Unity Developer

Location: Warsaw, Poland (PL)

Experience Level: Mid/Senior

Description

Moon Active is a global leader in mobile gaming, creating entertainment experiences enjoyed by millions of players worldwide. Our games operate at massive scale, processing billions of events daily, and our engineering teams tackle complex technical challenges that push the boundaries of mobile game development.

As a Unity Developer you’ll be working on one of the mobile gaming industry’s most complex and successful products, a large-scale, highly-optimized Unity codebase that serves millions of concurrent users globally. This isn’t your typical mobile game project. It’s a sophisticated, ever-evolving system that demands exceptional architectural thinking, performance optimisation expertise, and the ability to maintain quality at scale.

Responsibilities

• Architect & Build: Design and implement complex features within a large-scale Unity architecture, making decisions that impact millions of users
• Optimize Relentlessly: Drive performance optimization across rendering, memory management, and runtime efficiency for diverse mobile hardware
• Own Quality: Write comprehensive unit tests, maintain high code coverage, and create detailed technical documentation in Confluence
• Collaborate: Work closely with Technical Artists, Game Designers, and cross-functional scrum teams to deliver exceptional player experiences
• Innovate: Leverage cutting-edge AI tools (Cursor, Claude Code, GitHub Copilot, and custom AI automation) to accelerate development and enhance code quality
• Elevate the Platform: Continuously improve core architecture, establish patterns, and mentor team members on best practices

What Makes This Role Unique

• Scale & Complexity: Work on a mature, sophisticated codebase that handles real-world performance challenges at massive scale
• AI-Augmented Development: We heavily leverage modern AI tools (Cursor, Claude Code, Copilot, custom automation) to enhance productivity and code quality
• Technical Excellence: Join a team that values architectural thinking, clean code, and continuous improvement
• Impact: Your work directly affects millions of players and contributes to a product generating significant revenue
• Growth: Learn from experienced engineers, tackle meaningful technical challenges, and shape the future of our platform

Requirements

• 5+ years of professional software development with proven experience building complex, production-grade systems
• 2+ years of Unity development on 2D mobile platforms with deep expertise in Unity’s scripting APIs, rendering pipeline, UI systems, animation framework, and profiling tools
• Expert-level C# with strong understanding of language features, performance characteristics, and modern coding practices
• Solid CS fundamentals: Data structures, algorithms, design patterns, SOLID principles, and architectural decision-making
• Mobile optimization mastery: Deep understanding of memory management, draw call optimization, asset bundling, and platform-specific performance considerations
• Architectural mindset: Proven ability to design scalable, maintainable systems and make sound technical decisions in complex codebases
• Quality-driven: Experience with unit testing frameworks (NUnit, Unity Test Framework) and commitment to code quality
• Strong collaborator: Excellent communication skills and proven ability to work effectively in cross-functional teams
• Fluent in English and Ukrainian, both written and spoken

Advantages

• Experience with dependency injection frameworks (Zenject/VContainer/Extenject)
• Unity Editor tooling development for workflow optimization
• Experience with reactive programming (UniRx) and async/await patterns
• Large-scale system design experience in games or high-traffic applications
• Familiarity with CI/CD pipelines, automated testing, and DevOps practices
• Experience with AI-assisted development tools (Cursor, Claude Code, Copilot) and workflow automation
• Knowledge of addressables, asset management strategies, and build optimization

Benefits

Why join Moon Active? 

• Be part of a leading global mobile gaming company with a unique product enjoyed by millions;
• Thrive in an exceptional, innovative, and dynamic environment;
• Enjoy full transparency and open communication with talented colleagues across teams;
• Take advantage of tremendous opportunities for professional growth and career advancement within a rapidly expanding company;
• Influence and help build personalized product experiences that impact millions of users worldwide.

We offer

• Generous compensation; paid vacation and sick leave;
• Extensive medical and life insurance coverage for you and your family;
• CrossFit & running classes at the office and MultiSport card;  
• Comfortable and modern office located on Królewska 16 street in Warsaw;
• Free daily breakfasts and lunches, and a fully stocked kitchen with snacks and fruits;
• Latest tech equipment, including macOS devices;
• Training & Development/Tuition reimbursement;
• Friend Referral Program with generous bonuses;
• Fun and collaborative workplace culture with regular Friday Happy Hours and team gatherings;
• Relocation bonus for candidates moving to Warsaw;
• Bicycle and Car parking.

We Play to Win! We Play it Smart! We Play as a Team!

We are committed to investing in our employees and fostering a workplace that champions innovation, creativity, and collaboration. At Moon Active, we empower our team members to unleash their potential and achieve remarkable results every day. We encourage bold decision-making and believe that every individual has a significant impact on our success. Join us and level up your career in a supportive and high-achieving environment!

#LI-Hybrid