Senior Data Scientist (AdTech)

TL;DR

Senior Data Scientist (AdTech): Developing and optimizing large-scale predictive AI models for ad delivery with an accent on CTR prediction, online learning, and high-dimensional embeddings. Focus on bridging research and engineering by deploying ML algorithms into high-throughput production environments and conducting end-to-end model lifecycle management.

Location: Must be based in Paris, France (Hybrid: 3 days per week in the office)

Company

hirify.global is a leading omnichannel advertising platform that leverages predictive AI technology to connect quality media, brand creative, and context-driven addressability for global advertisers.

What you will do

• Innovate at scale by researching and implementing advanced ML techniques for CTR prediction and online learning.
• Collaborate with cross-functional teams to translate research findings into production-ready features.
• Lead the end-to-end model lifecycle, from paper analysis to A/B testing and live performance monitoring.
• Dedicate time to deep-work sessions to test unconventional hypotheses and new algorithmic approaches.
• Ensure models integrate seamlessly into the existing software stack.

Requirements

• Advanced degree (MSc/PhD) in a quantitative field or equivalent industry experience.
• 8+ years of experience in applied research, specifically deploying ML algorithms into high-throughput online environments.
• Strong software engineering fundamentals with the ability to understand how models fit into the code stack.
• Ability to critique scientific methodology and implement core findings effectively.
• Excellent communication skills to explain complex systems to technical and non-technical stakeholders.
• Must be based in Paris or able to work in a hybrid model (3 days/week in office).

Culture & Benefits

• Continuous investment in career development through in-house and external training.
• Hybrid work policy with 3 days per week in the office.
• 22 days off per year.
• Focus on employee well-being with premium work equipment and remote work subsidies.
• Collaborative, diverse, and global work environment.