Martin Baulig
Frankfurt, Hesse, Germany
Summary
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Rockstar🎓
Top SchoolMartin Baulig is a staff-level systems engineer with 20+ years of experience architecting runtimes, compilers, debuggers, and secure networking stacks for cross-platform .NET ecosystems. He led strategic platform unification at Microsoft by upstreaming CoreFX changes into Mono, and at Xamarin built the project’s first fully managed TLS 1.2 implementation and a portable PAL for OS crypto APIs. His work spans from authoring Mono’s original C# compiler and MDB debugger to hardening HttpClient/HttpListener and fixing subtle linker and assembly-resolution bugs across dotnet/android, macios and linker repositories. More recently he independently built a production Haskell full-stack app and its BSD-based, VPN-isolated cloud infrastructure—owning PostgreSQL with RLS and an observability stack (Prometheus/Grafana/Loki) and writing tooling such as a Haskell Loki client. Martin combines first-principles systems design with hands-on delivery of secure, high-performance foundations that enable other engineers to move faster. Based in Frankfurt, he is now seeking Staff/Principal roles in Platform, Infrastructure, or Core Services.
14 years of coding experience
18 years of employment as a software developer
Mathematics and Computer Science, Mathematics and Computer Science at Universität Trier
German, English
Stackoverflow
3,010reputation
281kreached
95answers
0questions
cross-platform
top-5%
mono
top-5%
xamarin
top-5%
wcf
top-5%
json
top-5%
Github Skills (46)
xamarin-mac10
unit-testing10
ss10
ios10
ssl10
il10
tls1210
xamarin-android10
net10
nunit10
xamarin10
sslv310
dotnet10
tls1310
intermediate10
Programming languages (8)
Github contributions (5)
mono/mono
May 2012 - Jul 2020
Mono open source ECMA CLI, C# and .NET implementation.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1153 commits, 648 PRs, 1070 pushes in 8 years 2 months
Contributions summary:Martin primarily worked on implementing and enhancing TLS and security features within the Mono project, specifically focusing on the System.Net and System.Security.Cryptography namespaces. Their contributions involved adding support for new TLS versions, improving certificate validation, and ensuring compatibility with various security protocols. They also addressed several bugs related to authentication, connection reuse, and correct handling of responses, showcasing a deep understanding of networking and security principles.
dotnetjitruntimemonoandroid
dotnet/linker
Oct 2013 - May 2019
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 11 PRs, 1 branch in 5 years 8 months
Contributions summary:Martin primarily worked on enhancing the .NET linker, addressing both functional and stability issues. Their contributions include fixing a bug related to type reference resolution in the `SweepStep`, ensuring that type references are resolved before updating their scopes. They also resolved a regression issue concerning symbol reading and added custom logic within the `RemoveFeaturesStep` to allow for reflection-emit and globalization code to be removed.
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