I read a lot of source code. If I use a tool every day, I usually end up in its repo, and sometimes I rewrite a small version of it to see how it's put together.

Most of my work is developer tooling, CLI utilities, scraping/automation infra and systems software.

TUI framework in pure Zig, built on the Elm Architecture (Model-Update-View). Works on Linux and macOS and renders with raw ANSI.

A Git-like version control system in Rust, written without libgit2. Covers blobs, trees, commits, index staging and graph traversal. I built it to learn how Git actually stores things.

A C daemon with no dependencies. It scans your code for TODO, FIXME and HACK, then serves a searchable dashboard on localhost. POSIX sockets, plain JS frontend.

Cache manager for the Zig compiler (.zig-cache and ~/.cache/zig), also pure Zig. Shows how big your caches are and prunes old build artifacts.

• Languages: Rust, Zig, Go, C, C++, Python
• Systems & tooling: POSIX, OS runtimes, LSP, CLI tools, memory and cache management
• Automation & backend: Playwright, headless scrapers, FastAPI, Go HTTP services, local LLMs (Ollama)

• Reading through rustc and cpython
• Implementing lox in C.

I take a few contract projects for teams and startups:

• Custom CLI tools and internal utilities (Rust, Go, Zig)
• Scraping and automation, including sites with bot protection
• Small backend services, background daemons, local AI agent setups
• Profiling slow pipelines, auditing legacy code, rewriting bottlenecks

Email me: soumyajit@zelkyr.dev or ayushkantibala2020@gmail.com