Blockchain/Web3 Developer

Employment Type: Contract/Full-time/Part-time

Project Duration: 6-7 months (with potential for extension on subsequent projects)

Location: Remote/On-site (Flexible)

We are seeking an experienced Blockchain/Web3 Developer to join our team in building cutting-edge blockchain features for our Web3 gaming platform. The ideal candidate will collaborate closely with our full-stack development team to integrate smart contracts, implement cross-chain functionality, and enhance the platform's Web3 capabilities.

Key Responsibilities

1. Smart Contract Development & Integration

• Design, develop, and integrate smart contracts for gaming platform features
• Implement and maintain ERC-721, ERC-1155, and custom token standards
• Integrate smart contracts with frontend applications using ethers.js and viem
• Write and maintain contract ABIs and TypeScript interfaces
• Test smart contracts on testnets (BSC Testnet, Polygon Mumbai)
• Deploy and verify contracts on mainnet (BSC, Polygon)

2. Cross-Chain Bridge Development

• Develop and maintain cross-chain bridge functionality
• Implement transaction status tracking and monitoring systems
• Handle bridge transaction failures and recovery mechanisms
• Optimize gas estimation and transaction fees across chains
• Ensure security and validation of cross-chain operations
• Monitor and resolve bridge transaction issues

3. Web3 Wallet Integration

• Integrate multiple wallet providers (MetaMask, WalletConnect, Particle Network, etc.)
• Implement wallet connection and authentication flows
• Handle network switching and multi-chain support
• Develop wallet balance checking and display systems
• Create error handling and user-friendly wallet interaction experiences
• Implement EIP-712 signature verification for secure authentication

4. NFT & Badge System Development

• Develop NFT badge collection and display features
• Implement badge metadata caching and optimization
• Create badge rarity filtering and sorting systems
• Build badge transfer and bridge functionality
• Integrate with IPFS or other decentralized storage solutions
• Develop badge analytics and collection tracking

5. Blockchain Event Management

• Implement real-time blockchain event listeners
• Monitor contract events (transfers, approvals, bridge completions)
• Update UI based on on-chain events
• Handle event filtering and processing
• Store and manage event data efficiently

6. Security & Best Practices

• Implement contract address verification and validation
• Add transaction slippage protection
• Ensure secure wallet signature verification
• Conduct security audits of smart contract interactions
• Implement transaction validation and error handling
• Follow Web3 security best practices

7. Performance Optimization

• Optimize RPC calls and contract interactions
• Implement contract call batching and multicall functionality
• Develop RPC endpoint load balancing
• Reduce gas costs through optimization techniques
• Improve transaction speed and user experience
• Implement caching strategies for blockchain data

8. Testing & Quality Assurance

• Write comprehensive tests for smart contract interactions
• Test cross-chain functionality on multiple networks
• Perform integration testing with frontend components
• Mock blockchain responses for development environments
• Conduct end-to-end testing of Web3 features
• Document test cases and results

9. Documentation & Collaboration

• Document smart contract interfaces and ABIs
• Create technical documentation for blockchain integrations
• Collaborate with full-stack developers on API design
• Participate in code reviews and technical discussions
• Provide technical guidance to team members
• Maintain architecture diagrams and integration guides

10. Monitoring & Analytics

• Implement transaction success rate tracking
• Monitor Web3 performance metrics
• Track gas usage and optimization opportunities
• Create dashboards for blockchain analytics
• Log and analyze contract interaction patterns
• Generate reports on platform blockchain usage

Required Qualifications

Technical Skills

• Blockchain Fundamentals:
• Deep understanding of Ethereum, EVM-compatible chains (BSC, Polygon)
• Knowledge of smart contract development (Solidity)
• Understanding of Web3 protocols and standards (ERC-20, ERC-721, ERC-1155)
• Experience with blockchain explorers and transaction analysis
• Web3 Development:
• Proficient in ethers.js, viem, or web3.js
• Experience with wagmi and React hooks for Web3
• Knowledge of wallet integration (MetaMask, WalletConnect)
• Understanding of EIP-712 and message signing
• Experience with multi-chain development
• Frontend Integration:
• Strong React and TypeScript skills
• Experience integrating Web3 features into React applications
• Knowledge of state management (Recoil, React Query)
• Understanding of Next.js framework
• Ability to create responsive and user-friendly Web3 interfaces
• Backend Integration:
• Node.js and Express.js experience
• Understanding of RESTful API design
• Knowledge of database integration (MongoDB, PostgreSQL)
• Experience with authentication and authorization systems
• Ability to create backend services for blockchain operations
• Development Tools:
• Version control (Git)
• Testing frameworks (Jest, Hardhat)
• Development environments (Hardhat, Truffle)
• API testing tools
• Debugging and monitoring tools

