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Trustpilot is a profitable, high-growth FTSE-250 company and the world's largest open customer review platform. The company is on a mission to become the universal symbol of trust, with over 350 million reviews, 60 million monthly active users, and operations across eight global cities.
As Senior Quantitative UX Researcher, you will be the go-to expert on measuring how people and businesses experience trust on Trustpilot—from reading reviews to deciding the platform is worth paying for. You will own the quantitative research agenda for your product areas, set the bar for statistical rigor across the team, and partner with Data Science to build a shared measurement culture.
Key responsibilities include:
**Research Strategy & Execution**
- Design and own the quantitative research roadmap for assigned product areas, including attitudinal measurement, behavioral analysis, and longitudinal tracking.
- Lead large-scale surveys (validated scales, NPS derivatives, trust-perception metrics) and log-data/behavioral analytics (funnels, A/B tests, cohort and retention modeling).
- Build measurement frameworks that define success for review-reading, purchase-decision, and business-subscription journeys, tracking them over time.
**Quantitative Methods**
- Lead advanced quantitative research—surveys, behavioral analytics, experimentation, predictive modeling—using statistical rigor from validated instrument design through automated, auditable analysis pipelines (Python/R/SQL).
- Pioneer AI-assisted techniques (e.g., LLM-assisted open-text analysis) where they genuinely sharpen the work, evaluating any AI tooling with a critical eye on validity and bias.
**Standards, Influence & Coaching**
- Partner with Data Science and Analytics on shared definitions and data pipelines; hold the bar on study design and statistical rigor across the team.
- Translate statistical output into clear, decision-forcing narratives that PMs, designers, and engineers act on.
- Coach other researchers in quantitative methods, raising the team's statistical literacy through pairing and structured feedback.
Trustpilot offers flexible working options, competitive compensation with bonus, 25 days holiday (increasing to 28 after 2 years), two paid volunteering days annually, rich learning and development through the Trustpilot Academy and Blinkist, pension and life insurance, health cash plan, online GP access, Employee Assistance Plan, Headspace access, paid parental leave, season ticket loan, cycle-to-work scheme, and access to 4,000+ deals and discounts. The central London office includes table tennis, gaming corner, coffee bars, and regular team events.
**Requirements**
- 4+ years of UX research experience with strong specialization in quantitative methods and complex, broad-scope work.
- Strong survey methodology expertise (instrument design, sampling, psychometric validation) and statistical grounding (regression, factor/cluster analysis, significance testing).
- Hands-on proficiency in Python, R, or SQL, and direct experience with large behavioral datasets (e.g., Amplitude, Looker, BigQuery).
- Track record of quantitative research that measurably shaped product or business decisions, including A/B testing methodology.
- Hands-on experience experimenting with AI tools in research workflows (e.g., LLM-assisted analysis, AI-assisted qual coding, or evaluating AI-powered research tooling) with a critical eye on validity and bias.
- AI-curious practitioner who can speak critically about AI's limits as well as its power; collaborates fluently with qual, data science, and product analysts.
- Excellent communication and interpersonal skills, with ability to work closely with diverse teams and present data-driven findings in an engaging, accessible way.
