Sir Zach
I'm Rizky Zaki Zulkarnaen — a software engineer from Indonesia building government platforms, super apps, and everything in between.
- 39
- Projects shipped
- 2021
- Coding since
- Bandung
- Based in
Hello, I'm Zach.
A developer who started in a high-school computer lab and never really stopped.
My journey into web development began in high school in 2021, marked by victories in provincial and district-level competitions. That success pushed me into the broader world of programming, where I started taking on freelance projects.
Through hands-on work I've sharpened my skills and built a real appetite for crafting digital solutions — the kind that get used, break, get fixed, and keep running.
Today I specialise in building high-quality solutions that delight clients and exceed their expectations at PST.
Software engineering, end to end
Architecture, delivery and code quality for web and mobile systems — mostly public-sector platforms serving real citizens.
Information Systems @ Telkom University
Bandung, Indonesia. Balancing a degree with shipping production software for clients.
AI, geospatial & developer tooling
Anything that turns messy real-world data into something a person can actually act on.
My tech stack
The tools I reach for daily — and the ones I keep sharpening.
There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies.
Recent Project Works
A few of the things I shipped most recently.
SINAR Mobile
The Flutter field companion to SINAR (Sistem Informasi Rupa Bumi). Surveyors record toponyms straight from the field with GPS tracking and live accuracy metrics, work offline against a local store, then reconcile with the server through a sync history—covering mapping, track logging, and the submission-to-approval workflow for geographic names.
LiveEFORT Digital Multisolution
Company profile for EFORT, a geospatial and digital solutions firm serving 50+ government agencies, SOEs, and industry partners since 2005. Built with Next.js as a bilingual (ID/EN) marketing site covering surveying, mapping, geospatial analytics, and digital services, with a services taxonomy, portfolio showcase, and direct consultation funnel.
LiveOgan Lopian Web Portal
The public-facing web portal of Ogan Lopian, the official digital gateway of Purwakarta Regency. Built with Astro for near-instant page loads, it brings tourism, open trips, culinary, local films, events, sports, hotels, UMKM, job vacancies, health facilities, public complaints, and official government services together in a single entry point—served by the Ogan Lopian central API and funneling visitors straight to the Android super app.
LiveOganlopian Super Apps
Purwakarta’s all-in-one Android super app for citizens—a single mobile platform integrating public services such as tourism, jobs, public information, transport, and Prodeskel, powered by the Oganlopian central API.
LiveSINAR (Sistem Informasi Rupa Bumi)
A geospatial information system for recording and managing topographic features (rupa bumi). It catalogs and documents existing landforms and geographic elements with structured data, mapping, and search capabilities.
LiveDashboard Kode Pengiriman
Interactive map application for viewing postal codes across Indonesia with an integrated delivery code generator. Features include nationwide postal code search, interactive maps, automated delivery code generation, and comprehensive location-based postal data.
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