Senior UI/UX Designer (Systems / Technical Environment)

Job Locations
GB-HPH-Portsmouth
Job area
Engineers & Technicians
Employment type
Fixed Term Contract
Travel
Occassional travel
Workplace
Hybrid

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

 

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