Sr AI Engineer II - Enterprise Architecture
Job Description
At American Express Technology, you will help build production-grade, agentic AI systems that work with real financial data and support real customers. This role emphasizes end-to-end ownership, autonomy, and delivering safe, efficient engineering outcomes inside a regulated financial environment.
The position is based in Phoenix, AZ (onsite) and is offered with a salary range of USD 123,000 - 215,250 per year. Experience level: 5+ years.
What you’ll do
- Translate complex, ambiguous challenges into production-grade agentic systems that operate on real financial data, serve real customers, and meet real regulatory requirements.
- Own delivery end to end, partnering with product and design to shape solutions, build and ship production code, and remain accountable for outcomes after launch.
- Deliver customer-facing LLM-powered features, build agentic systems that automate financial workflows, and create internal AI capabilities that help other engineers build with AI safely and efficiently.
- Operate with autonomy and sound judgment, pushing the technical envelope while working within the realities of financial regulation.
What you bring
- 5+ years of software engineering experience, including meaningful production experience with LLMs or applied ML systems.
- A proven record of shipping AI-powered or agentic systems that real users depend on.
- Strong engineering fundamentals across backend systems, APIs, data pipelines, and cloud infrastructure.
- Hands-on experience with modern LLM tooling and agentic patterns and architectures.
- Fluency with AI-assisted and agentic development workflows.
- A strong sense of ownership and technical judgment.
- Comfort operating with ambiguity and turning it into shipped, reliable product.
- A product mindset with customer orientation.
Preferred qualifications
- Experience building agentic systems in fintech or other regulated industries.
- Experience as a founding engineer or early technical contributor in high-growth environments.
- Demonstrated ability to ship technically complex systems in regulated contexts that customers actively rely on.
- Meaningful open-source contributions, particularly in AI or developer tooling.
- Depending on business unit requirements, the nature of the position, cost, and applicable laws, American Express may provide visa sponsorship for certain positions.
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