Sourav Chowhan · Engineer · Co-Founder · Problem Solver
Enterprise backend architecture.
Executed with precision.
You're here to
I'm drawn to hard problems in unfamiliar places. Aviation crews, newsrooms, online stores, digital IDs, fintech wallets — every new domain is a new puzzle, and I learn the business before I write the code.
Right now I'm co-building Chawmen and leading engineering at Sabre Stone Research — and always happy to meet people building something new.
I design and build the backend your business runs on — APIs, data pipelines, payments, and integrations that stay fast, secure, and reliable as you grow.
Bring me a new product or a system that's struggling under load. You'll get clean, documented, tested code — delivered on the timeline we agree on, with clear updates along the way.
- Years shipping to production
- 4yrs
- Industries explored
- 8+
- Concurrent users supported
- 8,000+
- API latency reduction
- ~50%
Services
What I can do for youYou focus on your customers. I'll make sure the system behind them never lets you down.
- 01
Backend & API Development
Production-ready REST and gRPC APIs in Java/Spring Boot or Go — with authentication, documentation, and tests built in from day one.
Ideal for → New products, MVPs, and platform rebuilds
- 02
Performance & Scaling
Slow queries, timeouts, and outages traced to the root cause and fixed for good — caching, indexing, and concurrency done right.
Ideal for → Systems struggling as traffic grows
- 03
Integrations & Data Pipelines
Payment flows, third-party APIs, Kafka event streams, and batch jobs that move your data reliably — and recover cleanly when something fails.
Ideal for → E-commerce, fintech, and data-heavy teams
- 04
Architecture & Technical Leadership
System design, code reviews, and a hands-on technical partner for founders who need someone to own the backend end to end.
Ideal for → Startups without a senior backend lead
Domains
08 and countingDifferent domains. Same obsession.
Every industry hides its own hard problems — that's the fun part. I learn how the business actually works, then build the system it needs.
- 01
Aviation
Crew scheduling under certification, duty-time, and aircraft-type constraints.
- 02
News Media
Keeping high-traffic newsrooms fast for 8,000+ concurrent readers.
- 03
E-Commerce
Kafka and Spring Batch pipelines moving millions of catalog records.
- 04
Fintech
Ledger-first wallets and real-time currency rate engines.
- 05
Digital Identity
NFC-backed digital ID cards with secure web fallbacks.
- 06
Data Privacy
Sanitizing PII across million-row datasets, restartably.
- 07
Music Tech
Mood-based recommendations from Spotify, Last.fm, and iTunes.
- 08
Communities
Co-building Chawmen — a home for builders, founders & creators.
Right now
What I'm building- Chawmen Co-Founder & Technology Officer One of four founders building a community for builders, founders & creators. Launching soon.
- Sabre Stone Research Founding Member · Director of Web & Software Engineering Leading engineering at a technology and advisory firm serving businesses worldwide.
- Side projects Always tinkering Ledger-first wallets, virtual-thread news aggregators, PII sanitizers — wherever curiosity leads.
Building something new, or just want to trade ideas? Let's talk.
Featured Work · Proven in production
03-
High-Traffic News Media Platform
Oct 2022 – Nov 2025Engineered low-latency systems stabilizing a news platform under 6,000–8,000 peak concurrent users — eliminating N+1 query bottlenecks and cutting API latency ~50% with a custom Redis caching layer.
- Java
- Spring Boot
- PostgreSQL
- Redis
- Hibernate/JPA
-
E-Commerce Data Processing Platform
Oct 2022 – Nov 2025Engineered event-driven ingestion pipelines — Spring Batch + Kafka — processing millions of vendor catalog records daily, with gRPC for sub-second internal communication and AOP-based CQRS for dynamic read/write routing.
- Java
- Spring Batch
- Apache Kafka
- gRPC
- CQRS
-
Secure NFC Digital ID Platform
Oct 2022 – Nov 2025Architected a full Clean Architecture backend — sole-owned across 2 major releases — for a B2C digital business card system, securing every endpoint with JWT/OAuth2 + RBAC and integrating real-time FCM alerts with automated ERP sync.
- Java
- Spring Security
- Clean Architecture
- Firebase FCM
- OAuth2 / JWT
Here for business?
Hiring for your team, or need something built?
Switch to the business view to see the services I offer, how we'd work together, and what you can expect from day one.
How we'll work together
Simple. Transparent.- 01
15-minute intro call
A free, quick call about your goals, constraints, and timeline. Pick any time that suits you. No obligation.
- 02
Clear proposal
Written scope, milestones, and price before any work starts. No surprises.
- 03
Build in the open
Weekly demos and progress updates, so you see working software early and often.
- 04
Launch & support
Deployment, documentation, and a clean handover — plus support after go-live.
Working across time zones? I schedule calls in your morning or evening and keep work moving asynchronously, so you wake up to progress.
Have a project in mind?
Grab 15 minutes on my calendar — or tell me what you're building and I'll reply within one business day.