Principal UX Designer, Design Systems

United Kingdom Product Development 6 UI/UX / Permanent / Remote About Us Sophos is a global leader and innovator of advanced security solutions for defeating cyberattacks. The company acquired Secureworks in February 2025, bringing together two pioneers that have redefined the cybersecurity industry with their innovative, native AI-optimized services, technologies and products. Sophos is now the largest pure-play Managed Detection and Response (MDR) provider, supporting more than 28,000 organizations. In addition to MDR and other services, Sophos9 complete portfolio includes industry-leading endpoint, network, email, and cloud security that interoperate and adapt to defend through the Sophos Central platform. Secureworks provides the innovative, market-leading Taegis XDR/MDR, identity threat detection and response (ITDR), next-gen SIEM capabilities, managed risk, and a comprehensive set of advisory services. Sophos sells all these solutions through reseller partners, Managed Service Providers (MSPs) and Managed Security Service Providers (MSSPs) worldwide, defending more than 600,000 organizations worldwide from phishing, ransomware, data theft, other every day and state-sponsored cybercrimes. The solutions are powered by historical and real-time threat intelligence from Sophos X-Ops and the newly added Counter Threat Unit (CTU). Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com. ROLE SUMMARY We9relooking for aPrincipal UXDesignerto play a critical role in shaping the future of Sophos9s enterprise cybersecurity platform. This is our most senior individual contributordesign role, combiningdeep hands-on UX craft with clear ownership of ourdesign system and experience foundations. You9llbe responsible fordriving end-to-end experiencedesign acrosscritical,complex product areas, mentoring others in the craft of UX,while acting as the primary steward of ourdesign system,ensuring it evolves in step with product needs. You9llwork in close partnership with product managers,developers,researchers,and other stakeholders to uncover user needs, translate them into intuitive, scalable solutions,and help9define the future direction of our cloud-native security platform. If9you9repassionate aboutdesigning forcomplexity nd creating clarity at scale,reating and9evolving esign systems, nd want to hear from you.

What you will do

• Translate user, product, and business requirements into clear, usable,

and intuitive experiences

• Lead UX design for significant product areas,

collaborating closely with product managers, developers, architects, and fellow designers

• Develop and refine information architecture,

navigation models, and interaction patterns across products to ensure consistency and clarity

• Be responsible for defining,

managing, creating and evolving our design system, ensuring scalable and accessible UX patterns

• Balance design system integrity with real product needs,

knowing when to extend, refactor, or introduce new patterns

• Drive adoption and correct usage of the design system across product teams through guidance,

reviews, and enablement

• Conduct research in collaboration with our researcher or independently;

synthesize data from interviews, analytics, internal SMEs, customer feedback, and competitive analysis

• Lead or co-lead usability testing sessions;

define test goals, write scripts, observe users, and analyze results to inform design

• Facilitate and lead collaborative workshops (e.g.

sketching, journey mapping, prioritization, concept ideation) to drive alignment and insight

• Develop and refine information architecture across products ensuring consistency and clarity in navigation and labelling
• Map end-to-end user journeys and workflows to identify pain points and opportunities
• Create wireframes mockups and high-fidelity interactive prototypes to communicate and validate design direction
• Serve as a senior design voice within cross-functional teams championing user-centered thinking and high UX standards
• Mentor other designers through critique pairing and guidance on craft systems thinking problem-solving
• Support Agile development by contributing to user stories acceptance criteria design QA

What you will bring

• 7+ years of UX design experience (preferably in cybersecurity products B2B SaaS or enterprise software)
• Proven mastery of design systems: creating maintaining evolving component libraries interaction patterns in Figma
• Deep passion for crafting thoughtful elegant solutions to complex user problems
• Extensive experience designing for large-scale complex systems ideally in B2B SaaS or enterprise software
• Strong understanding of accessibility usability heuristics cognitive principles that underpin high-quality UX
• Track record of effective collaboration with product engineering architecture partners
• You’ll need to work with UX designers developers product owners technical architects to define product experience champion the user.
• Excellent communication storytelling skills ability to clearly articulate design rationale to varied audiences
• Mastery of wireframing prototyping tools such as Figma along with strong visual interaction design skills
• Experience working in cybersecurity or another highly technical domain is strongly preferred
• A solid portfolio demonstrating end-to-end UX work for complex systems or workflows

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