Full-Time | Berlin, Germany
We are Kolibri Games - a mobile games developer from Berlin. We believe that with the best people, we can make games that players will enjoy for years to come.
Our games have defined the idle genre, and bring enjoyment to hundreds of millions of players all around the world. This is possible due to the talented people who make us who we are. ‘Kolibris’, as we call ourselves, are on a mission to continue making great games and we’re looking for new talent to join our team. We strive to offer you a fair recruitment process and a great candidate experience, as well as a friendly environment to work in, with plenty of opportunities to learn and grow.
UI/UX Designer (f/m/d)
We are looking for a UI/UX Designer to work on our hit game ‘Idle Miner Tycoon’.
You will be part of our IMT Team, contributing to a game with over 220 million downloads. In this role, you will design screens, flows, and prototypes, conduct playtests, and refine user-centric designs. Working in an agile, fast-paced environment, you’ll help identify and develop future features by gaining a deep understanding of our player needs and motivations. By leveraging data, player insights, and F2P expertise, you’ll ensure the game remains intuitive, visually polished, and highly engaging - always keeping the player experience at the heart of every decision.

REQUIRED SKILLS

• Prior experience in the gaming industry
• Experience in interface design and user flows, showcased by your portfolio
• Good understanding of design and perception principles
• Strong visual design skills, capable of creating low and high fidelity mockups
• Proficiency in Photoshop, Illustrator, Figma, or similar design tools
• Skilled in creating wireframes, user flows, prototypes, and conducting user tests
• Excellent communication and experience working in a fast-paced environment
• Actively plays mobile games and keeps up with industry trends
• Player-centric mindset

DESIRABLE SKILLS

• Basic knowledge of game design, human psychology, and behavioral science.
• Experience in organizing and conducting usability tests and player research
• Experience in creating and implementing UI assets and animations in Unity.

• Work closely with product and cross-functional teams to enhance player experiences
• Create concepts, prototypes, user flows, and mockups for existing and new features
• Design and maintain UI Assets, icons, interactive elements, and UI/UX documentation
• Use player feedback, data, and usability testing to refine designs
• Proactively propose and evaluate design improvements with product impact in mind.
• Be an active contributor in improving design team processes
• Conduct surveys and research, translating player insights into design actions
• Organize UI layouts and content hierarchies for usability, consistency, and navigation