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Home / Jobs / Kayzen
Posted today · be early

Senior Data Scientist (m/f/d)

Kayzen

WorldwideremotePosted today
Kayzen logo

Skill Required

Data-ScienceData-ScientistMachine-LearningAdTechData-EngineeringSenior-Data-Scientist-IIISenior-Machine-Learning-Data-ScientistSenior-Data-ScienceSenior-Staff-Data-ScientistSenior-Data-Science-EngineerSenior-Data-Scientist-LeadSenior-Data-Science-SpecialistSenior-Data-Science-EngineeringData ScientistMachine LearningStatisticsEngineeringdevelopingObservabilityData StructuresbuildingAirflowTestNGPythonHadoopDockerSparkAPIsSQLandSignal ProcessingFulltime

Key highlights

  • Required experience: Minimum 5 years
  • Notable requirement: Previous experience in Ad-Tech is a must
  • Benefit: 500-dollar home-office setup budget
  • Benefit: 1000-dollar annual learning and development budget
  • Location: Remote (Europe) with relocation option to Berlin

Role overview

Kayzen is a mobile demand-side platform (DSP) dedicated to democratizing programmatic advertising, enabling apps, agencies, media buyers, and brands to run customer acquisition, retargeting, and brand performance campaigns. With a scale of 160B+ daily ad requests from 1.6B+ unique users worldwide, the company provides bespoke solutions through APIs and a user interface. Kayzen is seeking a Senior Data Scientist to join a diverse and globally distributed Data Science team. The role involves working on machine-learning models that process terabytes of data in real-time to disrupt the multi-billion dollar ad-tech industry.

Responsibilities

  • Enhancing Models: Continuously improving existing models by incorporating new features, fine-tuning parameters, and utilizing additional data.
  • Algorithm Development: Collaborating with our Machine Learning Engineering team to develop and deploy scalable supervised and unsupervised learning algorithms.
  • Data Exploration: Identifying and exploring new data sources while researching innovative ways to leverage both new and existing data effectively.
  • Solution Research: Investigating new Machine Learning solutions to optimize every step of our value chain.
  • A/B Testing: Regularly conducting and evaluating A/B tests to drive insights and refine our strategies.

Requirements

  • Minimum 5 years of experience in developing data science products, from initial research through to production deployment.
  • Strong coding skills with a focus on clean, reproducible, and well-tested code.
  • Proficient in key tools and technologies including Python, Spark, Hadoop, Airflow, Docker, and SQL.
  • Hands-on experience with algorithms for handling sparse and large datasets, including applications in prediction, clustering, and outlier detection.
  • Good understanding of dashboards and SQL for developing and enhancing monitoring tools.
  • Previous experience in Ad-Tech is a must.

Nice to have

  • Experience in building neural network-based products for tasks such as classification, regression, and multi-task learning is highly valuable.
  • Knowledge of reinforcement learning and large-scale optimization problems is a significant asset.

Benefits

  • Directly working with Founders and an opportunity to drive direct impact
  • Exceptional career growth and learning opportunity
  • A unique opportunity to be part of an experienced team of industry experts and entrepreneurs who bring massive change to the Adtech market
  • A fun, driven, and multinational team located across Germany, India, Argentina, Canada, Spain, the UK and many more countries.
  • A flexible work-from-home arrangement
  • Opportunity to relocate to our office in Berlin
  • A 500-dollar home-office setup budget
  • A 1000-dollar annual learning and development budget

Additional details

  • Europe, Remote
  • The team includes members like Heiko and Chen.
  • The company prioritizes 'Simplicity First', 'Impact-Driven' outcomes, 'Collaborative Spirit' across analysts, engineers, and data scientists, and 'Embrace Experimentation'.
  • Originally posted on Himalayas

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LocationWorldwide
TypeFulltime
Posted10/3/2026
Apply by12/2/2026

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