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Data Scientist III

Krakow💼 Full-time🗓 2026-06-30 → 2026-07-31

Core

Designing and operating high-scale ad marketplaces to deliver optimal value to publishers and advertisers.

Role type

Senior IC machine-learning engineer (advertising marketplaces)

Builds

Production-ready models and analyses for bidding, yield modeling, relevance, prediction, and experimentation at exchange scale.

Domain

Digital advertising, marketplace design, machine learning

Deliverable

production ML models

Required skills

applied machine learning, problem formulation, research, feature engineering, model validation, production monitoring, causal measurement, mentoring

Preferred skills

judgment in selecting methods for business problems at scale, carrying analytical work from ambiguity to production impact

Technologies

(none explicitly stated)

Responsibilities

Own medium-to-large data science projects end-to-end, build production-ready models, partner with product and engineering to ship solutions, mentor junior scientists, act as a strong technical voice

Seniority

Senior, hands-on IC

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