Ratul Sarna

Engineer · Problem Solver

I build things end‑to‑end. Apps, backend services, AI systems.

Currently AVP Engineering at Chalo. Over a decade of craft.

What I build

Mobile & Web Apps

Native Android, iOS, Kotlin Multiplatform, Web apps.

Backend Services

Servers, databases, APIs, infrastructure. The invisible work that powers everything.

AI & Automation

LLM integrations, automated pipelines, intelligent assistants.

Full Products

End-to-end from idea to deployed, production-ready systems.

Currently Building

Chalo

Live bus tracking and mobile ticketing for millions of daily commuters across India.

10M+ downloads · #9 Maps & Navigation · 4.1★ rating

I lead mobile engineering — the teams that build and ship the Android and iOS apps.

View on Play Store

Side Projects

Building personal AI automation and tooling. Full-stack — mobile apps, backend services, infrastructure. More soon.

Background

Before tech, I was a 3D animator at Disney — worked on Planes and Planes 2. Taught myself to code and spent 10+ years building Android apps and leading mobile teams.

Let's connect