Sigmoid

Node.js Backend Developer Intern

InternshipHybridChennai, Tamil Nadu4 months22K/mo2 openingsImmediate / Rolling

About this internship

Sigmoid has an open Node.js Backend Developer Intern position in Chennai for motivated freshers and final-year students. You will join a supportive engineering team, take ownership of meaningful web features, and grow the practical skills employers actually look for. As a Node.js Backend Developer…

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Skills you'll use

Node.jsExpressMongoDBREST APIsJavaScriptGit

What you'll do

building REST APIs with Node.js / Express
writing and optimising database queries
handling authentication and validation
testing and debugging backend services
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 Node.js, Express, MongoDB (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 Chennai
A portfolio, personal website or web project you can show (a plus, not mandatory)

Perks & benefits

Hands-on with modern web tools & frameworksPre-Placement Offer (PPO) opportunityFlexible working hoursInternship CertificateLetter of Recommendation

Interview & selection process

2 rounds — typical selection flow for this role:

1Application screening & resume shortlisting by the talent team
2Technical interview on web development fundamentals and DSA basics

About Sigmoid

Sigmoid operates in the analytics & ai space and actively invests in early-career engineering talent across Chennai. Its culture is practical and learning-oriented: mentorship, code reviews and real project work are part of everyday life, and interns are treated as genuine members of the…

Visit Sigmoid’s official website ↗

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