MERN Stack Developer

Infosys; Bengaluru; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Infosys is seeking a passionate Full-Stack Engineer to design, develop, and maintain end-to-end web applications using the MERN stack. You will build secure APIs in Node.js/Express, integrate with React front-ends, and model data in MongoDB with attention to indexing and performance.

You will collaborate with product/design/QA to refine requirements, estimate effort, and deliver features on time, while maintaining documentation for APIs and key decisions.

Qualifications

• Hands-on experience building web applications using the MERN stack.
• Solid experience with MongoDB, including data modeling and performance-aware querying.
• Understanding of authentication/authorization patterns and secure API design.

Responsibilities

• Design, develop, and maintain full-stack applications using MongoDB, Express.js, React, and Node.js.
• Develop secure, scalable RESTful APIs in Node.js/Express and integrate with front-end workflows.
• Model and manage data using MongoDB, including schema design, indexing, and query optimization.

Skills

MERN stack

API design

Authentication

Git

Code reviews

Collaboration

AI feature delivery

Education

BE / BTech / ME / MTech / MCA / MSc / MBA or equivalent

Tools

MongoDB

Express.js

React

Node.js

Job description

• 3–5 years of hands-on experience building web applications using the MERN stack.
• 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). Key Responsibilities: Full-Stack Development
• Design, develop, and maintain full-stack applications using MongoDB, Express.js, React, and Node.js.
• 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. About us: Infosys is a global leader in next-generation digital services and consulting. We enable clients in more than 50 countries to navigate their digital transformation. With over four decades of experience in managing the systems and workings of global enterprises, we expertly steer our clients through their digital journey. We do it by enabling the enterprise with an AI-powered core that helps prioritize the execution of change. We also empower the business with agile digital at scale to deliver unprecedented levels of performance and customer delight. Our always-on learning agenda drives their continuous improvement through building and transferring digital skills, expertise, and ideas from our innovation ecosystem. Infosys provides equal employment opportunities to applicants and employees without regard to race, color, sex, gender identity; sexual orientation, religious practices and observances; national origin; pregnancy, childbirth, or related medical conditions; status as a protected veteran or spouse/family member of a protected veteran; or disability.