Principal Engineer

Principal Engineer

Are you excited about working at the forefront of applied research in an industry setting? Thomson Reuters Labs is seeking a transformational leader to help maximize the impact of R&D investment and guide the delivery of cutting-edge AI solutions from concept to production. We experiment, we build, we deliver. We support the organization and our customers through applied research in informational retrieval, natural language processing and generative AI. We work closely with product and domain experts to identify compelling solutions at the intersection of user need and technical feasibility. Our team is designing the next generation of research technology for Legal and Tax Professionals globally. We drive AI innovation for Thomson Reuters' Core Research Products, including Westlaw, Practical Law, and Checkpoint.

About the Role: In this opportunity as a Principal Engineer, you will lead a cross-functional team responsible for scaling AI application development and designing robust, highly specialized applications of generative AI for legal and tax. In this hands-on leadership role, you will:

• Design and direct the technology strategy for a new class of AI solutions that serve customer-facing human-in-the-loop applications.
• Enable editorial workflows for AI-assist and task specific model customization at scale.
• Research and evaluate emerging technology to advance the state of LLM application development.
• Ensure solutions align with modern best practices for cloud across platforms and environments.
• Continuously improve ways of working with partner teams across product engineering.

About You: You are a fit for the role of Principal Engineer if your background includes:

• Bachelors Degree in a relevant discipline.
• 10+ years hands-on building AI systems for commercial applications.
• 5+ years of management experience - coaching & developing high-performing teams.
• Expertise in cloud platforms for large-scale AI workloads and infrastructure.
• Knowledge of model versioning, monitoring, and retraining practices, with experience building frameworks for maintaining model performance in production.
• Proven ability to collaborate effectively and align AI system design with business needs.
• Strong desire to design innovative solutions with large language models.

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, whether caring for family, giving back to the community, or finding time to refresh and reset. This builds upon our flexible work arrangements, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.

Career Development and Growth: By fostering a culture of continuous learning and skill development, we prepare our talent to tackle tomorrow's challenges and deliver real-world solutions. 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: We offer 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.

Culture: Globally recognized, award-winning reputation for inclusion and belonging, flexibility, work-life balance, and more. We live by our values: Obsess over our Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, and Stronger Together.

Social Impact: Make an impact in your community with our Social Impact Institute. We offer employees two paid volunteer days off annually and opportunities to engage in meaningful work.