Senior Interaction Designer in London

As a Senior Interaction and Product Designer at TPXimpact, you will be solving problems across our priority clusters, including transforming government, health, not for profit, commercial and planning and infrastructure. You will work on ideas for products; creating plans, flows, prototypes, and user interfaces that are easy to use and accessible. You will guide teams through the process of design; setting an example, by telling powerful stories and building sustainable relationships, giving others the assurance and confidence they need.

On client projects, you will work as part of multidisciplinary teams, including others in DT Design and across TPXimpact as well as associates and client teams to produce high-quality work that meets the needs of users. In DT Design, you will play an active role in contributing to the Interaction & Product Design practice, developing our service offers and helping us achieve our missions.

Dimensions

• Key performance indicators for the role
• Problem solving responsibility and complexity Medium/high, contributing to project delivery and providing practice-specific support.
• Capable of managing ambiguity and adapting to fast-changing situations with limited guidance.

Internal / External interactions

• Support delivery and client relationships
• Contribute to practice growth (internal impact, sharing, blogging)
• Contribute to business growth (bids, proposals, pitches)

About You Responsibilities

• Developing strategy — zooming out to see the bigger picture, identifying interaction design opportunities and navigating ambiguity to shape product strategy aligned with long‐term goals
• Framing problems — as hypotheses to test, prioritising them based on risk and building shared understanding, especially with clients or stakeholders who are earlier in their digital maturity
• Testing assumptions — generating multiple ideas, establishing metrics to measure success and guiding the team to respond to evidence‐based insights
• Creating prototypes — using technical knowledge in the right level of details (paper, clickable, or code) and testing ideas with users to influence decision‐making
• Designing for accessibility — leading inclusive design from start to finish across discovery, alpha, and beta, and implementing comprehensive accessibility testing plans
• Establishing design patterns — auditing designs for consistency, effectively using existing design systems, reducing complexity and technical debt
• Working with developers — bridging the gap from user needs to tech implementation, communicating design intent clearly to translate designs into working software
• Communicating design decisions — telling the compelling story of our work and impact, and consistently presenting yourself in a confident and effective manner in complex project environments
• Elevating capabilities — actively mentoring others, providing proactive and actionable feedback, fostering an inclusive team culture
• Driving practice growth — actively sharing knowledge with wider audiences and strategically managing your time to deliver value while supporting bid, proposals, or pitches

Professional knowledge and experience

• Defining product design strategy, problem framing and propositions as well as managing assumptions and using hypothesis‐driven approaches to support long‐term goals
• Creating and designing prototypes using a mix of methods (paper, clickable and code) to test hypotheses and drive decision‐making throughout different stages of design
• Designing inclusively, applying accessibility standards and using assistive technologies in testing to design solutions that work for everyone
• Bridging the gap to technology by collaborating with developers in technical or complex programmes, translating design into working software and actively reducing technical debt
• Working with ambiguity to build shared understanding, effectively engaging stakeholders and building digital maturity
• Establishing metrics to rigorously evaluate design success and foster a culture of continuous improvement
• Identify skill gaps to mentor and elevate others in the team, fostering inclusive team cultures
• Navigating complexity, knowing when and how to elevate wider issues and working effectively through blockers
• Telling the story of our work and inspiring a design community environment, increasing engagement and knowledge sharing while making space for everyone to contribute equally
• Strategically managing time to deliver maximum value to our clients and their users while actively contributing to practice and business growth.

Experience

• Working in the public sector or to the UK Government Service Standard
• Confidence using co‐design approaches to bring different people together, including users and stakeholders
• Line managing other designers to support their development and growth
• Co‐developing and running formal learning activities or training sessions to increase the skills and confidence of our clients and staff.

Technical skills

• Frame product strategy and problem propositions in ways others can understand to guide teams and decision‐making
• Apply information architecture, micro‐interaction, design systems and graphic/visual design principles (composition, typography, layout, etc) to create high quality designs that developers can easily interpret
• Apply various dimensions of fidelity (visual, interaction, content, data, etc) appropriately to test multiple ideas and take experimental approaches to prototyping
• Apply digital accessibility principles and standards (WCAG) across all stages, implementing testing plans that use assistive technologies (JAWS, VoiceOver, Magnifier, and Dragon)
• Audit designs for consistency, differentiate between patterns and components, and contribute to complex design systems (GOV.UK, NHS, etc)
• Demonstrate the value of prototyping in code, using tools like GOV.UK and NHS prototype kits
• Understand, research and responsibly experiment with emerging technologies (large language models, generative AI, etc) and their impact on design practice
• Raise issues promptly and effectively manage the escalation of problems that have a wider scope that your team
• Own your learning and development while running internal initiatives to deepen the knowledge of others
• Collaborate effectively with others and engage sceptics on the value of design

Benefits Include:

• 30 days holiday + bank holidays
• 2 volunteer days for causes that you are passionate about
• Maternity/paternity - 6 months Maternity Leave, 3 months Paternity Leave
• Life assurance
• Employer pension contribution of 5%
• Health cash plan
• Personal learning and development budget
• Employee Assistance Programme
• Access to equity in the business through a Share Incentive Plan
• Green incentive programmes including Electric Vehicle Leasing and the Cycle to Work Scheme
• Health assessments

We are committed to having a positive impact on the clients and the communities we serve. We actively encourage applications from all genders, ethnicities, disabled people, members of the LGBTQIA+ community, and those from lower socio-economic backgrounds.