Nucleus Software

Node.js Backend Developer Intern

InternshipIn OfficeMumbai, Maharashtra3 months27K/mo1 openingImmediate / Rolling

About this internship

Join Nucleus Software in Mumbai as a Node.js Backend 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 Node.js Backend…

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 Mumbai
A portfolio, personal website or web project you can show (a plus, not mandatory)

Perks & benefits

Flexible working hoursInternship CertificateLetter of RecommendationMentorship from experienced engineersReal-world web project experience

Interview & selection process

4 rounds — typical selection flow for this role:

1Application screening & resume shortlisting by the talent team
2Team-fit / behavioural interview
3Online coding / web-fundamentals assessment (HTML, CSS, JavaScript)
4HR discussion — stipend, start date, expectations and offer

About Nucleus Software

Nucleus Software is a fintech company with a strong, growing engineering presence in Mumbai — 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…

Visit Nucleus Software’s official website ↗

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