Happiest Minds

Full Stack Developer Intern (MERN)

InternshipIn OfficeFaridabad, Haryana4 months18K/mo1 openingImmediate / Rolling

About this internship

Kick-start your engineering career with Happiest Minds in Faridabad as a Full Stack Developer Intern (MERN). If you learn fastest by shipping real features end to end, this internship gives you real code, real reviews and real mentorship from day one. As a Full Stack Developer Intern (MERN), you…

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Skills you'll use

ReactNode.jsExpress.jsMongoDBJavaScriptREST APIsGitHTML/CSS

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 React, Node.js, Express.js, MongoDB
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 Faridabad, Haryana (or open to remote where applicable)

Perks & benefits

Letter of RecommendationMentorship from senior engineersReal-world full-stack project experiencePre-Placement Offer (PPO) opportunityFlexible working hoursStipend

Interview & selection process

4 rounds — typical selection flow for this role:

1Online Application Screening — the recruitment team at Happiest Minds reviews your resume, projects and GitHub/portfolio for fit with a full-stack developer internship in Faridabad.
2Online Coding / Technical Assessment — a timed test covering programming fundamentals, data structures, problem solving and basic React/Node.js/Express.js 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 (MongoDB, Express, React, Node.js).
4Second Technical / System Design Round — deeper full-stack problem solving, API design, database modelling and code walkthrough with a senior engineer.
5HR / Managerial Discussion — a conversation about your interests, availability, learning goals and the internship offer with Happiest Minds.

About Happiest Minds

Happiest Minds operates in the it services space and actively invests in early-career engineers, including at its Faridabad 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 treated as…

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