Senior Software Engineer I

Thomson Reuters brings together trusted content and technology to help professionals and organizations make informed decisions. The Senior Software Engineer will build and evolve external integrations for the CoCounsel Applications team, developing full-stack features across React, TypeScript, and Python while contributing to AI-powered capabilities. The role also involves quality assurance, cross-functional collaboration, ownership of workstreams, and knowledge sharing.

Responsibilities:

• Design and implement full-stack features across frontend and backend systems, including hands-on development in our React, TypeScript and Python stacks — and direct contribution to AI-powered capabilities such as agentic workflows, LLM integrations, and MCP/A2A-based tooling
• Apply best practices for code quality, performance, accessibility, testing, and maintainability in your own work, and contribute to raising the bar through thoughtful code reviews
• Partner closely with product, design, and backend teams to clarify requirements, help define APIs, and deliver cohesive user experiences
• Break down features into well-scoped tasks, provide reliable estimates, and take your work from development through production with minimal oversight
• Contribute to a strong engineering culture through pairing, code reviews, and open technical discussion with your teammates

Requirements:

• 4+ years of professional software engineering experience building and shipping production web applications used by real customers
• Experience with modern frontend frameworks such as React, along with a solid understanding of TypeScript and frontend fundamentals
• Experience building APIs and services with Python as a core language, and working familiarity with GenAI concepts including prompt engineering, agentic system design, or LLM orchestration frameworks; exposure to MCP/A2A is a plus
• Track record of taking features from design through production, improving the systems you work in, and making sound technical decisions within your scope
• Comfortable operating in fast-paced, ambiguous environments, with strong communication skills and a collaborative mindset
• BA or BS in Computer Science or equivalent practical experience
• Experience with performance optimization for web applications, including monitoring, profiling, and tuning for scale
• Hands-on experience building AI-powered product features, including working with 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