Development of a Decentralized Exchange (DEX) Platform
7000 USDWe are developing a modern Decentralized Exchange (DEX) platform designed to offer secure, fast, and user-friendly token swaps across multiple blockchains.
At this stage, we are working with a well-defined technology stack and have several components in either a Proof of Concept (PoC) or early production phase. The goal is to gradually bring these components to a fully functional and production-ready system.
We’re looking for talented professionals who can join us on specific tasks — from completing remaining PoCs to building core production features.
💡 Key Features (current and planned):
Cross-chain token swapping
Liquidity pool integration
Wallet connection (e.g., MetaMask, WalletConnect)
On-chain and off-chain data handling
Basic trading UI/UX
Smart contract development and audits
👤 Who We're Looking For:
We’re open to collaborating with:
Blockchain developers (Solidity, Rust, EVM, etc.)
Front-end developers (React, TypeScript, Web3.js, ethers.js)
Back-end developers (Node.js, NestJS, PostgreSQL, etc.)
DevOps engineers with Web3/Node hosting experience
QA/testers familiar with smart contract environments
🔍 What We Expect:
Proven experience in Web3/blockchain development
Understanding of DEX mechanics and security
Clean, maintainable code and collaborative mindset
Ability to work independently and communicate clearly
📍 Project Stage:
Some features are already validated (PoC completed)
Others are under development or in planning
We’re open to suggestions on tools, stack adjustments, or tech optimizations
📩 How to Apply:
Please send us:
A brief introduction and relevant experience
Links to past projects (especially Web3/DEX)
Your availability and rate
Please start your proposal with “👋”.
We’re excited to find professionals who are passionate about decentralized technologies and can contribute meaningfully to our project.
-
6 days7000 USD6 days7000 USD
Good afternoon, there are reviews on another platform, write to discuss everything in private messages
-
30 days7000 USD
206 30 days7000 USDHi! I'm a passionate developer with hands-on experience in building Web3 applications, smart contracts, and full-stack blockchain systems. I'm excited about contributing to decentralized technologies and can help drive your PoC components to production-ready systems.
-
1 day7000 USD
261 1 day7000 USDHello!
Thank you for your request and the cool project! I am a developer with experience in creating Web3/DEX solutions: cross-chain token exchange, MetaMask/WalletConnect integration, smart contracts in Solidity. I have worked with React, TypeScript, ethers.js for the frontend and Node.js, NestJS for the backend, as well as conducted smart contract audits. I have implemented DEX prototypes with liquidity pools, translated PoC into production-ready solutions.
Ready to take on refining the PoC, developing features, or conducting audits, and can suggest stack optimizations. I can show examples of my work: [link to DEX or Web3 project/repository, if available].
Write to discuss details and tasks! Have a great day!
-
1 day25 000 USD
319 1 day25 000 USDGood afternoon, we specialize in turnkey website development, web development, website layout on PHP, frameworks like Laravel, HTML, CSS, including WordPress. We develop websites on PHP, frameworks on Laravel, and mobile applications for iOS and Android turnkey.
We develop websites on PHP and mobile applications for iOS and Android.
We have experience in creating CRM/ERP systems.
We are ready to execute your order turnkey.
We develop websites on WordPress and mobile applications for iOS and Android. The total development experience is 7 years. We are ready to execute your order turnkey.
1. Projects
https://berkanaplus.com.ua/ - This site was migrated and the server was configured.
2. https://leondesign.kyiv.ua/
… PHP version updates and plugin updates.
3. https://peg.com.ua/
Development of a new module for the site for dynamic pricing updates.
https://uvali.com.ua/
Configuration of a dedicated VPS server. 📈 Internet marketing and promotion:
Setup of advertising on Google Ads, Facebook, TikTok
SEO and copywriting
Promotion through push notifications and in-app advertising
Marketing analytics, A/B testing, campaign optimization
📈 Internet marketing and promotion:
Setup of advertising on Google Ads, Facebook, TikTok
SEO and copywriting
🎨 Design solutions:
In-house design department
-
20 days7000 USD
396 20 days7000 USD👋
Hello!
My name is Aleksey, I represent the development team – NC-1.
Our team has specialists with the experience and knowledge you need.
