Unity SDK Developer

We are seeking an experienced Unity Game Developer to build reusable SDK modules and shared runtime systems that can be adopted across multiple products. This role is a strong fit for someone with solid game development experience, strong computer science fundamentals, and a high bar for clean code, software architecture, and long-term maintainability.

You should be comfortable designing systems that are not only correct and high performance, but also easy for other teams to integrate, extend, and maintain over time.

• Design and implement reusable Unity/C# modules, libraries, and runtime systems.
• Build clean APIs and modular architectures that support multiple use cases and teams.
• Write maintainable, high-performance code and contribute to code quality through refactoring, review, and engineering standards.
• Collaborate with stakeholders and development teams to deliver practical, scalable technical solutions.
• Contribute to architecture decisions that improve extensibility, stability, and developer experience.

• 5+ years of hands-on experience building games or software, with solid production experience in Unity/C#.
• Proven ability to design modular architectures and shared runtime systems, with practical application of SOLID principles and clear separation of concerns.
• Strong engineering discipline in naming, refactoring, debugging, and maintaining legacy code without breaking stability or slowing teams down.
• Strong performance mindset for real-time systems, with hands-on experience profiling and optimizing CPU, memory, GC allocations, frame time, AOT/JIT constraints, and gameplay bottlenecks in Unity/mobile environments.
• Experience designing clean APIs and developer-friendly integration flows, with strong attention to developer experience, defensive programming, extensibility, and long-term maintainability.

• Experience with H5/web game development using Phaser, Cocos, or [Three.js](
• Experience building SDKs, shared libraries, or internal platforms used by multiple teams.
• Experience with testing, automation, and CI-friendly development practices.
• Clear communication and strong collaboration across teams.

• Competitive salary upon experience
• 13th month salary
• Annual Performance Bonus/ESOP (Employee Stock Options Plan) for people managers.
• Flexible working time. 
• Personal learning and well-being budget
• Team-building budget
• Lunch and parking allowance
• Various learning activities, including internal training & sharing, international conferences, and e-learning (Udemy, Linkedin Learning...).
• Engaging music events: Music Night, Amasing Night, Music schools…
• Employee Assistance Program to support mental health & well-being. 
• Minimum 12 days of paid annual leave, plus 10 days of paid sick leave.
• 12 days working from home per year.

• By applying to any position at Amanotes, you acknowledge and agree that your personal data will be collected and processed for recruitment-related purposes. Please read the “[ Consent Notice for Personal Data Processing ](” carefully before submitting your application.
• Thank you for your interest in joining Amanotes.

We are Amanotes – a dynamic music game company that’s using cutting-edge technology to transform how people experience music.

Since 2014, we’ve led the global simple music game market with over 3.5 billion downloads across 190+ countries, including chart-topping titles like Magic Tiles 3, Tiles Hop, Dancing Road, and Duet Cats.

As the #1 Music Game Publisher worldwide and the #1 App Publisher from Southeast Asia by downloads, our ambition is clear: to create iconic, hybrid-casual music games that people love and play for years.

What truly sets Amanotes apart is not just what we build — it’s how we grow and who we grow with:

We invest in your growth through learning budgets, coaching, and stretch opportunities.

We embrace a creative and dynamic culture, where everyone can play, share, and thrive.

We believe in work-life harmony — your rhythm matters here.

We recognize and reward impact, with competitive benefits and clear development paths.

Come join our music-filled workplace, where innovation meets rhythm — and let’s create a magical music experience together.

Amanotes – Where Everyone Can Music.

Click the button or contact us at View email address on us.fitly.work.