job right i have another 2 tasks...

We are seeking an experienced web3 engineer to lead the transition of our online shop into the crypto space. The ideal candidate will have a strong background in smart contract development and be able to guide our team through this significant technological shift.

We are looking for a talented User-Generated Content (UGC) creator to produce 2-3 short videos that resonate with our target audience.

Videos are needed by Friday so we are looking to move quickly!

You will create engaging short TikTok-style videos showcasing a fast, low-fee, no-DeFi crypto wallet.

You will be responsible for producing 2-3 ready to post, authentic, on-camera videos sharing your story about why you switched or started using the wallet.

Ideal candidate: male, 18-45 years old, able to speak naturally about crypto

If you're interested please send a proposal now!

• Send 2-3 examples of similar UGC work
• What is your experience/familiarity with crypto and the tehc space? (Not required, but helpful)

💼 Job Description:

We are looking for motivated and well-connected Remisers / Client Acquisition Partners who can introduce potential clients to our financial and investment services (like Demat accounts, mutual funds, stock trading, portfolio management, etc.).

You will act as a link between clients and our company, helping clients start their investment journey with us.
In return, you’ll earn attractive commission-based payouts for every successful client onboarded through you.

🧠 Responsibilities:
• Identify and connect with potential investors and clients.
• Explain our financial products and services.
• Assist clients with account opening and initial onboarding.
• Maintain long-term relationships for repeat business.

💰 Earning Structure:
• Purely commission-based (percentage on brokerage / business volume).
• High-income potential — the more clients you bring, the more you earn.
• Transparent payout system.

✅ Ideal Candidate:
• Experience in finance, stockbroking, insurance, or investment advisory preferred.
• Good network and communication skills.
• Freelancers, agents, or business-minded individuals are welcome.

📍 Location:

Open to all cities in India (remote collaboration possible).

📞 Note:

If you already have a client base interested in trading, investing, or mutual funds — this role is perfect for you.

Summary
- Location: Remote
- Schedule: Full-time, Monday–Friday, 9 AM – 7 PM Amsterdam time (1-hour break) Experience: 5+ years
- Type: Full-time
- Compensation: $4,000–$6,000/month (based on experience and expertise)
- Note: Full-time only – no freelancers or agencies

Important Notice
- Individual developers only, no agencies or consulting firms. If we discover you are working through an agency, we will report the violation to Upwork and pursue account sanctions.
- This is a full-time position through Upwork requiring exclusive commitment
- No freelancers or part-time arrangements will be considered
- You will be required to sign an NDA and employment contract confirming exclusivity

## About the Company
We are an innovation-driven AI & SEO technology company building next-generation tools that merge Generative AI with Search Optimization. Our mission is to redefine how businesses optimize content performance across both traditional search engines and emerging AI-driven search ecosystems.
As part of our engineering team, you’ll help develop powerful AI-driven SEO tools that enable users to analyze, optimize, and scale their online visibility like never before.

## Position Overview
We’re seeking a Senior MERN Stack Engineer with deep expertise in Generative AI and SEO to join our growing product team. This role involves designing, developing, and deploying advanced AI-powered SEO platforms and web applications. You’ll integrate cutting-edge AI models, develop intelligent SEO automation systems, and build scalable full-stack solutions that push the boundaries of modern web and AI technology.
The ideal candidate combines strong MERN stack engineering expertise with practical knowledge of AI model integration, prompt engineering, and SEO optimization strategies.

## Key Responsibilities

### AI & SEO Product Development

- Design, develop, and scale AI-driven SEO tools using the MERN stack (MongoDB, Express.js, React, Node.js)
- Build systems for AI-powered keyword research, content optimization, and SEO analytics
- Implement AI integrations with APIs from OpenAI, Anthropic, and other providers
- Develop predictive and intelligent algorithms to optimize SEO performance
- Work on AI model fine-tuning for SEO-specific use cases and improve generative model outputs

### Backend Architecture & API Engineering

- Build robust, scalable RESTful APIs and microservices for SEO automation tools
- Integrate AI, analytics, and SEO data pipelines into product backends
- Manage data flow and caching with MongoDB, Firebase, and cloud platforms (GCP/AWS)
- Ensure system reliability, scalability, and security through best DevOps practices

### SEO & AI Innovation
- Apply advanced SEO principles to improve AI-generated outputs and rankings
- Use AI and data-driven insights to enhance technical SEO strategies
- Continuously experiment with AI-enhanced SERP analysis, semantic search, and content scoring
- Collaborate with product and data teams to align AI innovations with SEO goals


## Required Qualifications

### Technical Expertise
- 5+ years of experience in full-stack development using the MERN stack
- Strong proficiency in JavaScript, TypeScript, React, Node.js, Express.js, and MongoDB
- Hands-on experience with Python for AI integration and automation
- Proven track record of building production-grade AI-powered web applications
- Solid understanding of microservices architecture, APIs, and distributed systems
- Proficiency with Git, CI/CD, and cloud platforms (GCP preferred)


### AI & SEO Expertise
- Deep knowledge of SEO fundamentals, ranking algorithms, and optimization techniques
- Experience integrating generative AI models (OpenAI, Anthropic, etc.)
- Strong command of prompt engineering and AI model fine-tuning for content/SEO tasks
- Familiarity with semantic search, knowledge graphs, and content scoring models
- Understanding of how AI impacts modern search optimization (AI Overviews, GEO)

### Preferred Qualifications
- Experience with Next.js or NestJS
- Familiarity with vector databases (Pinecone, Weaviate, Qdrant)
- Knowledge of Google Cloud Functions and Firebase integrations
- Prior work developing AI-driven analytics dashboards or SEO automation tools
- Understanding of Generative Engine Optimization (GEO) principles

### Project Focus Areas
You’ll contribute to innovative AI-driven SEO platforms such as:
- AI-SEO Studio: Intelligent SEO optimization suite leveraging LLMs
- Keyword Intelligence Engine: AI-based semantic keyword clustering & content mapping
- Predictive SEO Analyzer: Machine learning models that forecast search performance
- Content Generation Assistant: Human-like AI content system optimized for SEO metrics

## Employment Requirements
- Must work exclusively for our company during employment
- Must sign NDA and exclusivity agreement done by our lawyer
- Must be available during Amsterdam business hours (9 AM–7 PM)
- Strong written and spoken English skills required

## Why Join Us

- Innovation at Scale: Work on AI-powered SEO solutions used globally by marketers and developers.
- Cutting-Edge Tech: Leverage state-of-the-art AI models, APIs, and generative systems.
- Career Growth: Shape the evolution of AI-driven SEO as part of a visionary engineering team.
- Collaborative Culture: Join a high-performance, innovation-driven environment focused on quality and impact.


How to Apply
Required Application Materials:
1\. Technical Portfolio (Required)
○ GitHub or project links showcasing MERN + AI projects
○ SEO tools or AI-powered web applications you’ve developed
○ AI integrations or fine-tuning examples

2\. Cover Letter (Max 400 words) – Include:
○ Your experience with AI and SEO integration
○ A key technical challenge you’ve solved using AI for SEO
○ Your approach to building scalable AI-based SEO tools

3\. Resume – Highlight:
○ AI-powered web development experience
○ SEO-focused projects and quantifiable impact
○ Relevant full-stack engineering and cloud architecture work

4\. Optional: Certifications, publications, or open-source contributions in AI/SEO

Hi Jenny,

I am looking to have a travel poster created that is a composite of a vintage travel poster, but changing some colors and the setting to be the current look of the window in the poster and then replacing the people in the poster with my daughter and her boyfriend. It does not have to be hyper realistic - i want the people to resemble my daughter and her boyfriend and i want them glancing at one another. The original travel poster is attached, as well as photos of the scene in the poster that we took while visiting recently (note no curtains on window). Also attached are photos of my daughter and her boyfriend, including one of my daughter in a dress sitting in a similar pose. I'd like to replace the wording on the poster to note have the "Alpine Wonderland" words but to have the rest of the words. Finally I'd like to change the colors from the dark pinks/purples to something that better compliments the blues and greens of the outside scene. I'd love your suggestion on whether this should be a watercolor, drawing, or other medium that you think will best recreate the vintage travel poster feel. I can provide more photos if helpful

looking for a experienced developer with discord experience to setup my crypto server where we give alpha calls and real time updates in memecoin space.

