Identity

Who I Am

Full Stack Developer · AI/ML Engineer · Builder of production systems.
Delhi, India — UTC+5:30.

YS
Yash Srivastava
Full Stack Developer @ RPATech
Delhi, India
Open to opportunities
// Quick Links
Email → LinkedIn → GitHub → LeetCode → Resume ↗ →
// Currently
▸ Building Authnex OAuth
▸ HRMS v2 performance layer
▸ Reading DDIA (Kleppmann)
▸ DSA grind — Trees/Graphs
01
The Summary

I'm a Full Stack Developer at RPATech in Delhi, where I design and ship production-grade SaaS platforms that actually have to work at scale — not just demo well. My day-to-day spans centralized identity systems, enterprise HR automation, AI-powered evaluation engines, and SLA-driven helpdesk infrastructure.

I think in systems, not features. Every platform I've built started with schema design, failure modes, and concurrency constraints — not UI mockups. If I can't explain the failure state of a system, it's not ready to ship.

My backend stack centers on TypeScript/Node.js and PHP (LAMP), with MySQL and Redis as the data layer. On the AI side, I've built multi-model LLM orchestration pipelines in production — real retry logic, fallback routing, latency optimization, and structured output enforcement. Not just wrapping API calls.

Right now I'm actively deepening expertise in distributed systems, message queues, and event-driven architecture — bridging from application engineer to platform engineer. Reading Designing Data-Intensive Applications. Building with intention.

02
Engineering Philosophy
01
Systems First
Design the schema, the failure modes, the concurrency model — before writing a line of application code.
02
Measure, Don't Guess
Every optimization claim I make has a number behind it. 30s → 2s. 25% query reduction. No vague assertions.
03
Boring is Production-Ready
Stable, well-understood tech beats trendy frameworks. Redis + MySQL + battle-tested patterns ship features.
04
No Shortcuts in Auth
Security isn't a feature. Token rotation, blacklisting, RBAC, rate limiting — these are table stakes, not extras.
03
Skills & Stack
// Languages
TypeScript JavaScript PHP Python SQL
// Backend
Node.js REST APIs LAMP Stack OOP / MVC
// Data & Auth
MySQL Redis JWT OAuth 2.0 RBAC
// AI / ML
OpenAI Gemini Claude Mistral STT/TTS OCR
// Infrastructure
Cloudflare Workers / D1 CDN Object Storage
// Frontend
HTML/CSS Vanilla JS Bootstrap jQuery
04
Timeline
Jul 2024 – Present
Full Stack Developer
RPATech · Delhi, India
Designing and shipping production SaaS platforms — Authnex (IAM), HRMS, AI Interview Engine, Helpdesk + SLA system, DocXtractor. Backend-heavy, systems-first engineering.
2020 – 2024
B.Tech Information Technology
GGSIPU · Delhi — GPA: 9.34 / 10
Core CS fundamentals — OS, DBMS, networks, data structures, algorithms. Built multiple full-stack projects during college. Graduated with distinction.
Ongoing
Distributed Systems & Platform Engineering
Self-directed learning
DDIA (Kleppmann), Kafka fundamentals, message queues, event-driven architecture. Goal: bridge from application engineer to platform engineer.