About
Marson Arya Bagas Prasetyo
- Full-stack product engineer
- Surabaya, ID
- Available for work
I ship AI systems and local-first apps. Solo from design to Cloudflare domain.
Background
Background
Started coding in high school with plain HTML pages. Now studying CS while shipping web apps and AI tools that real people can open in a browser.
Off the keyboard: mechanical keyboards and coffee. On it: products that stay deployed, not demos that rot in a repo.
Note
Ship the domain. Then argue about the stack.
Focus
- Multi-tenant streaming chat
- Local-first client apps
- Applied LLM engineering
What I build
What I build
Multi-tenant chat backends, local-first client apps, and personal AI infrastructure. UI through backend, then domain.
Stack
Stack: Next.js and TypeScript for product work, Python when experimenting with ML. Prefer constraints that force ship over polish theater.
Pipeline
- BriefConstraints, not moodboards
- TokensBrand objects in CSS + content modules
- ShipRSC shell → Worker → domain
- GuardCSP, rate limits, honest demo frames
Interests
AI & LLM
Multi-tenant chat, streaming Workers
Local-first
Client storage, offline-safe UX
Mechanical keyboards
Custom builds & switches
Numbers
2
Live Workers
4
Chat tenants configured
1
Live AI hosts
1
Monorepo