Internship – JavaScript
At Wingify, you’ll work on high-impact JavaScript libraries that power experiences for
millions of users globally
. These libraries form the backbone of VWO’s core features, making performance, scalability, and reliability absolutely critical.
If you love writing
clean vanilla JavaScript
, obsess over
web performance
, and enjoy solving real-world frontend challenges—this role is for you.
What You’ll Work On
- Build and enhance
core JavaScript libraries
used across customer websites
- Write
reusable, modular code
that scales across multiple products
- Develop
high-performance frontend solutions
with a strong focus on speed and efficiency
- Contribute to
user-facing features
that directly impact end users
- Optimize applications for
maximum speed, scalability, and cross-browser compatibility
- Write and maintain
automation tests
to ensure code quality
- Debug complex issues across environments and browsers
Tech Stack
We love modern tooling and best practices:
- Vanilla JavaScript (core focus)
- TypeScript
- Rollup.js
- Cypress
- ESLint
We are deeply focused on Web Performance – check out some of our work here:
https://engineering.wingify.com/posts/performance\-improvements\-in\-vwo\-smart\-code/
What We’re Looking For
- 0–1 year of experience (freshers welcome)
- Strong fundamentals in
JavaScript, HTML, and CSS
- Passion for
vanilla JavaScript and frontend engineering
- Understanding of
modular code design and reusable components
- Strong
debugging and problem-solving skills
- Awareness of
browser differences and compatibility challenges
- Interest in
performance optimization and fast-loading web experiences
- Passion for writing
clean, testable code with automation
- Curiosity to stay updated with the
evolving frontend ecosystem
Bonus Points
- Contributions to
open-source projects
- Familiarity with
frontend tooling and build systems
- Writing or sharing technical learnings (blogs, GitHub, etc.)
Why Join Us
- Work on
real-world problems at scale
- Learn from a team that values
engineering excellence and performance
- Opportunity to contribute to
open source and engineering blogs
- Build products used by
millions globally
Stipend: INR 25,000 Per Month
Duration: Minimum 6 Months
Location: Fully Remote (India)
Immediate Joiners are preferred
Full-Time - Internship Role