Fullstack & Systems Developer · Indonesia 🇮🇩
I build software small businesses actually run on — and dig into the systems underneath.
| Project | What It Does | Stack | Status |
|---|---|---|---|
| KitchenCycle | Production planning, real recipe HPP calculation, and automated inventory tracking for small F&B kitchens. | Next.js · TypeScript · Tailwind | Production |
| Jadiin Rupiah | On-demand door-to-door used cooking oil pickup & cash settlement across Jabodetabek. | Web · Logistics Routing | Production |
| Sijantan | Educational health portal with AI consultation & clinician locator — zero sign-up, zero data tracked. | Fullstack Web · AI | Production |
| Hermes Cost Tracker | Zero-dependency CLI ledger to audit token spend across multiple LLM providers. | Python · 0 deps | CLI Tool |
| Hermes Skill Audit | Security scanner detecting destructive shell commands, prompt injections, and exfiltration in agent skills. | Python · 0 deps | Security Tool |
| Merkle Tree Visualizer | Interactive Merkle tree with SHA-256 written from scratch (~70 lines, byte-verified against Node crypto). | Vanilla TS · WebCrypto | Open Tool |
| ProofOfHabit | Stake MON on daily commitments: missed days burn to the dead address, survivors split the pot. | Solidity · wagmi · Monad | Testnet |
Recent contributions merged to upstream projects:
- koharu-rs/koharu (#1053) — Editor brush preset correction for manga workflow tooling.
- HyunjoJung/rxls (#86) — Rust spreadsheet viewer: input validation rejecting empty date/numeric cells.
- Coding-Moves/diskern (#102) — CLI disk cleaner: fixed English pluralization handling in scan summary outputs.
- lumirlumir/npm-eslint-markdown (#691) — Added
skipMathoption support for git conflict marker linting. - GDGoC-AIU/gdgoc_tree (#31, #32) — Accessibility support (
prefers-reduced-motion) and robust error-fallback UI.
Languages :: TypeScript · JavaScript · Rust · Python · Go · Solidity · SQL
Backend/Edge :: Node.js · Bun · Cloudflare Workers · Next.js · Astro
Data/Storage :: SQLite / LibSQL · PostgreSQL · D1 · Redis
AI / Systems :: LLM Agent Runtimes · Tooling Audit Scanners · Local Systems & CLIs
Get in touch via hello@vhmns.tech