Peter Ullrich
Senior Software Engineer at EagleMMS
Leiden, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolPeter Ullrich is a Senior Software Engineer and entrepreneur with 11 years of experience building Elixir/Phoenix applications and leading teams from architecture to delivery. Based in Leiden, he combines hands-on development—recently at EagleMMS—with product-building as founder of Indie Courses and prior startups like Letter to Yourself. A certified Blockchain Engineer and former podcast host of Explain Blockchain, he brings deep domain knowledge in distributed systems and crypto, and has improved developer experience through documentation contributions to notable projects like the ethereum/populus framework. His background spans full-stack web, LiveView realtime apps, and DDD/TDD practices, with a track record of translating complex requirements into pragmatic, maintainable systems. He also blends a multidisciplinary academic background in software engineering, psychology and economics, which informs his user-centered, team-oriented approach.
11 years of coding experience
6 years of employment as a software developer
Bachelor's Degree Economics, Bachelor's Degree Economics at University of CologneMaster Software Engineering and Distributed Systems, Master Software Engineering and Distributed Systems at University of GroningenBachelor's Degree Civil Engineering, Bachelor's Degree Civil Engineering at RWTH Aachen University
German, English, Dutch
Stackoverflow
1,150reputation
210kreached
26answers
12questions
Github Skills (17)
documentation10
ethereum9
web3py8
application-framework7
app-framework7
web-framework7
xcode6
nodejs6
sqlalchemy6
phoenix-framework6
python6
webpack6
elixir6
objective-c6
ios6
Programming languages (20)
Github contributions (5)
ethereum/populus
Oct 2017 - Oct 2017
The Ethereum development framework with the most cute animal pictures
Role in this project:
Technical Writer
Technical WriterContributions:5 commits, 5 PRs, 8 comments in 12 days
Contributions summary:Peter primarily focused on updating and correcting documentation for the `populus` Ethereum development framework. Their contributions included fixing typos, adding and removing sections about Web3.py interaction, and providing recommendations for related documentation. These changes mainly improved the quickstart guide and the introduction to chains, enhancing the clarity and usability of the project's documentation.
pythonpopuluspicturesethereumframework
PJUllrich/Dauerzaehlstellen-Koeln
Apr 2020 - Mar 2025
Contributions:2 PRs, 48 pushes, 7 branches in 4 years 11 months
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