Senior AI Legal Engineer — CoCounsel FDE

Thomson Reuters; Ann Arbor (MI); Hybrid; USD 102,000 - 190,000; Full time

Benefits offered by this job

Hybrid work model

Benefits package

Paid time off

Job summary

Thomson Reuters in the United States is seeking a Senior Legal Engineer to design, build, and deploy AI-enabled legal software. You will work with lawyers and engineers to translate real-world needs into secure, scalable products for legal workflows.

Travel to client sites may be required. The role emphasizes Python development, distributed systems, cloud-native architectures, and prompt engineering to improve legal outcomes.

Qualifications

• A JD, formal legal training, or equivalent depth of experience in a legal-practice environment.
• Fluency in legal terminology and experience working directly with or alongside legal teams.
• 5+ years of pr (sic)
• Professional software engineering experience.
• Strong proficiency in Python and experience building production-grade software.
• Experience designing and delivering distributed systems, microservices, APIs, and cloud-native applications.
• Strong knowledge of AI and LLM evaluation methodologies.
• Advanced prompt-engineering skills, including the ability to design, test, iterate, and optimize prompts for legal-domain use cases.
• Experience evaluating AI-generated outputs for legal accuracy, relevance, reliability, and safety.
• Excellent written and verbal communication skills, with the ability to engage credibly with both lawyers and engineers.
• Comfort working independently, navigating ambiguity, and presenting in client workshops or knowledge-sharing sessions.
• A collaborative, growth-oriented mindset and a commitment to secure engineering, ethical AI, privacy, and confidentiality

Responsibilities

• Design, develop, test, and deploy end-to-end software solutions for complex legal workflows and AI-enabled products.
• Partner directly with legal customers to understand their needs, workflows, and challenges, translating requirements into scalable technical solutions.
• Architect and build modern cloud-native systems using distributed services, microservices, APIs, containerization, and orchestration technologies.
• Develop production-grade Python software while applying strong engineering practices for security, testing, reliability, and maintainability.
• Evaluate AI and LLM solutions for legal use cases, including assessing outputs for legal accuracy, relevance, reliability, and usability.
• Design, iterate, and optimize advanced prompting strategies for specialized legal-domain tasks.
• Apply DevOps and Infrastructure as Code practices to support secure, reliable, and automated deployments.
• Manage technical debt effectively while balancing immediate delivery needs with long-term scalability and system health.
• Mentor junior engineers through code reviews, technical guidance, coaching, and knowledge sharing.
• Collaborate with engineering, product, legal, and design partners to prioritize work, manage delivery commitments, and continuously improve the software development lifecycle.

Skills

Python

Distributed systems

APIs

Cloud-native

Prompt engineering

AI/LLM evaluation

Software engineering

Security practices

Mentoring

Client communication

Education

JD or equivalent legal training

Tools

DevOps tools

Containers/Kubernetes

Job description

Thomson Reuters in the United States is seeking a Senior Legal Engineer to design, build, and deploy AI-enabled legal software. You will work with lawyers and engineers to translate real-world needs into secure, scalable products for legal workflows.

Travel to client sites may be required. The role emphasizes Python development, distributed systems, cloud-native architectures, and prompt engineering to improve legal outcomes.