Senior Machine Learning Engineer

The role

You will design and deliver machine learning models at scale within cross-functional teams. You will own the end-to-end machine learning delivery lifecycle and shape technical direction for your area.

What you will do

• Work within cross-functional teams alongside data scientists, software engineers, data engineers and product managers
• Design and deliver machine learning models at scale
• Own the end-to-end machine learning delivery lifecycle
• Shape technical direction for your area
• Partner with and influence stakeholders across the business
• Build tools, frameworks and libraries to accelerate ML product delivery
• Provide technical mentorship and support to less experienced engineers
• Take an active role in the AI and ML community

Required qualifications

• An advanced degree in Computer Science, Mathematics or a related quantitative discipline, or equivalent experience
• Considerable experience productionising machine learning models
• Strength in an area such as predictive modelling, classification, regression or recommendation systems
• Strong proficiency in Python and open-source data libraries such as Pandas, NumPy and Scikit-learn
• A solid grounding in statistical methodologies
• Data extraction, manipulation and feature engineering techniques
• Experience with Spark, agile delivery methods and CI/CD practices
• Familiarity with DevOps and MLOps tools and practices, such as Docker, Terraform and MLFlow
• Confidence influencing and communicating with stakeholders across technical and non-technical teams

Nice to have

• Exposure to cloud infrastructure
• NLP or large language models (such as fine-tuning, RAG or agents)
• Graph technologies
• Experience in the transport sector
• Experience with geographic information systems (GIS)

Benefits

• Private healthcare & dental insurance
• Generous work from abroad policy
• 2-for-1 share purchase plans
• EV Scheme
• Extra festive time off
• Family-friendly benefits
• Clear career paths
• Transparent pay bands
• Personal learning budgets
• Regular learning days

About the company

Trainline is Europe's leading independent rail platform. It helps millions of travellers find and book rail and coach journeys through its app, website, and partner channels.