Junior ML Engineer — Build AI for Smarter Travel (Hybrid)

Trainline; London (KY); Hybrid; USD 42,000 - 58,000; Full time

Benefits offered by this job

Private healthcare

Dental insurance

Work from abroad policy

2-for-1 share purchase plans

EV Scheme

Festive time off

Family-friendly benefits

Job summary

Trainline is hiring a Junior Machine Learning Engineer to join a high-performing, deeply technical community of Machine Learning Engineers, Data Scientists and Data Engineers who tackle complex problems by combining Trainline's rich datasets with cutting-edge algorithms.

You will be supported to grow your skills through hands‑on project work, close collaboration with more experienced colleagues, and a genuine culture of learning and development, while contributing to large-scale production

Qualifications

• Proficiency in Python and open-source data libraries.
• Background in CS/Math/Stats with relevant project experience.
• Experience building or supporting ML models or AI solutions.
• Interest in predictive modelling, NLP or recommendation systems.

Responsibilities

• Work within cross-functional teams alongside data scientists, software engineers, data engineers and product managers.
• Support the design and delivery of machine learning models and AI solutions that contribute to measurable impact for Trainline.
• Get involved across the machine learning delivery lifecycle, including data exploration, feature engineering, model selection and evaluation.
• Collaborate with stakeholders to help shape data products that make good use of Trainline's extensive datasets.
• Contribute to the tools, frameworks and libraries that help accelerate our ML and AI delivery and improve our workflows.
• Take part in our AI and ML community, sharing learning and building your experimentation skills alongside others.

Skills

Python

Pandas

NumPy

Scikit-learn

CI/CD

DevOps exposure

Education

Background in Computer Science, Mathematics, Statistics or similar quantitative discipline

Tools

Spark

Docker

Terraform

MLflow

Job description

Trainline is hiring a Junior Machine Learning Engineer to join a high-performing, deeply technical community of Machine Learning Engineers, Data Scientists and Data Engineers who tackle complex problems by combining Trainline's rich datasets with cutting-edge algorithms.

You will be supported to grow your skills through hands‑on project work, close collaboration with more experienced colleagues, and a genuine culture of learning and development, while contributing to large-scale production