Unity Developer

October 9, 2026

Office

Senior

Warsaw, Poland

May rule you out

Office-only work

Description

Moon Active is a global leader in mobile gaming, creating entertainment experiences enjoyed by millions of players worldwide. The company is hiring a Unity Developer to work 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. The role covers end-to-end client-side feature development, architecture design, native plugin integration and performance optimization at scale.

Responsibilities

Manage features from system design and data handling to production deployment
Design architectures and implement end-to-end client-side features, leveraging LLMs from day-to-day development processes up to system architecture
Use data-driven methods to resolve production issues and optimize performance across all devices
Manage the integration of native plugins and third-party services

Requirements

4+ years of professional experience in software development
Experience with Unity on mobile platforms, including scripting APIs, profiling tools, UI and animations
Hands-on experience with Claude Code, Cursor or similar AI coding tools
Experience with object-oriented programming, including design patterns, algorithms and data structures
Strong knowledge of an OOP language such as C# and memory management
Proactive, self-driven approach with strong communication skills
Advantage: experience building agentic and autonomous AI frameworks
Advantage: experience in a high-scale data-driven environment with Firebase, analytics and metrics

Conditions

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

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