Data analyst for marketplaces

Prolific is not just another player in the AI space – we are the architects of the human data infrastructure that's reshaping the landscape of AI development. In a world where foundational AI technologies are increasingly commoditised, it's the quality and diversity of human-generated data that truly differentiates products and models. As Prolific scales, maintaining a healthy and sustainable marketplace will be critical to our ability to meet growing demand for high-quality human data. We are looking for a Data Analyst to help us understand how well our marketplace is working, identify where supply and demand are not connecting effectively, and measure whether product and algorithmic improvements are delivering better outcomes.

• Help define, monitor and improve the metrics we use to understand marketplace health, including supply-demand balance, fulfilment, quality and concentration.
• Analyse marketplace performance and investigate changes in metrics such as fill rate, time-to-fill, participant availability and quality.
• Work with product and engineering teams to define success metrics and measure the impact of product and algorithmic improvements.
• Analyse experiments to understand whether changes to matching, ranking, recommendation or other marketplace experiences are improving outcomes.
• Build and maintain dashboards and reporting that make marketplace performance visible and actionable.
• Use SQL and other analytical tools to investigate marketplace behaviour, identify trends and surface opportunities or problems.
• Explore how marketplace outcomes differ across customers, participants, use cases and segments.
• Communicate findings clearly and help teams make data-informed product and operational decisions.

• Strong SQL skills and experience analysing complex datasets. Python experience for analysis and experimentation is beneficial.
• Experience working with marketplace, product or operational data and using metrics to understand user and business behaviour.
• Ability to work with measures such as supply and demand, fill rate, time-to-fill, availability, quality and concentration to understand marketplace performance.
• Experience analysing A/B tests or other experiments, including defining success metrics, interpreting results and communicating findings.
• Ability to turn product or marketplace questions into measurable hypotheses and structured analysis.
• Comfortable exploring data to understand why something is happening, rather than only reporting what happened.
• Ability to understand how marketplace performance affects customer experience and wider business outcomes.
• Comfortable working with Product, Engineering and Operations teams and contributing analytical thinking to cross-functional work.
• Ability to translate analysis into simple, actionable insights for both technical and non-technical stakeholders.

• Working for us will place you at the forefront of AI innovation, providing access to our unique human data platform and opportunities for groundbreaking research.
• Join us to enjoy a competitive salary, benefits, and remote working within our impactful, mission-driven culture.