Middle Frontend Developer / Pixi.js

OptiPlay is looking for a Middle Frontend Developer with Pixi.js expertise to build and ship slot games end-to-end, shape frontend architecture, and collaborate with cross-functional teams. The role involves developing HTML5 games, improving core frameworks, and ensuring performance across platforms. The company offers a fully remote, flexible work environment with minimal bureaucracy.

• Build and ship slot games end-to-end — from initial prototype to production release;
• Beyond game development, participate in shaping the frontend architecture and development standards across all projects — making technical decisions, reviewing code, and sharing expertise with the team;
• Collaborate with Producers, Artists, and Backend Engineers to ensure seamless integration and optimized performance;
• Contribute to code quality through reviews and shared standards, keeping our codebases scalable, maintainable, and reusable;
• Contribute to the design and implementation of new features, UI components, and in-game effects;
• Improve our core framework, build tools, and asset pipelines;
• Profile performance and debug across platforms (desktop, mobile, WebGL) to keep games running smoothly everywhere;
• Treat knowledge as a team asset — document your work and share what you learn with the team;
• Stay curious about modern frontend technologies and trends in the iGaming ecosystem.

• 3+ years of frontend development experience, including at least 1 year building HTML5 slot games — enough to have shipped multiple titles end-to-end and learned from real production cycles;
• Strong expertise with Pixi.js and modern JavaScript / TypeScript;
• Solid understanding of OOP, asynchronous programming, and rendering performance optimization;
• Strong knowledge of Spine animations and deep understanding of asset management pipelines;
• Experience with or proficiency in Codex and WordCode is required;
• Fluency (B2) in English.

• 21 vacation days + 2 extra day-offs annually
• 12 paid sick days
• Fully remote format — work from anywhere you feel productive
• Flexible schedule: start your day anytime between 08:00–11:00 CET
• Fixed budget for health insurance and gym/fitness
• Provided all required work equipment
• Zero bureaucracy and direct communication with founders and C-level
• Minimal meetings, async-friendly workflow
• Startup energy: fast motion, creativity, and tight-knit communication
• Business trips and team meetups several times per year
• Multiple salary payout options (flexible formats)
• …And many more perks unlocked after we hit break-even