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Senior Applied Scientist – Legal Tech
Senior Applied Scientist
– Thomson Reuters Labs Are you passionate about developing AI systems that transform the way professionals work? Thomson Reuters Labs experiments, builds, and delivers cutting-edge solutions in machine learning, NLP, and generative AI. Our flagship AI assistant,
CoCounsel , is designed to streamline complex workflows for legal, tax, and business professionals. We’re seeking innovators to expand its capabilities and impact, combining rigorous research with applied development to solve real-world challenges. About the Role: As a
Senior Applied Scientist , you will: Innovate : Develop new skills and capabilities for CoCounsel, focusing on document summarization, legal research, contract analysis, and reasoning improvement. Lead research initiatives in LLM benchmarking, grounding, LLM agents, and enhancing the reasoning abilities of large language models.
Build & Experiment : Design, test, and deploy state-of-the-art models that expand CoCounsel’s ability to address complex, real-world tasks.
Collaborate : Partner with engineering teams, product managers, and stakeholders to translate complex challenges into impactful solutions.
Mentor & Lead : Guide and support junior researchers, fostering a culture of learning, creativity, and collaboration.
Communicate : Publish findings at top-tier conferences (e.g., NeurIPS, ACL, EMNLP, SIGIR) and contribute to patents, ensuring our solutions are cutting-edge and competitive.
Key Responsibilities: Drive the development of AI models to expand CoCounsel’s task-specific capabilities and overall performance.
Enhance CoCounsel’s reasoning, grounding, and responsiveness, ensuring it meets the needs of professional users.
Conduct experiments to evaluate AI performance, focusing on reliability, ethical considerations, and user alignment.
Work with engineering teams to deploy scalable, production-ready models and co-design ML Ops processes for monitoring and retraining.
About You: You’re a fit for the role of
Senior Applied Scientist
if your background includes: PhD in Computer Science, AI, or a related field, or Master’s with equivalent research/industry experience.
5+ years of hands-on experience building and deploying machine learning models in NLP or IR applications.
Expertise in LLMs, including alignment, reasoning enhancement, and grounding techniques.
Strong programming skills (e.g., Python) and experience with modern ML frameworks (e.g., PyTorch, TensorFlow).
Proven ability to translate complex problems into innovative AI applications.
Preferred Qualifications : Experience developing and deploying AI assistants or task-specific skills in production environments.
Familiarity with cloud platforms (AWS, Azure, or Google Cloud) and distributed machine learning systems.
Knowledge of retrieval-augmented generation, synthetic data creation, and efficient fine-tuning methods.
Publications in top-tier ML or NLP conferences.
Why Join Us? Be part of the team shaping
CoCounsel , Thomson Reuters’ flagship AI assistant.
Access to unparalleled datasets, including 60,000+ TBs of legal, tax, and news data.
A culture of experimentation, supported by cutting-edge infrastructure and research resources.
Opportunities to publish, patent, and present your work while solving high-impact challenges.
Competitive benefits, including flexible work arrangements, research time, and professional development funding.
We Value Diversity At Thomson Reuters Labs, we understand that diversity of thought, background, and experience fuels innovation. If you’re excited about our work in areas such as LLM benchmarking, grounding, agents, and enhancing LLM reasoning abilities but aren’t sure you meet every qualification, we encourage you to apply. Your unique perspective and skills could be vital to driving our research and solutions forward. We are an Equal Employment Opportunity (EEO) employer and seek talented, qualified employees in all 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. What’s in it For You? Flexibility & Work-Life Balance:
Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.
Career Development and Growth:
Our Grow My Way programming and skills-first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI-enabled future.
Industry Competitive Benefits:
Flexible vacation, two company-wide Mental Health Days off, access to Headspace, retirement savings, tuition reimbursement, employee incentive programs, and resources for wellbeing.
Culture:
Global recognition for inclusion and belonging, flexibility, work-life balance, and more, guided by our values: Obsess over Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, Stronger Together.
Social Impact:
Two paid volunteer days annually and opportunities for pro-bono work and ESG initiatives.
Making a Real-World Impact:
We help customers pursue justice, truth, and transparency, upholding the rule of law and providing trusted information.
In the United States, Thomson Reuters offers a comprehensive benefits package including health, dental, vision, disability, life insurance, 401k with match, flexible vacation, sick leave, paid holidays, parental leave, and more. Details vary by location. This posting closes on 10/22/2025. About Us Thomson Reuters informs the way forward by bringing together trusted content and technology to empower professionals across legal, tax, accounting, compliance, government, and media. Reuters is a world-leading provider of trusted journalism and news. We are a global company with 26,000+ employees in 70+ countries, committed to flexible work environments and diverse perspectives. We are an Equal Employment Opportunity Employer and make reasonable accommodations for qualified individuals with disabilities and for sincerely held religious beliefs in accordance with applicable law. Learn more about Thomson Reuters at the company's website.
