ML Engineer I: Build AI Systems & Insights

Global Business Travel Group; City of Westminster; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Flexible benefits starting day one

Health and welfare insurance plans

Parental leave and adoption assistance

Wellbeing resources

Job summary

American Express Global Business Travel (Amex GBT) is seeking a Machine Learning Engineer I to join our Product AI Engineering team. You will design, build, and optimize intelligent systems, owning the full lifecycle from raw data to deployed models with measurable business impact.

You’ll collaborate across disciplines, travel, and contribute to AI systems that matter, while supporting an inclusive and collaborative culture where your voice is valued.

Qualifications

• 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 ML 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 are a plus.

Responsibilities

• 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.

Skills

AI techniques

Statistical concepts

Python

Data science methods

Communication to leadership

Education

Master's degree or equivalent

Tools

scikit-learn

Hugging Face

PyTorch

TensorFlow

MLFlow

AWS SageMaker

Bedrock

SQL

PySpark

Kubernetes

Job description

American Express Global Business Travel (Amex GBT) is seeking a Machine Learning Engineer I to join our Product AI Engineering team. You will design, build, and optimize intelligent systems, owning the full lifecycle from raw data to deployed models with measurable business impact.

You’ll collaborate across disciplines, travel, and contribute to AI systems that matter, while supporting an inclusive and collaborative culture where your voice is valued.