Senior UI/UX Designer (Systems / Technical Environment)

Overview The Senior UI/UX Designer will support the design and improvement of user interfaces for an existing client product undergoing a product refresh and update, focusing on usability, clarity, and practical implementation within a technical or constrained environment. This is a hands-on, delivery-focused role, producing clear, usable interface designs and interaction models that development teams can implement efficiently within short timeframes. The role is a short-timescale, consultancy, prototype generation and documentation of agreed specifications. It is Outside IR35, and will require initial onsite presence but can be then taken offsite to deliver. Responsibilities Design and improve user interface layouts and workflows Produce wireframes, screen designs, and interface concepts Define user journeys and interaction flows Translate complex system functionality into clear, usable interfaces Apply usability and accessibility best practices Work closely with stakeholders to understand requirements and constraints Deliver design outputs suitable for development implementation Provide practical recommendations to improve usability and clarity Iterate designs based on feedback and technical constraints Qualifications Degree (or equivalent experience) in UX, Human Factors, Design, Computer Science, or related discipline Proven experience in UI/UX design for software, systems, or technical products Experience working with engineering or development teams Ability to deliver design outputs in short, delivery-focused engagements Essential skills UI and interaction design UX design and user journey mapping Wireframing and interface layout design Usability principles and best practice application Strong stakeholder communication Ability to translate technical requirements into intuitive UI designs Practical, delivery-focused design execution Desired skills Accessibility awareness (e.g. WCAG principles) Human factors / ergonomics understanding Experience designing for constrained or technical systems Familiarity with engineering or operational platforms Experience with prototyping tools (e.g. Figma, Adobe XD) Experience Experience designing UI/UX for complex or technical systems Strong experience simplifying complex workflows into usable interfaces Experience working within constrained or legacy environments Experience collaborating with engineering teams to deliver implementable designs Experience in defence, government, or regulated environments (desirable) What do I need before I apply A portfolio demonstrating practical UI/UX delivery (wireframes, flows, layouts) Evidence of working on real products or systems , not just conceptual design Examples showing simplification of complex user workflows Demonstrated ability to produce implementable designs within constraints Experience working with technical stakeholders or development teams