Location:
Paris (Remote / Hybrid
- Fully Remote or 2 Days in the Office) THE COMPANY This profitable French AdTech scale-up is transforming digital advertising through machine learning. By building AI-powered technology that determines which users are most likely to engage with an advert, they help leading mobile apps drive customer acquisition and re‑engagement through highly targeted advertising. You’ll be joining a highly technical engineering team, working directly alongside the CTO to shape the future of machine learning across the business. As a Principal Machine Learning Engineer, you'll define the technical direction of large-scale production machine learning systems while remaining hands‑on throughout the full model lifecycle. This is an individual contributor leadership role focused on delivering complex technical projects rather than managing people. You'll lead end‑to‑end machine learning initiatives across recommendation systems, audience targeting, bidding optimisation and customer lifecycle modelling,
partnering closely with senior engineering and business stakeholders to translate commercial objectives into production‑ready AI solutions. The role combines technical strategy, platform engineering and applied machine learning within a high‑scale real‑time environment. Extensive experience building and deploying production machine learning systems at scale Experience building robust MLOps platforms including model monitoring, automated retraining and production deployment Excellent Python and modern machine learning framework experience (PyTorch, TensorFlow or similar) Strong software engineering and distributed systems knowledge Ability to communicate complex technical concepts to senior stakeholders PhD in a STEM discipline is advantageous Fully remote working or hybrid (2 days per week if based near an office) ~ Technical interview and assessment review with senior ML engineers ~
📌 Principal Machine Learning Engineer (España)
🏢 Harnham - Data and Analytics Recruitment
📍 España
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