Senior Agentic AI Engineer - LLM-Powered Fintech

American Express; Phoenix (AZ); On-site; USD 150,000 - 230,000; Full time

Job summary

American Express is seeking a Senior AI Engineer II – Agentic AI to turn complex problems into production-grade agentic systems that operate on real financial data and serve millions of customers worldwide. You will shape solutions with product and design, build and ship production code, and own what you deliver after launch.

The role spans customer-facing LLM-powered features, agentic workflows, and internal AI capabilities, with a strong emphasis on reliability, security, and compliance in a

Qualifications

• 8+ years of software engineering experience, including meaningful production experience with LLMs or applied ML systems.
• A track 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.
• Strong sense of ownership and sound technical judgment.
• Comfort operating with ambiguity and turning it into shipped reliable product.
• A strong product mindset and customer orientation.

Responsibilities

• Design, build, and ship LLM-powered and agentic product features that change how customers manage their finances.
• Build agentic AI systems that reason over context, invoke tools, take real actions, and recover gracefully from failure.
• Architect and implement 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

AI systems

Production-grade

Backend APIs

LLM tooling

Agentic development

Product mindset

Tools

React

Kotlin

TypeScript

CircleCI

iOS/Swift

Android

Job description

American Express is seeking a Senior AI Engineer II – Agentic AI to turn complex problems into production-grade agentic systems that operate on real financial data and serve millions of customers worldwide. You will shape solutions with product and design, build and ship production code, and own what you deliver after launch.

The role spans customer-facing LLM-powered features, agentic workflows, and internal AI capabilities, with a strong emphasis on reliability, security, and compliance in a