Senior Data Scientist, Performance - CTV & Ads AI

VIBE; Paris; Hybride; EUR 90 000 - 130 000; Plein temps

Avantages offerts par ce poste

Variable pay

Hybrid flexibility

Health insurance

Meal vouchers

Annual offsite

Tech Syncs

Résumé du poste

Vibe.co in Paris is seeking a Senior Data Scientist for Performance to own the prediction stack and data foundation. You will advance multi-task models predicting visits and purchases, and work with engineers to deploy scalable solutions.

This role involves designing features from raw signals, handling identity graphs, and optimizing for advertiser uplift with production-grade ML tooling like ONNX, Dagster, and Triton. Hybrid in Paris, strong Python and PyTorch are essential.

Qualifications

• Hands-on deep learning experience shipped in a professional environment.
• Strong Python skills, with PyTorch preferred (TensorFlow or JAX also fine).
• Experience diagnosing model failures: data leakage, bias, calibration, distribution shift.
• Ability to build algorithms from scratch and reason about what's happening under the hood.
• A track record of tying your modeling work to a specific business KPI you moved.

Responsabilités

• Own the Prediction Stack: Improve our unified multi-task model predicting visits, purchases, and other outcomes.
• Design shared representations so model heads learn from each other across sparse conversion funnels.
• Take ideas from exploration to production: dataset design, architecture, training, and deployment.
• Debug production models for gradient issues, convergence failures, drift, and regression.
• Partner with Performance engineers building the serving and bidding infrastructure.
• Design new features from raw signal, including household-level features from our identity graph.
• Prepare the modelling stack to absorb new, richer data sources.
• Optimize models for measurable advertiser uplift, not offline metrics.
• Ship changes to production, measure results, and adjust based on real outcomes.

Connaissances

Hands-on DL

Python

PyTorch

TensorFlow/JAX

Model debugging

Business KPI tie

Outils

ONNX export

Dagster

Triton

Description du poste

Vibe.co in Paris is seeking a Senior Data Scientist for Performance to own the prediction stack and data foundation. You will advance multi-task models predicting visits and purchases, and work with engineers to deploy scalable solutions.

This role involves designing features from raw signals, handling identity graphs, and optimizing for advertiser uplift with production-grade ML tooling like ONNX, Dagster, and Triton. Hybrid in Paris, strong Python and PyTorch are essential.