OOPAL
OOPAL
End-to-end smart-locker pickup system for QSR. Python QT kiosk on industrial PCs, admin dashboard, AWS backend, and Wix-store integration.
Senior Software Developer
James Dulangon.
I ship mobile apps, web apps, Claude Code workflows, kiosk systems, and scalable APIsAcross platforms, with spec-driven, AI-engineered workflows. Currently at a Singapore EdTech with 19 centres and 30,000+ students.
About
I'm a software engineer with five years of experience across mobile, web, desktop, and backend. I take products from first commit to the app stores and production cloud, then stick around for the releases and maintenance that keep them healthy. These days I build in a spec-driven, AI-engineered way, with agentic tooling wired into real CI/CD, so ideas become shipped software fast.
Expertise
What I build
Web Development
Full-stack web apps, from platforms and marketing sites to admin portals, built from first commit to deploy.
- Next.js
- React
- TypeScript
- Tailwind CSS
- Node.js
Mobile Development
Native-quality apps shipped to the App Store and Google Play, taken from zero to launch and maintained after release.
- React Native
- Flutter
- Firebase
- Store delivery
Desktop & Embedded
Kiosk and embedded systems built end to end, from hardware integration up to the cloud backend.
- Hardware integration
- AWS
- Node.js
- Kotlin
AI Agents & Automation
Agentic workflows, chatbots, and automation pipelines, delivered spec-first and wired into real CI/CD.
- Claude Code
- Agent pipelines
- Chatbots & assistants
- Workflow automation
Work
Selected work
Featured · Singapore EdTech · current role
One K-12 learning ecosystem, four products.
Learning management system for a Singapore tuition + EdTech group: two companion apps (student and educator) shipped to both stores within four months, the flagship K-12 revision web platform, and the customer marketing site, plus an internal branch administration portal used by centre staff across all 19 locations, on a bi-weekly release cadence.
- 0K+
- students on the platform
- 0
- centres across Singapore
- 0.0%
- educator-app retention
- 0%
- crash rate post-launch
More projects
EV Charging
EV Charging (Japan)
Charging-station finder and route planner for Japanese EV owners. Real-time geolocation, charging-aware routes, check-in rewards.
Kyocera
KYOCERA Mobile Print
Kyocera's flagship enterprise mobile printing app. Print, scan, copy, and fax over Wi-Fi or Wi-Fi Direct from iOS and Android, with file-transfer encryption.
Contact
Have a build in mind? Let's ship it.
Mobile, web, or full-stack. Happy to talk about engineering roles, freelance, or smaller collaborations.
jamesdulangon@gmail.com