App Developer (C#, Flutter) – Remote (Germany) (m/f/d)

Synaptikon GmbH; United States; Hybrid; USD 68,000 - 103,000; Full time

Benefits offered by this job

BVG ticket

Urban Sports Club membership

Job summary

NeuroNation is seeking an App Developer (Flutter & C#) to help shape the mobile platform for millions of users. You will build features with Flutter, maintain C# code, and drive a smooth user experience across devices.

You’ll collaborate with product, design and engineering teams, contribute ideas for gameplay logic, and help advance a technology transition that blends performance with accessibility.

Qualifications

• Proven experience in Flutter mobile development.
• Strong knowledge of C# and object-oriented programming.
• Experience developing games with complex logic (state machines, deep rules).
• 3+ years of professional software development experience.
• Degree in Computer Science or related field.
• Located in Germany with remote within Germany or hybrid in Berlin.

Responsibilities

• Build and maintain mobile app features using Flutter and C#.
• Drive our mobile technology transition with Flutter expertise.
• Collaborate with product, design, and engineering teams to deliver seamless solutions.
• Monitor app health and performance to ensure reliability and user satisfaction.
• Contribute ideas and improvements that reach millions of users.

Skills

Flutter mobile development

C# / OO programming

Game development patterns

3+ years of software development

Education

Bachelor's degree in Computer Science or related field

Tools

Xamarin.Android

Unity

Job description

Your mission

As an App Developer (Flutter & C#) at NeuroNation, you will play a central role in our mobile technology transition. You’ll help shape the future of our platform by building new features with Flutter, maintaining existing systems in C#, and contributing to an engaging, smooth user experience for millions of users worldwide. This is a chance to combine technical expertise with purpose-driven work that improves lives.

Key Responsibilities

• Build and maintain mobile app features using Flutter and C#
• Drive our mobile technology transition with your Flutter expertise
• Collaborate with product, design, and engineering teams to deliver seamless solutions
• Monitor app health and performance to ensure reliability and user satisfaction
• Contribute ideas and improvements that reach millions of users

Your profile

Must-have Skills

• Proven experience in Flutter mobile development
• Strong knowledge of C# and object-oriented programming
• Experience developing games with complex logic (e.g., state machines, deep rule sets, dynamic gameplay mechanics)
• 3+ years of professional experience in software development
• Degree in Computer Science or related field
• Located in Germany (remote within Germany or hybrid in Berlin)

Nice-to-Have Skills

• Familiarity with Xamarin.Android or Xamarin.iOS
• Background in Unity or game development
• Experience with quality management systems (e.g., ISO 13485, MDR)

Why us?

• Work on something that truly creates value for people
• Make a significant impact on a platform used by millions worldwide
• Take on meaningful, exciting projects instead of routine corporate or agency work
• Help revolutionize health and education systems through technology and innovation
• Enjoy flexible working hours (core hours: 9:30–16:30 CET)
• Receive a BVG ticket to support sustainable and convenient commuting
• Access an Urban Sports Club membership for your well-being and work-life balance
• Be part of an open, supportive culture that values learning, growth, and collaboration