/ Profile, About
I’m Alexanders. I build
products end to end.
Saya Alexanders. Saya membuat
produk dari awal sampai jadi.
I’m a full-stack and AI engineer based in Jakarta. I work with F&B and beauty brands on identity, websites, native apps, and the systems behind their day-to-day operations. I handle the work from product design through implementation, with attention to how customers and staff will use it.
/01-How I work
I start by understanding the business and the people using the product. That helps me decide which flows need attention, how the data should connect, and which tools fit the work.
I use AI in development and in product features when it serves a clear purpose. I define its task, validate its input and output, and control when it can take actions.
I separate the brand website from the operational apps so each can be maintained and released on its own. Shared data still connects the parts that need to work together.
I keep design tokens, data types, and component behavior consistent across the product. I check the main flows before release and use the same references when making changes.
/02-Principles
Built for daily use
I work through the details of booking, payments, and restaurant operations so customers and staff have a clear path through the product.
You can inspect the work
Each case study shows product screens, my contribution, and implementation details. You can follow the main flow and see how the pieces connect.
AI with a clear task
My AI work includes reading job flyers, supporting CV creation, and connecting messaging to booking tools. Validation and execution controls are part of the implementation.
Different products, consistent care
A brand website, restaurant POS, and native app have different needs. I give each its own interface while keeping the content, design, and behavior consistent within the product.
/03-Stack
React · Astro · Next.js · TanStack Start · React Router · Vite · TypeScript · Tailwind CSS · React Native · Expo · Expo Router
Node · Next.js API · Astro Endpoints · Drizzle ORM · Zod · REST / Webhooks · Web Push
Turso (libSQL) · SQLite · PostgreSQL · S3 · Vercel · Upstash · Sentry · Xendit · C# print agent · Unity / URP · ESC-POS
TypeScript · JavaScript · C# · C++ · SQL · Anthropic API · Context7
/04-Timeline
- 2026Built Valid POS restaurant operations: a React terminal, a C# printing agent, and QR table ordering with cashier-recorded EDC payments. Added native customer and merchant apps, an AI website studio, and a Unity game.
- 2025A busy year, the commerce backend, the WhatsApp customer-service agent, the booking system with one clean customer record, and the restaurant’s own delivery app.
- 2024Brand sites the owners can maintain themselves, and a job board built around verified vacancies. Fast pages, editable content, and practical customer journeys.