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Software Engineer, Devsinc · Aug 2022 to Mar 2023

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About MapleHR

MapleHR was an internal HR platform used by 1,500+ employees.

I built the Flutter mobile app from scratch, working across application architecture, core employee workflows, API integration, testing and delivery.

At a glance

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1,500+ employees · 8+ core modules · ~85% test coverage · Flutter + Ruby on Rails

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• Built the Flutter application from scratch and established the MVVM architecture from day one
• Shipped 8+ HR workflows, including Google OAuth authentication, leave management, expense claims, inventory and onboarding
• Integrated REST APIs against an existing Ruby on Rails backend
• Maintained roughly 85% unit test coverage using Flutter's test framework and Mockito
• Set up CodeMagic CI/CD for automated builds, tests and deployment

The Product

The goal was to give employees a single mobile interface for common HR tasks instead of relying on separate manual or desktop-first processes.

The app covered more than a single workflow. It brought together day-to-day employee actions including Google OAuth authentication, leave management, expense claims, inventory and onboarding into one Flutter application.

That breadth meant the app needed a structure that could keep growing without each new module becoming tightly coupled to the rest of the codebase.

Building the app from scratch

I built the Flutter application from the ground up and established its MVVM architecture from day one.

The separation between views, application state and data access gave each module a predictable structure while still allowing shared pieces such as authentication, navigation and API handling to be reused across the app.