Vinit Kumar

Principal Engineer building backend systems, developer tools, and open source software.

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I work on high-scale backend platforms and the tooling around them: APIs, databases, automation, and developer experience. I enjoy taking systems from "works in staging" to reliable, observable, and fast in production.

Featured Work

• json2xml
  A JSON-to-XML converter for Python with a native Rust extension that significantly improved performance.

• chatbot
  A compact chatbot experiment built with C and Zig, exploring systems-level implementation choices.

• node-twitter
  A Twitter clone built with Node.js and TypeScript, useful as a full-stack architecture reference project.

What I Focus On

• Backend architecture for products operating at meaningful scale
• Performance work across Python, Rust, Go, and TypeScript
• Developer tools, editors, and workflow automation
• Open source projects that are small, practical, and well-documented

Writing

• How to Land That Job - 2026-03-19
• Why I Forked fff.nvim and Turned It Into a Complete Picker Ecosystem - 2026-03-11
• New Blog After a Hiatus - 2026-02-24
• json2xml v6.0.1: 29x Faster with Native Rust Extension - 2026-01-16
• Building json2xml Across Three Languages in One Day - 2026-01-14

Read more on my blog →

TIL

• [TIL] How Not To Install LazyGit on Ubuntu - 2025-07-29
• [TIL] Git Sparse Checkout for Large Repos - 2024-12-28
• [TIL] CSS Container Queries Are Game Changers - 2024-12-27

Browse all TIL posts →

If you're working on backend scale, performance, or developer tooling, I'd be happy to compare notes.