Senior Software Engineer - AI

Reuters; Ciudad de México; Híbrido; MXN 900.000 - 1.300.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work model

Flexible vacation

Mental Health Days off

Headspace app access

Tuition reimbursement

Descripción de la vacante

Thomson Reuters in Mexico City is seeking a Senior Front-End Software Engineer to join the AI-enabled CoCounsel team in a hybrid role. You will lead the client architecture for streaming agent interactions from the React UI to production, building scalable front-end experiences for legal professionals.

You will collaborate with labs, product managers and designers, mentor engineers, and implement robust AI features with CI/CD pipelines and end-to-end testing to ensure reliability in dynamic

Formación

• 4+ years of front-end engineering experience with production React/TypeScript projects.
• Experience with agent-UI protocols and streaming UI concepts.
• Strong debugging skills and ability to deliver reliable production systems.

Responsabilidades

• Build AI-powered front-end systems turning event streams into responsive interfaces.
• Shape front-end architecture with cross-functional teams.
• Productionize AI capabilities with CI/CD pipelines, testing, and observability.
• Collaborate with product managers and designers to deliver scalable features.
• Mentor engineers through code reviews and shared components.

Conocimientos

React

TypeScript

SSE events

AgentUI protocols

CI/CD

Testing

Debugging

Cross-functional communication

Educación

BA or BS in Computer Science or equivalent

Herramientas

Claude Agent SDK

AgentCore

GitHub Actions

GitLab CI

CodePipeline

Playwright

Datadog

Cloud services (AWS/Azure)

Descripción del empleo

## Senior Software Engineer - AIApply: Hybrid: Mexico, Mexico City: Full time: Posted Today: End Date: December 4, 2026 (28 days left to apply): JREQ205144**Job Description**We're looking for a Senior Front-End Software Engineer AI to join the CoCounsel team. We are building the next generation of AI agentic products for legal professionals. The team takes early concepts and turns them into scalable, production-ready features.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 be working on our cutting-edge Litigation Drafting products which are leading the market by combining a complex workflow style UI with an advanced legal agent. The UI drives a long running process with frequent human input, and our innovative front end is responsible for making this feel intuitive, responsive and controllable during challenging drafting tasks.We are looking for team players with a strong sense of urgency and a desire to work in a fast-paced, dynamic environment who will drive the delivery of timely solutions. You are empowered to try new approaches and learn new technologies. You will have agency to contribute innovative ideas, create solutions, and will be accountable for end-to-end deliveries.**Key Responsibilities*** **Build AI-Powered Front-End Systems:**You’ll turn event streams (SSE and AG-UI protocol events) into fast, resilient interfaces, understand the agent runtimes behind them (Claude Agent SDK, AgentCore).* **Shape Front End Architecture:**Contribute to a talented team of Front-End engineers and architects across the broader CoCounsel team and help drive the innovation of agentic UI design* **Productionize AI Capabilities:**Build and maintain CI/CD pipelines for the front end and agent-facing infrastructure. Run deployments and smoke tests. Help build end-to-end Playwright tests for scale testing and build observability into client and delivery process.* **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 products* **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 to build products used by real customers. Track record of building performant UIs under rapid, continuous updates.* **Technical Skills:**Hands-on experience with the AG-UI protocol or comparable agent-UI protocols and SDKs. Strong proficiency in SSE events, Claude Agent SDK, AgentCore, AWS or Azure Cloud services. Hands-on experience building and owning CI/CD pipelines for production web applications (GitHub Actions, GitLab CI, CodePipeline, or similar), including automated testing and safe release practices. Experience modeling complex async client states.* **Technical Judgment:**Excellent debugging skills and a proven ability to deliver production-ready, highly reliable systems.* **Collaboration & Communication:**Comfortable operating in fast-paced, iterative environments, with strong cross-functional communication skills. Strong product sense and the ability to work from ambiguous requirements to a polished, accessible interface**Preferred Qualifications*** BA or BS in Computer Science or equivalent practical experience* Knowledge of backend streaming patterns (Node, Python/FastAPI, etc.) sufficient to debug end to end* Experience with feature flags (e.g. Launch Darkly) and canary releases* Familiarity with tool calling, structured outputs, MCP, and streaming partial JSON parsing* Experience with Datadog (logs/RUM/traces), CloudWatch Log Insights, and Braintrust* Strong opinions on testing, automation, and operational robustness* Prior experience working on products for legal, compliance, or other regulated professional domains. **#LI-FZ1** **What’s in it For You?*** **Hybrid Work Model:** We’ve adopted a flexible hybrid working environment for our office-based roles while delivering a seamless experience that is digitally and physically connected.* **Flexibility & Work-Life Balance:** Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, whether caring for family, giving back to the community, or finding time to refresh and reset. This builds upon our flexible work arrangements, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.* **Career Development and Growth:** By fostering a culture of continuous learning and skill development, we prepare our talent to tackle tomorrow’s challenges and deliver real-world solutions. Our Grow My Way programming and skills-first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI-enabled future.* **Industry Competitive Benefits:** We offer comprehensive benefit plans to include flexible vacation, two company-wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing.* **Culture:** Globally recognized, award-winning reputation for inclusion and belonging, flexibility, work-life balance, and more. We live by our values: Obsess over our Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, and Stronger Together.* **Social Impact:** Make an impact in your community with our Social Impact Institute. We offer employees two paid volunteer days off annually and opportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiatives.* **Making a Real-World Impact:** We are one of the few companies globally that helps its customers pursue justice, truth, and transparency. Together, with the professionals and institutions we serve, we help uphold the rule of law, turn the wheels of commerce, catch bad actors, report the facts, and provide trusted, unbiased information to people all over the world.