Backend Development · Cybersecurity Enthusiast
Ruchir .U. Kalla
// aka shreeji
I build backend systems that handle real load, real data, and real business logic. Currently a backend developer at Flipvex Creative Solutions, and a Forth-year CS student at Shiv Nadar University.
A hardware retail client needed a backend that could handle concurrent reservations without breaking. Architected the full system — reservation logic, Redis caching, rate limiting, and REST APIs. Every layer designed by me.
Built the reservation system for a live production site. The core problem was concurrency — simultaneous bookings causing inconsistent state. Solved it cleanly.
A Kerala logistics company was running operations entirely on paper. Built them a full transport management system — LR vouchers, billing, multi-stop routes, consigner reports, and database backups. Packaged with a .bat installer so non-technical staff could run it without help.
The security team was generating vulnerability reports manually — cross-referencing spreadsheets, entering data by hand. Built a Django dashboard pulling live data from Tenable, made the whole thing real-time, and cut reporting effort by 90%. Also mapped exposed services across 100+ organizational assets using Tenable and Censys.
Shiv Nadar didn't have a platform for hands-on cybersecurity practice, so I built one. Secure flag submission, real-time scoreboard, Reddit-style discussion threads, admin dashboard. 60+ registered users, 30+ active.
The university ERP tells you your attendance percentage but makes it annoying to track daily. Built a Chrome extension that hooks directly into it and does the math for you. 30+ students use it.
Background
Security-aware by default.
Started in cybersecurity — Top 1% on TryHackMe — and moved into backend development without leaving that mindset behind.
Now
Shipping production systems at Flipvex.
Only backend developer. Three client systems built from scratch. Concurrency, caching, API design — handled end to end.
Open to
Freelance work and campus opportunities.
Looking for backend projects where the problem is real and the work is serious. If you need clean architecture, reliable APIs, or someone who thinks about security from line one — get in touch.