Senior Software Engineer - AI, CoCounsel International

Thomson Reuters•Eagan, MN

11d•Hybrid

About The Position

We're looking for a Senior Software Engineer – AI to join the CoCounsel International team and work closely with our Labs team to build new AI agents and adapt them for our international products and features. In this role, you'll build the backend services that bring these agentic capabilities to life, and help take early Labs concepts into scalable, production-ready features used by legal professionals worldwide. If you're passionate about building AI agents and bringing new capabilities to life for legal professionals around the world, we'd love to hear from you. Join us to build, innovate, and make a lasting impact on our CoCounsel application.

Requirements

4+ years of professional software engineering experience building and shipping production backend systems, APIs, and microservices used by real customers.
Strong proficiency in Python, FastAPI, PostgreSQL, and AWS cloud services, with a deep understanding of distributed systems, architecture, and data modeling.
Proven experience designing, building, and deploying production-grade agentic AI workflows — including multi-step reasoning, tool/API orchestration, and LLM-as-judge or eval-driven quality gates — serving real end users at scale.
Excellent debugging skills and a proven ability to deliver production-ready, highly reliable systems.
Comfortable operating in fast-paced, iterative environments, with strong cross-functional communication skills.

Nice To Haves

BA or BS in Computer Science or equivalent practical experience
Experience with performance optimization for backend systems, including monitoring, profiling, and tuning for scale
Hands-on experience building AI-powered product features, including LLM APIs, RAG pipelines, or agentic workflows in a production environment
Familiarity with AI/ML infrastructure including vector databases, model serving, and cost/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

Build AI-Powered Backend Systems: Design and build backend services using Python, FastAPI, and PostgreSQL to support real-time AI interactions and large-scale data flows, with direct contribution to AI-powered capabilities such as agentic workflows, LLM orchestration, and content pipelines.
Shape Platform Architecture: Define service boundaries, system interfaces, and scalable design patterns that form the architectural foundation of our AI platform.
Productionize AI Capabilities: Integrate backend systems with modern LLM providers (e.g., OpenAI, Anthropic) and implement reliable orchestration, routing, error handling, guardrails, telemetry, and deep observability for performance and reliability.
Collaborate Cross-Functionally: Partner closely with our Labs team, product managers, and designers to take early AI agent concepts and turn them into scalable, production-ready features for our international products.
Mentor Engineers: Support the growth of other engineers through pairing, code reviews, and ongoing technical guidance.

Benefits

Flexible hybrid working environment
Flex My Way policies for managing personal and professional responsibilities
Work from anywhere for up to 8 weeks per year
Continuous learning and skill development opportunities
Grow My Way programming
Flexible vacation
Two company-wide Mental Health Days off
Access to the Headspace app
Retirement savings
Tuition reimbursement
Employee incentive programs
Resources for mental, physical, and financial wellbeing
Globally recognized, award-winning reputation for inclusion and belonging, flexibility, work-life balance
Two paid volunteer days off annually
Opportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiatives
Market competitive health, dental, vision, disability, and life insurance programs
Competitive 401k plan with company match
Competitive vacation, sick and safe paid time off
Paid holidays
Parental leave
Sabbatical leave
Optional hospital, accident and sickness insurance paid 100% by the employee
Optional life and AD&D insurance paid 100% by the employee
Flexible Spending and Health Savings Accounts
Fitness reimbursement
Access to Employee Assistance Program
Group Legal Identity Theft Protection benefit paid 100% by employee
Access to 529 Plan
Commuter benefits
Adoption & Surrogacy Assistance
Access to Employee Stock Purchase Plan