AI Engineer III – Agentic AI in Production

American Express; Phoenix (AZ); On-site; USD 120,000 - 180,000; Full time

Job summary

American Express in Phoenix is seeking an AI Engineer III to contribute to production agentic AI systems that handle real financial data and serve real customers. You will design, build, and ship AI-powered features alongside experienced engineers, product managers, and designers in a regulated, customer-facing environment.

You will deepen your expertise in LLMs, agentic systems, and production AI engineering, writing production code and participating in system design and operations after launch

Qualifications

• 4+ years of professional software engineering experience.
• Hands-on experience building AI-powered features or ML systems.
• Strong fundamentals in at least one backend language (Python, Go, or TypeScript).
• Familiarity with APIs, cloud concepts, and modern development practices.
• Interest in agentic AI, autonomy, and AI-assisted development workflows.
• Strong collaboration and customer-minded approach.

Responsibilities

• Contribute to the design and implementation of LLM-powered features.
• Build agentic AI workflows that reason over context and perform actions with guidance from senior engineers.
• Help implement and maintain RAG pipelines over financial data with emphasis on correctness and safety.
• Contribute to AI infrastructure such as LLM services and evaluation tooling.
• Operate AI systems in production, including monitoring and debugging for reliability.
• Collaborate with product and design to translate customer needs into technical solutions.

Skills

Software engineering

Backend development

AI/ML features

Python/Go/TypeScript

APIs (REST/gRPC)

Cloud concepts

Kubernetes

Kafka

Team collaboration

Tools

Kubernetes

AWS/GCP

REST/gRPC

Kafka

Job description

American Express in Phoenix is seeking an AI Engineer III to contribute to production agentic AI systems that handle real financial data and serve real customers. You will design, build, and ship AI-powered features alongside experienced engineers, product managers, and designers in a regulated, customer-facing environment.

You will deepen your expertise in LLMs, agentic systems, and production AI engineering, writing production code and participating in system design and operations after launch