I am a Software Engineer specializing in high-performance backend architectures, stream-based data pipelines, and scalable full-stack applications.
- ⚡ Distributed Storage & Streaming: Architected decoupled Direct-to-S3 multipart streaming engines with presigned URLs, eliminating server-side memory bottlenecks on multi-gigabyte transfers.
- 🚦 Traffic Throttling & Rate Limiting: Implemented Redis-backed token-bucket algorithms, per-user and per-IP request throttling, and decoupled rate limiters for authentication and OTP generation.
- 🛡️ Granular RBAC & Multi-Tenant Security: Engineered hierarchical access control (Owner, Editor, Viewer), cryptographically signed share tokens, Argon2id hashing, and RFC 6238 TOTP 2FA.
- 💳 Business Logic & Monetization: Developed dynamic storage quota middleware (
loadPlanContext), webhook-driven Razorpay subscriptions with replay-attack defenses, and automated soft-delete retention lifecycles.
Enterprise-grade distributed storage platform engineered for high-concurrency file transfers, zero-memory-leak streaming, and robust multi-tenant permissions.
- Direct-to-S3 Multipart Uploads: Direct chunk transfers via presigned URLs and transform streams with zero RAM overhead on the backend.
- Throttling & Abuse Prevention: Distributed Redis rate limiters enforcing strict sliding-window policies per IP/User tier.
- RBAC & Multi-Tenant Security: Granular Owner/Editor/Viewer permission policies with ancestor-path array authorization.
- Pricing & Dynamic Quotas: Middleware-driven subscription tiers (Free, Pro, Enterprise) integrated with Razorpay webhooks.
- Media Processing Engine: Background libuv worker threads for Sharp WebP thumbnail generation and FFmpeg video transcoding.
🔗 Explore: 🌐 Live Application (yourvaultstorage.com) • Monorepo • Frontend Code • Backend Code
Security research test suite demonstrating real-world token vulnerabilities, replay exploits, and cryptographic mitigations.
- Exploit Simulation: Simulates algorithm confusion (RS256 vs HS256), signature stripping attacks, and token replay vulnerabilities.
- Defensive Cryptography: Implements secure HTTP-only cookies, token rotation schemes, and distributed revocation via Redis blacklists.
🔗 Explore: View Security Research Lab
Real-time developer typing benchmark engine featuring syntax-aware programming challenges and precise metrics.
- Event-Loop Timing: Millisecond-accurate WPM, accuracy rate, and penalty calculations using high-precision timers.
- Zero-Jank Rendering: Engineered with React 19 and Tailwind CSS v4 for smooth 60+ FPS interaction.
🔗 Explore: View CodeRacer Repository
Lightweight Node.js AI streaming service built with zero external web framework overhead.
- Stream Piping: Server-Sent Events (SSE) token streaming via raw Node.js HTTP server.
- Stream Handling: Asynchronous chunk iterators, abort signal handling, and context buffering.
🔗 Explore: View FakeGPT Repository
"I built two interactive web projects to impress my girlfriend—and it worked! She was blushing, giggling, and amazed all throughout the day."
- 💖 Valentine's Day Journey (🌐 Live Experience) — Interactive storytelling experience featuring glowing path animations, glassmorphism UI, and audio synchronization.
- ✨ Our Love Story (🌐 Live Experience) — Personal interactive memory timeline built with smooth CSS keyframes and DOM animations.
💼 Open to Full-Time Software Engineering & Backend Systems Roles
📫 Reach me at: adarshbambahadur@gmail.com • LinkedIn

