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Ontologist

United Kingdom, London · Job Posted May 16, 2026
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Job Description

We are looking to hire an experienced Taxonomist to join the Global New Verticals Catalog team across DoorDash, Wolt, and Deliveroo. This role will focus on developing and improving the processes and models that power DoorDash's three-sided marketplace—Merchants, Dashers, and Customers—as well as its emerging fourth side, Advertisers, with the goal of empowering and growing local economies. Achieving this requires a deep understanding of local businesses, the products and services they offer, and the consumers who interact with them. A strong grasp of the global ecosystem is essential to building and mapping complex taxonomies and entity relationships within local economies. This includes the design, implementation, and governance of large-scale taxonomies to accelerate product development and deliver high-quality consumer experiences. As a Taxonomist on the Global Catalog team, this role will be responsible for Product Categories and Brands taxonomies, as well as the broader attribute platform. The position will work closely with Strategy & Operations, Machine Learning, Engineering, Product, and Data Science partners.

Job Responsibility

  • Build and maintain the metadata schema, attribute systems, and entity relationships within a global ontology platform
  • Design and maintain taxonomies across consumer domains including grocery, alcoholic beverages, apparel and more, ensuring alignment with attribute models
  • Develop and apply best practices for taxonomy and ontology modeling, including hierarchy design, attribute standardization, and relationship definition
  • Identify and address gaps in catalog quality, completeness, and discoverability across international markets
  • Partner cross-functionally with Product, Operations, Analytics, and regional teams to design and operationalize taxonomy and ontology solutions globally
  • Evolve and scale taxonomy and ontology systems for New Verticals, aligning and unifying structures across DoorDash, Wolt and Deliveroo markets
  • Contribute to strategic initiatives that strengthen merchant catalogs and improve the customer shopping experience across international markets

Requirements

  • 5+ years of experience in developing complex taxonomies, ontologies, or structured classification systems in real-world applications
  • Experience with taxonomy or ontology management tools (Graphite, PoolParty, Graphologi, etc.) and have designed taxonomies to support navigation, search, discovery, and analytics at scale
  • Completed a Masters Degree in either Library and Information Science, Linguistics, Philosophy, or a related field

Nice to have

  • Experience with AI tools such as Claude Code and Cursor to accelerate problem-solving, analysis, or workflow execution
  • Proficiency in SQL
  • Familiarity with graph-based or triple-store systems (e.g., RDF, SPARQL) is a plus

What we offer

  • A competitive and comprehensive compensation and benefits package
  • Up to 5% matched pension contributions
  • Free Deliveroo Plus
  • Team lunches from the best local restaurants
  • 25 days annual leave plus bank holidays, increasing with length of time spent working at Deliveroo
  • One day of paid leave per year to volunteer with a registered charity
  • Funded single cover healthcare on our core plan, with the option to add family members at own cost
  • On-site gym (HQ), discounted external gym membership
  • Access to wellbeing apps such as LesMills+, Strava, Headspace, Yogaia via GymPass
  • Discounted dental insurance and a range of other flexible benefits, such as critical illness cover, partner life cover, travel insurance, health assessments
  • Life assurance
  • Maternity, paternity and maternity and shared parental leave, eligible from day one of employment
  • Excellent kit to enable working from home and a parent-friendly working culture
  • Access to free mortgage advice
  • Cycle to Work Scheme or Season Ticket Loans
  • Excellent learning and development opportunities and access to RooLearn

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