Senior AI Backend Engineer — Scale Real-Time LLM Apps Hybrid

Thomson Reuters; Eagan (MN); On-site; USD 110,000 - 204,000; Full time

Job summary

Thomson Reuters in the United States is seeking a Senior Software Engineer - AI to architect and build high-performance backend services that enable AI-powered features for tax and accounting professionals. You will design scalable systems coordinating LLM interactions, accounting for reliability and observability, and ship production-grade APIs.

Collaborating with ML engineers and product managers, you will drive architecture decisions, implement robust guardrails, and strengthen CI/CD

Qualifications

• Minimum 7+ years building backend systems, APIs, and microservices.
• Strong proficiency in Python, FastAPI, PostgreSQL, and AWS.
• Deep understanding of distributed systems, architecture, and data modeling.
• Experience with AI-driven systems or agent-based architectures.
• Proven ability to deliver production-ready, highly reliable systems.
• Excellent debugging skills and strong crossfunctional communication.
• Comfortable operating in fastpaced, iterative environments.

Responsibilities

• Design and build backend services using Python, FastAPI, and PostgreSQL to support realtime AI interactions and largescale data flows.
• Shape the architectural foundation of our AI platform by defining service boundaries, system interfaces, and scalable design patterns.
• Develop high-performance APIs and microservices that power AI agents, orchestration engines, and content pipelines, ensuring smooth operation under heavy load.
• Integrate backend systems with modern LLM providers (e.g., OpenAI, Anthropic) and implement reliable orchestration, routing, and execution safeguards.
• Productionize AI capabilities with robust error handling, guardrails, telemetry, and deep observability for performance and reliability.
• Lead core engineering decisions—driving architecture reviews, mentoring teammates, and promoting best practices in testing, resiliency, and maintainability.
• Strengthen CI/CD pipelines and DevOps automation to support fast, stable, cloud-native development workflows.
• Collaborate closely with ML engineers, product managers, and designers to turn early AI concepts into scalable backend solutions.
• Deliver backend systems that transform ambitious AI ideas into production-ready experiences used by thousands of professionals.

Skills

Python

FastAPI

PostgreSQL

AWS

Distributed systems

Architectural design

Job description

Thomson Reuters in the United States is seeking a Senior Software Engineer - AI to architect and build high-performance backend services that enable AI-powered features for tax and accounting professionals. You will design scalable systems coordinating LLM interactions, accounting for reliability and observability, and ship production-grade APIs.

Collaborating with ML engineers and product managers, you will drive architecture decisions, implement robust guardrails, and strengthen CI/CD