Senior Mobile & Backend Engineer – .NET MAUI / ASP.NET Core

ShareCompany; Amersfoort; On-site; EUR 60,000 - 90,000; Full time

Job summary

Atrea, part of ShareCompany Group, develops data-driven IT solutions for workforce management. You will split time roughly 50/50 between mobile and backend work, taking ownership of features from implementation through testing and release.

You’ll work with .NET MAUI for iOS/Android, ASP.NET Core Web API and SQL Server, shaping architecture, tests and CI/CD with a strong focus on quality and end-to-end ownership.

Qualifications

• Typically 3+ years of professional C# / .NET development.
• Hands-on mobile app experience with .NET MAUI or Xamarin.Forms.
• Strong MVVM and XAML knowledge.
• Experience with ASP.NET Core Web API and EF Core / Dapper.
• Familiarity with Git and CI/CD tooling.
• Fluent English communication.

Responsibilities

• Develop and maintain mobile apps with .NET MAUI for iOS and Android.
• Build and refine ASP.NET Core Web API endpoints and data access.
• Design SQL Server schemas and queries.
• Implement authentication flows and API contracts with backward compatibility.
• Collaborate across mobile and backend teams and participate in code reviews.
• Write unit tests and contribute to release processes.

Skills

C# / .NET

MVVM / XAML

ASP.NET Core

SQL Server

Mobile development

Git

End-to-end ownership

English (Fluent)

Tools

NET MAUI

Xamarin.Forms

SignalR

EF Core

Dapper

Appium

NUnit

Job description

Atrea, part of ShareCompany Group, develops data-driven IT solutions for workforce management. You will split time roughly 50/50 between mobile and backend work, taking ownership of features from implementation through testing and release.

You’ll work with .NET MAUI for iOS/Android, ASP.NET Core Web API and SQL Server, shaping architecture, tests and CI/CD with a strong focus on quality and end-to-end ownership.