Node Developer

We are seeking a Node.js Backend Developer with 4-7 years of experience to design, develop, and maintain secure, scalable backend applications and RESTful APIs. The ideal candidate will have strong expertise in Node.js, Express.js, MongoDB, and JavaScript.

Key Responsibilities

• Design, develop, and enhance backend services using Node.js, JavaScript, and Express.js.
  
• Own the design and maintenance of secure, scalable REST APIs and middleware.
  
• Model and manage data using MongoDB and Mongoose (schemas, indexes, queries, transactions).
  
• Implement and maintain authentication/authorization with JWT, secure cookies, sessions, roles, and permissions.
  
• Enforce secure coding practices: validation, error handling, logging, audit trails, and consistent API responses.
  
• Integrate with internal/external systems using Axios/HTTP clients, TLS/SSL, and API gateways (e.g., Azure API Management).
  
• Handle secure file upload/download flows (Busboy, MongoDB GridFS) with proper validation and sanitization.
  
• Write and maintain unit and integration tests using Jest; help improve test coverage and reliability.
  
• Collaborate with DevOps teams on CI/CD pipelines (Jenkins, Git, Artifactory, SonarQube, Fortify, Black Duck).
  
• Incrementally refactor and modernize legacy code while preserving business functionality.
  

Mandatory Technical Skills & Experience:

· Strong hands-on experience with Node.js and modern asynchronous JavaScript (Promises, async/await).

· Deep experience with Express.js (routing, middleware, validation, centralized error handling).

· Proven track record building and consuming RESTful APIs in production environments.

· Practical, hands-on experience with MongoDB and Mongoose.

· Experience implementing JWT-based authentication and role-based access control.

· Good understanding of web security: secure cookies, session management, CSRF, CORS, token lifecycle, and common vulnerabilities (OWASP).

· Experience integrating downstream APIs using Axios or similar HTTP clients.

· Experience with TLS/SSL certificates, timeouts, resilience patterns, and troubleshooting service-to-service communication.

· Experience writing unit tests with Jest, including mocks and async test cases.

· Working knowledge of Git workflows and CI/CD pipelines.