Experience

• Minimum 2-3 years of experience in blockchain/Web3 development
• Proven track record of deploying smart contracts to mainnet
• Experience with cross-chain development and bridges
• Previous work on NFT or gaming platforms (preferred)
• Experience collaborating with full-stack development teams

Soft Skills

• Strong problem-solving and analytical skills
• Excellent communication and collaboration abilities
• Ability to work in a fast-paced, agile environment
• Attention to detail and security-conscious mindset
• Proactive and self-motivated
• Ability to explain complex blockchain concepts to non-technical team members

Preferred Qualifications

• Experience with gaming platforms or GameFi projects
• Knowledge of Layer 2 solutions and scaling technologies
• Experience with IPFS and decentralized storage
• Understanding of DeFi protocols and integrations
• Familiarity with GraphQL and The Graph protocol
• Experience with smart contract auditing
• Knowledge of zero-knowledge proofs and privacy technologies
• Previous experience with Particle Network or Arcana Auth
• Contributions to open-source blockchain projects
• Certifications in blockchain development (Consensys, Chainlink, etc.)

Technical Stack (Current Project)

Frontend

• Framework: Next.js 13+ (React 18)
• Language: TypeScript
• Web3 Libraries: wagmi, viem, ethers.js
• State Management: Recoil, React Query (@tanstack/react-query)
• Styling: Tailwind CSS
• Wallet Integration: Particle Network, WalletConnect

Backend

• Runtime: Node.js
• Framework: Express.js
• Database: MongoDB (Mongoose)
• Authentication: JWT, SIWE (Sign-In with Ethereum)

Blockchain

• Networks: BSC (Mainnet/Testnet), Polygon
• Smart Contracts: BABT (Badge), Bridge, Collab contracts
• Standards: ERC-721, ERC-1155
• Tools: Hardhat, ethers.js, viem

Project Context

This role is part of an ongoing Web3 gaming platform project that includes:

• NFT badge collection and management system
• Cross-chain bridge functionality (BSC Polygon)
• Gaming prediction and ranking systems
• Collaboration and reward mechanisms
• User dashboard with blockchain analytics
• Wallet integration and authentication

The platform is built with a modern tech stack and follows best practices for Web3 development. The successful candidate will work alongside full-stack developers to integrate blockchain features seamlessly into the existing platform.

Work Environment

• Collaboration: Work closely with full-stack developers, designers, and product managers
• Communication: Regular team meetings, code reviews, and technical discussions
• Development Process: Agile methodology with sprints and regular deployments
• Tools: Git for version control, project management tools, communication platforms
• Testing: Emphasis on testing and quality assurance
• Documentation: Maintain comprehensive technical documentation

Duration & Future Opportunities

• Initial Project: 6-7 months
• Extension: Potential for extension based on project needs
• Future Projects: Opportunity to work on similar Web3 projects after completion
• Growth: Possibility for long-term collaboration and career growth

Application Process

1. Initial Review: Submit resume and portfolio
2. Technical Assessment: Complete a technical evaluation (if applicable)
3. Technical Meeting: Detailed discussion about the project and technical requirements
4. Interview: Meet with the team and discuss collaboration
5. Onboarding: Get familiar with the codebase and project structure

How to Apply

Please submit the following:

• Updated resume/CV
• Portfolio or GitHub profile showcasing Web3 projects
• Examples of smart contract integrations
• Brief cover letter explaining your interest and relevant experience

Notes for Approval

The position requires a developer who can seamlessly integrate blockchain features into an existing full-stack application while maintaining code quality, security, and user experience standards.