**Nature of the tasks** * Analysis of the user interface requirements. * Design of wireframes and mock\-ups (or other visual prototyping) which lead to intuitive user experience and translation of business concepts into system interface. * User interface design specifications. * Finding efficient solutions for problems linked to multi\-device development (e.g. desktop screen vs. smartphone). * Design of user interfaces. Visual prototypes. * User\-centred approach for evaluation of user interfaces (including usability studies on real stakeholders and/or clients). * Elaborate navigation mapping design. **Knowledge and skills** * Good knowledge of user interface ergonomics. * Knowledge of design and graphical tools (Balsamiq/InVision/UXPin/Framer.js or other). * Knowledge of UX design best practices, especially good understanding of responsive design and mobile\-first design. * Ability to work with clients and analysts and to understand business vision on high and low level details. * Very good knowledge of GIT. * Knowledge of web technologies and standards including at least general knowledge of current legislative regulation (Web Content Accessibility Guidelines 2\.0 level AA). * Strong capacity in writing and presenting studies. * Ability to participate in multi\-lingual meetings, excellent communicator. Capability of working in an international/multicultural environment. **Education and experience** * Minimum 8 years of relevant studies and/or experience after the secondary school. * Minimum 8 years of relevant professional experience, e.g. with web interface design or graphical design.