Full Stack Developer - Microservices Architecture

Golden Legand Leasing an...

Key Responsibilities

• Design and develop RESTful and GraphQL APIs for payment processing
• Build scalable microservices architecture for transaction handling
• Implement server-side logic for payment orchestration and routing
• Develop background jobs for transaction monitoring and reconciliation
• Optimize database queries and ensure data consistency

Blockchain Integration

• Integrate and maintain connections with multiple blockchain nodes
• Implement wallet infrastructure for multi-chain support
• Develop smart contract interaction layers
• Handle blockchain transaction lifecycle (creation, signing, broadcasting, confirmation)
• Implement gas optimization strategies and fee estimation

Stablecoin & Payment Processing

• Build infrastructure for stablecoin transactions (USDT, USDC, DAI)
• Develop payment routing logic and settlement mechanisms
• Implement multi-signature wallet support
• Create transaction monitoring and alerting systems
• Handle payment callbacks and webhook integrations

KYC & Compliance Integration

• Integrate third-party KYC/AML service providers
• Develop identity verification workflows
• Implement document upload and verification systems
• Build compliance screening and sanctions checking
• Maintain audit logs and regulatory reporting

Payment Orchestration

• Design payment flow orchestration across multiple providers
• Implement payment retry logic and failure handling
• Develop currency conversion and exchange rate services
• Build invoice generation and management systems
• Create reconciliation and settlement processes

Infrastructure & DevOps

• Set up monitoring, logging, and alerting systems
• Implement CI/CD pipelines for automated deployment
• Manage database migrations and schema changes
• Optimize application performance and resource utilization
• Ensure system security and data encryption

Required Qualifications

Technical Skills : 4+ years of backend development experience

• Strong proficiency in Node.js, Python, or Go
• Experience with blockchain development (Web3.js, Ethers.js)
• Solid understanding of RESTful API design and microservices
• Proficiency with databases (PostgreSQL, MongoDB, Redis)
• Experience with message queues (RabbitMQ, Kafka)
• Knowledge of containerization (Docker, Kubernetes)

Blockchain & Crypto

• Hands-on experience with blockchain node integration (Ethereum, Bitcoin)
• Understanding of wallet architecture and key management
• Knowledge of smart contracts and token standards (ERC-20, ERC-721)
• Familiarity with blockchain explorers and transaction monitoring
• Experience with cryptocurrency exchanges and liquidity providers

Payment Systems

• Understanding of payment processing flows and settlement
• Experience with payment gateway integrations
• Knowledge of financial transactions and double-entry accounting
• Familiarity with PCI-DSS and payment security standards

Additional Skills

• Experience with authentication systems (JWT, OAuth)
• Knowledge of security best practices (encryption, secure key storage)
• Proficiency with Git and version control workflows
• Experience with testing frameworks (Jest, Mocha, Pytest)
• Strong debugging and troubleshooting skills