Machine Learning Engineer, Experimentation

Company: Meta
Location: London, UK
Type:
Posted: Sep 7, 2026
Views: 5

Within Monetization (Ads), the Experimentation team is responsible for Measurement Statistics, Measurement Correctness, and Measurement Infrastructure, which underpins model-based experimentation. Every change to our models is deployed via an experiment and measured for improvements to quality (for our 3Bn+ monthly active users) and value (for millions of advertisers). We are at the heart of Meta's growth, driving significant step changes in a a domain operating at significant scale.

We are seeking an experienced and mathematically skilled Machine Learning Engineer to join our Experimentation team. This is a leadership hire focused on solving high-impact business challenges in experimentation. You will advance our approach on how we approach launch decisions, optimize launch models, and significantly reduce uncertainty in our experimentation. This role offers an opportunity to solve open and challenging problems and deliver a step change in ML Experimentation.

About the Company

Name: Meta

At Meta, we believe in impact and building a career where you’re challenged and valued in teams that are the best at what they do. Join us as we create and innovate the technologies of the future. We are advancing AI for a connected world. From developing category defining products to testing and launching wearables at global scale, there are many ways you can help us build the future of human connection and the technology that makes it possible.

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