Dennis Claassens Email & Phone Number

- Developed a technical vision, aligning the team towards common goals and fostering a shared sense of purpose.- Crafted a forward-looking technical roadmap, outlining milestones and guiding the team through complex epics.- Spearheaded the development of a React-based design system, and comprehensive style guides using Styleguidist.- Established and orchestrated streamlined processes, leading collaborative meetings to facilitate improvements.- Secured commitment, expertise, and development resources across all application tracks- Created and reviewed reusable and abstract TypeScript/React components integral to the design system's success.- Successfully refactored legacy projects, aligning them with modern standards and integrating the design system.- Ensured thorough coverage for design system components, both through visible examples and rigorous Jest testing.- Implemented updates and optimizations to processes and software surrounding these transitions.

Delft, South Holland, Netherlands

- JavaScript development for the Moxio asset management software (Objectenregister).- Developing organisation wide coding standards and setting up code review sessions.- Partly responsible for setting up Continuous integration (Jenkins) and a PHPUnit testsuite.

Delft, South Holland, Netherlands

- Developing for the Moxio Content Management System using PHP, MySQL and JavaScript.- Developing reusable components for add-on functionality in the CMS, instead of per client custom additions.

Gained experience in a wide variety of activities. Programmed on multiple projects ranging from custom PHP to Magento, including CakePHP, jQuery, HTML, CSS, Web services and XML-RPC. Optimized several project processes and helped the project leader tackle multiple design obstacles. Further skills demonstrated include:• Developing custom CakePHP applications on tight deadlines with loose functionality diagrams and designs• Optimizing and extending CMS by implementing new features and rewriting existing code• Optimized MySQL databases by adding indexes, changing field lengths and rewriting queries• Custom jQuery implementation, including dynamic navigation menus, AJAX pagination and a drag and drop system to allow a “custom wine rack” creation from predefined modules• Helped system administrators find security flaws in our software and patched them• Added custom price calculations to Magento, wrote several API extensions for stock and product updates, and implemented custom templates• Implemented middleware functionality between distinct ERP systems by calling web services or recoding data

Researched the JCR (Java Content Repository) standard which consists of JSR(Java specification request) 170 and JSR 283. The goal of the research was to find out what the main advantage was that the standard brought. This turned out to be portability.Developed a prototype proving how useful the standard was portability wise.• Programming in Java, due to the standard concerning Java• Working with the Google Web Toolkit to facilitate the rich internet application requirement• Working with Apache Jackrabbit and Jeceira as JCR implementations

Developed ASP skills independently to script interaction between web and mail server and allow two-way communication. Made improvements as suggested by supervisor, included scripting a back up system to restore settings of the mail server from a database. Further skills demonstrated include:• Programming in ASP, the language chosen by Sitewise• Preparing during the summer before the internship in order to “hit the ground running”• Developing MySQL skills, alongside PHPMyAdmin