This includes bots for twitter trackers, token trackers, dex paid tracker, wallet trackers of top traders.

And stuff like that.

If you have experience with this kind of work, lets get started asap, i want to get this completed today!

write "understood" SO i know you read everything!

Looking for an experienced Solidity / Web3 developer to upgrade our existing ERC-20 token (NYAX) with full governance and admin functionality.

We need:

Mint, burn, freeze/restrict transfer capabilities

Token-holder voting (DAO) using ERC20Votes or similar

Role-based permissions (admin/minter/burner/pauser)

Snapshot-based voting and on-chain or Snapshot.org governance

Integration with Safe (Gnosis) or Aragon for proposal execution

Exportable list of token holders (subgraph or dashboard)

Tech stack preference: OpenZeppelin, Hardhat or Foundry, Governor + Timelock, Snapshot/Tally UI.
Bonus if you’ve worked on DAO or compliance tokens (ERC-3643).

We are seeking a highly skilled Senior Blockchain Full Stack Engineer for building a cutting-edge Exchange Application. The ideal candidate will possess extensive experience in blockchain technologies, smart contracts, and full-stack development. You will be responsible for designing, developing, and deploying scalable applications that facilitate secure cryptocurrency transactions.

Key Responsibilities:

Develop and maintain the front-end of the Exchange Application using modern frameworks and technologies.
Collaborate with product managers and designers to create user-friendly interfaces.
Implement smart contracts on blockchain platforms such as Ethereum or Binance Smart Chain.
Ensure the application is secure, efficient, and scalable to handle high transaction volumes.

For a fintech project focused on high-frequency trading, we are looking for a top-tier specialist focused on high-performance data acquisition.

The Core Challenge:
The role involves creating and maintaining a suite of robust, low-latency parsers. The primary goal is to acquire data from web sources protected by sophisticated bot-mitigation technologies with millisecond-level speed.

This is a role for an expert in protocol-level interaction. We are looking for a specialist in API reverse-engineering, network traffic analysis, and replicating client-server communication.

Stack & Requirements:

The parsers can be developed in any suitable high-performance language (Python, Go, Rust, Node.js, etc.). The choice of technology is secondary to your proven ability to deliver low-latency, reliable results.

You must be able to demonstrate existing work or a Proof-of-Concept of a high-speed parser.

Developers must be fluent in Ukrainian or Russian.

To ensure you have read this description carefully, please start your proposal with the word "millisecond".

This is a long-term opportunity for developers who enjoy solving technical puzzles.

• What is your primary method for parsing data from a site protected by Cloudflare when a public API is unavailable? What technologies do you prioritize for high-speed (millisecond-level) tasks?
• Have you developed parsers for crypto exchange announcements or social networks (e.g., Truth Social, Twitter)?
• Provide a specific example of a high-performance parser you have built. What was the target, and what was the lowest stable latency (in milliseconds) you were able to achieve?
• Do you have an existing parser or a PoC that you can demonstrate (e.g., via a short video or a live demo) that meets the low-latency requirement?
• Include a link to your GitHub profile and/or website

I am seeking a seasoned Digital Asset Consultant to facilitate the secure acquisition of 100 digital tokens, with a total transaction value of $200 USD. The ideal candidate must possess a robust background in blockchain technology and digital asset management, ensuring a seamless and secure purchasing process. Essential qualifications include proficiency in wallet-to-wallet transfers and comprehensive knowledge of digital trading systems. Timeliness is crucial, as I require prompt execution following payment confirmation. Only trustworthy freelancers with proven experience in online transactions should apply. Let's discuss the specifics privately before commencing.

