Senior Software Engineer

Thomson Reuters • Frisco, TX

3d • $102,200 - $189,800 • Hybrid

About The Position

Thomson Reuters is seeking a Senior Software Engineer – AI to join the CoCounsel team and build backend services for next-generation AI agentic products for legal professionals. The role focuses on taking early concepts into scalable, production-ready features for CoCounsel Legal’s Litigation Drafting products. The engineer will contribute to AI-powered capabilities such as agentic workflows, LLM orchestration, and content pipelines, while shaping the architecture and reliability of the platform. The position calls for a collaborative, delivery-focused engineer who is comfortable in a fast-paced environment, explores new approaches and technologies, contributes innovative ideas, and takes accountability for end-to-end delivery.

The role partners with Labs, product managers, and designers to develop early AI agent concepts into production-ready features for international products. It also includes mentoring other engineers through pairing, code reviews, and technical guidance.

Requirements

• At least 4 years of professional software engineering experience building and shipping production backend systems, APIs, and microservices used by customers.
• Strong proficiency in Python, FastAPI, PostgreSQL, and AWS or Azure cloud services.
• Deep understanding of distributed systems, architecture, and data modeling.
• Excellent debugging skills and demonstrated ability to deliver production-ready, highly reliable systems.
• Strong cross-functional communication skills and comfort working in fast-paced, iterative environments.

Nice To Haves

• BA or BS in Computer Science, or equivalent practical experience.
• Experience optimizing backend performance, including monitoring, profiling, and tuning for scale.
• Hands-on experience building AI-powered product features, ideally agentic AI workflows involving multi-step reasoning, tool/API orchestration, LLM APIs, RAG pipelines, Claude Agent SDK, or AgentCore at runtime.
• Experience with Agentic UI, including SSE/AG-UI streaming semantics, TypeScript, or React.
• Experience with Datadog (logs/RUM/traces), CloudWatch Log Insights, and Braintrust.
• Familiarity with AI/ML infrastructure, including vector databases, model serving, and cost and latency optimization for LLM-powered features.
• Strong opinions on testing, automation, and operational robustness.
• Prior experience working on products for legal, compliance, or other regulated professional domains.

Responsibilities

• Design and build backend services using Python, FastAPI, and PostgreSQL to support real-time AI interactions and large-scale data flows.
• Contribute to AI-powered capabilities, including agentic workflows, LLM orchestration, and content pipelines.
• Define service boundaries, system interfaces, and scalable design patterns for AI product architecture.
• Integrate backend systems with LLM providers such as OpenAI and Anthropic.
• Implement reliable orchestration, routing, error handling, guardrails, telemetry, and observability.
• Strengthen CI/CD pipelines and DevOps automation for fast, stable, cloud-native development workflows.
• Collaborate with the Labs team, product managers, and designers to turn early AI agent concepts into scalable production features.
• Mentor engineers through pairing, code reviews, and ongoing technical guidance.

Benefits

• Flexible hybrid work environment for office-based roles.
• Work from anywhere for up to 8 weeks per year.
• Flexible vacation and paid sick and safe time off.
• Two company-wide Mental Health Days off annually.
• Access to the Headspace app and Employee Assistance Program.
• Retirement savings plan with company match.
• Tuition reimbursement.
• Employee incentive programs and potential annual bonus based on enterprise and individual performance.
• Health, dental, vision, disability, and life insurance.
• Paid holidays and parental leave.
• Sabbatical leave.
• Flexible Spending and Health Savings Accounts.
• Fitness reimbursement.
• Commuter benefits.
• Adoption and surrogacy assistance.
• Employee Stock Purchase Plan.
• Two paid volunteer days off annually.
• Resources for mental, physical, and financial wellbeing.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed