Christian Schmidt
Senior Systems Architect at Relatel
Copenhagen, Capital Region of Denmark
Summary
🤩
Rockstar🎓
Top SchoolChristian Schmidt is a Senior Systems Architect with 25 years of hands-on experience building and architecting distributed web and telephony systems from Denmark. He blends strong backend expertise across PHP, Ruby, and Go with pragmatic full-stack work—shipping production microservices, Dockerized deployments, and real-time VoIP/GSM integrations at Relatel. A prolific open-source contributor, he has improved core libraries used widely (Symfony HttpFoundation, SwiftMailer, Rails, Matomo and Mastodon), often focusing on robustness, internationalization, and testing edge cases. Comfortable in small autonomous teams, he pairs deep engineering craft with operational sensibility—continuous delivery, observability and billing/provisioning logic. Curious and contrarian by nature, he pursues diverse side projects that explore UX, accessibility and localization beyond the typical systems architect remit.
25 years of coding experience
18 years of employment as a software developer
HD, Finance, HD, Finance at Copenhagen Business SchoolRungsted GymnasiumM.Sc. (Eng.), Computer science, M.Sc. (Eng.), Computer science at Technical University of DenmarkExchange student, Computer science, Exchange student, Computer science at McGill University
Danish, English, German
Stackoverflow
490reputation
55kreached
8answers
0questions
Github Skills (70)
sendmail10
testing10
rspec10
http10
smtps10
web-analytics10
messageformat10
ruby10
webmock10
e-mail10
mailer10
symfony-ux10
timezone10
javascript10
component-development10
Programming languages (16)
Github contributions (5)
mikel/mail
Feb 2020 - Dec 2022
A Really Ruby Mail Library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 reviews, 15 commits, 8 PRs in 2 years 10 months
Contributions summary:Christian focused on fixing a bug related to dot-stuffing in the SMTP delivery method, ensuring proper handling of message termination in older Ruby versions. They also implemented lazy-loading of fields and elements within the mail library, improving performance. Additionally, the user made changes to restore configurations for field mapping and related constants, highlighting their work on library structure.
mailsmtpmtaemailruby
azuyalabs/yasumi
Mar 2018 - Jun 2020
The easy PHP Library for calculating holidays
Role in this project:Back-end Developer
Back-end DeveloperContributions:38 commits, 58 PRs, 58 comments in 2 years 3 months
Contributions summary:Christian primarily focused on improving the accuracy and functionality of the PHP holiday library. They fixed spelling errors in translations for various locales, ensuring correct holiday names are displayed. Furthermore, the user refactored the code to ignore time and timezone components when calculating holidays, and integrated PHP timezone libraries for daylight saving time transitions. The user added new observed holidays and fixed missing translations to increase language support.
apicalculationsphpcalculate-holidaysphp-library
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