Sander Van De Graaf
Principal Engineer at Orb
Randstad, Netherlands
Summary
👤
Senior🎓
Top SchoolSander Van De Graaf is a Principal Engineer with 15+ years building high-availability, cloud-native systems and advising large-scale projects across the Netherlands. He blends deep hands-on expertise in Python, Linux, NGINX/ Varnish and search technologies with cloud architecture work—designing and automating CI/CD and serverless deployments at companies like Ookla, Aegon and Knab. A pragmatic engineer who prefers KISS, he co-founded outage-monitoring services and teaches kids to code, showing a steady streak of entrepreneurship and community engagement. He’s an active open-source contributor, improving packaging and permissions in the popular Serverless Framework and adding diagramming and Python 3 fixes to the transitions FSM library. Based in the Randstad, Sander brings a rare mix of operator sensibility and product-minded architecture, often focusing on small, robust solutions that scale.
15 years of coding experience
16 years of employment as a software developer
HAVO, HAVO at De Lage WaardBa User experience, Ba User experience at De Haagse Hogeschool / The Hague University of Applied Sciences
Dutch, English, German, French
Stackoverflow
191reputation
8kreached
3answers
1question
Github Skills (19)
javascript10
python10
testing10
aws-lambda10
chai10
serverless10
unit-testing9
aws9
state-machine9
api-gateway8
nodejs8
django-haystack6
keychain6
iphone6
codesign6
Programming languages (10)
Github contributions (5)
serverless/serverless
Jul 2016 - Feb 2018
⚡ Serverless Framework – Effortlessly build apps that auto-scale, incur zero costs when idle, and require minimal maintenance using AWS Lambda and other managed cloud services.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:37 commits, 15 PRs, 81 comments in 1 year 7 months
Contributions summary:Sander primarily focused on enhancing the serverless framework's packaging and deployment features, specifically related to file permissions and zip file creation. They addressed a regression issue concerning correct permissions for uploaded binaries. Additionally, the user added comprehensive tests to ensure proper handling of file permissions during the packaging process. Furthermore, the user also modified the codebase to streamline the API Gateway event integration.
aws-lambdaserverlessiot-applicationsawsgoogle-functions
pytransitions/transitions
Dec 2015 - Dec 2015
A lightweight, object-oriented finite state machine implementation in Python with many extensions
Role in this project:Back-end Developer
Back-end DeveloperContributions:10 commits, 1 PR, 10 comments in 1 day
Contributions summary:Sander focused on extending the functionality of the `transitions` library, particularly around diagram generation. They implemented a `Diagram` class and an `AGraph` class using `pygraphviz` to visualize state machines. The user added the ability to optionally include diagrams, and added testing support. The user also fixed a Python 3 compatibility issue.
state-machinespythonfinite-statehierarchical-state-machinenested-states
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