Data Scientist

We are looking for a Data Scientist to strengthen our team in Amsterdam, The Netherlands, and work with other team members globally.

The ideal profile has experience in the FinTech sector and knowledge and hands-on development of credit card payment gateways, including direct API integration.

An overview of the requirements:

• Design, develop, and maintain our card payment and mobile wallet infrastructure, including full lifecycle handling: authorization, capture, recurring billing, refund, and chargeback.
• Integrate directly with card payment gateways, orchestration platforms, and acquiring banks, not via third-party plugins or wrappers.
• Build and optimize Apple Pay and Google Pay payment flows.
• Implement and maintain recurring billing systems across multiple countries and currencies.
• Ensure high reliability, observability, and fault tolerance for payment flows through robust logging, retries, and error handling mechanisms.
• Follow PCI-DSS security best practices and ensure proper data handling and encryption in compliance with regulations.
• Produce clear technical documentation for APIs, flows, and deployment practices.
• Write clean, well-structured PHP code following SOLID and OOP principles, and ensure thorough test coverage using PHPUnit.
• Collaborate with cross-functional teams to drive discussions around technical best practices and identify the most effective technical solutions.

Your profile:

• PHP development experience, preferably with Laravel.
• Strong experience with PostgreSQL and relational database design.
• Proficiency in Linux-based development environments and CLI tools.
• Solid knowledge and hands-on development of credit card payment gateways, including direct API integration.
• Proven experience with Apple Pay and Google Pay integrations.
• Demonstrated expertise in recurring billing integration and subscription management flows.
• Understanding of asynchronous programming, with ability to handle its quirks, including non-blocking I/O, job queues, and workarounds in PHP-based environments.
• Familiarity with REST, JSON, SOAP, and XML protocols for third-party API integration.
• Experience with unit testing, CI/CD, and Git-based version control (GitLab).
• Passion for writing clean code.

Bonus Points:

• Exposure to PCI-DSS audits or compliance implementation.
• Experience working with fraud prevention tools or risk engines.
• Knowledge of dispute management and chargeback mitigation tools such as TC40, Ethoca, and Verifi.

Why them:

• Salary: €65,000 - €110,000 (Experience Dependent).
• We have an informal, fun and multicultural working environment.
• Personal development, learning and growth is integrated in our culture, you have the freedom and the budget to travel, attend conferences, workshops and training.
• You will have the opportunity to test your ideas with hundreds of thousands of users in real-time and learn from them.
• We organize many company-sponsored activities including an annual company retreat.

If interested get in touch on LinkedIn or below:

Email: [email protected]