Peter Thomassen
Managing Director at a4a GmbH
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolPeter Thomassen is a Berlin-based technology leader and managing director with 11+ years of experience designing secure Internet infrastructure and software, particularly DNS systems. He blends hands-on engineering—contributing to well-known open-source projects like dnspython and Django REST Framework—with strategic security roles including CTO of deSEC and appointments to ICANN's SSAC. A Ph.D. in particle physics informs his data-driven approach to complex problems, while active IETF participation (now co-chair and secretary in DNS-related WGs) highlights his influence on operational standards. He is comfortable moving between boardrooms and code, having led boutique hosting and nonprofit platforms while hardening real-world DNS tooling and protocols.
11 years of coding experience
10 years of employment as a software developer
Bachelor of Science (B.Sc.), Physics, Bachelor of Science (B.Sc.), Physics at The Julius Maximilians University of WürzburgDoctor of Philosophy (Ph.D.) in Particle Physics, Doctor of Philosophy (Ph.D.) in Particle Physics at Rutgers University
English, German, French
Stackoverflow
1,771reputation
223kreached
12answers
10questions
Github Skills (19)
debug10
python10
django10
testing10
api10
dns10
dnspython10
rest10
dnssec9
documentation8
dependency-management8
asyncio7
dkim6
pydantic6
database6
Programming languages (21)
Github contributions (5)
rthalley/dnspython
Dec 2020 - Jan 2022
a powerful DNS toolkit for python
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 reviews, 8 commits, 7 PRs in 1 year 1 month
Contributions summary:Peter primarily contributed to the `dnspython` library by modifying and extending existing functionality. The commits show the user enhancing the code related to DNS data representation, specifically improving how data is converted to text formats and handled. They ensured the consistency of data lengths and types within DS records. Additionally, the user added missing items and implemented better error handling in several areas within the library, including the handling of CDS records.
dns-over-tlspythontrioednsasyncio
encode/django-rest-framework
Nov 2022 - Nov 2022
Web APIs for Django. 🎸
Role in this project:Back-end Developer
Back-end DeveloperContributions:19 reviews, 1 commit, 8 PRs in 1 day
Contributions summary:Peter primarily focused on improving the Django REST Framework, addressing issues and enhancing its stability. Their contributions included fixing deserialization errors in the DurationField, updating documentation, and removing support for older Django and Python versions. Furthermore, the user removed unused code and addressed a security vulnerability by bumping the pygments dependency.
apipythondjango-rest-frameworkdjangoweb-apis
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