Mid-level Data Scientist - Applied AI team

London

At Trustpilot, we're on an incredible journey. We're a profitable, high-growth FTSE-250 company with a big vision: to become the universal symbol of trust. We run the world's largest independent consumer review platform, and while we've come a long way, there's still so much exciting work to do. In the Applied AI team, we're focused on leveraging AI and ML to improve how people discover, interact with, and trust businesses on Trustpilot. We are seeking Data Scientists to join our Applied AI team across B2B, B2C and our brand new Data Products to build intelligent, data-driven product features that improve user experience and deliver business impact. You will collaborate closely with a cross-functional team of engineers, product managers, designers, data analysts, and ML engineers to develop and maintain impactful AI/ML models at scale. To succeed in this role, you'll bring hands-on experience developing and deploying machine learning solutions, especially in areas such as ranking, search, recommendations, conversational experiences and personalization. You\'ll also demonstrate a strong understanding of user behaviour data and how to use it to influence product development. A product mindset and ability to work cross-functionally are essential.

Responsibilities

• Great opportunity to make a real product impact by applying the state of the art in AI and ML.
• Work on Data Science initiatives aimed at improving the Trustpilot consumer experience: from ranking and recommendations to natural language processing and search.
• Build, deploy, and maintain production-ready ML models that directly power features used by millions of users.
• Collaborate with engineers, product managers, and designers to develop user-facing features informed by ML and experimentation.
• Use data and model insights to identify new opportunities for personalization and discovery across the platform.
• Take ownership of specific ML features or components from concept to production and iteration.
• Work with tools such as GCP Vertex AI, BigQuery, Airflow, and emerging ML technologies.
• Be part of a friendly, diverse, innovative, international team and workplace that encourages learning and growth.

Who You Are (Qualifications)

• Experience in a Data Science or Machine Learning role, ideally on consumer-facing products like search, ranking, recommendations, personalization, or discovery.
• Strong hands-on ability with ML modeling (semantic search, ranking algorithms, clustering, recommendation systems, NLP) with a track record of deploying models to production.
• Strong skills in data analysis, statistical modeling, and computational problem-solving; background in Statistics, Mathematics, Physics, or Computer Science is valuable.
• Comfortable with large-scale data and behavioral/user interaction data to build data-driven product features.
• Proficient in Python and SQL; capable across the full ML lifecycle from exploration to deployment.
• Experience with cloud platforms (GCP preferred) and tools such as BigQuery, Vertex AI, and Airflow.
• Familiarity with ML production tooling and CI/CD workflows.
• Comfortable using metrics to monitor, iterate, and improve model performance.
• Excellent communication skills and ability to engage with technical teams and business stakeholders.
• Collaborative and agile; experience working with Product Managers, UX Designers, and Engineers in cross-functional teams.
• Ownership mindset, rapid delivery, and focus on solving real user problems with scalable, measurable solutions.

What\'s in it for you?

• Flexible working options to suit your needs.
• Competitive compensation package + bonus.
• 25 days holiday per year, increasing to 28 days after 2 years.
• Two paid volunteering days per year.
• Rich learning and development opportunities via Trustpilot Academy and Blinkist.
• Pension and life insurance.
• Health benefits including health cash plan, online GP, 24/7 support, Employee Assistance Plan.
• Access to Headspace for mental health support.
• Paid parental leave.
• Transit/commuting benefits and cycle-to-work options.
• Office amenities and regular company-wide events and social activities.
• Access to deals and discounts and independent financial advice services.

Trustpilot is committed to creating an inclusive environment where people from all backgrounds can thrive and where different viewpoints and experiences are valued and respected. Trustpilot will consider all applications for employment without regard to race, ethnicity, national origin, religious beliefs, gender identity or expression, sexual orientation, neurodiversity, disability, age, parental or veteran status. Together, we are the heart of trust.