Job Summary We are looking for an experienced Senior Backend Node.js Developer to join our engineering team. In this role, you will design, develop, and maintain high-performance, scalable backend systems that power our applications. As a senior member of the team, you will lead technical decisions, mentor junior developers, and ensure the delivery of clean, maintainable, and secure code. You will work closely with frontend developers, DevOps engineers, product managers, and other stakeholders to build robust APIs and microservices that handle high traffic and complex business logic. Key Responsibilities Design and implement scalable, maintainable, and secure RESTful APIs and GraphQL services using Node.js. Architect and develop microservices and event-driven systems. Optimize application performance, scalability, and reliability (caching, database indexing, load balancing, etc.). Integrate third-party services and APIs. Design and manage database schemas (SQL and NoSQL) and ensure data integrity. Write comprehensive unit, integration, and E2E tests. Participate in code reviews, architectural discussions, and technical planning. Mentor junior and mid-level developers and promote best practices. Troubleshoot production issues and perform root-cause analysis. Collaborate with DevOps to implement CI/CD pipelines and monitoring solutions. Stay up-to-date with the latest Node.js ecosystem trends and tools.