JavaScript Developer Intern

About this internship

Skills you'll use

What you'll do

• writing modern ES6+ JavaScript
• manipulating the DOM and handling events
• integrating third-party and REST APIs
• debugging and improving browser performance
• 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 JavaScript, ES6+, DOM (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

Interview & selection process

4 rounds — typical selection flow for this role:

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

About Nucleus Software

Searching for “Nucleus Software internships” or “internship at Nucleus Software”? You’re in the right place.