[Remote] Lead Applied Scientist, Document Understanding

Note: The job is a remote job and is open to candidates in USA. Thomson Reuters is a global leader in providing trusted content and technology solutions. They are seeking a Lead Applied Scientist in Document Understanding to design and develop systems that enhance legal content processing, working on various advanced AI methodologies and collaborating with multiple product teams.ResponsibilitiesDesign and deploy semantic chunking models for lengthy, non-uniformly structured legal documents with adjustable granularity across use casesBuild document enrichment systems using legal and customer-defined taxonomiesDevelop LLM-based knowledge graph construction pipelines that extract and link citations, entities, and legal concepts across diverse legal contentLead knowledge distillation efforts to compress large models into latency-constrained, production-ready SLMsDesign evaluation frameworks — component-level and end-to-end — using expert annotation and synthetic dataOwn technical decisions on architecture, chunking strategy, classification approach, and knowledge extraction methodsPartner with engineering on delivery, reliability, and scale across multiple product linesProvide technical input to senior leadership on AI strategy and roadmapMentor applied scientists and ML practitioners on the teamSkillsPhD in Computer Science, AI, NLP, or a related field — required8+ years of post-degree industry experience shipping document understanding, information extraction, or knowledge graph systems into production — not research-only experiencePublications at ACL, EMNLP, ICLR, NeurIPS, SIGIR, KDD, or equivalentProduction Python and experience with PyTorch, Hugging Face Transformers, and DeepSpeedHands-on production depth required in: Document layout analysis and semantic chunking beyond fixed-size or paragraph-based methodsHierarchical, multi-label document classification with domain-specific and customer-defined schemasEntity recognition and linking, relation extraction, citation parsing, and knowledge graph construction from unstructured textLLM-based information extraction, few-shot and multi-task learning, and post-trainingKnowledge distillation, model compression, and SLM deployment under latency constraintsSynthetic data generation and annotation workflow designEnd-to-end evaluation framework design for document understandingLegal document understanding, legal IE, or legal AI experienceComplex document structures: nested hierarchies, cross-references, non-uniform formattingRetrieval or QA systems over large document collectionsRAG and agentic workflows in enterprise settingsKnowledge graph frameworks for legal or enterprise applicationsAzureML or AWS SageMakerBenefitsFlex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, whether caring for family, giving back to the community, or finding time to refresh and reset.Flexible work arrangements, including work from anywhere for up to 8 weeks per yearGrow My Way programming and skills-first approachComprehensive benefit plans to include flexible vacationTwo company-wide Mental Health Days offAccess to the Headspace appRetirement savingsTuition reimbursementEmployee incentive programsResources for mental, physical, and financial wellbeingTwo paid volunteer days off annuallyOpportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiativesMarket competitive health, dental, vision, disability, and life insurance programsCompetitive 401k plan with company matchMarket leading work life benefits with competitive vacation, sick and safe paid time off, paid holidays (including two company mental health days off), parental leave, sabbatical leaveOptional hospital, accident and sickness insurance paid 100% by the employeeOptional life and AD&D insurance paid 100% by the employeeFlexible Spending and Health Savings AccountsFitness reimbursementAccess to Employee Assistance ProgramGroup Legal Identity Theft Protection benefit paid 100% by employeeAccess to 529 PlanCommuter benefitsAdoption & Surrogacy AssistanceTuition ReimbursementAccess to Employee Stock Purchase PlanAnnual Bonus based on a combination of enterprise and individual performanceCompany OverviewThomson Reuters (TSX/NDAQ: TRI) informs the way forward by bringing together the trusted content and technology that people and organizations need to make the right decisions. It was founded in 2008, and is headquartered in Toronto, Ontario, CAN, with a workforce of 10001+ employees. Its website is https://www.tr.com.Company H1B SponsorshipThomson Reuters has a track record of offering H1B sponsorships, with 1 in 2026, 13 in 2025, 12 in 2024, 5 in 2023. Please note that this does not guarantee sponsorship for this specific role.