Amsterdam
26 May 2026
Senior Machine Learning Scientist I - Performance Marketing logo

Senior Machine Learning Scientist I - Performance Marketing

Booking.com

Senior Machine Learning Scientist I - Performance Marketing

Booking.com seeks a Senior Machine Learning Scientist to join its Performance Marketing team in Amsterdam. The role involves developing and optimizing large-scale ML systems for online bidding, requiring a strong quantitative background and experience in machine learning. Key responsibilities include designing ML systems quality programs, building proof-of-concepts, and collaborating cross-functionally.

HybridFull-timeSeniorPythonHadoop

Salary

Not specified

Work Location

Amsterdam, North Holland, Netherlands, NL

Work Model

Hybrid

Experience Required

5 years

Employment Type

Full-time

Experience Level

Senior (MSc + 5 years or PhD + 2 years)

Core Qualifications

Technical (Must-have)
PythonHadoopSQLSparkMachine LearningFeature EngineeringStatisticsData VisualizationOptimizationSoftware Development
Soft Skills
CommunicationCollaborationProblem SolvingLeadershipMentoringStructured ThinkingLogical Reasoning

Preferred Qualifications

Technical (Nice-to-have)
Fraud domain experience

Key Responsibilities

  • Develop the strategy and execution plan for implementing company-wide ML Systems Quality improvement programs.
  • Collect, assess and develop good practices for ML Systems across the company.
  • Identify opportunities to improve our Machine Learning Systems Development Processes.
  • Translate quality related ideas into actionable capabilities and safeguards for our Machine Learning Platform.
  • Independently define and build proof-of-concepts to test new ideas and demonstrate their potential value to relevant stakeholders.
  • Build readable and reusable code, choosing the right technologies, coding methodologies, and approach from carefully designed rapid prototyping to software deployment at scale.
  • Maintain a highly cross-disciplinary perspective, solving issues by applying approaches and methods from across a variety of ML/AI disciplines and related fields.
  • Identify underlying issues and opportunities across domains and situations through application of structured thinking and logic, and drive concrete improvements.
  • Continuously evolve your craft by keeping up to date with the latest developments in ML/AI and related technologies.
  • Actively contribute to Machine Learning at Booking.com through training, exploration of new technologies, interviewing, onboarding and mentoring colleagues.
Machine LearningSeniorPerformance MarketingPythonBig DataAmsterdamHybridFull-timeBidding AlgorithmsMentoring