Senior Software Engineer

Thomson Reuters•Eagan, MN

1d•Hybrid

About The Position

Thomson Reuters is hiring a Senior Software Engineer – AI for the CoCounsel team. The role builds backend services for next-generation AI agentic products for legal professionals, taking early concepts into scalable, production-ready features for CoCounsel Legal’s Litigation Drafting products. The engineer contributes end to end in a fast-paced, dynamic environment and is empowered to explore new approaches, learn technologies, and develop innovative solutions. The position designs and builds AI-powered backend systems and platform architecture, integrates LLM providers, and helps productionize AI capabilities with reliable orchestration and observability. It also strengthens CI/CD and DevOps workflows, collaborates with Labs, product managers, and designers, and supports the growth of other engineers through technical guidance. The role is described as hybrid for office-based work. Thomson Reuters offers a broad benefits package and an annual bonus may be available based on enterprise and individual performance. The company has 26,000 employees across more than 70 countries.

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 modelling.
Excellent debugging skills and a proven ability to deliver production-ready, highly reliable systems.
Comfort working in fast-paced, iterative environments and strong cross-functional communication skills.

Nice To Haves

BA or BS in Computer Science, or equivalent practical experience.
Experience optimizing backend performance through monitoring, profiling, and tuning for scale.
Hands-on experience building AI-powered product features, ideally agentic AI workflows involving multi-step reasoning.
Experience with tool/API orchestration, LLM APIs, RAG pipelines, and Claude Agent SDK or AgentCore at runtime.
Experience with Agentic UI, including SSE/AG-UI streaming semantics, TypeScript, and React.
Experience with Datadog (logs/RUM/traces), CloudWatch Log Insights, and Braintrust.
Familiarity with AI/ML infrastructure, including vector databases, model serving, and LLM feature cost and latency optimization.
Strong opinions on testing, automation, and operational robustness.
Prior experience building 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 orchestration, routing, error handling, guardrails, telemetry, and observability.
Strengthen CI/CD pipelines and DevOps automation for fast, stable, cloud-native development workflows.
Partner with the Labs team, product managers, and designers to turn early AI agent concepts into scalable, production-ready features for international products.
Mentor and support engineers through pairing, code reviews, and ongoing technical guidance.
Deliver end-to-end solutions and production-ready, reliable systems.

Benefits

Flexible hybrid work environment for office-based roles.
Work-from-anywhere flexibility for up to 8 weeks per year.
Flexible vacation and paid time off, including sick and safe time off and paid holidays.
Two company-wide Mental Health Days off annually.
Access to the Headspace app and Employee Assistance Program.
Retirement savings plan and competitive 401(k) with company match.
Tuition reimbursement.
Employee incentive programs; role may also be eligible for an annual bonus based on enterprise and individual performance.
Health, dental, vision, disability, and life insurance programs.
Parental leave and 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.
Optional hospital, accident and sickness insurance, optional life and AD&D insurance, and Group Legal Identity Theft Protection benefit (paid 100% by the employee).
Access to a 529 Plan.