BlueStone

MERN Stack Developer Intern

InternshipHybridCoimbatore, Tamil Nadu6 months33K/mo5 openingsImmediate / Rolling

About this internship

Join BlueStone in Coimbatore as a MERN Stack Developer Intern. This entry-level internship is built for candidates eager to turn classroom knowledge into hands-on experience across the frontend, backend and database of a live product. As a MERN Stack Developer Intern, you will work alongside…

Skills you'll use

MongoDBExpress.jsReactNode.jsReduxREST APIsJavaScriptGit

What you'll do

Build responsive, accessible user interfaces and reusable frontend components
Design and implement REST/GraphQL APIs and server-side business logic
Model data and write efficient queries against SQL/NoSQL databases
Integrate frontend and backend and ship features end to end
Write clean, tested code, fix bugs and act on code-review feedback
Participate in daily stand-ups, sprint planning and demos

Who can apply

Pursuing or recently completed BE/B.Tech/BCA/MCA/M.Tech or equivalent (strong coding fundamentals, any branch)
Foundational knowledge of MongoDB, Express.js, React, Node.js
Understanding of data structures, OOP and basic databases (SQL/NoSQL)
Familiarity with Git and a willingness to learn modern full-stack workflows
Good communication, problem-solving skills and a genuine willingness to learn
Based in or open to relocating to Coimbatore, Tamil Nadu (or open to remote where applicable)

Perks & benefits

Exposure to production engineering practicesInternship CertificateLetter of RecommendationMentorship from senior engineersReal-world full-stack project experiencePre-Placement Offer (PPO) opportunity

Interview & selection process

3 rounds — typical selection flow for this role:

1Online Application Screening — the recruitment team at BlueStone reviews your resume, projects and GitHub/portfolio for fit with a full-stack developer internship in Coimbatore.
2Online Coding / Technical Assessment — a timed test covering programming fundamentals, data structures, problem solving and basic MongoDB/Express.js/React questions.
3Technical Interview — a live discussion of your projects and a hands-on coding/full-stack round (frontend + backend + database concepts) on the MERN stack with Redux state management.
4HR / Managerial Discussion — a conversation about your interests, availability, learning goals and the internship offer with BlueStone.

About BlueStone

BlueStone operates in the e-commerce (jewellery) space and actively invests in early-career engineers, including at its Coimbatore technology team. Its culture is practical and learning-oriented — mentorship, honest code reviews and real project work are part of everyday life, and interns are…

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