Senior Front-End Software Engineer AI

We are looking for a Senior Front-End Software Engineer AI to join the CoCounsel team at Thomson Reuters. The team takes early concepts and turns them into scalable, production-ready features for legal professionals.

As a Senior Front-end Engineer, you will own the client architecture for streaming agent interactions, from the React UI to how it ships to production. You will work on cutting-edge Litigation Drafting products that combine a complex workflow style UI with an advanced legal agent.

Key Responsibilities

• Build AI-Powered Front-End Systems: Turn event streams into fast, resilient interfaces, and understand the agent runtimes behind them.
• Shape Front End Architecture: Contribute to the innovation of agentic UI design with a talented team of Front-End engineers and architects.
• Productionize AI Capabilities: Build and maintain CI/CD pipelines for the front end and agent-facing infrastructure.
• Collaborate Cross-Functionally: Partner with Labs team, product managers, and designers to take early AI agent concepts and turn them into scalable features.
• Mentor Engineers: Raise the bar for the team through code review, design docs, mentoring, and well-tested shared components.

Required Qualifications

• Technical Experience: 4+ years of front-end engineering experience, including significant production work in React and TypeScript.
• Technical Skills: Hands-on experience with AG-UI protocol or comparable agent-UI protocols and SDKs, SSE events, Claude Agent SDK, AgentCore, AWS or Azure Cloud services.
• Technical Judgment: Excellent debugging skills and a proven ability to deliver production-ready systems.
• Collaboration & Communication: Comfortable operating in fast-paced environments with strong cross-functional communication skills.

Preferred Qualifications

• Knowledge of backend streaming patterns, experience with feature flags, and familiarity with tool calling and structured outputs.
• Experience with Datadog, CloudWatch Log Insights, and Braintrust.

What's in it For You?

• Hybrid Work Model: Flexible hybrid working environment.
• Flexibility & Work-Life Balance: Supportive workplace policies for managing personal and professional responsibilities.
• Career Development and Growth: Culture of continuous learning and skill development.
• Industry Competitive Benefits: Comprehensive benefit plans, including flexible vacation and retirement savings.
• Culture: Globally recognized, award-winning reputation for inclusion and belonging.
• Social Impact: Opportunities to make an impact in the community with paid volunteer days off.