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About the Role

Lead Applied Scientist, Document Understanding at Thomson Reuters will build state-of-the-art semantic chunking, document enrichment, and knowledge graph construction systems. This role offers a rare opportunity to solve publishing-quality research problems with immediate production impact, shaping how millions of legal professionals research, analyze, and reason over complex legal documents.

Responsibilities

• Design and deploy semantic chunking systems for lengthy, non-uniformly structured legal, tax, and accounting documents
• Build document enrichment pipelines that identify document types, jurisdictions, legal concepts, entities, parties, and other domain-specific metadata
• Develop hierarchical and multi-label document classification systems using both standard and customer-defined taxonomies
• Build LLM-based and traditional NLP information extraction pipelines that identify entities, relationships, citations, references, and key concepts from unstructured content
• Develop knowledge graph construction systems that extract, normalize, connect, and enrich entities, legal concepts, citations, and relationships across large document collections
• Design systems that identify, interpret, and extract insights from complex tabular data embedded within legal, tax, regulatory, and accounting documents
• Create document intelligence capabilities that support downstream search, retrieval, RAG, and agentic AI workflows
• Design robust evaluation frameworks for document understanding systems using expert annotations, synthetic datasets, and production metrics
• Lead technical decisions on document analysis architectures, chunking strategies, extraction methodologies, classification approaches, and knowledge representation frameworks
• Partner closely with engineering teams to deliver scalable, reliable, and production-ready AI systems
• Provide technical leadership and input into AI strategy, platform capabilities, and long-term roadmap decisions
• Mentor applied scientists and machine learning practitioners across the organization

Requirements

• PhD in Computer Science, AI, NLP, Machine Learning, Information Retrieval, or a related field, with demonstrable post-degree industry experience developing and deploying document understanding systems at scale.
• Experience of building production document understanding systems that go beyond basic OCR or document parsing and deliver measurable business impact.
• Hands-on depth across document analysis, information extraction, classification, knowledge representation, evaluation, and production deployment.
• Successfully taken advanced NLP and AI capabilities from research through production and understand how to transform complex, unstructured content into structured knowledge that powers search, retrieval, reasoning, and intelligent workflows.

Skills

• Document understanding AI solutions
• Semantic chunking
• Document enrichment
• Knowledge graph construction
• Hierarchical and multi-label document classification
• LLM-based information extraction
• Traditional NLP information extraction
• Tabular data understanding
• Evaluation frameworks for document understanding systems
• Document analysis architectures
• Chunking strategies
• Extraction methodologies
• Classification approaches
• Knowledge representation frameworks

Location

• Zug, Switzerland
• London, UK

Work Type

• Hybrid Work Model
• Flexible work arrangements
• Work from anywhere for up to 8 weeks per year

Experience Level

• Lead
• Post-degree industry experience

Education Level

• PhD in Computer Science, AI, NLP, Machine Learning, Information Retrieval, or a related field

Benefits

• Flexible vacation
• Two company-wide Mental Health Days off
• Access to the Headspace app
• Retirement savings
• Tuition reimbursement
• Employee incentive programs
• Resources for mental, physical, and financial wellbeing

About the Company

• Thomson Reuters informs the way forward by bringing together the trusted content and technology that people and organizations need to make the right decisions.
• We serve professionals across legal, tax, accounting, compliance, government, and media.
• Our products combine highly specialized software and insights to empower professionals with the data, intelligence, and solutions needed to make informed decisions, and to help institutions in their pursuit of justice, truth, and transparency.
• Reuters, part of Thomson Reuters, is a world leading provider of trusted journalism and news.
• We are powered by the talents of 26,000 employees across more than 70 countries, where everyone has a chance to contribute and grow professionally in flexible work environments.
• At a time when objectivity, accuracy, fairness, and transparency are under attack, we consider it our duty to pursue them.
• As a global business, we rely on the unique backgrounds, perspectives, and experiences of all employees to deliver on our business goals.

Equal Opportunity

• As a global business, we rely on the unique backgrounds, perspectives, and experiences of all employees to deliver on our business goals. To ensure we can do that, we seek talented, qualified employees in all our operations around the world regardless of race, color, sex/gender, including pregnancy, gender identity and expression, national origin, religion, sexual orientation, disability, age, marital status, citizen status, veteran status, or any other protected classification under applicable law.
• Thomson Reuters is proud to be an Equal Employment Opportunity Employer providing a drug-free workplace.
• We also make reasonable accommodations for qualified individuals with disabilities and for sincerely held religious beliefs in accordance with applicable law.