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# Senior Machine Learning Scientist

- **Company:** Adyen N.V.
- **Location:** Amsterdam, Netherlands
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** A/B Testing, Airflow, Big Data, Information Engineering, Machine Learning, Elearning, Tensorflow, Software Engineering, SQL Databases, Supervised Learning, Pytorch, Apache Spark, Deep Learning, Pandas, Xgboost, Machine Learning Operations
- **Published:** September 12, 2026
- **Apply:** https://www.adzuna.nl/details/5879952083

## About the Role

* You have 5+ years of experience as a machine learning or data scientist;
 * You have experience with the full machine learning model lifecycle in production flows;
 * You have experience leveraging a big data framework to create the pipelines needed to feed the models with appropriate data;
 * You have a good understanding of software engineering practices as well as data engineering and MLOps principles;
 * You have knowledge of data science and statistics and machine learning techniques. These include a strong grounding in statistical inference, machine learning for prediction, and causal inference - Deep Learning experience is a plus;
 * You have strong familiarity with the standard data science toolkit, such as (py)spark, (Trino) SQL, Tensorflow, PyTorch, XGBoost/LightGBM, Pandas, MLFlow or similar MLOps frameworks, and Airflow;
 * You have an experimental mindset with a launch fast and iterate mentality. Extensive experience with designing and running experiments is essential;
 * You are proactively taking the lead in projects, from ideation to deployment. You have experience working with a wide range of stakeholders and can clearly communicate complex outcomes over a wide range of audiences.
 * You stay up-to-date with the latest research and developments in the machine learning field, and apply this where valuable.

## Description

Adyen is looking for a Senior Machine Learning Scientist to join our team in Amsterdam, a person sitting at the cornerstone of algorithms, mathematics, and engineering, who can solve problems by designing and implementing production-ready machine learning solutions. You will be responsible for building, developing and deploying algorithms that power data products at Adyen.

Teams Currently Hiring:

 * Optimise
 * Protect
 * Identity
 * Behavioural Fraud
 * Regulatory Reporting Technology
 * Customer Risk
 * Account Risk Engine

In this role, you will:

 * Research, design, implement, train, deploy and monitor machine learning algorithms, either for batch prediction or real-time. Examples include: on-line learning algorithms to pick the best optimization decision in a changing environment, clustering algorithms to group customers/shoppers, supervised and semi-supervised learning methods for inference on risk patterns or graph analysis, representation learning for behavior prediction and monitoring, Anti-Money Laundering (AML) systems and real-time anomaly detection based on time-series modeling;
 * Develop orchestrated pipelines for analytical purposes and machine learning training;
 * Contribute to ongoing automation efforts for our experiments, training runs, validation runs and monitoring before, during and after deployment. Furthermore, collaborate with MLOps to improve our machine learning tooling;
 * Collaborate closely with product managers and business stakeholders to understand requirements, define problems, and frame them as solvable machine learning tasks;
 * Explore and analyze large, complex datasets to identify patterns, insights, and opportunities for ML-driven solutions;
 * Define key performance metrics, design rigorous experiments (e.g., A/B tests), and perform statistical analysis to validate model performance and quantify business impact


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