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Hi! I’m Dennis Claassen.
I’m currently a lead developer at Yoast, leading 2 development teams. Each is part of a multidisciplinary squad, in which we focus on Yoast SEO for Shopify, and the Yoast.com website and MyYoast customer portal.
If you want to get in contact or stay up to date with what interests me at the moment, the best places to find me are:
Skills
Web development. HTML, JavaScript (jQuery, Vue, React), CSS (Sass), PHP (Symfony, Doctrine), Git.
Database design. MySQL, Elasticsearch.
Test automation. Unit testing (PHPUnit, Jest), end-to-end testing (Selenium, Puppeteer), test driven development.
Quality assurance. Linting (PHP_CodeSniffer, ESLint), static analysis (Psalm, PHPStan), code review (Phabricator, GitHub), continuous integration (Jenkins, GitHub Actions), SonarQube.
Soft skills. Communication, coaching, prioritizing, proactive.
Experience
Yoast
Lead developer
October 2021 – Present
Senior developer
March 2021 – October 2021
YoungCapital
In 2017 Hippo HR got acquired by YoungCapital. Being backed by a much bigger company gave a huge boost to the possibilities for our team. In 2019, YoungCapital acquired Jobbird.com and we as a team were given the challenge to adjust our platform to run a second website on it.
Senior developer Uitzendbureau.nl & Jobbird.com
January 2020 – February 2021
Developer Uitzendbureau.nl & Jobbird.com
January 2019 – December 2019
Developer Uitzendbureau.nl
January 2017 – December 2018
Hippo HR
Hippo HR was the company behind Uitzendbureau.nl. I started here during my study, graduated and stayed afterwards.
Web developer Uitzendbureau.nl
August 2012 – December 2016
Graduate Uitzendbureau.nl
January 2012 – July 2012
Developer Uitzendbureau.nl
May 2011 – January 2012
Hogeschool van Arnhem en Nijmegen
During study one of our deliverables had the potential to be put to use during future classes where less developers and more designers would be involved. We as a project team continued work on the product and actually guided the usage during the following semester.
Student assistant
July 2011 – January 2012
SQUARE Concepts
Intern
September 2010 – January 2011
Education
Hogeschool van Arnhem en Nijmegen
Communication & Multimedia Design
September 2008 – June 2012