Principal Engineer, CoCounsel Application Thomson Reuters Holdings Inc•Ann Arbor, MI• Replacement: This position is open due to an existing vacancy to support our evolving business needs. Principal Engineer, CoCounsel Application Want to shape the future of AI in legal practice? Join Thomson Reuters as a Principal Engineer and drive innovation for CoCounsel, the leading AI Assistant for legal professionals. At Thomson Reuters, we're revolutionizing legal work through our CoCounsel Platform. As Principal Engineer for CoCounsel Application, you'll partner with the Sr. Director for CoCounsel Application to define and execute the technical vision for our generative AI products, ensuring we deliver powerful, user-friendly, and innovative solutions that transform how legal professionals work. About the Role In this opportunity as Principal Engineer, CoCounsel Application, you will: Provide technical leadership and define software development strategies for critical AI projects, ensuring alignment with business objectives. Lead the design and development of innovative features for CoCounsel, advancing AI-native product experiences. Drive the seamless integration of LLMs and generative AI technologies into user-friendly applications for legal professionals. Streamline the use of Micro Front Ends to ensure low latency, scalability, and excellent user experience. Mentor a globally distributed team of engineering managers, architects, and developers to strengthen engineering culture. Lead complex technical initiatives, exercising autonomy in decision-making and managing technical risk. Collaborate with cross-functional teams to translate business requirements into actionable technical solutions. About You You're a fit for the role of Principal Engineer, CoCounsel Application if your background includes: 10+ years of hands-on software engineering experience with a proven record of developing scalable, web-based solutions. Expertise with modern UI frameworks (React, Angular, Vue, or similar), TypeScript, Node.js, and Python. Experience with AI technologies, including GenAI concepts such as prompt engineering, retrieval-augmented generation (RAG), and fine-tuning. Familiarity with cloud platforms (AWS, Azure, or GCP). Excellent interpersonal and communication skills, with the ability to influence across organizational boundaries. Demonstrated ability to mentor others and promote best practices in release management, AI dev tools, and test-driven development. Ability to navigate ambiguity, make data-driven decisions, and deliver results in a fast-paced environment. Additional preferred qualifications include: Experience integrating AI/ML technologies into customer-facing applications. Background in legal technology or enterprise SaaS environments. Advanced degree in Computer Science, Engineering, or a related field. LI-ES1 What's in it For You? Hybrid Work Model: We've adopted a flexible hybrid working environment (2-3 days a week in the office depending on the role) for our office-based roles while delivering a seamless experience that is digitally and physically connected. 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. In Thomson Reuters Holdings Inc Go to Apply