We are seeking a freelancer with a UX Designer, Product Manager, or Product Marketing background and a solid understanding of cryptocurrency.
What is needed:
Review and document the onboarding flow of 6 crypto apps that enable payments with crypto in the USA. Capture screenshots of each part of the flow and provide professional insights on the user experience.
Detailed Requirements:

Screenshots of all app screens (App Store listing, KYC, verification, payment processes)
Review and document the credit card issuing process flow
Document fees charged by each app for crypto payments
Provide professional insights on the UX of each app (strengths, friction points, best practices)
Make at least 1 payment with each app (we will reimburse the transaction amount)

Ideal Candidate:
If you're passionate about cryptocurrency and have a keen eye for detail, we'd love to hear from you. There is potential for ongoing work.

• Describe your background in Crypto
• Describe your background with mobile apps

We are building NFT Airdrop Platform. We are seeking an experienced Blockchain Engineer to assist in building decentralized applications and smart contracts. You have to work on on-going project. The ideal candidate should have hands-on experience with Ethereum or other EVM-compatible chains, Solidity, and Web3 tools.

We are launching a faceless YouTube documentary channel focused on real legal dramas, crypto scandals, and courtroom stories — similar in tone to MagnatesMedia, Jake Tran, and A&E Court Cam.

We already have professionally written 8–10-minute scripts and want to work with someone (or a small team) who can edit the videos AND grow the channel through optimized SEO, thumbnails, titles, analytics, and promotion.

We are an innovative team developing a new blockchain-based trading platform with an innovative earning system, looking for a Senior Blockchain Developer.

The ideal candidate will have a strong experience in both frontend and backend development - UI/UX design, API integrations and database management especially MongoDB.

You will develop the core smart contracts on multiple chains, write and deploy LMNG token contracts. Develop puzzles and challenges for developers to crack.

You will also develop a React web page based on the provided Figma design. You will work closely with designers and take ownership of important projects from the get-go.

Requirement a must:

1. Solidity/Smart-Contract developer

-Experience writing Layer 1 code, e.g. EVM or Tendermint
-Reward tokens, Token Security, ERC20, ERC721, ERC1155 token, Gas Optimization
-Proficient in Solidity language
-3+ years of smart contract development experience
-Love for coding puzzles and challenges

2. Web3 Builder

-Web3 Crypto wallet connect experience.
-String, third party API integration.
-Familiar with React/TS/TailwindCSS development
-Pixel-Perfect, browser/device compatible Webpage

3. Full Stack Engineer

-String, third party API integration.
-Node.js Express, API development and API integration
-Principle MongoDB Database structure
-Git Management System

We’re looking for a native English speaker to record daily crypto technical analysis videos on a part-time basis. Your task will be to provide short market commentaries using TradingView charts and OBS Studio (we can share a simple setup guide if needed).

Each video should be around 3–4 minutes long, focused on key crypto market trends and technical setups. No editing or post-production is required — simply record and upload your videos to our platform.

A solid understanding of crypto markets, clear delivery, and good sound quality (using at least a semi-professional microphone) are essential for this role.

An example video is attached for reference — please note that it’s focused on the forex market, but the format and style are the same.

We are seeking a skilled blockchain developer to integrate a wallet at the backend of our system, specifically to swap tokens through Jupiter Swap. The ideal candidate will have experience with blockchain technology, wallet integration, and token swapping processes, ensuring seamless and secure transactions. Additionally, the integration should include a turnkey wallet solution.

• Include a link to your GitHub profile and/or website
• What frameworks have you worked with?
• Describe your recent experience with similar projects

We are seeking an expert to develop and optimize arbitrage and flash loan bots. The ideal candidate will have extensive experience in blockchain technology and smart contracts, with a strong focus on creating efficient and secure trading solutions.

We are a video production team working on an active YouTube channel, and we are looking for an additional skilled video editor to join us. We already have an advanced lead editor – your job will be to support and follow the editing style we already use, not replace it. If you cannot match the style, this role will not fit.

