Nilavan Raj — Full Stack Developer

Full Stack Developer & Systems Engineer

Building backend services and apps that scale.
Currently at Groww, working on Java, Spring & distributed systems.

400k+ Users Reached

5+ Years Exp.

3+ Services Owned

Systems-minded.
Full-stack in practice.

I'm a full-stack developer working across backend services and mobile/web apps — from Spring Boot APIs behind Kafka and Redis, to React and React Native products used by hundreds of thousands of people.

At Groww, I own the Auth and Notification services end-to-end — designing the APIs, running them in Docker as part of a microservices setup, and keeping them fast and reliable in production. Before that, I built mobile features at Cars24 and helped grow a MERN-stack product at Leaguex to 400k+ users.

Where I've
made impact.

Groww Current

📍 Bengaluru, Karnataka 🗓 Nov 2024 → Present

Full Stack Developer

Own the Auth and Notification services end-to-end, from design to production
Build backend services in Java and Spring Boot
Use Kafka for async, event-driven communication between services
Use Redis for caching, sessions, and rate-limiting
Run services in Docker as part of a microservices setup
Design and maintain REST APIs consumed by web and mobile clients

Services I own

Auth Service

Notification Service

Core Services

Kafka Redis Docker Microservices

Cars24

📍 Bengaluru, Karnataka 🗓 Apr 2023 → Oct 2024

Mobile Developer

Built and maintained React Native features for the Cars24 app
Worked across iOS and Android from a shared codebase
Collaborated with backend and design teams to ship new features
Debugged and improved app performance and stability

Leaguex

📍 Bengaluru, Karnataka 🗓 Jun 2021 → Feb 2023

Full Stack Developer (MERN)

Worked with a team of 5 to build an app that reached 400k+ users
Built reusable React components and a Redux state architecture
Built Group Chat (GraphQL + Apollo) and Voice Chat (Agora)
Implemented 60fps animations using Skia canvas
Bridged native Kotlin APIs into React Native
Reduced production bug rate from 10% to under 1%

Things I've
built & shipped.

001

📂

RN File Read & Write (Turbo Module)

A React Native JSI file library that runs 2× faster than conventional methods. Built with Turbo Modules for synchronous, concurrent file writing on Android & iOS.

JSI Turbo Module C++ React Native

View on GitHub →

002

⏱️

Custom Timer Notification

Fully customisable Android timer notification for React Native. Boosts user engagement and ships a foreground service for long-running background tasks. 100+ monthly npm downloads.

Kotlin React Native Android NPM

View on GitHub →

003

🎮

Ball Game (Android & iOS)

Cross-platform 2D React Native game built on Skia canvas at a silky 60fps. Dodge white boxes, collect green ones, with adaptive difficulty that scales per player level.

React Native Skia 60fps Game Dev iOS / Android

View on GitHub →

Academic
background.

Jun 2022 → Present

Full Stack Development

Upgrad — Bengaluru, Karnataka

Aug 2016 → Aug 2021

B.E. Mechanical Engineering

Visvesvaraya Technological University — Bengaluru, Karnataka

Full Stack Developer & Systems Engineer

Systems-minded.
Full-stack in practice.

Where I've
made impact.

Groww Current

Cars24

Leaguex

Things I've
built & shipped.

RN File Read & Write (Turbo Module)

Custom Timer Notification

Ball Game (Android & iOS)

Academic
background.

Full Stack Development

B.E. Mechanical Engineering

Let's
build
together.

Full Stack Developer & Systems Engineer

Systems-minded.Full-stack in practice.

Where I'vemade impact.

Groww Current

Cars24

Leaguex

Things I'vebuilt & shipped.

RN File Read & Write (Turbo Module)

Custom Timer Notification

Ball Game (Android & iOS)

Academicbackground.

Full Stack Development

B.E. Mechanical Engineering

Let's build together.

Systems-minded.
Full-stack in practice.

Where I've
made impact.

Things I've
built & shipped.

Academic
background.

Let's
build
together.