Christoph Paasch
Member Of Technical Staff at OpenAI
Mountain View, California, United States
Summary
👤
Senior🎓
Top SchoolChristoph Paasch is a seasoned networking and security engineer with over two decades of experience, currently a Member of Technical Staff at OpenAI after leading core networking efforts at Apple. He holds a PhD from UCLouvain where he made substantial contributions to Multipath TCP, including work on its Linux kernel implementation that remains influential in the open-source mptcp project. At Apple he progressed from Siri systems development to networking architect, designing resilient, high-performance transport features for consumer-scale systems. Christoph combines deep protocol and kernel expertise with practical product delivery, and is known for tackling subtle concurrency and scheduler bugs in multi-path transport code. Based in Mountain View, he brings a research-driven approach to production networking challenges and a track record of improving real-world TCP behavior across devices and datacenters.
26 years of coding experience
11 years of employment as a software developer
Doctor of Philosophy (Ph.D.) Computer Science, Doctor of Philosophy (Ph.D.) Computer Science at Université catholique de LouvainBischöfliche Schule St. Vith
German, French, English, Dutch
Stackoverflow
101reputation
15kreached
3answers
1question
Github Skills (27)
ip10
c-programming10
linux-kernel10
networking10
kernel10
kernel-mode10
network-protocol10
tcp10
protocols10
debug9
debugging9
debugprint9
memory-management9
sys9
concurrency9
Programming languages (8)
Github contributions (5)
multipath-tcp/mptcp
Nov 2008 - Dec 2022
Out-of-tree Linux Kernel implementation of MultiPath TCP
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 releases, 981 commits, 19 PRs in 14 years 2 months
Contributions summary:Christoph's contributions primarily revolve around implementing and refining the MPTCP (Multipath TCP) implementation within the Linux Kernel. The user focused on initializing subflow-specific variables, fixing code duplication issues, and addressing race conditions related to time-wait sockets and the redundant scheduler. The user also addressed code and structural issues to better support the MPTCP protocol. Furthermore, the user refactored and improved various aspects of the MPTCP code base.
kernellinuxlinux-kernelout-of-treetcp
multipath-tcp/mptcp-scripts
Sep 2015 - Jan 2022
A set of scripts to ease the maintenance of MultiPath TCP
Contributions:44 commits, 5 PRs, 42 pushes in 6 years 4 months
tcpmaintenance
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.