Senior UX/Product Designer – Data Tooling (Contract)

Principle; Slough; Hybrid; GBP 53,000 - 88,000; Full time

Benefits offered by this job

Annual salary up to £88,000

10-month PAYE contract

Hybrid work: 3 days on-site in Central

Inside IR35, PAYE, paid weekly

Job summary

Principle are seeking a Senior UX / Product Designer for a 10-month contract in central London. You’ll shape complex, data-dense tools where clarity comes from design rigor rather than visuals.

Working with UX researchers and engineers, you’ll own end-to-end design, contribute to the design system, and craft experiences across desktop and mobile, with hybrid on-site work three days a week. This role requires explaining thorny problems and defending decisions in a small, senior team.

Qualifications

• 4-6 years of UX/product/interaction design in complex tools.
• Deep experience with Figma to prototype and iterate.
• Portfolio demonstrates thinking, not only screens.
• Ability to explain thorny problems to cross-functional teams.
• Experience with user-research practices.
• Degree in design, UX, or related field.

Responsibilities

• Own end-to-end design from user need to prototype.
• Collaborate with UX researchers to align with user needs.
• Work closely with product and engineering so ships match designs.
• Contribute to design system growth for reusable decisions.
• Design across desktop and mobile.

Skills

4-6 years UX

Figma expert

Portfolio thinking

Systems thinking

User research

Design degree

Education

Design/UX degree

Tools

Figma

Job description

Principle are seeking a Senior UX / Product Designer for a 10-month contract in central London. You’ll shape complex, data-dense tools where clarity comes from design rigor rather than visuals.

Working with UX researchers and engineers, you’ll own end-to-end design, contribute to the design system, and craft experiences across desktop and mobile, with hybrid on-site work three days a week. This role requires explaining thorny problems and defending decisions in a small, senior team.