Taxonomist

Make this the place where you grow. As a global leader in business and technology innovation, we work with top organizations worldwide to deliver solutions that create meaningful impact. With 190,000+ professionals across 70+ countries, we blend deep expertise with a culture that values learning, curiosity, and collaboration. We lead transformation and deliver secure, innovative, industry-specific solutions that move businesses forward. Our people drive everything we achieve, they think bold to deliver the outcome while ensuring every voice is heard. We are looking for an experienced Taxonomist to join an international and multidisciplinary team supporting the evolution of ESCO (European Skills, Competences, Qualifications and Occupations) for the European Commission. In this role, you will contribute to the transformation of ESCO from a traditional taxonomy into a domain ontology, helping improve interoperability, data quality, and skills intelligence across Europe. You will collaborate closely with ontologists, semantic engineers, data scientists, communication specialists, and subject matter experts in a highly collaborative environment based in Brussels. Your role:
• Create, maintain, and enrich taxonomy content, including concepts, labels, definitions, relationships, and metadata.
• Support the transformation of ESCO from a taxonomy into a domain ontology.
• Research, classify, and annotate occupations and skills using authoritative sources.
• Identify and document semantic relationships between concepts to support taxonomy development.
• Perform quality assurance and validation activities to ensure consistency, accuracy, and compliance with established standards.
• Review, validate, and refine taxonomy outputs generated through AI and machine learning processes.
• Analyse taxonomy data to identify gaps, inconsistencies, duplicates, and opportunities for improvement.
• Contribute to the continuous enhancement of taxonomy management tools, methodologies, and processes.
• Collaborate with subject matter experts, data scientists, semantic specialists, and implementation teams to validate and improve taxonomy content.

Your profile
• Experience developing, maintaining, or curating taxonomies, controlled vocabularies, ontologies, classification systems, or other structured knowledge assets.
• Experience researching, analysing, and organising complex information into clear and consistent classification structures.
• Experience working with metadata, data annotation, content classification, or knowledge management practices.
• Familiarity with semantic relationships, hierarchical structures, concept modelling, and taxonomy governance principles.
• Experience performing quality assurance, validation, or data quality activities.
• Experience working with structured and unstructured datasets using spreadsheet, database, or data analysis tools.
• Strong analytical skills with exceptional attention to detail and the ability to work with large volumes of information.
• Excellent written communication and documentation skills.
• Experience modelling taxonomies using SKOS is highly valued.
• Exposure to Artificial Intelligence (AI), Machine Learning (ML), Natural Language Processing (NLP), or Knowledge Graph initiatives is considered an asset. This role describes your starting point at NTT DATA. We believe in long‑term relationships and in supporting your growth. As your skills and ambitions evolve, we will work with you to identify future opportunities, projects, and career paths across our organization. 🌟 Why NTT DATA? 🤝 A collaborative and supportive culture We foster an environment where curiosity, innovation, engagement, and teamwork are celebrated. Our people‑first philosophy is one of the core reasons we continue to be recognized globally. 🚀 Career development & continuous learning Access a structured training path, ongoing learning resources, annual performance reviews, and a dedicated mentorship program — all designed to help you grow professionally and take on new challenges. 💻 Work–life balance supported by our BeFlex policy As a company, we embrace a BeFlex approach that empowers our people with a level of flexibility in how they manage their workday. ✨ Global Top Employer We are proudly certified as a Global Top Employer acknowledging our commitment to being a place where people can grow and thrive. 🌿 Health & well‑being first Your mental well‑being matters. Employees have access to certified psychologists and online mental health workshops. 🌈 Diversity, Equity & Inclusion We are committed to creating a workplace where everyone can thrive, regardless of gender, nationality, sexual orientation, disability, age, or background. Inclusion is part of who we are and how we work. #WeAreAllUnique #YouMakeUsUnique Sound interesting? Apply now or share it with a friend 🔹