Kunal Roy Choudhury
⚀ Turning caffeine into production-ready code
⚁ Backend systems architect who occasionally touches the frontend (when necessary)
⚂ Building AI tools and debugging why the LLM thinks it's a poet
I love crafting production-grade software that solves real problems.
Gostman
A native, privacy-first API client built with Wails (Go + React). 10x lighter than Postman with native support for REST, GraphQL, and WebSockets. 100% local and private.
Tech Stack
TaskFlow
Async team coordination hub for tracking work handoffs across timezones. Real-time task updates, bulk operations, analytics dashboard, GitHub OAuth & issue sync, and self-hostable with Docker.
Tech Stack
Experiences
CollectEdge
Software Development Engineer
- Scaled event-driven microservices architecture in Rust to 50K+ daily messages via horizontal partitioning across 10+ AWS SQS queues, with backpressure-aware consumers, circuit-breaker controls, and idempotent processing for AI voice bots, async transcription workers, and WhatsApp campaigns.
- Architected an AI-powered call analytics platform in React Native with polyglot persistence (S3 + PostgreSQL) and CQRS read/write separation, delivering async audio pipelines with ML inference for sentiment/disposition extraction and automatic interaction synthesis.
- Built a self-optimizing predictive dialer using weighted fair queueing, 5-tier priority strata, graph-based contact scoring to maximize agent utilization through real-time routing and ML-assisted dial timing.
- Implemented a real-time credit risk engine with 18 parallel rule workers on reactive streams, multi-bureau aggregation and 40% cost optimization via LRU cache plus request batching, achieving sub-100ms risk scoring.
Indian Kanoon
Software Developer
- Built Prism from scratch.
- Teaching AI to be a lawyer so humans don't have to read 5,000 documents manually.
- Scaled the system to handle 5,000+ concurrent users without the server filing a lawsuit against me.
Chargebee
Software Engineer Intern
- Refined large-scale data migration systems and optimized database interactions.
- Moved 2 million records closer to their new home, reducing query time by 45% because nobody likes waiting.
- Built a validation system that stops bad data at the door, saving 500k subscriptions from an identity crisis.
AiDash
Software Engineer Intern
- Designed scalable APIs and data retrieval frameworks.
- Decomposed a massive monolith into microservices because code needs personal space too.
- Optimized SQL pagination so fast it feels like the data was always there.
Proof Of Work
building real tools, solving real problems, and leaving a trail of commits to prove it.
Pull Requests
Merged contributions to open source
Skills
I love working with these technologies to build beautiful and functional applications.