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Sigmoid

MERN Stack Developer Intern

InternshipIn OfficePune, Maharashtra5 months26K/mo3 openingsImmediate / Rolling
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About this internship

Join Sigmoid in Pune as a MERN Stack Developer Intern. This entry-level web development internship is built for candidates early in their journey who are eager to turn HTML, CSS and JavaScript basics into production web experience on real, user-facing products. As a MERN Stack Developer Intern…

Skills you'll use

MongoDBExpressReactNode.jsJavaScriptREST APIs

What you'll do

  • building React front-ends
  • creating Express / Node.js APIs
  • designing MongoDB schemas
  • shipping features end to end
  • Collaborate with the team and document your work
  • Take ownership of assigned web features and act on code-review feedback

Who can apply

  • Pursuing or recently completed a degree in CS / IT / any relevant stream — 2026 freshers & final-year students welcome
  • Foundational knowledge of MongoDB, Express, React (or a strong willingness to learn them)
  • Understanding of HTML, CSS and JavaScript basics; familiarity with Git is a plus
  • Good communication, problem-solving and a genuine eagerness to learn
  • Based in or willing to work from Pune
  • A portfolio, personal website or web project you can show (a plus, not mandatory)

Perks & benefits

Real-world web project experienceHands-on with modern web tools & frameworksPre-Placement Offer (PPO) opportunityFlexible working hoursInternship Certificate

Interview & selection process

3 rounds — typical selection flow for this role:

  1. 1Application screening & resume shortlisting by the talent team
  2. 2Technical interview on web development fundamentals and DSA basics
  3. 3HR discussion — stipend, start date, expectations and offer

About Sigmoid

Sigmoid is a analytics & ai company with a strong, growing engineering presence in Pune — one of India's biggest hubs for early-career tech opportunities. The team believes the best way to grow is by building, which is why web development interns here are given real ownership from the start rather…
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