Senior Data Scientist (AdTech)

TL;DR

Senior Data Scientist (AdTech): Developing and optimizing large-scale ML models for CTR prediction and online learning within a high-traffic advertising platform with an accent on high-dimensional embeddings and real-time model updates. Focus on bridging the gap between ArXiv research and production-ready features to optimize ad delivery at scale.

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

Company

hirify.global is a leading omnichannel advertising platform leveraging predictive AI to connect quality media and brand creative globally.

What you will do

• Innovate in AdTech research, focusing on CTR prediction, online learning regimes, and high-dimensional embeddings.
• Collaborate with cross-functional teams to identify research gaps and translate them into production-ready features.
• Lead the end-to-end ML lifecycle from reading ArXiv papers to A/B testing and live performance monitoring.
• Conduct dedicated deep-work sessions to test unconventional hypotheses and new algorithmic approaches.

Requirements

• Advanced degree (MSc/PhD) in a quantitative field or equivalent industry experience.
• 4–5 years of experience deploying ML algorithms into high-throughput online environments.
• Strong software engineering fundamentals to ensure models fit effectively into the code stack.
• Ability to critique scientific papers and implement their core findings effectively.
• Strong communication skills to explain complex transformer-based systems to diverse stakeholders.
• Must be based in Paris, France to comply with the hybrid work requirement (3 days/week in office).

Culture & Benefits

• Continuous investment in skills through in-house and external training and internal mobility.
• Work-life balance priority with 22 days off per year.
• Hybrid work arrangement (3 days per week in the office) and remote work subsidy.
• Premium work equipment and a supportive, diverse, and inclusive environment.
• Access to Employee Resource Groups focused on environmental, women empowerment, and DEI initiatives.