Fernando Calleja
Lead Site Reliability Engineer at 37signals
Valencian Community, Spain
Summary
🤩
Rockstar🎓
Top SchoolFernando Calleja is a Lead Site Reliability Engineer with 14 years of hands-on experience building and operating resilient infrastructure for product-focused companies like 37signals, Basecamp and HEY. He progressed from DevOps and SRE roles to lead infrastructure teams, combining pragmatic ops instincts with long-term reliability and scalability work. Based in the Valencian Community, he pairs a formal Computer Science background with a master's in Cities and Urbanism, reflecting curiosity beyond tech and an eye for systems-thinking at different scales. An active open-source maintainer at OscillatingWorks, he favors simple, maintainable tooling over flash — and, despite LinkedIn endorsements, he’s clear he’s not a Java developer. Colleagues describe him as someone who reliably turns operational chaos into predictable systems while keeping product needs central.
14 years of coding experience
8 years of employment as a software developer
Beca Erasmus Informatik, Beca Erasmus Informatik at The Philipp University of MarburgComputer Science Engineering Information Technology, Computer Science Engineering Information Technology at Universidad Complutense de MadridUOC (Universitat Oberta de Catalunya)
English, German, Spanish
Github Skills (170)
database-engine10
security10
gorilla10
extensible10
visualizations10
relational10
sql10
golang10
database10
sqlite10
http-server10
migration-tool10
middleware9
matcher9
acme9
Programming languages (9)
Github contributions (5)
oscillatingworks/bou
Dec 2020 - Mar 2022
Contributions:2 releases, 27 commits, 106 pushes in 1 year 2 months
fern4lvarez/go-metainspector
Apr 2013 - Mar 2016
Contributions:32 commits, 2 PRs, 4 pushes in 2 years 11 months
golangscrapingweb-scrapingcrawlerscraper
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