At a Glance
- Tasks: Design and build innovative AI systems that transform financial management for customers.
- Company: Join American Express, a leader in financial services with a focus on innovation.
- Benefits: Enjoy competitive salaries, flexible work options, and comprehensive health benefits.
- Other info: Great career growth opportunities and a supportive culture await you.
- Why this job: Make a real impact by developing cutting-edge AI solutions in a dynamic environment.
- Qualifications: Experience in software engineering and applied ML systems is essential.
The predicted salary is between 80000 - 98000 £ per year.
The Enterprise Technology Services organization partners with all areas of American Express to drive growth and innovation while maintaining trust, efficiency, and security.
This role focuses on building and shipping agentic AI systems that operate responsibly at scale within a regulated financial environment.
Technical Environment
Development occurs in a modern, enterprise‑scale environment with a strong emphasis on agentic AI.
The stack includes Python, Go, Type Script, AWS and/or GCP, Kubernetes, REST, g RPC, event‑driven architectures, and Kafka.
- Core Engineering Stack
- Languages: Python, Go, Type Script
- Cloud and infrastructure: AWS and/or GCP, Kubernetes
- APIs and services: REST, g RPC
- Distributed systems: event‑driven architectures, including Kafka
- Agentic AI and ML
- Commercial and open‑source LLMs integrated into agentic workflows
- Tooling for agent orchestration, retrieval‑augmented generation, vector storage, and evaluation
- Strong schema, validation, and state management practices
- AI‑Assisted Development
- Fluency with AI‑assisted and agentic development workflows for design, implementation, testing, debugging, and refactoring
- Thoughtful use of these tools while maintaining production‑quality engineering standards
- All systems are built to meet high standards for reliability, security, and auditability, reflecting the responsibility of deploying autonomous AI in a financial services environment
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; focus on customer outcomes as well as technical execution
- Minimum Qualifications
- Proven 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
- 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
Employment eligibility to work with American Express in the UK is required as the company will not pursue visa sponsorship for these positions.
Benefits
- Competitive base salaries
- Bonus incentives
- Support for financial‑well‑being and retirement
- Comprehensive medical, dental, vision, life insurance, and disability benefits (depending on location)
- Flexible working model with hybrid, onsite or virtual arrangements depending on role and business need
- Generous paid parental leave policies (depending on your location)
- Free access to global on‑site wellness centers staffed with nurses and doctors (depending on location)
- Free and confidential counseling support through our Healthy Minds program
- Career development and training opportunities
Offer of employment with American Express is conditioned upon the successful completion of a background verification check, subject to applicable laws and regulations.
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Senior AI Engineer II - Agentic AI in Burgess Hill employer: American Express
American Express is an exceptional employer that fosters a culture of innovation and collaboration, empowering employees to thrive in their careers. With a strong commitment to holistic well-being, the company offers competitive salaries, comprehensive benefits, and flexible working arrangements, ensuring that team members can balance their personal and professional lives effectively. The opportunity for career development and mentorship within a globally recognised financial services leader makes American Express an attractive choice for those seeking meaningful and rewarding employment in the heart of the UK.
