Engineering backend
systems that ship.
I'm Rabi — a Java and Spring Boot engineer building full-stack products end to end, from backend APIs and microservices to React and Next.js on the client.
- 5+
- Years experience
- 30+
- Projects shipped
- 28+
- Articles published
- 10+
- Happy clients
02 — Latest writing
Recent Writing
Amazon S3 Files: AWS Just Turned Object Storage Into a File System
S3 Files lets you mount S3 buckets via NFS with sub-millisecond latency. Here is how it works, what it costs, and why AWS also killed SSE-C by default.
Claude Mythos and Project Glasswing: Anthropic's Locked-Down AI Model
Anthropic's new Claude Mythos model scores 93.9% on SWE-bench Verified and finds zero-days autonomously. Here is why it is not getting a public release.
Tail-Call Optimization Explained: Why Recursion Doesn't Have to Blow Your Stack
Learn how tail-call optimization lets you recurse without stack overflows. Covers TCO in Elixir, Scala, Clojure, and why Java still doesn't support it.
03 — Selected work
Featured Work
Open source projects and tools built to solve real-world problems.
sanitizer-lib
Enterprise-grade input sanitization framework for Java with seamless Spring Boot and JPA integration. Enforce data integrity with declarative annotations, preventing XSS and other injection attacks at the source.
04 — Freelance
Turn your idea into a
shipping product.
I specialize in building MVP web applications, internal tools, and high-performance products. Working solo means no account manager relay — just direct engineering.
Rapid Development
Get your MVP in front of users in weeks, not months.
Full-Stack Expertise
From database design to responsive frontend UI — end to end.
Direct Communication
You work directly with the engineer — you get faster answers and faster builds.
Let's talk details
Fill this out and I'll get back to you within 24 hours.
05 — Collaborations
Reach developers who build, not just browse.
Looking to showcase your product to an audience of working developers and engineers? I collaborate with brands that offer genuine value to the tech community.
## What I offer
- Sponsored blog posts & tutorials
- Product reviews & integrations
- Newsletter sponsorships
- Tool & SDK integrations
audience: developers, engineers
status: open
email: hello@rabinarayanpatra.com