Machine Learning Engineer

As a Machine Learning Engineer, you'll join our Personalize team, helping shape and build the products that let our customers personalise messages across every digital touchpoint. You'll work with text data and with cutting-edge technologies including Large Language Models (LLMs), bringing Accessible Intelligence to our customers across both Personalize and Optimove's overall platforms.

This is a role for an engineer who's ready to own meaningful, medium-sized pieces of our personalisation roadmap end-to-end - from problem framing through to deployment and monitoring - and trusted to do so with minimal oversight. It's not solo delivery: you'll be working closely with a dynamic team spanning ML, MLOps and software engineering, and should be happy to contribute at every level, from early-stage research through to production support.

Exposure to a wide range of ML domains, including large-scale search, ranking, Natural Language Processing, hybridisation, classification and text data processing.

Working with modern ML technologies, including LLMs, to enhance our products.

Fully real-time architecture for data processing, model development and deployment.

Deploying and enhancing ML frameworks, optimising for inference and training/retraining cycles.

Online testing of models with live data, using our proprietary A/B/N testing technology to see quickly what performs well.

A supportive, collaborative team spanning ML, MLOps and software engineering, where rapid experimentation is the norm.

Dedicated time to research new methods, build proofs-of-concept, and ship to production quickly when they work.

Everyday use of modern AI coding assistants (e.g. Claude) to speed up experimentation and review.

This role sits on the in-role path towards Senior Machine Learning Engineer. As you grow, you'll deepen your expertise in our core ML stack, take on end-to-end ownership of larger features, represent the team in cross-functional planning with MLOps and software engineering.

Optimove offers a vibrant, people‑first culture where innovation, ownership, and continuous learning shape everything we do. Our UK team enjoys a modern office with a hybrid work model, daily lunch budget when onsite, and a fully stocked kitchen, along with a wide range of social events throughout the year. We’re committed to helping our people grow in an inclusive, supportive workplace recognised as one of the UK’s Best Workplaces in Tech and for Wellbeing.

Optimove is an equal opportunity employer. We consider all qualified applicants fairly, without regard to race, ethnicity, gender, age, religion, disability, sexual orientation, or any other characteristic protected by applicable law. If you require any adjustments during the recruitment process, please let us know. By submitting this application, you agree that Optimove will process your personal data in accordance with applicable data protection laws, including GDPR. For details, see our Privacy Policy .