We produce high-energy, clean, and engaging edits. We will provide the main audio/video, and you will focus on:

Cutting/structuring clips

Adding non-copyrighted drawn animations/effects (DRAW style)

Clean transitions

Background SFX and pacing.

Here is the reference video: https://youtu.be/RYYwsiJtx1U?si=7HFeScqq66vrfF4h

We only pay in crypto for security reasons.

We are seeking a skilled community manager to oversee and engage with our cryptocurrency community. The ideal candidate will have experience in managing online communities, creating engaging content, and implementing social media strategies to enhance community interaction and growth.

Looking for a highly talented NFT artist to build an NFT with 60-70 unique traits. You can use AI for the job but the visuals must be high quality.

- 10-15 base traits like backgrounds
- 20 unique facial expressions (different eyes, mouth)
- 30-40 clothing styles and accessories
- Maybe 10-20 rares (would add extra payment for rares like diamond ,gold, etc)

It needs to be a highly diverse collection. This is the right job for someone who is good with AI and can use this base NFT to add and/or strip traits with the same level of quality as the original image. They would also need to be available and start working immediately to get this done in about a week or two max.

❗Take a look at the attached SampleNFT.png to see if you can deliver this style and level of quality.

Budget is $1500 but we can go up to $1700-2000 depending on the quality, speed, and extras involved. Basically all you'll do is take off the hoodie and start with a base body and add traits to it, then save those traits as individual pngs/layers in different folders so when we use the final generator it spawns thousands of unique pieces.

I’m looking for someone to review an ERC-20 token smart contract before launch. I want to be sure the contract is safe, clear, and built to standard. The project is simple, but I need an expert who understands Ethereum, Smart Contract Development, and general Blockchain practices.
You should be able to walk me through any risks and suggest clear fixes. A background in Web3 or Defi work is helpful, but the main focus is a clean and reliable audit.

We are seeking a freelancer or a group of freelancers to assist in testing a crypto payment gateway. The ideal candidate(s) should have access to real US IDs, phone numbers, and credit cards to conduct thorough testing. Experience in payment gateway testing is preferred.

1. Backend Engineer (Node.js, Real-Time Trading)

Company: Stealth Startup
Engagement: 3 month contract to start, with an option to extend or convert
Time overlap: Minimum 4 hours overlap with India Standard Time

About the role

We are building real-time trading services: a gateway based on uWebSockets.js, a matching engine, a materializer service on MongoDB, and an internal message log. You will make sure orders are received once, processed once, and broadcast to connected clients quickly and safely.

What you will do

Build and improve real-time order and trade flows in Node.js 18 or higher.

Make order placement safe across reconnects by using idempotent keys and proper acknowledgement.

Maintain the WebSocket gateway: authentication, subscriptions, publishing of order book levels, trades, and confirmations.

Add guardrails such as backpressure, retry with backoff, and clear error handling.

Work with MongoDB 6 driver to store and materialize current market state.

Containerize services with Docker and expose health and metrics endpoints.

Work closely with frontend and cloud engineers so that the same messages are easy to consume.

What you should bring

3 to 6 years of experience with Node.js in production.

Strong understanding of asynchronous programming, streaming, and backpressure.

Experience with real-time systems using WebSockets or similar technologies.

Comfortable handling prices and quantities as BigInt or high-precision numbers so that balances stay correct.

Working knowledge of MongoDB, environment-based configuration, and JSON Web Tokens for authentication.

Bonus: experience with cryptocurrency or exchange style feeds such as Binance WebSocket and REST.

How we will evaluate

We may ask you to describe how you would keep order placement idempotent across reconnects.

We may ask for a short code sample that batches incoming messages by count or by time.

We may do a 60 to 90 minute paid take-home that is close to our real problem.

How to apply

Send:

Your resume or LinkedIn profile.

A short note about one real-time or WebSocket problem you solved.

Your earliest start date.

