Service Designer (Interaction/Mobile Focus)

Service Designer (Interaction/Mobile Focus)

Location: London/Remote
Rate: £700 per day (Inside IR35)
Clearance: Must be eligible for BPSS and SC (active SC highly desirable)
Contract Length: 12 months
Start Date: 06 July 2026

Sanderson Government & Defence is supporting a public sector organisation to secure an experienced Service Designer to work on complex, user-centred digital services.

This role will suit a designer with a strong interaction and mobile design background, comfortable working across end-to-end services within multidisciplinary agile teams.

The role

You will be responsible for designing clear, accessible and inclusive service interactions, with a particular focus on mobile-first experiences across iOS and Android. Working closely with service designers, researchers, developers and product teams, you'll help shape user journeys and design decisions from discovery through to live.

Key responsibilities

• Design clear, accessible, user-centred interaction flows across complex end-to-end services
• Create mobile-first experiences across iOS and Android platforms
• Collaborate with service designers, researchers, developers and product teams within agile delivery teams

Mobile prototyping

• Produce high-fidelity interactive mobile prototypes illustrating interactions, gestures, transitions and system behaviours
• Use prototyping tools and lightweight code to simulate complex user flows
• Support usability testing, technical feasibility discussions and collaboration with engineering teams

Accessibility and standards

• Design in line with NHS and GOV.UK Service Standards
• Ensure all outputs meet WCAG 2.2 AA accessibility requirements and inclusive design principles
• Contribute across discovery, Alpha, beta and live phases

Key experience required

• Strong interaction design experience across complex digital services
• Advanced mobile prototyping skills
• Experience designing for both iOS and Android
• Experience working to NHS or GOV.UK service standards
• Strong knowledge of accessibility and inclusive design
• Experience working in agile, multidisciplinary teams

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason , please let us know when you apply or talk to the recruiters directly so we can support you.