Middle-Senior QA Engineer

OptiPlay is an independent iGaming studio focused on developing high-quality HTML5 slot games for international markets.
We’re growing our product team and are looking for a Middle–Senior QA Engineer to help us ensure top-tier quality from early development through release and post-launch support.

 What you’ll do

• Test HTML5 slot games across all development stages (desktop & mobile)
• Validate game logic and mechanics: math models, features, bonuses, free spins, RTP, win scenarios
• Perform regression testing before releases and updates
• Conduct cross-browser and cross-device testing
• Test platform and partner integrations (launches, promos, RTP changes, etc.)
• Identify, document, and track bugs with clear reproduction steps
• Collaborate closely with developers, designers, and game mathematicians
• Contribute to improving QA processes, checklists, and quality standards
• Execute and maintain test cases in TestRail

 What we’re looking for

•  5+ years of experience as a QA Engineer (preferably in iGaming / slots/gambling), Solid understanding of HTML5 game development lifecycle
• Hands-on experience testing complex game mechanics and logic
• Experience with TestRail
• Strong attention to detail and a player-oriented mindset
• Experience with bug-tracking tools (Jira or similar)
• Basic understanding of client–server architecture

• English level B2 or higher

   

Nice to have

• Experience working with slot providers or game studios
• Knowledge of game mathematics or RTP validation
• Experience with automation or scripting
• Familiarity with certification or compliance testing

Benefits

— 21 vacation days + 5 extra day-offs annually;
— 12 paid sick days;
— Fully remote format — work from anywhere you feel productive;
— Flexible schedule: start your day anytime between 08:00–12:00 CET;
— Fixed budget for health insurance and gym/fitness;
— We provide 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.