Senior Product Designer . Prolific

Hard Problems; United Kingdom; Remote; GBP 70,000 - 90,000; Full time

Job summary

Prolific, a UK-based research platform, is seeking a Senior Product Designer embedded in a cross-functional team with engineers, PMs, data scientists, and operations to own the customer experience. You will conduct user research with support from researchers and apply iterative design to improve the end-to-end flow.

Responsibilities include defining and improving the product experience, contributing to the design system, prototyping solutions, and collaborating with product and engineering to

Qualifications

• Proficiency with design tools, particularly Figma.
• Experience with information architecture and mapping complex systems and business processes.
• Strong interface design skills in dynamic contexts.
• Comfort with product analytics and A/B or multivariate testing.
• Experience working in fast-paced, changing environments.
• Systems thinking and curiosity about people's behaviour.
• Nice to have: knowledge of inclusive design and accessibility (AA).

Responsibilities

• Identify and solve a wide range of problems through discovery, definition, and design.
• Help define, monitor, and improve the product experience for Prolific users.
• Contribute to the design system and evolve processes for faster, consistent experiences.
• Explore and prototype solutions to business problems with data-informed design and rapid iteration.
• Build understanding of user motivations through workshops, research, and feedback loops.
• Create flows, journeys, mental models, service maps, wireframes, and prototypes.
• Test and evaluate prototypes for usability, value, and feasibility.
• Work with product and engineering to co-create solutions and communicate decisions clearly.

Skills

Figma

Information architecture

Interface design

Product analytics

A/B testing

Fast-paced environments

Systems thinking

Inclusive design

AA accessibility

Job description

# Senior Product DesignerProlific, UKOther## Why this work mattersProlific accelerates scientific and AI research by connecting over 35,000 researchers with a diverse, verified pool of fairly-paid participants, making trustworthy human data widely accessible.View the full listing and apply →Listed 14 Oct 2026Applications are handled by Prolific, not by Hard Problems.## About the roleProlific runs a platform that connects researchers and companies with a global pool of participants, enabling the collection of high-quality, ethically sourced human behavioural data and feedback. This data is used to develop more accurate and well-aligned AI systems. The company sits at the intersection of academic and industry research, and positions itself as a human data infrastructure provider for the next wave of AI development.### The roleThe Senior Product Designer sits within the Product, Research and Design group and is embedded in a cross-functional team alongside engineers, product managers, data scientists, and operational and customer-facing colleagues. You would be the person accountable for the product's customer experience and satisfaction within your domain, working experimentally and iteratively, and conducting user research independently with support from consulting user researchers.### What you would do* Identify and solve a wide range of problems through discovery, definition, and design, connecting individual decisions to the broader product strategy.* Help define, monitor, and improve the product experience for Prolific users, spotting gaps across the end-to-end experience.* Contribute to the design system and evolve design processes to enable faster, more consistent, and more enjoyable experiences.* Explore and prototype a range of solutions to customer and business problems, championing data-informed design and rapid iteration.* Build a deep understanding of the motivations and behaviours of data collectors, account administrators, developers, and participants through workshops, research, and feedback loops.* Create flows, user journeys, mental models, service maps, wireframes, and prototypes that drive clarity and collaboration.* Test and evaluate prototypes and experiments for usability, value, and feasibility.* Work closely with product and engineering to co-create solutions and roll-out strategies, and communicate design decisions with clarity and confidence across the whole organisation.### What they are looking for* Proficiency with design tools, particularly Figma.* Experience with information architecture and mapping complex systems and business processes.* Strong interface design skills, with a deep understanding of visual and interactive design in dynamic contexts.* Comfort with product analytics and A/B or multivariate testing.* Experience working in fast-paced, constantly changing environments.* Systems thinking and curiosity about people's behaviour.* Nice to have: knowledge of B2B and enterprise customer needs; familiarity with the AI tooling landscape; understanding of developer experience, APIs, and common developer tools; experience in a scale-up environment; knowledge of inclusive design and accessibility (the team works to AA standard).### Working arrangementsThis role is fully remote and open to UK-based applicants only. Right to work in the UK is required.## DetailsLocation: UKOn-site or remote: Remote (UK-based)