Thomson Reuters · 2 weeks ago
Lead Applied Scientist, Search & Information Retrieval
United States+1 more
Full-time
Remote
Lead/Staff
8+ years expThomson Reuters is a global leader in providing trusted content and technology solutions for professionals across various sectors. They are seeking a Lead Applied Scientist to design and develop large-scale search and information retrieval systems that enhance their legal and enterprise offerings.
Professional ServicesBig DataFinanceLegalConsultingProperty & Casualty InsuranceSoftwareAccountingAdviceAnalyticsFinancial ServicesLegal TechManagement ConsultingRisk ManagementTax Preparation
Responsibilities
Design and deploy search architectures supporting large-scale legal, tax, and enterprise content collections
Build and optimize ingestion pipelines that analyze, enrich, and prepare documents for retrieval
Develop ranking and re-ranking systems using both traditional IR techniques and modern LLM-based approaches
Improve retrieval quality through semantic retrieval, hybrid retrieval, query understanding, and relevance optimization
Design evaluation frameworks for retrieval performance, relevance, ranking quality, and end-user outcomes
Lead technical decisions around indexing strategies, retrieval architectures, ranking models, and search infrastructure
Partner with engineering teams to deliver scalable, reliable, and performant search services
Contribute to the development of self-service search platform capabilities used by internal product teams
Provide technical input to senior leadership on search, retrieval, and AI strategy
Mentor applied scientists and machine learning practitioners across the organization
Qualification
Required
PhD in Computer Science, Information Retrieval, AI, Machine Learning, NLP, or a related field preferred
8+ years of industry experience building production search, information retrieval, ranking, or recommendation systems
Publications at SIGIR, ACL, EMNLP, NeurIPS, ICLR, KDD, WWW, or equivalent venues
Strong production Python skills and experience with PyTorch, Hugging Face Transformers, and distributed model development
Hands-on production depth required in: Search engine architecture, indexing systems, and ingestion pipelines
Ranking and re-ranking systems rather than solely consuming search technologies
Information retrieval, semantic retrieval, hybrid retrieval, and vector search architectures
Query understanding, relevance optimization, and search evaluation methodologies
Retrieval systems supporting large collections of text-rich content
LLM-enhanced retrieval, RAG architectures, and retrieval optimization
End-to-end measurement and evaluation of search quality and user outcomes
Preferred
Experience with legal, regulatory, tax, scientific, or other text-heavy domains
Building retrieval systems over large enterprise knowledge repositories
Experience with Elasticsearch, OpenSearch, Solr, Vespa, or similar search technologies
API platform development and self-service search platforms
Agentic AI systems that incorporate retrieval capabilities
AzureML or AWS SageMaker
Experience building systems that combine search, retrieval, and document understanding capabilities
Benefits
Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities
Work from anywhere for up to 8 weeks per year
Grow My Way programming and skills-first approach
Comprehensive benefit plans to include flexible vacation, two company-wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing
Social Impact Institute; employees two paid volunteer days off annually
Opportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiatives
Market competitive health, dental, vision, disability, and life insurance programs
Competitive 401k plan with company match
Competitive vacation, sick and safe paid time off, paid holidays (including two company mental health days off), parental leave, sabbatical leave
Optional hospital, accident and sickness insurance paid 100% by the employee
Optional life and AD&D insurance paid 100% by the employee
Flexible Spending and Health Savings Accounts
Fitness reimbursement
Access to Employee Assistance Program
Group Legal Identity Theft Protection benefit paid 100% by employee
Access to 529 Plan
Commuter benefits
Adoption & Surrogacy Assistance
Tuition Reimbursement
Access to Employee Stock Purchase Plan
This role may also be eligible for an Annual Bonus based on a combination of enterprise and individual performance
Access to Employee Stock Purchase Plan
Company
Thomson Reuters
Thomson Reuters delivers critical information from the financial, legal, accounting, intellectual property, science, and media markets.
10001+ employees
H1B Sponsorship
Thomson Reuters has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
26%
Represents job field similar to this job
Engineering and Development
Accounting and Finance
Management and Executive
Sales
Product Management
Trends of Total Sponsorships
*2026 (1)
2025 (13)
2024 (12)
2023 (5)
Funding
Current Stage
Public CompanyTotal Funding
unknown1995-11-20IPO
Leadership Team
Steve Hasker
President and CEO
Stephane Bello
Executive Vice President and Chief Financial Officer
Recent News
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