Open to opportunities

Sahiljeet singh kalsi User

@sahiljeetsinghkalsiu

Message

I build scalable cloud-native full-stack platforms and high-performance backend systems.

India

Message

At Newral.in, I own full-stack development for Competishun, an EdTech platform serving 100,000+ active users. I've reduced backend CPU usage from about 99% to 25%, cut video processing from six hours to under 30 minutes, and led a nine-microservice migration from GCP to AWS.

I'm also building Synapse for creators and EdTech businesses, while delivering scalable APIs, real-time backends, and production-ready mobile and desktop applications using TypeScript, NestJS, React, Prisma, PostgreSQL, Redis, and AWS.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer

Current

Newral.in

Jan 2026 - Present (7 months)

Owns full-stack development for Competishun, a large-scale EdTech platform with 100,000+ active users. Reduced backend CPU usage from ~99% to ~25%, cut video processing time from 6 hours to under 30 minutes, and led a 9-service migration from GCP to AWS.

JavaScript TypeScript React NestJS REST APIs Prisma PostgreSQL MongoDB Redis Docker AWS GCP Firebase CI CD GitHub Actions Claude SQL FFMPEG WebSockets BullMQ

Junior Software Developer Intern

Newral.in

Sep 2025 - Dec 2025 (3 months)

Built and maintained microservices using NestJS, TypeScript, PostgreSQL, Redis, and BullMQ. Handled large-scale data operations and resolved production issues across distributed microservices.

NestJS TypeScript PostgreSQL Redis BullMQ Microservices SQL NoSQL Log Analysis

App Developer Intern

Tech Access Learning Pvt Ltd

Jul 2024 - Sep 2024 (2 months)

Built a local MP3 player in Kotlin with playlist management and media controls. Developed a cross-platform movie bookmarking app in React Native with persistent storage.

Kotlin Android Studio React Native Mobile Development Debugging