Staff Data Scientist (AdTech, AI)

TL;DR

Staff Data Scientist (AdTech, AI): Driving transformative innovation in AI-powered ranking and bidding systems for digital advertising with an accent on designing and deploying advanced models. Focus on redefining auction dynamics, maximizing advertiser ROI, and elevating advertising intelligence capabilities at scale.

Location: Hybrid in Berlin, Germany (2 days a week in the office)

Company

hirify.global is a pioneering local delivery platform, operating in over 70+ countries worldwide and one of Europe’s largest tech platforms headquartered in Berlin.

What you will do

• Drive transformative innovation in AI-powered ranking and bidding systems for digital advertising.
• Lead the creation of advanced models and strategies that redefine auction dynamics, maximise advertiser ROI, and deliver exceptional user experiences.
• Elevate advertising intelligence capabilities, setting new industry benchmarks while shaping the future of data-driven decision-making at scale.

Requirements

• World-class AI and ML expertise, including deep research authority in ranking models, personalisation, relevance, and multi-objective optimisation under uncertainty.
• Expertise in bidding algorithms, reinforcement learning (RL), and the ability to invent or adapt novel ML architectures at massive scale.
• Deep operational knowledge of AI frameworks (TensorFlow, PyTorch) and their application in mission-critical, ultra-low-latency real-time decision systems.
• Comprehensive and deep-seated understanding of ad auctions, ad exchange platforms, and macro-economic dynamics within the programmatic advertising space.
• Track record of using probabilistic modelling, causal inference, and statistical rigour to validate assumptions and inform the design of new auction mechanisms and platform policies.
• Advanced proficiency in Python, SQL, and designing robust, end-to-end data workflows for large-scale behavioral data.
• Demonstrated track record of successfully designing, building, and deploying multiple generations of large-scale AI systems that have delivered measurable business outcomes.
• Experience defining and driving the organizational-wide technical strategy for Data Science and ML, influencing the roadmaps of multiple Engineering and Product teams.

Nice to have

• Expertise in econometrics or game theory as applied to advanced auction and pricing strategies.
• Major Contributions to open-source AI tools or publications in top-tier machine learning conferences (e.g., NeurIPS, ICML, KDD).
• Deep familiarity with Transformer-based architectures or Graph Neural Networks for modeling complex user-item and market interactions.

Culture & Benefits

• Hybrid working model with 2 days a week for face-to-face connection and collaboration in the Berlin campus.
• 27 days holiday with an extra day on 2nd and 3rd year of service.
• €1,000 Educational Budget, Language Courses, Parental Support and access to the Udemy Business platform.
• Health Checkups, Meditation, Gym & Bicycle Subsidy.
• Employee Share Purchase Plan, Sabbatical Bank, Public Transportation Ticket Discount, Life & Accident Insurance, Corporate Pension Plan.
• Digital Meal Vouchers, Food Vouchers, Corporate Discounts.