Acquired and managed a contract with the Palo Alto Transportation Management Association (PATMA), increasing user acquisition by 600% within the first 2 years and eventually extending our contract leading to a revenue increase of over 40%.- Implemented a cloud-based architecture for processing high-volume sensor data generated by mobile devices, handling over 100k data points per day with the 75th percentile not reaching above 100ms in latency.- Built a financial incentives system according to PCI DSS security standards that allows users to provision virtual debit cards for personal use.- Worked on a machine learning pipeline for creating predictions on types of transportation used by end-users, by employing a custom-built machine learning model based on sensor data, achieving an accuracy of 90% and processing over 300k data points per month.- Created a Business Intelligence dashboard for both stakeholders and clients, visualizing over 50 different insights about financial and user activity data.- Released a mobile application for both iOS and Android that tracks and visualizes physical activity based on sensor data generated by the device.

Both back- and frontend development on new features & improvements.

Developing browser based software for various innovative and exciting startup projects.

Software development lead, responsible for product ownership, project management and code maintenance.

Developer of the Jassie mobile application for Android and iOS.

Contributed towards the startup development of Litebit, one of the largest cryptocurrency exchanges in The Netherlands.