Backend Developer (.NET MAUI Mobile Developer)

SoftwareSeni; Kota Yogyakarta; On-site; IDR 180,000,000 - 240,000,000; Full time

Job summary

SoftwareSeni is seeking a mid-level .NET mobile developer to design, build, and release mobile applications for Android and iOS using .NET MAUI. You will work closely with the team to implement MVVM, data binding, and RESTful API integration, while ensuring app responsiveness and secure data handling.

Requirement includes 3+ years with .NET/C#, 1–2 years in MAUI/Xamarin.Forms, and willingness to relocate to Yogyakarta for onsite work.

Qualifications

• 3+ years of experience with .NET/C#, including 1–2 years developing mobile apps with .NET MAUI or Xamarin.Forms.
• Strong command of C# and .NET, including legacy .NET Framework experience.
• Proven experience releasing mobile apps for Android and iOS using .NET MAUI.
• Knowledge of MVVM, data binding, dependency injection, and navigation patterns.
• Experience consuming RESTful APIs and handling offline connectivity in mobile apps.

Responsibilities

• Develop SoftwareSeni’s mobile products.
• Collaborate with team to investigate and resolve issues.

Skills

.NET MAUI

Xamarin.Forms

C#

MVVM

RESTful APIs

Entity Framework

SQL Server

Git workflows

OOP/SOLID

Async/await

Push notifications

App Store / Google Play

English communication

Relocation to Yogyakarta

Tools

React Native

Flutter

Job description

Requirements

• 3+ years of experience with .NET / C#, including at least 1–2 years of experience developing mobile applications with .NET MAUI or Xamarin.Forms.
• Strong command of C# and the .NET ecosystem, with working knowledge of .NET Framework for legacy applications.
• Proven experience building and releasing mobile applications for Android and iOS using .NET MAUI.
• Solid understanding of MVVM, data binding, dependency injection, and navigation patterns.
• Experience consuming RESTful APIs and handling offline or intermittent connectivity in mobile applications.
• Experience with ASP.NET Core Web API, Entity Framework, and LINQ.
• Knowledge of SQL Server and database design.
• Familiarity with Git-based workflows and branching conventions.
• Strong understanding of object-oriented design and SOLID principles.
• Good understanding of async/await, threading, and mobile app responsiveness.
• Familiarity with mobile app lifecycle, permissions, push notifications, and local storage.
• Experience with App Store and Google Play Store submission, signing, and release processes.
• Knowledge of secure coding practices, including input validation and secure storage of tokens and credentials.
• Skilled in debugging and profiling mobile performance issues, such as slow startup, memory growth, and UI stuttering.
• Experience with React Native or Flutter will be a plus.
• Experience with React for web front-end development will be a plus.
• Possess strong English communication skills, both written and spoken.
• Willingness to relocate and work onsite in Yogyakarta.

Responsibilities

• Development of SoftwareSeni’s products.
• Work as a team to investigate and resolve issues.

Note: This position requires fluency in English, as most communication will be conducted in English. If you’re confident (or eager to grow) in using English at work, this position could be a great fit.