Senior Data Scientist – Machine Learning & Advertising

Our requirements

• At least 5 years of hands-on experience in designing and optimizing Deep Learning models for production use cases.
• Expertise with frameworks such as PyTorch or TensorFlow, complemented by practical skills in Pandas and NumPy.
• Advanced SQL proficiency, including analytical SQL in large-scale environments (e.g., BigQuery).
• Strong experience with cloud platforms, preferably Google Cloud Platform, including Vertex AI and Vertex Pipelines.
• Proven ability to lead full lifecycle model development, from problem framing to deployment and monitoring.
• Solid engineering foundations, including writing production-quality Python code, with familiarity with CI/CD practices.
• Excellent communication skills in English (at least B2 level) and a collaborative mindset.
• Good command of English (minimum B2 level).
• Only candidates with an existing legal right to work in the European Union will be considered for this role.

Optional

• Experience developing ML models for low-latency online applications.
• Background in advertising or marketing domains.
• Proven experience in predicting business events such as clicks and conversions (CTR/CVR modeling).
• Proficiency in traditional ML techniques like Gradient Boosted Trees.
• Practical experience utilizing AI-assisted coding tools to boost engineering productivity.

Your responsibilities

• Drive the design, refinement, and evaluation of ML scoring models (e.g., CTR, CVR, RoAS) crucial to core bidding logic.
• Architect complex model strategies integrating user, product, and placement signals for high-throughput, low-latency environments.
• Collaborate with engineering and business teams to translate strategic objectives into measurable modeling outcomes and technical roadmaps.
• Provide technical leadership and ensure quality standards across Data Science workstreams, aligning with production best practices.
• Lead end-to-end model development—from problem framing and feature engineering to evaluation and deployment.
• Mentor fellow data scientists, elevating modeling standards and promoting knowledge sharing within the team.

About the project

This is how we organize our work

This is how we work on a project

• Continuous Deployment
• Continuous Integration

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What we offer

• Stable and long-term cooperation with very good conditions.
• Enhance your skills and develop your expertise in the financial industry.
• Work on the most strategic projects available in the market.
• Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years.
• Participate in Social Events, training, and work in an international environment.
• Access to attractive Medical Package.
• Access to Multisport Program.
• Access to Pluralsight.
• Flexible hours.

Benefits

• sharing the costs of sports activities
• private medical care
• remote work opportunities
• flexible working time
• fruits
• integration events
• corporate gym
• saving & investment scheme
• no dress code
• coffee / tea
• drinks
• christmas gifts
• birthday celebration
• sharing the costs of a streaming platform subscription
• access to +100 projects
• access to Pluralsight

Recruitment stages

• 1.
  online interview
• 2.
  online interview

ITDS Polska Sp. z o.o.