MERN Stack Developer

Infosys; Bengaluru; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Infosys in Bengaluru is seeking an experienced Full-Stack Engineer to lead development across the MERN stack. You will design, build, and maintain scalable web applications, collaborating with product/design/QA to deliver features on time.

The role emphasizes secure API design, data modeling with MongoDB, and AI-enabled enhancements, including integration of AI services while ensuring data privacy. Strong JS/TS skills required.

Qualifications

• 35 years of hands-on experience building web applications using the MERN stack.
• Strong proficiency in JavaScript/TypeScript, React, Node.js, and Express.js.
• Solid experience with MongoDB, including data modeling and performance-aware querying.
• Understanding of authentication/authorization patterns (e.g., JWT, session-based auth) and secure API design.
• Experience working with Git-based version control and collaborative development practices.
• Education: BE, ME, BTECH, MTECH, MCA, MSC, MBA (or equivalent practical experience).

Responsibilities

• Full-Stack Development: Design, develop, and maintain full-stack applications using MongoDB, Express.js, React, and Node.js.
• Build reusable, responsive UI components in React and ensure consistent UX across browsers and devices.
• Develop secure, scalable RESTful APIs in Node.js/Express and integrate them with front-end workflows.
• Model and manage data using MongoDB, including schema design, indexing, and query optimization.
• Quality, Performance Collaboration: Write clean, testable code; participate in code reviews and contribute to shared engineering standards.
• Troubleshoot production issues, optimize application performance, and improve reliability and observability.
• Collaborate with product/design/QA to refine requirements, estimate effort, and deliver features on time.
• Maintain documentation for APIs, components, and key technical decisions to support team alignment.
• AI-Enabled Feature Delivery: Contribute to AI-driven enhancements aligned with product needs.
• Integrate AI services or APIs into existing workflows while ensuring data privacy and responsible usage.

Skills

MERN stack

JavaScript/TypeScript

React

Node.js

Express.js

MongoDB

JWT auth

API design

Git

Education

BE/BTech

ME/MTech

MCA/MSC/MBA

Tools

MongoDB

Git

JWT

Job description

Educational Requirements

Bachelor of Engineering

Service Line

Digital Experience

Responsibilities

• Full-Stack Development: Design, develop, and maintain full-stack applications using MongoDB, Express.js, React, and Node.js.
• Build reusable, responsive UI components in React and ensure consistent UX across browsers and devices.
• Develop secure, scalable RESTful APIs in Node.js/Express and integrate them with front-end workflows.
• Model and manage data using MongoDB, including schema design, indexing, and query optimization.
• Quality, Performance Collaboration: Write clean, testable code; participate in code reviews and contribute to shared engineering standards.
• Troubleshoot production issues, optimize application performance, and improve reliability and observability.
• Collaborate with product/design/QA to refine requirements, estimate effort, and deliver features on time.
• Maintain documentation for APIs, components, and key technical decisions to support team alignment.
• AI-Enabled Feature Delivery: Contribute to AI-driven enhancements (e.g., intelligent recommendations, summarization, or automation) aligned with product needs.
• Integrate AI services or APIs into existing workflows while ensuring data privacy and responsible usage.

Technical and Professional Requirements:

• Minimum Qualifications: 35 years of hands-on experience building web applications using the MERN stack.
• Strong proficiency in JavaScript/TypeScript, React, Node.js, and Express.js.
• Solid experience with MongoDB, including data modeling and performance-aware querying.
• Understanding of authentication/authorization patterns (e.g., JWT, session-based auth) and secure API design.
• Experience working with Git-based version control and collaborative development practices.
• Education: BE, ME, BTECH, MTECH, MCA, MSC, MBA (or equivalent practical experience).

Preferred Skills

• Reactive Programming
• NodeJS
• Full stack
• MERN stack