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About the Role
Join the CoCounsel International team as a Senior Software Engineer – AI, working closely with the Labs team to build new AI agents and adapt them for international products. You will develop backend services for AI capabilities, transitioning early concepts into scalable, production-ready features for legal professionals worldwide.
Responsibilities
- Design and build backend services using Python, FastAPI, and PostgreSQL to support AI interactions and data flows.
- Contribute to AI-powered capabilities such as agentic workflows, LLM orchestration, and content pipelines.
- Define service boundaries, system interfaces, and scalable design patterns for the AI platform architecture.
- Integrate backend systems with LLM providers (e.g., OpenAI, Anthropic) and implement orchestration, error handling, guardrails, telemetry, and observability.
- Collaborate with the Labs team, product managers, and designers to develop AI agent concepts into production-ready features.
- Mentor other engineers through pairing, code reviews, and technical guidance.
Requirements
- 4+ years of professional software engineering experience building and shipping production backend systems, APIs, and microservices.
- Strong proficiency in Python, FastAPI, PostgreSQL, and AWS cloud services.
- Deep understanding of distributed systems, architecture, and data modeling.
- Proven experience designing, building, and deploying production-grade agentic AI workflows.
- Experience with 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 ability to deliver production-ready, highly reliable systems.
- Comfortable operating in fast-paced, iterative environments.
- Strong cross-functional communication skills.
Skills
- Python
- FastAPI
- PostgreSQL
- AWS
- Distributed Systems
- Architecture
- Data Modeling
- Agentic AI
- LLM Orchestration
- RAG Pipelines
- Vector Databases
- Model Serving
- Performance Optimization
- Monitoring
- Profiling
- Tuning for Scale
- Testing
- Automation
- Operational Robustness
Location
- New York City
- San Francisco
- Los Angeles
- Irvine, CA
- McLean, VA
- Washington, DC
Work Type
- Hybrid
Experience Level
- Senior
- 4+ years
Education Level
- BA or BS in Computer Science or equivalent practical experience
Salary/Compensations
- $127,000 USD - $235,000 USD
- $110,000 USD - $204,200 USD
Benefits
- Flexible hybrid working environment (2-3 days a week in the office)
- Flex My Way policies for work-life balance
- Work from anywhere for up to 8 weeks per year
- Continuous learning and skill development programs
- Grow My Way programming
- Skills-first approach
- 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
- 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
- Optional life and AD&D insurance
- Flexible Spending and Health Savings Accounts
- Fitness reimbursement
- Access to Employee Assistance Program
- Group Legal Identity Theft Protection benefit
- Access to 529 Plan
- Commuter benefits
- Adoption & Surrogacy Assistance
- Access to Employee Stock Purchase Plan
About the Company
- Thomson Reuters informs the way forward by bringing together trusted content and technology for decision-making.
- Serves professionals across legal, tax, accounting, compliance, government, and media.
- Products combine specialized software and insights to empower professionals.
- Reuters is a world leading provider of trusted journalism and news.
- Powered by 26,000 employees across more than 70 countries.
- Committed to objectivity, accuracy, fairness, and transparency.
- Global business relying on diverse backgrounds and perspectives.
- More information can be found on thomsonreuters.com.
Equal Opportunity
- Seeking talented, qualified employees regardless of race, color, sex/gender, including pregnancy, gender identity and expression, national origin, religion, sexual orientation, disability, age, marital status, citizen status, veteran status, or any other protected classification under applicable law.
- Thomson Reuters is proud to be an Equal Employment Opportunity Employer providing a drug-free workplace.
- Makes reasonable accommodations for applicants with disabilities, including veterans with disabilities, and for sincerely held religious beliefs in accordance with applicable law.
- In the United States, requests for accommodation can be directed to HR.Leave-Expert@thomsonreuters.com.