Alejandro Colomar
Linux Man-pages Maintainer Lead Developer at NeoMutt
Spain
Summary
🤩
Rockstar🎓
Top SchoolAlejandro Colomar is a Linux-focused systems engineer and lead maintainer of the Linux man-pages with nine years of experience crafting and modernizing C-based open-source software. He specializes in C, POSIX, shell scripting, Git, and container workflows, and is committed to working exclusively on open-source C projects with remote-first collaboration. Alejandro has contributed substantial refactors and API improvements to projects like NGINX Unit and shadow, improving safety, readability, and modern standards compliance across core system components. He has held principal engineering and DevOps roles (including at NGINX) and maintains stable releases for shadow-utils, demonstrating both release stewardship and low-level codecraft. Based in Spain, he pairs an engineering background in electronics/automation with hands-on maintenance of critical Linux documentation and tooling—an uncommon combination that bridges hardware-minded rigor with kernel-adjacent software craftsmanship.
9 years of coding experience
6 years of employment as a software developer
Various courses, Various courses at edXIndustrial Organization Engineering, Industrial Organization Engineering at Universidad Politécnica de CartagenaVarious courses, Various courses at Cognitive ClassElectronic & Computer Engineering, Electronic & Computer Engineering at Institute of Technology, SligoVarious courses, Various courses at MITx CoursesUniversitat Politècnica de ValènciaSmart Manufacturing & Robotics Delft (minor), Smart Manufacturing & Robotics Delft (minor) at De Haagse Hogeschool / The Hague University of Applied SciencesAcademia Básica del Aire
English, Spanish, Catalan
Stackoverflow
4,358reputation
3.4mreached
83answers
94questions
Github Skills (19)
c-language10
posixct10
system-programming10
c1110
refactor10
c1710
computer-engineering10
posix10
refactoring10
cprogramming-language10
apidoc8
api8
develop7
errno6
pointer6
Programming languages (17)
Github contributions (5)
shadow-maint/shadow
Dec 2021 - Jan 2023
Upstream shadow tree
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 releases, 960 reviews, 110 commits in 1 year 1 month
Contributions summary:Alejandro primarily contributed to the shadow project by refactoring and simplifying the codebase. They removed redundant code, eliminated preprocessor directives (like `HAVE_STRFTIME`) by assuming standard C functionality, and replaced older functions (like `gethostbyname` and `getpass`) with more modern and standard alternatives. Furthermore, the user improved code readability and maintainability by using standard library calls and applying consistent coding practices.
upstreamshadow
nginx/unit
Dec 2021 - Dec 2022
NGINX Unit - universal web app server - a lightweight and versatile open source server that simplifies the application stack by natively executing application code across eight different programming language runtimes.
Role in this project:Back-end Developer
Back-end DeveloperContributions:441 reviews, 54 commits, 86 PRs in 1 year
Contributions summary:Alejandro primarily focused on code cleanup and refactoring within the NGINX Unit project. Their contributions included fixing indentation inconsistencies across multiple source files, improving code readability and maintainability. They also added new array APIs and modified existing code to leverage the new APIs. Additionally, the user corrected code style and addressed potential undefined behavior issues.
nginxuniversal-webproxyserver-appdocker
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