Senior Software Engineer

ANTAES ASIA PTE. LTD.; Singapore; On-site; SGD 140,000 - 210,000; Full time

Job summary

ANTAES ASIA PTE. LTD. in Singapore is seeking a Senior Software Engineer specialized in .NET MAUI to design, build, and maintain cross-platform mobile applications from a single shared codebase.

You will mentor junior developers, contribute to architectural decisions, and promote engineering best practices while delivering production-grade experiences on Android and iOS. The role requires leadership and deep expertise in .NET MAUI and mobile development.

Qualifications

• 8+ years of professional software development with C#/.NET.
• 5+ years with MAUI or Xamarin.Forms and MAUI migration experience.
• Experience consuming RESTful and GraphQL APIs.
• Strong knowledge of DI, async/await, and reactive patterns.
• Familiarity with Git workflows (GitFlow, trunk-based).
• Strong debugging and performance tuning skills.

Responsibilities

• Design, build, and maintain cross-platform apps for Android and iOS.
• Implement MVVM, Clean Architecture, and SOLID principles.
• Integrate platform-specific APIs and native renderers.
• Collaborate with product and UX teams to deliver polished apps.
• Write tests (unit/integration/UI) with major frameworks.
• Lead code reviews and mentor junior developers.
• Maintain CI/CD pipelines and deployments.

Skills

C#

.NET MAUI

Xamarin.Forms

MVVM

Clean Architecture

RESTful APIs

GraphQL

Unit testing

CI/CD

Android interop

iOS interop

Education

Bachelor’s degree in Computer Science

Master’s degree in Computer Science

Tools

Azure DevOps

GitHub Actions

App Center

SQLite/Realm

Job description

We are seeking a talented and experienced Senior Software Engineer specializing in .NET MAUI to join our cross-platform mobile development team. In this role, you will design, build, and maintain high-performance applications that run seamlessly on Android, iOS, from a single shared codebase. You will work closely with product managers, UX designers, and backend engineers to deliver polished, production-grade experiences to our users.

As a senior member of the team, you will also mentor junior developers, contribute to architectural decisions, and champion engineering best practices across the organization.

Key Responsibilities

• Design, develop, and maintain cross-platform applications using .NET MAUI targeting Android, iOS.
• Architect scalable, maintainable solutions following MVVM, Clean Architecture, and SOLID principles.
• Implement native platform integrations and custom renderers/handlers where platform-specific behaviour is required.
• Proficiency with platform-specific APIs on Android (Java/Kotlin interop) and iOS (Swift/Obj-C interop).
• Collaborate with UX/UI designers to translate wireframes and mockups into responsive, accessible user interfaces.
• Integrate RESTful APIs and backend services with robust error handling.
• Write comprehensive unit tests, integration tests, and UI tests using xUnit, NUnit, or MSTest along with Appium or similar frameworks.
• Optimize application performance including startup time, memory usage, rendering, and battery consumption.
• Conduct code reviews, provide constructive feedback, and mentor junior and mid-level engineers.
• Participate in Agile ceremonies (sprint planning, stand-ups, retrospectives) and contribute to continuous improvement initiatives.
• Stay current with .NET MAUI releases, Xamarin migration paths, and the broader .NET ecosystem.
• Maintain CI/CD pipelines for automated building, testing, and deployment of mobile applications.

Requirements

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical 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 (with demonstrated MAUI migration expertise).
• Proficiency with platform‑specific APIs on Android (Java/Kotlin interop) and iOS (Swift/Obj-C interop).
• Experience consuming and integrating RESTful and/or GraphQL APIs.
• Solid knowledge of dependency injection, asynchronous programming (async/await), and reactive patterns.
• Familiarity with Git‑based workflows, pull request culture, and branch strategies (GitFlow, trunk‑based).
• Strong debugging, profiling, and performance‑tuning skills across multiple target platforms.
• Excellent written and verbal communication skills.

Good to Have

• Knowledge of platform‑specific design systems (Material Design, Apple Human Interface Guidelines, Fluent Design).
• Hands‑on experience with Azure DevOps, GitHub Actions, or App Center for CI/CD.
• Familiarity with SQLite, Realm, or other embedded databases for local data persistence.
• Experience with accessibility standards (WCAG) and building inclusive applications.
• Contributions to open‑source .NET or MAUI community projects.