Senior Software Engineer (Legal), CoCounsel FDE

Thomson Reuters•Frisco, TX

23h•$102,200 - $218,600•Hybrid

About The Position

The Senior Software Engineer (Legal) will work on Thomson Reuters’ CoCounsel Forward Deployed Engineering team to build AI-powered solutions that help legal professionals work smarter and deliver better outcomes. The role works directly with legal customers and cross-functional teams to design, build, and improve secure, scalable, high-quality software and AI solutions for legal workflows. It combines software engineering expertise with legal fluency to turn customer needs into technical products.

Requirements

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.
At least 5 years of 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 designing, testing, iterating, and optimizing 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 lawyers and engineers.
Ability to work independently, navigate ambiguity, and present in client workshops or knowledge-sharing sessions.
Collaborative, growth-oriented mindset and commitment to secure engineering, ethical AI, privacy, and confidentiality.

Nice To Haves

Python scripting experience.
Experience with legal technology platforms, legal SaaS products, or AI-enabled legal workflows.
Experience building or evaluating AI tools for legal practice areas such as transactional work, litigation, compliance, or intake.
Experience with Thomson Reuters legal products or comparable legal AI platforms.

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, and translate 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 using strong practices for security, testing, reliability, and maintainability.
Evaluate AI and LLM solutions for legal use cases, including assessing 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, automated deployments.
Manage technical debt 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 improve the software development lifecycle.

Benefits

Flexible vacation and work arrangements, including work from anywhere for up to 8 weeks per year.
Two company-wide Mental Health Days off annually and access to the Headspace app.
Health, dental, vision, disability, and life insurance programs.
Competitive 401(k) plan with company match.
Paid holidays, sick and safe paid time off, parental leave, and sabbatical leave.
Tuition reimbursement.
Employee incentive programs and an employee stock purchase plan.
Resources for mental, physical, and financial wellbeing, including an Employee Assistance Program and fitness reimbursement.
Flexible Spending and Health Savings Accounts.
Commuter benefits.
Adoption and surrogacy assistance.
Two paid volunteer days off annually and opportunities to participate in pro-bono consulting and ESG initiatives.