2. Frontend Engineer (Next.js, Real-Time Trading Interface)

Company: Stealth Startup
Engagement: 3 month contract to start, with an option to extend or convert
Time overlap: Minimum 4 hours overlap with India Standard Time

About the role

We want a trading interface that feels instant even when there are more than one thousand order book updates every minute. You will build that in Next.js 15 (Turbopack) and React 19 with TypeScript.

What you will do

Build pages for trading and dashboards that show live order book, recent trades, depth chart, and order panel.

Connect to WebSocket streams, manage reconnection, and resubscribe to user channels after reconnect.

Normalize incoming data so that charts and tables do not re-render more than needed.

Integrate data from the materializer service for symbols and historical candles, and handle gaps in historical data.

Use Redux Toolkit style patterns, memoization, and selectors to keep frame rates high.

Prepare the application for deployment with environment-driven endpoints and good content security.

What you should bring

3 to 5 years of experience with React and Next.js in production.

Strong TypeScript skills.

Experience rendering fast tables or charts from streaming data.

Understanding of how to avoid unnecessary renders in React.

Comfortable with charting tools such as Lightweight Charts, Recharts, or a TradingView style data feeder.

Bonus: experience with message pack formats, Tailwind CSS version 4, or real trading user interfaces.

How we will evaluate

We may ask you to show how you would process and render more than one thousand order book updates in one minute without user interface freezes.

We may ask you to code a small chart that applies live open, high, low, close bars and fills a missing bar.

We may ask for a short, focused take-home aligned to the above.

How to apply

Send:

Your resume or portfolio links.

A link to a live React or Next.js project you built (GitHub is fine).

Your earliest start date.


3. Cloud and DevOps Engineer (Amazon Web Services, Containers, WebSockets)

Company: Stealth Startup
Engagement: 3 month contract to start, with an option to extend or convert
Time overlap: Minimum 4 hours overlap with India Standard Time

About the role

You will set up a simple and cost-aware environment on Amazon Web Services for development and staging. Our services are containerized (gateway, engine, materializer, message log) and need WebSocket ingress, secrets, logs, and deployment pipelines.

What you will do

Containerize all services with Docker and push images to Amazon Elastic Container Registry.

Run services on Amazon Elastic Container Service using Fargate so that there are fewer things to manage.

Put an Application Load Balancer or Network Load Balancer in front of the WebSocket gateway and terminate Secure Sockets Layer with Amazon Certificate Manager.

Place the engine and materializer into private subnets and allow only the gateway or internal services to reach them.

Set up GitHub Actions (or similar) to build, push, and deploy on every main branch change.

Store configuration and secrets in AWS Systems Manager Parameter Store or AWS Secrets Manager.

Send logs and metrics to Amazon CloudWatch and create basic alarms.

Document runbooks for deployments and cost control.

What you should bring

4 to 7 years of experience with Amazon Web Services in real projects.

Strong experience with containers and running them on Amazon Elastic Container Service using Fargate.

Knowledge of how to pass WebSocket connections through load balancers.

Experience with GitHub Actions or another pipeline tool to build and deploy containers.

Experience with secrets management, logging, and metrics on Amazon Web Services.

Bonus: experience with MongoDB Atlas on Amazon Web Services, Virtual Private Cloud peering, or cost optimisation.

How we will evaluate

We may ask you to sketch a minimal Amazon Web Services setup for a WebSocket gateway with Secure Sockets Layer termination and sticky sessions.

We may ask you to show a GitHub Actions workflow that builds, pushes to Amazon Elastic Container Registry, and deploys an Amazon Elastic Container Service service.

We may ask how you would rotate JSON Web Token keys safely.

The ideal candidate will have extensive experience in blockchain technology and a deep understanding of decentralized finance (DeFi) principles. You will be responsible for designing, developing, and deploying robust DEX applications that prioritize security, scalability, and user experience.

Key responsibilities include implementing smart contracts using Solidity, and optimizing the performance of DEX protocols. A strong background in JavaScript frameworks, such as React or Next.js, is essential for creating intuitive user interfaces.