SummaryProject Overview

We are upgrading a live Production & Inventory Management System for a Japanese manufacturer. In this phase, the main goal is to migrate existing Windows desktop screens to C# / WPF (MVVM) and implement unit tests for each screen. Detailed specifications and the legacy application are already available. You will join a Japan-Philippines agile team and work from our BGC (Bonifacio Global City) engineering hub.

Engagement Overview

• Contract type: Freelance / project-based

• Work arrangement: Able to work on-site at the Ortigas office 1 day per week

• Tech stack: .NET 8 (C#), WPF (MVVM), ASP.NET Core Web API, SQL Server, GitHub Actions, Docker / Kubernetes (AKS)

• Language: Working English required; ability to read basic Japanese specs is a plus

• Start date: ASAP (target August 2025)

• Reporting line: Philippine Tech Lead and Japan-side Product Owner

1. Analyze legacy specifications and source code, then migrate each screen to WPF (XAML + MVVM)
2. Write unit tests for the migrated screens using NUnit or xUnit
3. Refactor existing business logic into clean C# while preserving functionality
4. Integrate with ASP.NET Core Web API endpoints and ensure data consistency
5. Configure automated test execution in the CI pipeline to maintain quality gates
6. Participate in code reviews, sprint planning, and daily stand-ups (JP/EN hybrid)
7. Produce migration guides, test reports, and other technical documentation

• Practical software development experience with the modern .NET stack

• Deep understanding of WPF / XAML and the MVVM architecture in real projects

• Hands-on experience designing and building unit tests with NUnit, xUnit, or similar frameworks

• Experience developing Web services with ASP.NET Core or an equivalent framework

• Solid knowledge of relational databases (T-SQL, indexing)

• Proficiency with Git, pull-request workflows, and CI/CD tools

• Strong problem-solving skills and proactive communication

• Resident of the Philippines and able to commute to BGC four days per week

Preferred Qualifications

• Familiarity with WPF frameworks such as Prism or CommunityToolkit.MVVM

• Background in manufacturing, warehousing, ERP, or MES domains

• Ability to read Japanese technical documents (JLPT N4 or higher)

• Knowledge of reporting tools (SSRS, Power BI) and barcode / RFID integration

• Experience operating Docker / Kubernetes environments

• Experience implementing offline caching or real-time communication with gRPC / SignalR