Sergio Catalá is a Senior TYPO3 Developer with 11+ years of hands-on experience designing, upgrading and hardening TYPO3 projects for clients across Germany and Spain. He specialises in clean architecture and performance-focused implementations using PHP, Fluid, TypoScript, HTML, SQL and modern workflows (Git, CI/CD, DDEV, SCRUM). Sergio has led backend teams, mentored developers through formal mentorship programs and driven large LTS upgrades and migration efforts—often establishing company-wide best practices and boilerplates to accelerate new projects. An active contributor to TYPO3 core documentation, he improves clarity and usability of the reference docs, reflecting deep knowledge of the extension API and core architecture. Based in Valencia with a Computer Engineering background, he pairs methodical reliability with a knack for turning legacy codebases into maintainable, high-performance websites.
11 years of coding experience
16 years of employment as a software developer
Computer engineer, Computer engineer at University of Valencia
"TYPO3 Explained": Main TYPO3 Core Document: Main classes, Security, TypoScript syntax, Extension API and much more
Role in this project:
Technical Writer
Contributions:22 commits, 13 PRs, 8 comments in 24 days
Contributions summary:Sergio's commits primarily focus on correcting typos, standardizing terminology, and updating links within the TYPO3 CMS reference documentation. Their work spans multiple sections of the documentation, demonstrating a broad understanding of the TYPO3 core and its extension architecture. The changes involve refining existing content to improve clarity and accuracy. This indicates a focus on improving the quality and usability of the documentation for TYPO3 developers and integrators.
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Sergio Catalá - Senior TYPO3 Developer at Drees & Sommer