Senior Interaction Designer

October 16, 2026

Senior

London, United Kingdom

Description

A senior hands-on interaction design role creating simple, accessible and intuitive digital services within a UK Government environment. The designer joins a multidisciplinary User-Centred Design team, translating complex user, policy and technical requirements into interaction patterns, user journeys and tested prototypes. Work follows GDS standards and the GOV.UK Design System across Discovery, Alpha, Beta and Live phases, with research and evidence driving design decisions.

Responsibilities

Design clear, accessible and intuitive interactions for complex government digital services
Work across the UCD lifecycle from Discovery and Alpha through Beta and Live
Turn user needs and research insights into user journeys, interaction designs and prototypes
Create and iterate prototypes to test concepts and interactions with users
Make effective use of established GOV.UK patterns and components
Work closely with User Researchers to translate findings into design improvements
Collaborate with Content Designers to ensure interactions and content work as a coherent experience
Work alongside Service Designers to fit individual interactions into wider end-to-end services
Collaborate with developers to ensure designs are technically achievable and maintain design quality through delivery
Design inclusively for users with accessibility needs, low digital confidence and different levels of technology access
Use research, analytics and other evidence to explain and defend design decisions
Participate in design critiques, workshops, show-and-tells and wider UCD activities
Contribute to preparation for GDS service assessments and document interaction design evidence clearly
Support and mentor less experienced designers and contribute to the wider UCD community

Requirements

Significant experience working as an Interaction Designer, UX Designer or closely related UCD practitioner
Strong experience delivering digital services within UK Government or the wider public sector
Demonstrable experience working within GDS environments and applying the GDS Service Standard
Practical experience using the GOV.UK Design System and established GOV.UK patterns
Experience working within multidisciplinary UCD and agile delivery teams
Strong understanding of user-centred design and evidence-based design practices
Experience translating user research into interaction design decisions
Strong prototyping skills with the ability to create and iterate prototypes throughout the design process
Experience designing accessible and inclusive digital services
Good understanding of WCAG accessibility requirements
Experience communicating design decisions and rationale clearly to stakeholders and delivery teams
Ability to work with complexity and ambiguity shaped by policy, legislation, technology and operational constraints
A portfolio or case studies demonstrating interaction design work on complex digital services
Designing transactional or citizen-facing government services
Working with the GOV.UK Design System
Applying GDS design principles and the Service Standard
Working across Discovery, Alpha, Beta and Live service phases
Designing and testing prototypes with real users
Designing services to meet accessibility requirements
Working collaboratively within multidisciplinary UCD teams
Contributing design evidence towards GDS service assessments
Understanding when to use an existing GOV.UK pattern versus a new or adapted approach
GOV.UK Prototype Kit
HTML and CSS prototyping
Figma
Miro or similar collaborative tools
Accessibility and inclusive design
WCAG 2.2
User journeys and task flows
Rapid prototyping
Usability testing
Agile delivery
Design critiques and collaborative workshops
Experience working within departments such as DWP, HMRC, Home Office, MoJ or other central government organisations
Experience working on complex, policy-led or regulated services
Experience preparing for or contributing to GDS service assessments
Experience designing assisted-digital or non-digital journeys alongside online services
Understanding of service design and how interaction design fits into an end-to-end service
Experience mentoring or supporting other designers
Experience working with users who may be vulnerable, digitally excluded or have additional accessibility needs

Conditions

Full-time employment

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