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Machine Learning Engineer

London💼 Full-time🗓 2026-09-29

Core

Build and maintain high-frequency ML infrastructure for a real-time advertising auction environment, predicting user characteristics and optimizing advertiser outcomes.

Role type

Machine Learning Engineer (Real-time Systems)

Builds

High-frequency ML systems for real-time ad auctions

Domain

Digital Advertising / Real-time Bidding

Deliverable

production ML models

Required skills

Python, Java, Probability, Statistics, Hypothesis Testing, Classification, Regression, Clustering, Ranking, NLP, LLMs, PyTorch, Scikit-learn, XGBoost, Pandas, NumPy

Preferred skills

Distributed system design, Concurrent algorithms, Data structures, Software engineering

Responsibilities

Design, code, test, and debug ML applications for large-scale global systems; Run ML experiments to test new modeling ideas; Collaborate with senior scientists to iterate on models; Write clean, efficient, and maintainable code; Identify performance bottlenecks and optimize system components; Keep up to date with developments in machine learning.

Seniority

Junior (0-2 years experience)

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