Island 01 · Intro
Most teams
aren't slow.
They're sailing without a chart. I find the blocker nobody has named yet, and get it out of the way.
Reinaldo Arifin Slamet — Your Technical Partner
Sail east into the dawn
Island 02 · Projects
What I have built
Five products carried the whole way — a configurable super app, a public platform, a hospital's daily record, and a field sales system that feeds an ERP.
01Simplr AppA Super App with configuration based functionality, deploy your business needs rapidlyFlutterPlay StoreApp Store
02CloudPushA self-hosted push service. One authenticated HTTP request to a Cloudflare Worker becomes a native Android notification within seconds. No third-party service, no accounts, no app server.Jetpack ComposePlay Store
03Aibo TagBuilt and maintained a pet identification platform serving a wide audience, with emphasis on user-friendly design, scalability, and consistent performance.NextJs · appwriteWeb
04Hospital ManagementDeveloped a system to manage Hospital patient schedules, appointments, and supporting data, improving operational efficiency, data accuracy, and workflow reliability for healthcare staff.Laravel · FlutterPlay Store
05Sales Force AutomationA sales order management app that enables efficient order capture and synchronizes reports directly with the company’s ERP.
Island 03 · Voyage
Where I've done it
Two ports, eleven years. Manufacturing and a health startup under the Monas flame, then research and development under the Merlion.
Port of SingaporeOct 2021 → PresentSimplr SolutionsSenior Mobile Engineer (Flutter) — Platform & Hardware R&D
- Built and own RAD, an in-house low-code mobile platform — client teams define UI, validation and workflow as config, and a new screen ships in under two hours with no app release. 10+ enterprise clients from one codebase, shipped publicly on Google Play and the App Store.
- Built the Flutter device-integration layer for Zebra and Honeywell handhelds — barcode scanning and label printing — running across 15 sites and 1,000+ devices for sales-force automation, warehouse management and last-mile delivery.
- Shipped a B2C FMCG marketplace connecting 2,000+ end users directly with principals, live in the Philippines.
- Technical lead for a 5-engineer mobile team; Bloc architecture, unit-tested, released through automated Dart build scripts on a self-hosted server.
Oct 2019 → Oct 2021HalodocAndroid Engineer — B2B Products
- Shipped an offline-first Android app on Google Play delivering training and clinical reference to midwives in remote North Sumatra and East Java, onboarding 50+ clinics.
- Built Halodoc's B2B ordering app linking clinics and midwives to its distributor and principal partners, integrated with the fulfilment backend — shipped pre-pandemic and became a critical medicine supply channel through COVID.
Port of JakartaMay 2015 → Oct 2019Wings GroupFullstack Developer
- Built and maintained native Android apps — Sales Automation, Modern Market, Delivery Tracking, and Warehouse — supporting nationwide field and logistics operations.
- Led the development of automated logistics technology that streamlined warehouse and delivery operations, bringing the end-to-end delivery process down to under one day.
