Data Engineer Developer in Valencia, Spain

To avoid maintenance during rush hours and prevent accidents, I developed a module for predicting and calculating forecast figures for the maintenance of escalators in a big international airport. The analysis showed that changes in energy consumption of certain parts could indicate technical problems resulting in (future) breakdowns.

Performance analysis and tuning of non-conformances detection of machine constants stored in a Netezza data warehouse appliance for semiconductor machine logs.

I analyzed and tuned several performance issues to store and retrieve the data, bringing query runtimes back from minutes to milliseconds. I redeveloped the data pipeline so it would only store changes in machine constants (constants only change in less than 1% of the cases) instead of always storing all the machine constants and the complete machine log. I further designed and developed a point-in-time detection for the monitoring of non-conformances.

Implementation of proof of technology for IoT beacon processing for indoor positioning to deliver smart shopping presentations to customers.

I designed a solution using existing and proven open-source software, components, and frameworks, developed a data pipeline to store and process IoT beacon data, and used device detection for indoor positioning and proximity engagement. Furthermore, I used digital signage to deliver smart and interactive advertisements. For hot zone and cold zone detection, I developed heatmap visualizations so store flow could be visualized.