Principal Product Designer — Prototyping & Research Integration
Posted 1 day ago by Red Badger
Negotiable
Undetermined
Undetermined
London Area, United Kingdom
Summary: The Principal Product Designer role focuses on integrating prototyping and research to develop a new digital banking product. The position involves collaborating with researchers, engineers, and product managers to create and validate user journeys through rapid prototyping and experimentation. The designer will utilize lean techniques to support continuous discovery and ensure design consistency. This role requires senior-level experience in designing complex digital products and strong prototyping skills.
Key Responsibilities:
- Design and prototype key user journeys from early concepts to production-ready flows
- Create rapid, testable prototypes (from low-fidelity to high-fidelity) to support usability testing and experimentation
- Collaborate closely with UX research to plan tests, synthesise insights, and iterate designs quickly
- Use lean experimentation techniques (e.g. usability testing, A/B testing) to validate decisions early
- Support continuous discovery by turning insight into tangible design exploration
- Contribute to and consume the design system to ensure speed and consistency
Key Skills:
- Senior or Principal-level experience designing complex digital products
- Strong prototyping skills in Figma and related tooling
- Proven experience working hand-in-hand with researchers and engineers
- Comfortable supporting with customer research and testing
- Comfortable designing in ambiguity and iterating quickly based on insight
- Experience working in outcome-led, product-focused teams
Salary (Rate): undetermined
City: London Area
Country: United Kingdom
Working Arrangements: undetermined
IR35 Status: undetermined
Seniority Level: Senior
Industry: IT
Principal Product Designer — Prototyping & Research Integration
The client and the work
This role sits at the intersection of research, design, and experimentation. You’ll rapidly explore ideas for a new digital banking product, using prototyping to validate concepts early and reduce delivery risk, while working closely with researchers, engineers, and product managers.
Main responsibilities
- Design and prototype key user journeys from early concepts to production-ready flows
- Create rapid, testable prototypes (from low-fidelity to high-fidelity) to support usability testing and experimentation
- Collaborate closely with UX research to plan tests, synthesise insights, and iterate designs quickly
- Use lean experimentation techniques (e.g. usability testing, A/B testing) to validate decisions early
- Support continuous discovery by turning insight into tangible design exploration
- Contribute to and consume the design system to ensure speed and consistency
Experience required
- Senior or Principal-level experience designing complex digital products
- Strong prototyping skills in Figma and related tooling
- Proven experience working hand-in-hand with researchers and engineers
- Comfortable supporting with customer research and testing
- Comfortable designing in ambiguity and iterating quickly based on insight
- Experience working in outcome-led, product-focused teams