Unity developer

Moon Active is a company driven by the mission to become a global leader in mobile gaming. Founded in 2011, our passion for creativity, cutting-edge technology, and delivering exceptional player experiences has resulted in games enjoyed by millions worldwide.

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 Nice to have: 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 From Yoga & Pilates to CrossFit & running classes - we keep moving. Plus a MultiSport card to top it off 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