Jan Algermissen
Owner at écociel AG
Sarnen, Obwalden, Switzerland
Summary
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SeniorJan Algermissen is an experienced architect and entrepreneur with 13 years in software engineering, currently running multiple ventures focused on web, cloud, and high-availability systems from Sarnen, Switzerland. He has led platform and product initiatives for large retailers and utilities—including roles as Platform Architect and Lead Architect for major European enterprises—bridging strategic direction with hands-on delivery. A Rust enthusiast and active open-source contributor, he implemented and hardened PEM/X.509 parsing across backends in the widely used rust-native-tls library, improving cross-platform TLS certificate handling and robustness. Jan combines deep platform engineering skills with practical product ownership, enabling teams to move from legacy systems to resilient cloud-native architectures. Colleagues would describe him as pragmatic, detail-oriented, and comfortable operating at the intersection of architecture, ops, and developer experience.
13 years of coding experience
16 years of employment as a software developer
Stackoverflow
4,958reputation
782kreached
86answers
22questions
rest
top-1%
http
top-5%
Github Skills (25)
tls1210
tls1310
mtls10
certificate10
rest10
x50910
libtls10
rust10
webservice9
schannel9
http9
security-framework9
openssl9
cryptography8
testing8
Programming languages (9)
Github contributions (5)
sfackler/rust-native-tls
Jan 2018 - Jan 2018
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 commits, 1 PR, 9 comments in 1 day
Contributions summary:Jan primarily focused on implementing and refining the `from_pem()` function for X509 certificates within the `rust-native-tls` library. Their contributions included adding implementations for various backends such as OpenSSL, Security Framework, and schannel, handling potential errors related to PEM parsing and missing certificates. Additionally, the user addressed build issues and made improvements to handle non-UTF-8 characters in the PEM representation. Further, they added a test for the Certificate::from_pem() function.
algermissen/tokio-bits
Oct 2017 - Apr 2018
Contributions:14 commits, 13 pushes, 1 branch in 5 months
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