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.
Skills Required
- 4-7 years of backend development experience
- Strong hands-on experience with Node.js and asynchronous JavaScript, including Promises and async/await
- Deep experience with Express.js, including routing, middleware, validation, and centralized error handling
- Production experience building and consuming RESTful APIs
- Practical experience with MongoDB and Mongoose
- Experience implementing JWT authentication and role-based access control
- Understanding of web security, including secure cookies, sessions, CSRF, CORS, token lifecycle, and OWASP vulnerabilities
- Experience integrating downstream APIs using Axios or similar HTTP clients
- Experience with TLS/SSL certificates, timeouts, resilience patterns, and service-to-service troubleshooting
- Experience writing Jest unit tests, including mocks and asynchronous test cases
- Working knowledge of Git workflows and CI/CD pipelines
What We Do
Kumaran Systems is an IT Services Company with imprints in three countries. The past two decades has seen us provide our global clientele with high-end IT services that include migration support, system integration and infrastructure management solutions, providing one-stop-solution to all your IT demands. Our expertise and in-depth knowledge of businesses help us cater to a variety of industries. Our team strives to know your industry better, by observing current trends and the way it works, to tailor-make our solutions to your needs.With over 20 years of customer orientation, over 2000 engagements across Telecom, Education and Banking & Financial services spread across the globe, Kumaran stands as a key advisor to some of the largest Fortune 500 companies in their business driven technology enablement drive. Kumaran System's Customer Orientation is driven by a global delivery business model giving its customers to choose between an Onshore-Offshore mix. The delivery models enable multilevel touch points between the client, partner networks and Kumaran thereby enabling business driven customer sensitivity and agility. ENGAGE, EMERGE AND EXCEL Involving ourselves in a purposeful action, using our abilities to its maximum, helps us feel positive about ourselves. Such positivity gives raise to positive thinking and positive ideas. Ideas evolve into vision and set our aim! Our aspirations engage us with the incentive of sweet success! Every endeavor has its own pitfalls. Perseverance helps us emerge a successful entrepreneur after any deterrent. In our attempt to achieve our aim, we keep upgrading our knowledge and skill, to surface successful! A genius mind does not work to excel, but excels in work! We challenge ourselves with every next step! We change every deterrent to a stepping stone to success. We essentially, engage, emerge and excel
