Sr. Data Scientist I (AI)

TL;DR

Sr. Data Scientist I (AI): Developing bidding algorithms for display campaigns with an accent on automation framework and scalable product enhancements. Focus on solving scaling/engineering problems, working with massive datasets, and identifying business cases for algorithm improvement.

Location: Based in Paris (75008) – Champs-Elysées

Salary: Competitive package including fix salary; exact figures depend on profile.

Company

hirify.global is a global leader in AI-powered digital campaign activation.

What you will do

• Manage projects end-to-end, from proof-of-concept to production deployment and monitoring.
• Mentor junior developers, providing technical guidance and conducting code reviews.
• Work with massive datasets (billions of ad impressions/month) and millions of variables.
• Solve non-routine analysis problems not handled by off-the-shelf ML solvers.
• Solve challenging scaling/engineering problems as the system produces thousands of ML models per day.
• Work closely with commercial and customer success teams to identify business cases for algorithm improvement.

Requirements

• MS degree in applied mathematics (e.g., statistics, probabilities, operations research, machine learning).
• 3 to 5 years of professional experience in Data Science with Python/C++.
• Passion for automation and data-driven decisions.
• Proven professional experience in a SQL-like language.
• Experience deploying machine learning models into production environments.
• Previous experience leading technical projects or mentoring team members.

Culture & Benefits

• No repetitive tasks – everything needs to scale.
• Base decisions on data points.
• Young, hard-working team with huge ambitions.