Harsh Rawal

Software Engineer

Gurugram, Haryana, India1 yr 2 mos experience

AI EnabledAI ML Practitioner

Key Highlights

Expert in building scalable backend architectures.
Proficient in microservices and real-time systems.
Strong problem-solving skills with a focus on performance.

Stackforce AI infers this person is a Backend Developer specializing in EdTech and Fintech solutions.

Contact

Skills

Core Skills

Backend DevelopmentMicroservicesSecurityAi DevelopmentApi Development

Other Skills

AWS EventBridgeAWS LambdaAWS S3AlgorithmsAmazon S3Apache KafkaBack-End Web DevelopmentC (Programming Language)C++ | Java | PythonClickHouseCompetitive Programming | DSA | React | Python DjangoComputer ScienceData StructuresData Structures and AlgorithmsDatabase Management System (DBMS)

About

I am a Software Engineer currently working on financial service at Delhivery, contributing to distributed and data-intensive backend architectures. Previously at PhysicsWallah, I built real-time platforms, secure microservices, intelligent automation workflows, and event-driven systems. With a strong foundation in problem-solving, I excel at breaking down complex engineering challenges, enhancing system performance, and designing scalable, reliable architectures that operate flawlessly at scale.

Experience

1 yr 2 mos

Total Experience

8 mos

Average Tenure

6 mos

Current Experience

Delhivery

Software Engineer

Dec 2025 – Present · 6 mos · Gurugram, Haryana, India · On-site

Pw (physicswallah)

2 roles

Software Engineer

Apr 2025 – Dec 2025 · 8 mos · Noida, Uttar Pradesh, India · On-site

Built and scaled microservices for PW Books, Mentorship, Search, and Library Revamp using NestJS, Golang, MongoDB, Redis, Kafka, and AWS services like Lambda and S3.
Developed a custom DRM system where HTML/PDF content is runtime-encrypted using multi-key encryption, securely stored in S3 with a CDN layer, and managed via Redis for access control and secure content delivery.
Built a scalable AI-quiz generation pipeline using LLMs, Kafka, Redis, Pub/Sub, and SSE, with a jobId-based async flow that checks cache first, triggers Kafka processing when needed, and streams results in real time. Added fallback logic for Pub/Sub misses, ensuring reliability and significantly reducing P99 latency.
Developed backend features for AI-NCERT, including AI-driven quiz generation from paragraphs, automated book-onboarding scripts, paid digital book support, secure content delivery, streamlined user onboarding, auto-OTP submission, and full automated content ingestion workflows.
Enhanced a session scheduling system using AWS EventBridge and Lambda, enabling real-time notifications for students and mentors via FCM.

NestJSGolangMongoDBRedisKafkaAWS Lambda+3

Software Engineer Intern

Oct 2024 – Mar 2025 · 5 mos · Noida, Uttar Pradesh, India · On-site

Built and maintained scalable REST APIs using NestJS, TypeScript, and MongoDB with complete unit and E2E test coverage.
Implemented Redis pipelining in mentorship APIs, reducing Redis round-trips and improving response time by ~30%.
Automated bulk upload of book content using Python scripts, uploading content to S3, and storing metadata in MongoDB.
Conducted A/B testing using Unleash to enable controlled feature rollouts and performance experimentation.
Led complex API migrations from a monolithic system to distributed microservices, improving scalability, maintainability, and service ownership.

NestJSTypeScriptMongoDBRedisPythonBackend Development+1

Onefinnet (one financial network)

Back End Developer Intern

Jul 2024 – Sep 2024 · 2 mos · Noida, Uttar Pradesh, India · Hybrid

Developed and integrated secure APIs in Golang, leveraging Keycloak for user authentication and authorization, enhancing backend functionality and ensure robust access control mechanisms.
Developed and integrated an AI-powered event description generation feature within a Go-based microservice architecture and optimizing response handling with efficient caching mechanisms using Redis.
Developed and integrated automated email notification features to dynamically personalize and send event-based communications to users, improving user engagement and operational efficiency.

GolangKeycloakRedisBackend Development