Frontend developer (React, TypeScript, Web3.js, ethers.js) - hourly rate: 23 USD
Backend developer (Node.js, NestJS, PostgreSQL, etc.) - hourly rate: 23 USD
DevOps engineer with experience hosting Web3/Node - hourly rate: 20 USD
QA testers familiar with smart contract environments - hourly rate: 19 USD
I can send a resume.
… Portfolio – https://nc-one.com/case-studies
Best regards, Aleksey M.
-
29 days20 996 USD
15075 32 0 1 29 days20 996 USD👋 Good afternoon!
My name is Valentin, and I represent Arctic Web Agency. We are a team of experienced web developers specializing in creating modern and effective web solutions for business. I can provide examples of our similar work in private messages. Ready to take on your project!
Best regards,
Arctic Web Team
Freelancehunt
-
29 days7000 USD
162 29 days7000 USD👋, I am Vladislav, I am a full stack developer with experience in a startup as a front-end developer (6 months) and a total development experience of 1 year. I would like to offer myself for the role of front-end developer as this is my strong suit. I am available part-time (4-5 hours a day, 5 days a week), $10/hour.
I have projects in my portfolio.
-
14 days7000 USD
280 14 days7000 USD👋
I came across your DEX project and it really resonated with me — building a fast, secure, and user-friendly cross-chain platform is an exciting challenge, and I’d love to contribute.
I’m a developer with solid experience in Solidity, React, and Node.js, and I’ve worked on projects involving smart contract development, wallet integration, and building Web3-enabled interfaces.
I’m confident I can help finalize your PoCs and move core features into production smoothly. I’m also happy to suggest improvements or optimizations along the way.
Let’s connect — I’d be excited to learn more about your roadmap and how I can support the team.
… Looking forward to hearing from you!
-
5 days7000 USD
475 2 0 5 days7000 USDHello! I have a ready-made demo version, ready to discuss.
https://same-awg6vk5trg3-latest.netlify.app
-
14 days7000 USD
258 14 days7000 USDHi Jackson,
I'm Georgios, a senior full-stack & Web3 developer with a solid background in decentralized applications, smart contracts, and cross-chain integrations. I’d love to support your DEX project — whether it's finalizing PoCs, building production-ready components, or optimizing your stack.
Relevant Experience:
Smart Contracts: Solidity (ERC-20/721/1155), Rust (Solana), custom swap/LP logic, contract audits
Cross-Chain Swaps: Experience integrating LayerZero, Wormhole, Axelar for interoperability
… Frontend: React, TypeScript, Wagmi, Web3.js, ethers.js, viem
Wallet Integration: MetaMask, WalletConnect, Coinbase Wallet
Backend & Infra: Node.js, NestJS, PostgreSQL, Moralis, The Graph, IPFS
Testing: Hardhat, Foundry, Chai, smart contract fuzzing
DevOps: Docker, PM2, GitHub Actions, IPFS, Infura/Alchemy integration
Availability & Rate:
Availability: 30–40 hrs/week
Hourly Rate: $50/hour (flexible based on scope)
Can also join on milestone/project-based terms
I’m highly familiar with DEX mechanics, DeFi security principles, and collaborative agile development. Let’s discuss how I can contribute to building a reliable, secure, and scalable DEX with your team.
Looking forward to your reply!
Best regards,
Georgios Toutoudakis
-
9 days7000 USD
167 9 days7000 USD👋 Hello,
My name is Arthur, co-owner of SUBI Labs – a team of experienced developers creating robust Web3 solutions. We’re ready to enhance your DEX, implementing cross-chain token swaps, liquidity pool integration, wallet connections, and other features, bringing the project to a production-ready state.
Our expertise in Web3 projects is backed by a strong portfolio. We guarantee clean code, clear communication, and alignment with your goals.
Let’s hop on a call to discuss the tasks? Budget and timeline depend on the scope of work. Ready to share examples and discuss rates.
Looking forward to your response!
…
Best regards,
SUBI Labs Team
-
Change the project status to vacancy, or it will be blocked!
-
Current freelance projects in the category Cryptocurrency & Blockchain
Need Smart Contract Engineer/Mentor
8000 USD
I want to find the Smart Contract Engineer/Mentor who has rich experience in Solidity smart contract development. Cryptocurrency & Blockchain, Engineering ∙ 3 days 20 hours back ∙ 11 proposals |