# Dibbayajyoti Roy — Personal Portfolio

> Full Stack Software Engineer specializing in TypeScript, Rust, and Linux Infrastructure. Based in Agartala, Tripura, India. Creator of Klinder-OSS, diffcore, and the AHTML (Agentic HTML) proposal.

## Pages

- [Homepage](https://dibbayajyoti.com): Personal landing page with interactive hero section showcasing engineering skills and approach.
- [Work](https://dibbayajyoti.com/work): Full professional profile — experience, projects, technical skills, hackathon wins, and career philosophy.
- [Writing](https://dibbayajyoti.com/writing): Long-form engineering articles on production incidents, AI engineering, and modern web performance.

## About

Dibbayajyoti Roy is a Full Stack Software Engineer currently working at Yupcha Softwares Pvt. Ltd (since July 2025). He builds production-grade SaaS platforms, deploys Node.js and Next.js services to Proxmox-hosted Ubuntu VMs with nginx, systemd, and TLS via Let's Encrypt, and designs REST APIs with PostgreSQL.

He is the creator of Klinder-OSS — an open-source SDK that unifies event tracking, error-based session recording, and automatic email trigger workflows in a single install. He also built diffcore, a fast WebAssembly JSON diff engine on npm written in Rust — returns real JSON Pointer paths, emits RFC 6902 JSON Patch, ships applyPatch / revertPatch, a React useDiff hook, a CLI, and a streaming engine; benchmarked 3.3–4.1× faster than optimized pure-JS diff. He is also developing AHTML (Agentic HTML), a proposed format for making web pages efficiently crawlable by AI agents with reduced token consumption.

He also shipped Learning Copilot, an AWS Bedrock-powered AI learning assistant that placed top 500 in the AI for Bharat hackathon.

B.Tech Computer Science candidate at ICFAI University Tripura (Class of 2026). Eligible for Germany Opportunity Card / EU Blue Card and Netherlands Highly Skilled Migrant programme.

## Technical Skills

- **Languages**: TypeScript, JavaScript (ES2023), Rust, SQL, Python
- **Frontend**: React, Next.js, TanStack Query, Tailwind CSS
- **Backend**: Node.js, Hono, Express, REST APIs, Server-Sent Events, Zod, OAuth, JWT
- **Systems / WASM**: Rust, WebAssembly, workers-rs
- **Infrastructure**: Linux, Proxmox VE, nginx, systemd, Docker, Cloudflare Workers, Cloudflare Queues, AWS (Bedrock, DynamoDB, CloudWatch)
- **Databases**: PostgreSQL (Neon, RLS, partitioning), DynamoDB, MongoDB, Redis
- **AI/ML**: AWS Bedrock (Nova Pro, Nova Lite), multi-model orchestration, streaming inference, agent design

## Projects

- **Klinder-OSS** (2026): Open-source SDK that unifies event tracking, error-based session recording, and automatic email trigger workflows in one install. Typed events with Zod, edge ingestion on Cloudflare Workers + Queues, Neon Postgres with RLS for multi-tenant isolation, Hono API layer. Rust port via workers-rs in progress targeting sub-10ms p95 latency. Live: https://klinder-oss.vercel.app
- **diffcore** (2026, v1.1): Fast WebAssembly JSON diff engine for JavaScript and TypeScript, written in Rust. Returns real JSON Pointer paths (RFC 6901) and decoded values, emits standard RFC 6902 JSON Patch, and ships `applyPatch` / `revertPatch` for state sync, undo/redo, and optimistic UI. Includes a React `useDiff` hook, a CLI, and a streaming engine for multi-GB files. 3.3–4.1× faster than optimized pure-JS diff (360–490 MB/s sustained). Runs on Node, browsers, Bun, Deno, Cloudflare Workers, Vercel Edge, Electron, Tauri. npm: https://www.npmjs.com/package/diffcore — demo: https://rust-wasm-library.vercel.app — repo: https://github.com/DibbayajyotiRoy/rust-wasm-Library
- **AHTML — Agentic HTML** (in progress, 2026): A proposed format / plugin to replace HTML for AI-crawlable web pages. Goals: more efficient token usage, faster agent crawls, and a substrate that lets owners monetize agent-readable data.
- **Learning Copilot** (2026): AWS Bedrock AI learning assistant with Nova Pro / Nova Lite multi-model fallback, structured level-adaptive explanations, auto-generated D2 diagrams, streaming inference. Top 500, AI for Bharat hackathon. Live: https://ai-for-bharat.vercel.app
- **BloodLink** (2024): Blood donor-seeker matching platform. Next.js + PostgreSQL geolocation. ~100 pilot users. https://github.com/DibbayajyotiRoy/BloodLink
- **EMS**: Real-time Employee Management System in Rust and React. https://github.com/DibbayajyotiRoy/Rust-FullStack-App

