Machine Learning Engineer I in London

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. We’re here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued.

We are looking for a Machine Learning Engineer I to join our Product AI Engineering team. You will help us design, build, and optimize intelligent systems. This is not just a modeling role; you'll own the full lifecycle: from raw data to deployed models/compound systems to measurable business impact. If you're passionate about solving real-world problems at scale, collaborating across disciplines, travel, and making AI systems that truly matter - this is for you.

What You’ll Do:

• Utilize AI techniques, including machine learning, deep learning, generative AI, and statistical modeling, to develop and implement solutions.
• Apply strong coding skills, analytical abilities, and innovative thinking.
• Employ statistical and data science methods to make data-driven decisions.
• Manipulate large data sets for business insights and drive actionable solutions.
• Utilize appropriate methods and approaches to develop practical solutions for the business.
• Structure work, frame issues, and produce analyses/ML models/Compound AI systems.
• Communicate complex data science topics in a clean & simple way to multiple partners and senior leadership.
• Collaborate with a global team across different continents to achieve project goals.

What We’re Looking For:

• 2+ years of experience with preferably a master’s degree or equivalent.
• Proven knowledge of AI techniques with an excellent grasp of statistical concepts and methods.
• Good understanding of LLMs, guardrails, RAG, agentic AI.
• Strong passion for solving problems and finding patterns and insights within structured and unstructured data.
• Strong knowledge of hands-on practice in Python.
• Familiarity with popular machine learning libraries and frameworks such as scikit-learn, Hugging Face, PyTorch and TensorFlow.
• Experience with MLFlow, AWS SageMaker and Bedrock is preferred.
• Familiar with MLOps concept, SQL and PySpark.
• Experience with feature stores, machine learning models as service, and monitoring dashboards is a plus.
• Some infrastructure knowledge (AWS, Kubernetes) and cost-awareness is a plus.

Location: London, United Kingdom

The #TeamGBT Experience:

• Flexible benefits tailored to each country starting the day you do, including health and welfare insurance plans, retirement programs, parental leave, adoption assistance, and wellbeing resources.
• 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 20,000 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.

All applicants will receive equal consideration for employment without regard to age, sex, gender, pregnancy, race, color, citizenship, religion, disability, or any other class or characteristic protected by law.

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.

If you're passionate about our mission and believe you'd be a phenomenal addition to our team, don't worry about "checking every box;" please apply anyway. You may be exactly the person we're looking for!