Backend developer-Nodejs

Join a fast-paced backend engineering team to build secure, scalable systems integrating with blockchain components. You will be responsible for designing APIs, data persistence layers, and authentication services for decentralized applications. **Key Responsibilities:** - Develop backend services and REST APIs using NestJS, TypeScript, and Node.js. - Design scalable, secure, and well-documented API endpoints for integration with frontend and blockchain components. - Work with PostgreSQL for data modeling, performance tuning, and complex queries. - Implement robust authentication and authorization mechanisms using JWT and OAuth. - Ensure best practices for API documentation using Swagger/OpenAPI standards. - Collaborate with cross-functional teams to align backend services with business and technical requirements. - Contribute to system design, architecture decisions, and infrastructure planning. - Write comprehensive unit and integration tests to ensure code reliability and security. - Maintain code quality through reviews, documentation, and CI/CD best practices. **Must-Have Skills:** - Node.js - TypeScript - NestJS - PostgreSQL - API documentation (Swagger/OpenAPI) - Authentication flows (JWT, OAuth) **Nice-to-Have Skills:** - Blockchain-related integrations,