Principal ML Engineer
Job description
Lead the technical direction of Adikteev's Machine Learning team, designing and shipping predictive models and real-time inference systems for programmatic advertising. The role combines applied research, ML platform engineering, and mentoring senior ML engineers.
At a glance
- Employment
- Full-time · Employee (employment agreement)
- Work mode
- Hybrid · France
- Pay
- EUR 130,000 – 150,000 / year
What you'll do
- Set technical direction for the Machine Learning team
- Design and train predictive models for CTR, CR, VTA, bid shading, and auction-win probability across display and video inventory
- Scale the ML platform — feature stores, training pipelines, model versioning, A/B experimentation — to support multiple model families running in production simultaneously
- Drive sub-10ms inference at high QPS through model optimization (ONNX), efficient serving, and latency-aware architecture decisions
- Own end-to-end ML workflows from data ingestion through monitoring: drift detection, shadow scoring, A/B tests, and automated retraining triggers
- Drive design reviews, ADRs, and mentoring of senior+ ML engineers
- Translate business objectives into technical strategies
- Work closely with Tech Reporting and Analytics to define ML KPIs, instrument experiments, and communicate model performance to stakeholders up to Comex level
- Design and set up a neural network for adtech from the ground up, taking it from prototype to production in the bidding stack
What we're looking for
- 8+ years of industry ML engineering experience, with 3+ years building and owning production ML systems at scale
- Hands-on adtech experience — programmatic advertising (RTB/DSP), mobile attribution (MMP ecosystem, SKAdNetwork, Privacy Sandbox), or real-time bidding — alongside deep expertise in recommender systems and/or LTV/churn modeling
- Strong command of the modern ML stack: Python, PyTorch or TensorFlow, scikit-learn, MLflow or Weights & Biases, Spark or Flink for feature engineering
- Experience with real-time serving infrastructure: Triton, TorchServe, Ray Serve, or custom low-latency gRPC services
- Solid software engineering fundamentals — write production-grade, reviewable code and care about system reliability
- Track record of delivering value incrementally — shipping working software in small, frequent increments rather than large multi-quarter projects
- Clear, concise communicator who can translate model performance into business impact for non-technical audiences
- Applicants are required to maintain residency and be legally authorized to work in France or the European Union
Your team
Machine Learning team
Full ownership of Adikteev's ML ecosystem; building and maintaining the systems that power the core of the business at massive scale, operating with a strong product ownership mindset at the intersection of research and production.
Benefits
- Competitive Salary
- Performance-based Quarterly bonus with transparent KPIs
- Longevity bonus every 2 years
- 4 1/2 days work week (Fridays afternoon off)
- RTT
- Mental Health support
- Flexible remote working policy
- Regular team-life event / activity
- Inclusive parental leave Policy
How to get hired
- 1HR interview with Claire, Senior Talent Acquisition Partner
- 2Technical test to complete remotely
- 3Technical interview with Gwennaëlle, Staff ML Engineer and Pedro, Senior ML Engineer
- 4Manager interview with Cédric, CTO
- 5Comex interview
Apply
Direct apply at Adikteev
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About Adikteev
AdTech company that helps mobile app publishers grow their revenue through targeted advertising
Adikteev is an AdTech company that helps mobile app publishers grow their revenue through targeted advertising, delivering personalized ads that drive users to install an app or re-engage with one they've stopped using. Clients are mostly mobile gaming leaders but also span e-commerce, on-demand services, and entertainment apps. Recognized for 10+ years as one of the top mobile retargeting platforms, Adikteev operates globally from Paris, San Francisco, Barcelona and Seoul and has grown to over 120 employees.
Key facts
- over 120 employees
- AdTech
- Recognized for 10+ years as one of the top mobile retargeting platforms
- Operates globally from Paris, San Francisco, Barcelona and Seoul
- 18-nationality team
- 4.5-day work week
- Consistently recognized as a great place to work
What they value
- Inclusion
- Transparent compensation practices