Senior Machine Learning Researcher

RTB House · Remote · Poland only

Poland only4+ years requiredPublished 16 February 2026Ghost risk: high

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First recorded by Psst: 2 November 2026. Sign in with Google to continue to the employer. A free account is enough.

The 20-second read

Experience
4+ years required
Where you can live
Poland only
Languages
Polish
Skills and tools
python, java, machine learning, b2b

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Job details

Where you can work
Poland
Employment type
Not stated by the employer
Advertised pay
Not stated by the employer
Experience
4+ years required
Employer publication date
16 February 2026
First recorded by Psst
2 November 2026
Last checked at the source
3 November 2026

About the job

Location : Poland

We Are

RTB House is a global company that provides state-of-the-art marketing technologies for top brands and agencies worldwide. Its proprietary ad-buying engine is the first in the world to be powered entirely by Deep Learning algorithms, enabling advertisers to generate outstanding results and reach their goals at every stage of the funnel. As an  ML Researcher , you will be responsible for its development.

Founded in 2012, and now operating in 90+ markets, RTB House has always been private-by-design. It embraces first-party advertising and a relentless approach to innovation. RTB House offers end-to-end Deep Learning-powered AdTech products and solutions to maximize conversion, drive new customer acquisition, create engagement, and fuel long-term demand for a global base of clients.

You Will

  • Designing and implementing models, most often of deep neural networks, used to predict the behavior and preferences of Internet users
  • Analysis of the latest works in the field of Machine Learning
  • Conducting and analyzing A/B tests of new solutions
  • Developing and testing new approaches to modeling key issues, such as bidding in first-price auctions

Desired Experience

  • 4+ years of hands-on experience with Machine Learning / Data Science
  • Interest and willingness to constantly develop in the area of ​​Machine Learning
  • Knowledge of statistics and probability
  • Proficiency in programming
  • C1 level in Polish

Selected technologies used

  • Python, Java, Scala
  • PyTorch, NumPy, Pandas
  • Jupyter Notebooks

Additional advantages will be

  • Experience in the ML industry
  • Experience in designing recommendation systems
  • Practical knowledge of the tools we use

Sample topics

  • Implementation and analysis of new model architectures, such as convolutional networks, transformer
  • Analyze the difference in the distribution of training and production data. Estimating the scale of the problem, identifying the best solution, analysis, implementation, deployment
  • Experiments with the use of transfer learning
  • A completely new approach to generating product recommendations that is free from proxy targets and uses contrastive loss function

We Offer

  • Cooperate in a team of enthusiasts with experience in machine learning who willingly share their knowledge and skills
  • Extremely flexible cooperation conditions - you cooperate when it is convenient for you and devote as much time as you can; you can cooperate fully remotely
  • Access to the latest technologies and the possibility of real use of them in a large-scale and highly dynamic project;
  • Possibility of using the possessed knowledge and competences in practical applications - while optimizing algorithms supporting hundreds of millions of Internet users and monthly buyers of billions of advertising views in the RTB model, based on extensive data sets
  • The effects of your cooperate immediately visible in the company's business results
  • Possibility to publish your results
  • Cooperation based on B2B contract or Contract of Mandate
  • You can cooperate 100 % remotely or choose one of our office spaces in Warsaw or Cracow.

Apply now!

You don't need to tick every box to apply. If you are passionate about digital marketing, send us your CV, and we'll review it.

Apply on RTB House's siteMore remote machine learning and AI engineer jobs →

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Ghost Job Detector: Ghost risk: high
  • Open 9 months
  • No pay listed
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