How OTA updates actually work?
Ever wondered how the bugs in an app gets fixed without users downloading any latest version of the app? This is where OTA comes into picutre. Read more to learn what it is and how it works.
Frontend engineer,
going AI fullstack.
I'm Sharad Roy. I've spent 6 years building products for millions users using React, React Native and TypeScript. Now I'm expanding into AI, backend, systems, and architecture. Infinitely more to learn.
Projects
Things I've brewed end to end.
Writing
Essays and long-form learnings.
Making React Native Pages Feel Fast.. Is Not Enough
A loading spinner makes the wait feel shorter. It does not make the wait shorter. Here are the strategies that actually shrink page load time in React Native, and the one that only hides it.
JWT vs Session Tokens
Two ways to answer the same question - who is making this request? They work differently enough that the choice between them shapes a lot of what you build on top. Here's how each one works, what separates them, and where each one fits.
Experience
Where I've worked, and what it taught me.
Shopee
Senior Software Engineer
- Shipped multiple features across product detail, sharing, notifications, cart, and checkout pages that serve millions of users in Southeast Asia and beyond
- Optimized performance and reliability in checkout flow for millions of daily users
- Worked with dozens of engineers to deliver high-quality features, establishing best practices and code review standards
Newzera Tech Labs
Software Engineer
- Led end-to-end frontend development of the Newzera app (social media app for news), owning both UI/UX and backend APIs
- Refactored the codebase for robustness, achieving high test coverage and reducing regression issues
- Mentored junior engineers and interns, establishing frontend best practices and code review standards
Skills
The tools I reach for.
Let's work together
Say hello. The kettle's always on.
I'm open to fullstack and senior frontend roles, and I love seeing interesting products being built at scale. If you're building something meaningful, let's talk. The fastest way to reach me is a LinkedIn DM (reply within four hours), and my code lives on GitHub.