Mid-Level Data Scientist – Machine Learning & Advertising Domains

Our requirements

• At least 3 years of experience in data science or related fields, with a focus on machine learning development and deployment.
• Proficiency in Python, PyTorch or TensorFlow, Pandas, and NumPy.
• Solid knowledge of SQL, preferably BigQuery or similar analytic SQL.
• Extensive experience working with public cloud platforms, specifically Google Cloud Platform (Vertex AI, Pipelines).
• Proven track record in designing and training deep neural networks in production environments.
• Academic background or extensive professional experience in STEM fields such as Computer Science, Mathematics, or Physics.
• Strong engineering skills, including writing reliable, testable, and documented code, with familiarity in CI/CD practices.
• English — communicative proficiency (spoken and written).
• Only candidates with an existing legal right to work in the European Union will be considered for this role.

Optional

• Experience developing low-latency ML models for real-time applications in online advertising.
• Background working within the advertising or marketing industry.
• Experience in predictive modeling for business metrics like CTR and CVR.
• Knowledge of Real-Time Bidding (RTB) algorithms and Demand Side Platforms.
• Familiarity with traditional machine learning techniques such as Random Forests or Gradient Boosted Trees.
• Practical experience using AI-assisted coding tools to boost productivity and code quality.

Your responsibilities

• Design and optimize machine learning models targeting key performance metrics such as CTR, CVR, and RoAS, embedded in core bidding logic and performance strategies.
• Architect complex models that fuse diverse data signals, including user, product, publisher, and placement features.
• Fine-tune models to meet the demands of high-throughput, low-latency online environments.
• Develop models for Dynamic Content Optimization within the DSP platform, including retargeting scenarios.
• Collaborate across teams to ensure model deployment, monitoring, and continuous improvement follow industry best practices.
• Write production-quality, tested, and well-documented Python code, leveraging CI/CD workflows and cloud infrastructure.

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.