TL;DR

Machine Learning Engineer III (AI Engineering): Design and implement scalable machine learning systems for advertising optimization and personalization at global scale with an accent on large-scale ML pipelines, distributed computing, and real-time data processing. Focus on building and optimizing ML models, integrating them into production, and mentoring junior engineers.

Location: United Kingdom, London

Company

%hirify_global% powers global travel with innovative technology and a diverse, inclusive culture focused on career development and travel perks.

What you will do

Design, implement, and maintain large-scale ML pipelines for advertising use cases including feature engineering, model training, validation, and deployment.
Build real-time and batch data processing systems to support ad targeting and campaign optimization.
Collaborate with ML scientists and software engineers to integrate ML models into production systems.
Develop APIs and services enabling ML-driven advertising solutions across Expedia’s global platform.
Optimize Spark-based applications and ensure system reliability and performance.
Mentor junior engineers and contribute to knowledge sharing.

Requirements

Location: United Kingdom, London
Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent experience.
5+ years professional experience with Bachelor’s degree or 3+ years with Master’s degree.
Proven experience building and deploying ML pipelines in production.
Strong programming skills in Python and at least one other language (Scala or Java).
Expertise in Spark, distributed data processing, and ML libraries like PyTorch and TensorFlow.
Experience with cloud platforms (AWS, EMR, Kubernetes, Docker) and workflow tools (Airflow).
Strong software design and debugging skills.

Nice to have

Experience with real-time applications and streaming architectures.
Knowledge of advertising technology, e-commerce, or travel industry.
Hands-on experience with large-scale model training and GPU acceleration.

Culture & Benefits

Full benefits package including travel perks, generous time-off, and parental leave.
Flexible work model with modern offices.
Career development resources and inclusive culture.
Recognized as a Best Place to Work and award-winning culture.