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Senior Applied Scientist
– Thomson Reuters Labs Are you passionate about developing AI systems that transform the way professionals work? Thomson Reuters Labs experiments, builds, and delivers cutting-edge solutions in machine learning, NLP, and generative AI. Our flagship AI assistant,
CoCounsel , is designed to streamline complex workflows for legal, tax, and business professionals. We’re seeking innovators to expand its capabilities and impact, combining rigorous research with applied development to solve real-world challenges. About the Role: As a
Senior Applied Scientist , you will: Innovate : Develop new skills and capabilities for CoCounsel, focusing on document summarization, legal research, contract analysis, and reasoning improvement. Lead research initiatives in LLM benchmarking, grounding, LLM agents, and enhancing the reasoning abilities of large language models.
Build & Experiment : Design, test, and deploy state-of-the-art models that expand CoCounsel’s ability to address complex, real-world tasks.
Collaborate : Partner with engineering teams, product managers, and stakeholders to translate complex challenges into impactful solutions.
Mentor & Lead : Guide and support junior researchers, fostering a culture of learning, creativity, and collaboration.
Communicate : Publish findings at top-tier conferences (e.g., NeurIPS, ACL, EMNLP, SIGIR) and contribute to patents, ensuring our solutions are cutting-edge and competitive.
Key Responsibilities: Drive the development of AI models to expand CoCounsel’s task-specific capabilities and overall performance.
Enhance CoCounsel’s reasoning, grounding, and responsiveness, ensuring it meets the needs of professional users.
Conduct experiments to evaluate AI performance, focusing on reliability, ethical considerations, and user alignment.
Work with engineering teams to deploy scalable, production-ready models and co-design ML Ops processes for monitoring and retraining.
About You: You’re a fit for the role of
Senior Applied Scientist
if your background includes: PhD in Computer Science, AI, or a related field, or Master’s with equivalent research/industry experience.
5+ years of hands-on experience building and deploying machine learning models in NLP or IR applications.
Expertise in LLMs, including alignment, reasoning enhancement, and grounding techniques.
Strong programming skills (e.g., Python) and experience with modern ML frameworks (e.g., PyTorch, TensorFlow).
Proven ability to translate complex problems into innovative AI applications.
Preferred Qualifications : Experience developing and deploying AI assistants or task-specific skills in production environments.
Familiarity with cloud platforms (AWS, Azure, or Google Cloud) and distributed machine learning systems.
Knowledge of retrieval-augmented generation, synthetic data creation, and efficient fine-tuning methods.
Publications in top-tier ML or NLP conferences.
Why Join Us? Be part of the team shaping
CoCounsel , Thomson Reuters’ flagship AI assistant.
Access to unparalleled datasets, including 60,000+ TBs of legal, tax, and news data.
A culture of experimentation, supported by cutting-edge infrastructure and research resources.
Opportunities to publish, patent, and present your work while solving high-impact challenges.
Competitive benefits, including flexible work arrangements, research time, and professional development funding.
We Value Diversity At Thomson Reuters Labs, we understand that diversity of thought, background, and experience fuels innovation. If you’re excited about our work in areas such as LLM benchmarking, grounding, agents, and enhancing LLM reasoning abilities but aren’t sure you meet every qualification, we encourage you to apply. Your unique perspective and skills could be vital to driving our research and solutions forward. We are an Equal Employment Opportunity (EEO) employer and seek talented, qualified employees in all 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. What’s in it For You? Flexibility & Work-Life Balance:
Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.
Career Development and Growth:
Our Grow My Way programming and skills-first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI-enabled future.
Industry Competitive Benefits:
Flexible vacation, two company-wide Mental Health Days off, access to Headspace, retirement savings, tuition reimbursement, employee incentive programs, and resources for wellbeing.
Culture:
Global recognition for inclusion and belonging, flexibility, work-life balance, and more, guided by our values: Obsess over Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, Stronger Together.
Social Impact:
Two paid volunteer days annually and opportunities for pro-bono work and ESG initiatives.
Making a Real-World Impact:
We help customers pursue justice, truth, and transparency, upholding the rule of law and providing trusted information.
In the United States, Thomson Reuters offers a comprehensive benefits package including health, dental, vision, disability, life insurance, 401k with match, flexible vacation, sick leave, paid holidays, parental leave, and more. Details vary by location. This posting closes on 10/22/2025. About Us Thomson Reuters informs the way forward by bringing together trusted content and technology to empower professionals across legal, tax, accounting, compliance, government, and media. Reuters is a world-leading provider of trusted journalism and news. We are a global company with 26,000+ employees in 70+ countries, committed to flexible work environments and diverse perspectives. We are an Equal Employment Opportunity Employer and make reasonable accommodations for qualified individuals with disabilities and for sincerely held religious beliefs in accordance with applicable law. Learn more about Thomson Reuters at the company's website.
#J-18808-Ljbffr