Mid-Level UI/UX Designer (Games)

Location: Hybrid position based in Cardiff, UK, requiring 3 days onsite each week; remote work is available on the remaining days.

Company

Atomic Theory is a multinational game development team of AAA veterans building player-first experiences with strong engineering foundations, performance excellence, and accessibility.

What you will do

• Design, implement, and optimize complex game UI features and systems, including menus, HUD modules, dynamic flows, and procedural elements.
• Develop and maintain UI libraries, reusable components, and critical systems for the feature domain.
• Implement or optimize custom UI shaders, materials, and advanced animations.
• Debug engine, Blueprint, middleware, and other technical UI issues.
• Validate UI functionality and appearance across resolutions, aspect ratios, and gameplay contexts.
• Collaborate with engineers, designers, and producers while maintaining documentation and improving workflows.

Requirements

• 3+ years of experience in UI/UX design for games or interactive products.
• Ability to independently deliver mid-scope UI features, including complex interactions and procedural systems.
• Proficiency with Figma, Photoshop, Illustrator, Unreal, and Unity.
• Strong understanding of layout, anchoring, slicing, optimization, and Blueprint or scripting fundamentals.
• Experience debugging technical and design challenges and developing or optimizing UI systems or libraries.
• Strong UI/UX fundamentals, including usability, readability, accessibility, communication, and solution-oriented collaboration.

Nice to have

• Experience with dynamic HUDs, procedural UI, or live-service UI elements.
• Familiarity with UI middleware or advanced engine pipelines.
• Experience with shader-based UI, advanced materials, or complex animations.
• Exposure to UX metrics, usability testing, or iterative optimization.

Culture & Benefits

• Hybrid working with home and in-person collaboration.
• Private pension, medical, dental, and vision coverage.
• Annual leave, bank holidays, and a winter office closure.
• Annual research credit, professional development opportunities, internal tech talks, and cross-discipline collaboration.
• Flexible work-life balance with no crunch, family-friendly leave, team lunches, snacks, and a team lounge with consoles and games.