Senior AI Platform Engineer

Amex GBT is a place where colleagues find inspiration in travel as a force for good and through their work can make an impact on our industry. Were here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued.

American Express Global Business Travel (Amex GBT) Egencia is redefining the future of business travel through AI-powered products and data-driven intelligence. As the worlds leading B2B travel platform we operate at a scale where the engineering decisions you make reach millions of travelers and thousands of enterprise clients globally.

We are looking for a Senior AI Platform Engineer to help us design build and scale the foundation that powers our next generation of AI and ML capabilities from real-time inference and GenAI applications to the MLOps pipelines and feature infrastructure that underpin them. Youll work at the intersection of platform engineering and applied AI partnering with data scientists product managers and applied researchers to turn ideas into production-grade systems.

What youll do

• Architect and evolve the AI platform: Design scalable resilient infrastructure for model training evaluation deployment and monitoring spanning both batch and real-time workloads.
• Lead GenAI platform initiatives: Build and maintain internal tooling for LLM orchestration prompt management RAG pipelines guardrails and evaluation frameworks (e.g. LLM-as-judge red-teaming workflows).
• Drive MLOps maturity: Own and improve CI/CD for ML models automated retraining pipelines model versioning A/B experimentation and drift/performance monitoring.
• Build for scale and reliability: Apply software engineering best practices clean code testing observability SLOs to ML systems that run in production at enterprise scale.
• Shape the feature ecosystem: Develop and maintain feature stores and data pipelines that serve both online and offline ML use cases with a focus on low-latency access and data quality.
• Mentor and uplift the team: Act as a technical anchor for junior and mid-level engineers; lead code reviews architecture discussions and engineering standards.
• Collaborate cross-functionally: Partner with data scientists AI engineers product teams and enterprise architects to translate business requirements into robust platform capabilities.
• Contribute to north star thinking: Identify opportunities to improve developer experience reduce toil and build forward-looking platform capabilities that keep Amex GBT ahead of the curve.

What were looking for

• Experience: 8 years of software engineering experience with at least 3 years focused on ML/AI platform or MLOps engineering. Bachelors in Computer Science Engineering or equivalent; Masters a plus.
• Platform engineering depth: Strong proficiency in Python and/or Java; experience building and operating production AI systems end-to-end.
• Cloud & infrastructure: Hands-on AWS expertise (Bedrock SageMaker EKS S3 Lambda Kinesis Glue or equivalents); comfortable with Kubernetes Terraform and modern infrastructure-as-code practices.
• MLOps tooling: Practical experience with ML orchestration and experiment tracking tools (e.g. MLflow Kubeflow Airflow Metaflow or similar); CI/CD for AI workflows.
• Gen AI foundations: Working knowledge of LLM integration patterns RAG function calling prompt engineering context management guardrails and LLM observability tooling.
• Agentic AI architecture: Demonstrated experience designing and building agentic systems including tool-use multi-agent orchestration frameworks (e.g. LangGraph AutoGen CrewAI) memory management strategies and human-in-the-loop patterns for safe and reliable agent behavior in production.
• Feature & data platform: Familiarity with feature stores (e.g. Feast Tecton SageMaker Feature Store) and streaming data patterns (Kafka Kinesis); strong understanding of data modeling and access patterns for ML.
• Observability & quality: Experience with model monitoring (data drift concept drift performance degradation). Solid grounding in testing strategies for AI systems.
• Soft skills: Strong communicator capable of translating complex technical trade-offs to non-engineering stakeholders; collaborative opinionated but open and energized by working at the frontier of AI.

Location

London United Kingdom

The #TeamGBT Experience

Work and life: Find your happy medium at Amex GBT.

• Flexible benefits are tailored to each country and start the day you do. These include health and welfare insurance plans retirement programs parental leave adoption assistance and wellbeing resources to support you and your immediate family.

• Travel perks: get a choice of deals each week from major travel providers on everything from flights to hotels to cruises and car rentals.

• Develop the skills you want when the time is right for you with access to over 20000 courses on our learning platform leadership courses and new job openings available to internal candidates first.

• We strive to champion Inclusion in every aspect of our business at Amex GBT. You can connect with colleagues through our global INclusion Groups centered around common identities or initiatives to discuss challenges obstacles achievements and drive company awareness and action.

• And much more!

All applicants will receive equal consideration for employment without regard to age sex gender (and characteristics related to sex and gender) pregnancy (and related medical conditions) race color citizenship religion disability or any other class or characteristic protected by law.

Click Here for Additional Disclosures in Accordance with the LA County Fair Chance Ordinance.

Furthermore we are committed to providing reasonable accommodation to qualified individuals with disabilities. Please let your recruiter know if you need an accommodation at any point during the hiring process. For details regarding how we protect your data please consult the Amex GBT Recruitment Privacy Statement.

What if I dont meet every requirement If youre passionate about our mission and believe youd be a phenomenal addition to our team dont worry about checking every box; please apply anyway. You may be exactly the person were looking for!

Required Experience:

Senior IC

Employment Type : Full-Time
Experience: years
Vacancy: 1