Aug 2025 — Present CURRENT
Lead Developer
PNG Mining And Petroleum Hospitality Services Limited
Full-time · Papua New Guinea
Leading the development of the company's internal applications.
❯ whoami
DEVELOPER / BUILDER / CURIOUS BIRD
William
Corotan.
Average Java Joe who loves to build stuffs
I build applications that make everyday work simpler. From thoughtful interfaces to the systems behind them, I enjoy building simple tools and widgets that make everyday tasks a little easier.
Beyond the editor: music,
TFT, and a better dev setup.
01 / Experience
Jan 2025 — Jul 2025
Full Stack Developer
Maytronics
Maintained company websites and internal applications. Led the migration of deprecated company websites.
Apr 2023 — Dec 2024
Junior Full Stack Developer
Lhoopa Inc.
Maintained and enhanced in-house systems and mobile applications.
02 / Selected projects
A few things I’ve been building and tinkering with.
FrameKit
A metadata-driven TypeScript framework with generated APIs, permissions, workflows, and a React admin UI.
Developer framework · Work in progressMy-Time
Time tracking with organization management, time-adjustment requests, exports, and CLI clock-in and clock-out.
Web applicationPOS-System
A point-of-sale application with inventory management, restocking, transactions, refunds, and administrative tools.
Business applicationproto-ERP
A modular ERP platform with separate web, API, and worker applications, PostgreSQL persistence, and workflow infrastructure.
Enterprise software · Prototype❯ stack --overview
Languages
JavaScript / TypeScript / PHP / Python / Go (Golang)
Web development
React / Next.js / NestJS / Node.js / Laravel / Astro / Tailwind CSS
Mobile · exploring
React Native / Expo
Data & APIs
PostgreSQL / MySQL / MongoDB / REST APIs
Infrastructure & tooling
Docker / AWS / Git
03 / Get in touch
Good things start with a hello_
Have a project in mind, a question, or something interesting to
share?
Let’s talk.