Gerard Toonstra
Rotterdam, South Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolGerard Toonstra is an experienced IT professional with 13 years working in data-focused roles, combining practical engineering with a strong interest in data management, quality, lineage, and tooling. Based in Rotterdam, he brings hands-on open-source experience—contributing to Apache Airflow (code and docs) and to the Paparazzi autopilot project where he implemented sensor drivers and hardware integrations—showing breadth across data platforms and embedded systems. He is comfortable across the stack, from workflow orchestration and HTTP operators to low-level SPI and telemetry hardware interfacing. Gerard’s background spans formal engineering studies and project management training, and he gravitates toward pragmatic, testable approaches to ensure data reliability. Colleagues describe him as positive and curious, often exploring novel methods to make data more observable and trustworthy.
13 years of coding experience
Beng, Beng at Amsterdam University of Applied SciencesPostgrad, Postgrad at SOAS University of LondonBsc (not complete), Bsc (not complete) at Vrije Universiteit Amsterdam (VU Amsterdam)PMP, PMP at Qualiti
Portuguese, Dutch, English
Stackoverflow
277reputation
37kreached
7answers
7questions
Github Skills (31)
apache-airflow10
autopilot10
python10
workflow-engine10
c1110
spi10
c1710
sys10
embedded10
orchestration10
serial-communication10
sensor10
api-design9
restful-api9
api-rest9
Programming languages (11)
Github contributions (5)
apache/airflow
Jun 2015 - Sep 2018
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:12 PRs, 40 comments, 2 issues in 3 years 2 months
Contributions summary:Gerard contributed to the Apache Airflow project by primarily updating and modifying documentation files (tutorial.rst), with frequent formatting adjustments. They also made changes to Python code within the airflow/www/app.py, airflow/jobs.py, airflow/models.py and airflow/utils.py files and performed merges from other branches. Additional commits include implementing and testing HTTP operators and sensors.
monitorpythonschedulerapacheprogrammatically
paparazzi/paparazzi
Oct 2012 - Jan 2015
Paparazzi is a free and open-source hardware and software project for unmanned (air) vehicles. This is the main software repository.
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:26 commits, 4 PRs, 7 comments in 2 years 3 months
Contributions summary:Gerard primarily focused on integrating and configuring hardware sensors, specifically an EzOSD current sensor and a Skytraq GPS module, within the paparazzi autopilot system. The user implemented drivers for the EzOSD sensor, reading and processing electrical data, and adapted the Skytraq GPS code for fixed-wing aircraft. Additionally, the user made adjustments to the SPI communication layer and integrated a W5100 ethernet chip for telemetry, demonstrating expertise in hardware interfacing and data acquisition.
pprzpaparazziairdroneshardware
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