Contact person: Business Client

Phone:Show

Email:Show

Location: Warsaw, Poland

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"We are a startup seeking a skilled Web3 Developer to integrate blockchain functionality into our existing React.js + Vite frontend. This is not just a technical role—our ideal candidate understands business logic, can collaborate closely with managers, and can translate product requirements into reliable Web3 functionality.
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Responsibilities
• Integrate Web3 logic into our existing React/Vite application
• Understand the business model and product flow
• Discuss and refine requirements with project managers and founders
• Implement blockchain interactions using Wagmi, Viem, [login to view URL], RainbowKit, or similar libraries
• Build clean wallet connections and contract interactions
• Ensure blockchain behavior aligns with UI/UX requirements
• Work with REST/GraphQL services when required
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Required Qualifications
• 4+ years of professional experience in the software industry
• Strong knowledge of Web3 development, including:
o Wallet integration (MetaMask, WalletConnect, Coinbase Wallet, etc.)
o Contract read/write execution
o RPC handling, event listening, signatures, and transaction lifecycle
o Understanding Ethereum/L2 basics (no need for Solidity writing)
• Proficiency in React.js (hooks, state patterns, reusable component design)
• Ability to understand and translate business logic into proper Web3 flows
• Strong communication and team collaboration skills
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Nice to Have
• Experience with Vite
• Familiarity with L2 or testnet development
• Understanding of dApp security and performance considerations
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Important Applicant Requirements (READ CAREFULLY)
[IMPORTANT] We follow Freelancer.com policies — do NOT propose any external communication channels.
All communication must remain on the platform.
- Mandatory Requirements
• Voice Call Interview:
You must be available for a voice call using Freelancer's built-in call feature.
If you cannot join a voice call, do not apply.
• Instant Live Skill Assessment (10–15 minutes):
During the voice interview, all candidates will complete a short, live Web3 assessment to verify basic competence.
This is a straightforward task for real Web3 developers and takes less than 10–15 minutes.
If you are unwilling or negative about doing this live assessment, please do not apply.
• Portfolio/GitHub Requirement:
Include:
o Your GitHub profile,
o Links to sites/dApps you have built, or
o A verified portfolio of your own work.
Applications without these will be ignored.
• Authenticity:
Do NOT submit other people’s GitHub links, repos, or portfolios.
We value honesty and consistency above all else.
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How to Apply
Please include in your application:
1. Your years of experience
2. Link to your GitHub and/or live projects
3. Confirmation you can join a voice call
4. Confirmation you agree to the 10–15 minute live assessment
5. (Optional) Brief description of your Web3 integration approach" (client-provided description)