Saurabh Grewal
SDE II — Backend Developer | Distributed Systems | High-Scale Architecture
Backend Engineer with 4+ years building high-scale distributed systems. Currently at Physics Wallah, Noida.
Skills
TypeScript, Go, Node.js, Nest.js, Java, Spring Boot, Python, React, Angular, MySQL, PostgreSQL, MongoDB, Redis, Microservices, AWS Lambda, AWS SQS, AWS DynamoDB, AWS RDS, AWS EC2, Kafka, BullMQ, Hibernate/JPA
Experience
Physics Wallah — SDE II Backend (May 2024 – Present)
Scaled EzPay architecture in Nest.js supporting 5M+ monthly fee transactions with 99.9% uptime across 100+ clients. Built complete RBAC and Multi-Tenant system. Integrated Paytm and Juspay payment gateways enabling 500cr+ in loans. Engineered Zoom integrations with Redis, BullMQ and Kafka improving performance by 40% for 50,000+ daily session interactions.
SportsBaazi — SDE II Backend (Jun 2023 – Mar 2024)
Built TypeScript/Node.js backend for Player Stocks scaling on AWS. Engineered real-time matching engine reducing bid matching from 3 minutes to 2 seconds. Developed affiliate panel using SQS, Lambda and DynamoDB.
Finanshels — Full Stack Developer (Nov 2022 – Apr 2023)
Built custom financial dashboard integrating Xero/Codat using Angular, Node.js, Spring Boot, Firebase and MongoDB.
Infosys — System Engineer (Sep 2021 – Nov 2022)
Built web applications using Angular and Spring Boot microservices. Deployed prototypes on AWS EC2 for clients including Morgan Stanley.
Education
Master of Computer Science — Maharishi Dayanand University (2019–2021), CGPA 8.2/10
Bachelor of Science — Pt. N.R.S Govt College (2015–2018)
Achievements
AWS Certified Cloud Practitioner (CLF-C02). Certified in Spring Boot and Node.js.