Senior AI Engineer – Agentic FinTech Systems

American Express; Phoenix (AZ); On-site; USD 140,000 - 210,000; Full time

Job summary

American Express is seeking a Senior AI Engineer – Agentic AI within USCDT/AODT to turn complex problems into production‑grade agentic systems that operate on real financial data, serve real customers, and meet real regulatory requirements.

You will own end‑to‑end delivery, collaborating with product, design, and engineering, building LLM‑powered customer workflows, agent orchestration, and safe AI infrastructure in a fast‑moving, regulated fintech environment.

Qualifications

• 5+ years of software engineering experience, including production work with LLMs or applied ML.
• Proven track record shipping AI-powered or agentic systems used by real customers.
• Strong fundamentals in backend, APIs, data pipelines and cloud infrastructure.
• Hands-on experience with modern LLM tooling and agentic patterns.
• Fluency with AI-assisted development workflows.
• Strong ownership, judgment, and ability to navigate ambiguity.
• Customer-focused mindset with a product-driven approach.

Responsibilities

• Design, build, and ship LLM-powered agentic features for customer finances.
• Create agentic systems that reason over context, invoke tools, take real actions, and recover gracefully.
• Architect production-grade RAG pipelines over sensitive financial data, with strict requirements for correctness, auditability, and safety.
• Contribute to shared AI infrastructure, including LLM services, agent orchestration frameworks, and evaluation and monitoring tooling, that scales agentic development across Amex Technology.
• Own the systems you build in production, including reliability, latency, cost, and failure modes.
• Work closely with product and design partners; engineers in this role are expected to think in terms of customer outcomes, not just technical execution.

Skills

LLM / ML systems

Backend systems fundamentals

APIs + data pipelines

Cloud infrastructure (AWS/GCP)

Ownership & judgment

Product mindset

Tools

LLM tooling

Agent orchestration

Vector storage

Monitoring tooling

Job description

American Express is seeking a Senior AI Engineer – Agentic AI within USCDT/AODT to turn complex problems into production‑grade agentic systems that operate on real financial data, serve real customers, and meet real regulatory requirements.

You will own end‑to‑end delivery, collaborating with product, design, and engineering, building LLM‑powered customer workflows, agent orchestration, and safe AI infrastructure in a fast‑moving, regulated fintech environment.