Senior Interaction Designer

Sanderson Government & Defence; City Of London; Remote; GBP 100,000 - 132,000; Full time

Job summary

Sanderson Government & Defence is seeking a Senior Interaction Designer for a 12-month contract. The role is remote with occasional travel to London, inside IR35 and a daily rate of up to £629. You will contribute to central government digital services, shaping accessible, user-centred experiences for citizens.

You will work within a high-performing multidisciplinary team, delivering discovery to live services and ensuring alignment with GDS standards and service manuals. BPSS eligible.

Qualifications

• Proven experience as Senior Interaction Designer in agile, multidisciplinary teams.
• Strong knowledge of GDS standards, design principles and Government Service Manual guidance.
• Experience designing user-centred services from discovery through live.
• Expertise in interaction design, IA, navigation, and user flows.
• Ability to create wireframes, prototypes and high-fidelity designs with industry tools.
• Strong understanding of accessibility, including WCAG and inclusive design.
• Experience collaborating with User Researchers, Service Designers, Content Designers, Developers and PMs.
• Confidence presenting design decisions to stakeholders at all levels.

Responsibilities

• Lead interaction design activities across complex government digital services.
• Design intuitive user journeys, task flows and interactions based on user needs and evidence.
• Develop wireframes, prototypes and design patterns to validate solutions.
• Ensure services are accessible, usable and aligned to GDS standards.
• Work collaboratively within multidisciplinary teams to iterate and improve designs.
• Contribute to design assurance, service assessments and continuous improvement.

Skills

GDS standards

User-centred design

Wireframes & prototypes

Accessibility (WCAG)

Stakeholder collaboration

Presenting design decisions

Design systems

Job description

Senior Interaction Designer | 12 Month Contract | Up to £629 per Day | Inside IR35

Senior Interaction Designer - GDS | Central Government | BPSS Eligible

We're supporting a major Central Government programme seeking an experienced Senior Interaction Designer to join a high-performing multidisciplinary team delivering critical digital services. This is an exciting opportunity to shape intuitive, accessible and user-centred experiences that impact citizens nationwide.

Role Details

• Position: Senior Interaction Designer
• Contract Length: 12 Months
• Rate: Up to £629 per day
• IR35 Status: Inside IR35
• Location: Remote with occasional travel to London
• Clearance: Must be eligible for BPSS
• Sector: Central Government

Essential Experience

• Proven experience working as a Senior Interaction Designer within agile, multidisciplinary teams.
• Strong knowledge of GDS standards, design principles and Government Service Manual guidance.
• Experience designing user-centred digital services from discovery through to live.
• Expertise in interaction design, information architecture, navigation structures and user flows.
• Ability to create wireframes, prototypes and high-fidelity designs using industry-standard tools.
• Strong understanding of accessibility standards, including WCAG and inclusive design practices.
• Experience collaborating closely with User Researchers, Service Designers, Content Designers, Developers and Product Managers.
• Confidence presenting design decisions and influencing stakeholders at all levels.

Key Responsibilities

• Lead interaction design activities across complex government digital services.
• Design intuitive user journeys, task flows and interactions based on user needs and evidence.
• Develop wireframes, prototypes and design patterns to validate and communicate solutions.
• Ensure services are accessible, usable and aligned to GDS standards.
• Work collaboratively within multidisciplinary teams to iterate and improve designs.
• Contribute to design assurance, service assessments and continuous improvement activities.

Desirable Experience

• Previous experience delivering digital services within Central Government.
• Experience preparing for and supporting GDS Service Assessments.
• Familiarity with UK Government design systems and pattern libraries.
• Experience within Healthcare, NHS or wider Health sector digital programmes would be highly desirable.
• Experience working on complex, high-volume citizen-facing services.

What's on Offer?

Up to £629 per day Inside IR35
12-month engagement
Predominantly remote working with occasional London travel
Opportunity to work on high-profile government transformation programmes
Collaborative and user-centred delivery environment

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.