ML Engineer I: Build Scalable AI in Production

American Express Global Business Travel; Greater London; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Flexible benefits

Travel perks

Access to learning platform

Job summary

American Express Global Business Travel is seeking a Machine Learning Engineer I in London to design, build, and deploy AI systems that drive measurable business impact. You will own the full lifecycle from data to deployed models, collaborating with a global Product AI Engineering team and stakeholders across disciplines.

The role requires 2+ years of ML experience, strong Python, and familiarity with LLMs, ML libraries, and MLOps concepts.

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 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 are a plus.

Responsibilities

• Utilize AI techniques to develop and implement solutions.
• Apply strong coding skills and analytical abilities to build scalable models.
• Use statistical methods to drive data-driven decisions.
• Manipulate large data sets for business insights and solutions.
• Develop practical, business-oriented AI systems and models.
• Frame issues and produce analyses/ML models for stakeholders.
• Communicate complex data science topics clearly to partners and leadership.
• Collaborate with a global team to achieve project goals.

Skills

Python programming

LLMs

RAG

Agentic AI

scikit-learn

Hugging Face

PyTorch

TensorFlow

MLFlow

AWS SageMaker

Bedrock

PySpark

SQL

Kubernetes

AWS

Education

Master’s degree or equivalent

Tools

AWS SageMaker

Bedrock

MLFlow

Hugging Face

PyTorch

TensorFlow

scikit-learn

Kubernetes

Job description

American Express Global Business Travel is seeking a Machine Learning Engineer I in London to design, build, and deploy AI systems that drive measurable business impact. You will own the full lifecycle from data to deployed models, collaborating with a global Product AI Engineering team and stakeholders across disciplines.

The role requires 2+ years of ML experience, strong Python, and familiarity with LLMs, ML libraries, and MLOps concepts.