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September 1, 2026

Unity Developer

Senior • On-site

Warsaw, MZ, Poland

As a Unity Developer, you’ll work on a large-scale, highly optimized Unity codebase serving millions of concurrent users globally. The product is a sophisticated, evolving system requiring strong architectural thinking, performance optimization expertise, and the ability to maintain quality 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 through 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 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 and strong communication skills.

Advantages

  • AI engineering experience, including building agentic and autonomous frameworks.
  • Experience in a high-scale, data-driven environment using Firebase, analytics, metrics, or similar tools.

Benefits

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

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