UI/UX Designer

Please note that this is a hybrid position based in Cardiff, requiring 3 days onsite each week, with the option for remote work on the remaining days. Atomic Theory is a multinational team of seasoned AAA veterans with roots at studios like Blizzard, PUBG, Epic Games, and Unity. We’re passionate about building player-first experiences with strong engineering foundations, performance excellence, and accessibility baked in from day one. With offices in Albany, NY; Austin, TX; Cardiff, UK; and Brighton, UK, we operate globally with one mindset: Get Sh!t Done. ABOUT THE ROLE: As an Mid-Level UI/UX Designer, you are a fully capable, independent contributor who handles complex UI tasks and systems within your domain. You take ownership of mid-scope UI features and solve complex design or technical challenges. You are expected to work autonomously, unblock peers when necessary, and ensure your work is high-quality, stable, and integrated into the project pipeline. At this level, you are not leading the team, but you are a key contributor whose technical and design expertise keeps features moving forward efficiently. WHAT YOU'LL DO: - Design, implement, and optimise complex UI features and systems (menus, HUD modules, dynamic flows, procedural elements). - Develop and maintain UI libraries, reusable components, and critical systems to support your feature domain. - Implement and optimise or have knowledge of custom UI shaders, materials, or advanced animations to achieve specific visual or functional goals. - Debug and solve technical UI issues (engine, blueprint, middleware) to unblock your feature work. - Validate UI functionality and appearance across resolutions, aspect ratios, and gameplay contexts. - Improve personal and small-team workflows to increase efficiency and reliability. - Contribute to UX flows, usability, and interface consistency within your domain. - Maintain documentation for tools, systems, and components to ensure clarity and reproducibility. - Collaborate with engineers, designers, and producers to integrate features smoothly. WHAT WE VALUE: - 3+ years of experience in UI/UX design (games or interactive products). - Proven ability to deliver mid-scope UI features independently, including complex interactions or procedural systems. - Proficiency with design tools (Figma, Photoshop, Illustrator) and engine implementation (Unreal, Unity). - Strong understanding of UI technical fundamentals, including layout, anchoring, slicing, optimisation, and Blueprint/scripting basics. - Ability to debug and resolve complex technical and design challenges within your feature domain. - Experience developing or optimising UI systems or libraries that improve efficiency and consistency. - Clear communication skills, including the ability to flag blockers and propose practical solutions. - Strong grasp of UI/UX fundamentals, usability, readability, and accessibility. - Passion for polished, performant, and intuitive player experiences. WHAT YOU MAY ALSO HAVE: - Experience with dynamic HUDs, procedural UI, or live-service UI elements. - Familiarity with UI middleware or advanced engine pipelines. - Experience building shader-based UI, advanced materials, or complex animations. - Exposure to UX metrics, usability testing, or iterative optimisation. WHAT WE CAN OFFER: Competitive Salary and Benefits Package: Your health and wellbeing is important to us, so we offer a variety of benefits including: - Hybrid Working Arrangement: Our office in Brighton is located centrally. As a member of our team, you’ll have the flexibility to work at home and collaborate with your fellow team members in person. - Private Pension via Salary Sacrifice - Optional Private Medical, Dental, and Vision coverage - Annual Leave, plus Bank Holidays and Winter Break Office Closure - Annual Research Credit: We always encourage personal growth, so we provide all of our team members with an annual credit to further enhance your skills! - Professional Development:…