package main

type Engineer struct {
	Name     string
	Role     string
	Building []string
	Stack    []string
	Mantra   string
}

func main() {
	_ = Engineer{
		Name:     "Muhammad Shahadul Haider",
		Role:     "Full-stack engineer · 10+ yrs",
		Building: []string{"xpr-lang", "restless", "envdiff", "ports"},
		Stack:    []string{"Go", "Python", "TypeScript"},
		Mantra:   "problem first, tech second",
	}
}

Full-stack engineer building data systems, multi-tenant platforms, and developer tools across Go, Python, and TypeScript — comfortable end-to-end from Postgres schemas and CI pipelines to React frontends and Bubble Tea TUIs.

• xpr-lang — a sandboxed expression language with near-byte-identical runtimes in TypeScript, Python, and Go. Formal EBNF spec, 601 conformance tests, shipped to npm + PyPI + Go modules. No I/O, no loops, no eval().
• restless — a terminal-native HTTP client (Bubble Tea TUI) driven by plain .http files. Imports from Postman / Insomnia / curl, generates code in 8 languages, and runs # @assert checks as CI smoke tests.
• envdiff — compare, validate, and sync .env files across environments. TOML schema validation, secret masking, and GitHub Actions annotations so missing-secret bugs surface in PRs, not at 2 AM in prod.
• ports — a keyboard-driven TUI for inspecting and killing listening ports on macOS and Linux. The "what's on port 3000?" question, answered in one keystroke.

A few more live on my site.

• Problem first, tech second. The framework you already use will usually do the job.
• Simple beats clever. If it can't be read in a week, it was written wrong.
• Owned end-to-end. The best work happens when one person can carry a feature from schema migration to frontend polish, then watch the deploy in Grafana.

shahadul.com · LinkedIn