Darent Defoe Lengkong. I build the things I wish existed.
Five projects, one pattern: I run into something that doesn’t work the way I need — and I build the fix. Some are deployed products with real users; some are tested, CI-backed engineering; some are honest works in progress.
What I build with.
Tools I’ve shipped real things with — not a wishlist.
- Laravel
- TypeScript
- React
- Vite
- Capacitor
- Kotlin (Android)
- Alpine.js
- Python
- Playwright
- PostgreSQL
- DuckDB
- dbt
- Airflow
- BigQuery
- Supabase
- Google Cloud
- Gemini API
- Git / GitHub Actions
- pytest
- Docker
- Lua
- Pixel art (Aseprite)
- AI-assisted dev
How I work with people.
Receipts, not adjectives.
- Google Indonesia, 2026
- ~2,000 from 81,000+ applicants
- Top ~2.5%
- Teaching AI in daily life
- Universitas Ciputra, ~1 year
- Bi-monthly group sessions
- Outstanding Mentor award
- EPIC — event games
- DCSC — stand-in MC, 3-mo flagship
- Batik Festival — content & outreach
- Systems thinking
- Structured reflection
- Framework building
What I’ve built.
MonsoonSim Bot
A tested automation tool for a multiplayer business simulation. Layered so the core logic is unit-tested in CI without a browser.
read case study →Focl
An offline Android productivity app — and the bug that taught me to debug by reasoning, not Googling.
read case study →Ridly
A deployed voucher marketplace with an arcade soul. Four-layer parallax cityscape, drawn by me. devonsl.my.id
read case study →UC Connect
A deployed directory connecting campus vendors to buyers via WhatsApp. 36+ verified vendors — real users, not a mockup. ucconnect.my.id
read case study →mipuble
A native EPUB reader I’m building because every existing reader misses something. Honest work in progress, included on purpose.
read case study →Who’s behind this.
“Every project here started the same way: I wanted something to exist, so I started building before I had the full map.”
Information Systems student at Universitas Ciputra Surabaya (GPA 3.86 / 4.00). I learn by building — a productivity app to fix a notification gap, an automation tool to kill repetitive work, deployed web products used by real student vendors.
Comfortable owning a system end to end: designing the architecture, reasoning through failures no tutorial covers, and shipping. Currently exploring a double degree at Fontys University of Applied Sciences.