Peter Zentjens
Freelance Senior Backend Developer at Take The Lead
Beringen, Limburg, Belgium
Summary
👤
Senior🎓
Top SchoolPeter Zentjens is a freelance senior backend developer from Belgium with 9+ years focused on PHP and deep expertise in Symfony, delivering APIs, web and mobile backends, and custom CMS solutions. He has a long track record contributing to the open-source Kunstmaan CMS—fixing bugs, improving controllers, and integrating Elasticsearch mappings—which reflects hands-on experience in large Symfony projects. Comfortable across the full stack, he also brings basic React skills and prior experience with Zend and Phalcon, enabling pragmatic cross-framework work. As a consultant and owner of deZinc, he pairs delivery with mentorship, having guided junior developers and exercised soft HR skills on client teams. His background in multimedia, desktop publishing and photography gives him a designer’s eye for UX and content-driven systems. Known for stabilizing legacy Symfony apps (v2.8→v4.2) and shipping maintainable fixes, he excels at turning complex backend requirements into reliable production code.
9 years of coding experience
25 years of employment as a software developer
Photography, Photography at Katholieke Hogeschool LimburgCertificate, Vlaamse Gebarentaal (Sign language, Flemish), Certificate, Vlaamse Gebarentaal (Sign language, Flemish) at VSPW HasseltMultimedia, Multimedia at CVOHZHigh School, Natural Sciences & mathematics, ASO, High School, Natural Sciences & mathematics, ASO at Salvatorcollege
Dutch, German, English, Spanish, French, sign language (flemish)
Github Skills (12)
cms10
php10
symfony10
symfony-ux10
amazon-elasticsearch9
elasticsearch-api9
aws-elasticsearch9
elasticsearchquery9
elasticsearch9
nodejs8
database7
databases7
Programming languages (4)
Github contributions (5)
Kunstmaan/KunstmaanBundlesCMS
Jan 2018 - Feb 2019
An advanced yet user-friendly content management system, based on the full stack Symfony framework combined with a whole host of community bundles. It provides a full featured, multi-language CMS system with an innovative page and form assembling process, versioning, workflow, translation and media managers and much more.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:48 commits, 83 PRs, 6 pushes in 1 year 1 month
Contributions summary:Peter primarily contributed to the Kunstmaan CMS by fixing bugs and implementing features across different bundles within the project. They addressed issues in the NodeSearchBundle by adding properties for elasticsearch mapping. The user also worked on fixing the triple page tree in the NodeBundle and resolving a modal issue in the AdminBundle. They also addressed several deprecation warnings and fixed or improved various controller files, and added and implemented features for deletable formsubmissions and updated code to use AclManager.
cmsfull-featuredmulti-languagetranslationcontent-management-system
deZinc/KunstmaanBundlesCMS
Mar 2017 - Feb 2019
An advanced yet user-friendly content management system, based on the full stack Symfony framework combined with a whole host of community bundles. It provides a full featured, multi-language CMS system with an innovative page and form assembling process, versioning, workflow, translation and media managers and much more.
Contributions:195 pushes, 86 branches, 1 tag in 2 years
cmsfull-featuredmulti-languagetranslationcontent-management-system
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