Senior Mobile Developer - .net MAUI

United States Digital Space LLC; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

United States Digital Space LLC in Singapore is seeking a senior mobile developer to design, develop, and maintain high-performance cross-platform applications using .NET MAUI. You will mentor junior engineers, review code, and ensure adherence to MVVM, Clean Architecture, and SOLID principles while collaborating with product managers and backend teams to deliver production-grade software.

The role emphasizes performance tuning, robust testing with xUnit/NUnit, and maintaining CI/CD pipelines to

Qualifications

• Must have 8+ years of professional software development experience with C# and the .NET ecosystem.
• 5+ years of hands-on experience with .NET MAUI or Xamarin.Forms (MAUI migration preferred).
• Proficiency with platform-specific APIs on Android and iOS.
• Experience with dependency injection, asynchronous programming, and reactive patterns.
• Familiarity with Git workflows, debugging, profiling, and performance tuning.

Responsibilities

• Design, develop, and maintain cross-platform applications using .NET MAUI.
• Architect solutions following MVVM, Clean Architecture, and SOLID principles.
• Integrate RESTful/GraphQL APIs with robust error handling.
• Implement platform-specific integrations for Android and iOS interop.
• Write comprehensive unit, integration, and UI tests (xUnit, NUnit, Appium).
• Optimize application performance (startup time, memory usage, rendering, battery consumption).
• Conduct code reviews, mentor junior/mid-level engineers, and participate in Agile ceremonies.
• Maintain CI/CD pipelines for automated building, testing, and deployment.

Skills

C#

.NET

NET MAUI

Xamarin.Forms

MVVM

Clean Architecture

SOLID principles

REST APIs

GraphQL APIs

Unit testing

Agile ceremonies

CI/CD

Git workflows

Debugging

Performance optimization

Education

Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field

Tools

xUnit

NUnit

Appium

Git

CI/CD pipelines

Job description

Summary

Design, develop, and maintain high-performance cross-platform mobile applications for Android and iOS using .NET MAUI. Architect scalable solutions, mentor junior developers, and ensure adherence to best practices in software engineering. Collaborate with product managers, UX designers, and backend engineers to deliver production-grade applications.

Requirements

• Design, develop, and maintain cross-platform applications using .NET MAUI.
• Architect solutions following MVVM, Clean Architecture, and SOLID principles.
• Integrate RESTful/GraphQL APIs with robust error handling.
• Implement platform-specific integrations for Android (Java/Kotlin interop) and iOS (Swift/Obj-C interop).
• Write comprehensive unit, integration, and UI tests (xUnit, NUnit, Appium).
• Optimize application performance (startup time, memory usage, rendering, battery consumption).
• Conduct code reviews, mentor junior/mid-level engineers, and participate in Agile ceremonies.
• Maintain CI/CD pipelines for automated building, testing, and deployment.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience).
• 8+ years of professional software development experience with C# and the .NET ecosystem.
• 5+ years of hands‑on experience with .NET MAUI or Xamarin.Forms (MAUI migration expertise preferred).
• Proficiency with platform‑specific APIs on Android and iOS.
• Experience with dependency injection, asynchronous programming, and reactive patterns.
• Familiarity with Git workflows, debugging, profiling, and performance tuning.
• Strong written and verbal communication skills.