Kahoot! Group is seeking a Senior Frontend Developer to join their Actimo development team, focusing on building an employee app that combines communication, training, and leadership tools. The role is based in either Spain or Poland, offering the opportunity to work on a platform used by over 200 leading brands across 80+ countries. As part of a cross-functional product team of 4-5 developers, you'll be responsible for implementing visual elements, bridging frontend and backend, and contributing to the platform's evolution. The position requires strong expertise in frontend technologies, particularly JavaScript/TypeScript and modern frameworks. Kahoot! Group, with its mission to make learning awesome, serves hundreds of millions of users globally and maintains a positive culture of collaborative learning and innovation. The company offers a competitive package including medical insurance, flexible working, and a modern office environment. This role presents an excellent opportunity for experienced developers to shape the future of corporate learning while working in a diverse, international environment with over 50 nationalities.