Mid-level Data Scientist - Applied AI (B2C) – London

hackajob is collaborating with Trustpilot to connect exceptional tech professionals with this role.

Trustpilot, a profitable, high-growth FTSE-250 company, is building the universal symbol of trust. We run the world's largest independent consumer review platform and are focused on leveraging AI and ML to improve how people discover, interact with, and trust businesses on Trustpilot. We are seeking a Data Scientist to join the B2C Applied AI team to build intelligent, data-driven product features that improve user experience and deliver business impact.

You will collaborate 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. You should have hands-on experience developing and deploying machine learning solutions, especially in ranking, search, recommendations, and personalization, and a strong understanding of user behavior data.

What You’ll Be Doing

• Make a real product impact by applying state-of-the-art AI/ML techniques.
• Work on data science initiatives to improve the Trustpilot consumer experience, including ranking, recommendations, NLP, and search.
• Build, deploy, and maintain production-ready ML models powering 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 opportunities for personalization and discovery across the platform.
• Own specific ML features or components from concept to production and iteration.
• Work with tools such as GCP Vertex AI, BigQuery, Airflow, and other emerging ML technologies.
• Join a friendly, diverse, innovative, international team that supports learning and growth.

Who You Are

• Experience in a Data Science or Machine Learning role, ideally on consumer-facing products like search, ranking, recommendations, personalization, or discovery.
• Hands-on ML modeling experience with semantic search, ranking algorithms, clustering, recommender systems, and NLP, with a track record of deploying models to production.
• Strong data analysis, statistical modeling, and problem-solving skills; background in a quantitative field (Statistics, Mathematics, Physics, Computer Science).
• Comfort with large-scale data and user-behavior data to build data-driven product features.
• Proficient in Python and SQL; experience 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.
• Ability to monitor and iterate model performance using metrics.
• Excellent communication skills to engage with technical and business stakeholders.
• Collaborative and agile mindset; experience working with Product Managers, UX Designers, and Engineers in cross-functional teams.
• Ownership mindset: move quickly and solve real user problems with scalable, measurable solutions.

What’s in it for you?

• Flexible working options.
• Competitive compensation package + bonus.
• 25 days holiday per year, increasing to 28 after 2 years.
• Two paid volunteering days per year.
• Learning and development through Trustpilot Academy and Blinkist.
• Pension and life insurance; health cash plan and online GP access.
• Headspace mindfulness app access.
• Paid parental leave; cycle-to-work scheme; season ticket loan.
• Central office location with amenities and social programs.
• Access to deals and discounts; independent financial advice.
• Talent acceleration programs to support career growth.

About Us

Trustpilot began in 2007 with a simple idea: be the universal symbol of trust. We are open, independent, and impartial, helping consumers make informed choices and helping businesses grow and improve. We have 300+ million reviews, 64 million monthly active users, and over 1,000 employees with offices worldwide. We’re committed to building an inclusive, diverse environment where everyone can thrive.

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

Trustpilot is a global company and our data practices are designed to protect your personal information as described in our Privacy Policy.

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Engineering and Information Technology

Industries

Software Development