Interaction Designer in London

hackajob is collaborating with Solirius Reply to connect them with exceptional professionals for this role.

We’re an independent digital transformation consultancy with clients across public and private sectors. We help our clients solve complex technical problems and provide human‑centred solutions that lead to positive outcomes. We do this with multidisciplinary teams of strategists, architects, developers, designers and analysts working closely alongside client stakeholders and end users.

We operate as a flat organisation, and believe in trusting and supporting our team to operate independently, making the most of their expertise. We believe in giving everyone an opportunity to continually learn and grow in the direction they choose, and we actively help people to shape the career they want. We take work‑life balance seriously, enabling people to work flexibly where possible and we strive to create a fun and relaxed working environment allowing our team to thrive.

We believe diversity makes us a stronger company and we seek to employ people with different ideas, styles and skill sets, each able to contribute in unique ways. This diversity engenders a richer, more creative environment – one in which our people, clients and end‑users can all benefit.

The role

We’re looking for an Interaction Designer to join our multidisciplinary team designing and delivering innovative, user‑centred digital public services for Government and Private Sector clients. You’ll be a great listener and communicator with a creative, structured, and logical approach to understanding problems and designing inclusive, human‑centred experiences. We’re specifically looking for a pragmatic team player with an appreciation of both business and user needs, who is keen to develop their ‘T‑shaped’ skills and is not afraid to take on new challenges.

Skills And Experience Required

• Proven experience and knowledge of using GOV.UK Prototype Kit, design systems and design patterns.
• Proven experience of understanding and ensuring usability, accessibility, and inclusivity, in line with WCAG and GOV.UK design guidelines.
• Demonstrates practical experience of working to the Government Service Standard, ideally with service assessment experience across all phases.
• Designs simple, intuitive, and accessible digital services that meet user needs and business objectives.
• Takes an end‑to‑end view of services, creating effective, user‑centred interactions across channels.
• Participates in user research activities, using qualitative and quantitative evidence to inform design decisions and service improvements.
• Rapidly prototypes and tests designs using a range of methods, including paper, digital, and code‑based prototypes.
• Produces clear interaction design artefacts, including sketches, user flows, scenarios, wireframes, journey maps, and prototypes.
• Captures and communicates design decisions clearly and confidently, influencing stakeholders and colleagues with a strong evidence base.
• Facilitates workshops, co‑design sessions, and user testing to explore problems, generate ideas, and validate solutions.
• Works collaboratively within agile, multidisciplinary teams alongside developers, researchers, product managers, and stakeholders to deliver effective services.
• Contributes to design standards and design systems, maintaining consistency across services and interfaces.
• Supports service transformation by improving the efficiency, speed, and usability of public services.

Communication and productivity

• Excellent verbal, written, and facilitation skills, able to engage confidently with stakeholders at all levels.
• Strong technical literacy, able to understand high‑level technical processes, constraints, and concepts.
• Recognises and works within project constraints, supporting teams to deliver value to clients and users.
• Supports and coaches teams and stakeholders in user‑centred design and agile ways of working.
• Contributes to internal culture, tools, processes, and capability development.

Company development

• Contributes to the development of the Design practice and the Interaction Design community of practice.
• Mentors, coaches, supports and manages colleagues.
• Supports thought leadership, case studies, and insights showcasing interaction design expertise.
• Contributes to client proposals and presentations to help win new projects.

The ideal candidate will share our values and ways of working. As your career progresses, you can expect to work across all stages of the development lifecycle, from strategy to implementation, and take assignments across different sectors. This provides a broad base of experience for building an outstanding career.

Candidates should be open to working in different locations for different clients. While most work is remote, candidates should be happy to meet in our London office and travel as client needs dictate.

Equality & Diversity

Solirius Reply is an equal opportunities employer. We are committed to creating a work environment that supports, celebrates, encourages, and respects all individuals and in which all processes are based on merit, competence and business needs. We do not discriminate on the basis of race, religion, gender, sexuality, age, disability, ethnicity, marital status or any other protected characteristics. Should you require further assistance or require any reasonable adjustments be put in place to better support your application process, please do not hesitate to raise this with us.

Benefits

• Competitive Salary
• Bonus Scheme
• Private Healthcare Insurance
• 25 Days Annual Leave + Bank Holidays
• Up to 10 days allocated for development training per year
• Enhanced Parental Leave
• Paid Fertility Leave (5 Days)
• Statutory & Contributory Pension
• EAP with Gym Membership Benefits
• Flexible Working
• Annual Away Days/Company Socials