## Honors & Awards

- Winner — NITA Arjuna 2.0 National Hackathon (2025), 200+ teams
- Winner — Technovate Project Exhibition (2025)
- 1st Runner-Up — NITA–ISRO Space Hackathon (2024)
- Top 500 — AI for Bharat Hackathon (2026)

## FAQ

- **Who is Dibbayajyoti Roy?** Full Stack Software Engineer at Yupcha Softwares Pvt. Ltd, Agartala, India. Creator of Klinder-OSS, diffcore, and the AHTML proposal. Specializes in TypeScript, Rust, React, Next.js, AWS Bedrock.
- **What is Klinder-OSS?** An open-source SDK that unifies event tracking, error-based session recording, and automatic email trigger workflows in one install. Cloudflare Workers + Queues for ingestion, Neon Postgres with RLS for multi-tenancy, TypeScript SDK with Zod validation, Rust port in progress.
- **What is diffcore?** A fast WebAssembly JSON diff engine by Dibbayajyoti Roy, written in Rust and published on npm. Returns real JSON Pointer (RFC 6901) paths and decoded values, emits standard RFC 6902 JSON Patch, ships applyPatch / revertPatch for state sync, undo/redo, and optimistic UI, plus a React useDiff hook, a CLI, and a streaming engine for multi-GB files. Benchmarks 3.3–4.1× faster than optimized pure-JS diff (360–490 MB/s sustained).
- **What is AHTML?** AHTML (Agentic HTML) is a proposed format by Dibbayajyoti Roy aimed at replacing HTML for AI-agent consumption — efficient tokens, faster crawls, and a substrate that allows owners to monetize agent-readable data.
- **Does Dibbayajyoti Roy have AI engineering experience?** Yes — built Learning Copilot using AWS Bedrock (Nova Pro / Nova Lite), multi-model fallback, streaming inference, DynamoDB memory, cost-aware token budgets. Top 500 AI for Bharat hackathon.
- **What hackathons has Dibbayajyoti Roy won?** NITA Arjuna 2.0 National Hackathon (2025, 200+ teams), Technovate Project Exhibition (2025), 1st Runner-Up NITA–ISRO Space Hackathon (2024), Top 500 AI for Bharat (2026).
- **Is Dibbayajyoti Roy eligible to work in Europe?** Yes — Germany Opportunity Card / EU Blue Card and Netherlands HSM.
- **Where does Dibbayajyoti Roy work?** Yupcha Softwares Pvt. Ltd, Full Stack Software Engineer, since July 2025, Agartala, India.
- **How to contact Dibbayajyoti Roy?** Email: dibbayajyoti@gmail.com, LinkedIn: linkedin.com/in/dibbayajyoti-roy/, GitHub: github.com/DibbayajyotiRoy.

## Writing

- **How I Fixed a Redis Polling Bottleneck That Was Timing Out in Production** (2026): A production incident — naive SCAN over a remote Redis timed out at 100s. Batched fetching with client-side filtering yielded ~90% efficiency improvement. https://medium.com/p/afae306668ba
- **Next.js SEO in 2026: A Developer's Practical Guide** (2026): Structured data, llms.txt for AI crawlers, zero-click optimization, and what actually moves the needle for Next.js sites. https://medium.com/@dibbayajyoti/next-js-seo-in-2026-a-developers-practical-guide-63449d44be22

## Contact

- Email: dibbayajyoti@gmail.com
- LinkedIn: https://linkedin.com/in/dibbayajyoti-roy/
- GitHub: https://github.com/DibbayajyotiRoy
- X/Twitter: https://x.com/dibbayajyoti
- Medium: https://medium.com/@dibbayajyoti
- npm: https://www.npmjs.com/~dibbayajyoti

## Extended Info

See [llms-full.txt](https://dibbayajyoti.com/llms-full.txt) for complete professional details including all projects, metrics, and infrastructure experience.