Senior Full-Stack Developer

1/2018 – offen

Working as a lead developer in a multilingual SCRUM team of up to 7 developers migrating and refactoring a large, highly customized Magento2 based online store (Jira, Confluence, Slack, Bitbucket, Gitflow).

Provided the development environment (based on Vagrant & Linux, BindFS for speed improvements) to the team. Researched, specified and implemented the technology stack (OpenSSL, Nginx, Varnish, PHP-FPM, MySql, Elasticsearch, Redis) toolkit (NodeJs 8, Yarn, Gulp, SCSS, PHP7.1, Composer, Java) and testing tools (PhpUnit, Behat, Selenium, Chrome).

Enforced coding standards by implementing commit hooks and code sniffers.

Reimplemented the checkout process as Javascript Knockout.js UI components, improving the user experience.

Successfully cleaned up and migrated a huge production database (MySql).

Introduced programming principles, real OOP and dependency injection.

Refactorized/rewritten about 50 shop modules (about 80% of the old code base), added documentation & tests.

Refactorized old untested critical components & implemented unit tests.

Mysql, DevOps (allg.), Testen, Node.Js, Hardware Virtualisierung, JavaScript-Frameworks, Magento, PHP, Symfony, Zend Framework

9/2017 – 12/2017

Developed a responsive database-driven web application with booking functionality and CMS. (Apache2, PHP-FPM, MySql, NodeJs 8, NPM, Gulp, LESS, Bootstrap, PHP7.1, Composer)

Mysql, JavaScript, PHP, Symfony, Zend Framework

7/2005 – 4/2017

Developed the entire software stack of the thin client manufacturer from scratch in collaboration with the system engineer and made many fundamental architectural decisions.

Developed an ExtJs based Thin Client Management Server (TCMS) as a content-rich, database-driven modular web application. Implemented management & processing of XML configurations, connectivity to vendor tools and services, client server communications and user management including ActiveDirectory synchronization. (ExtJs, PHP5, MySql, SQLite, MSSQL, XML-RPC, REST, LDAP/ActiveDirectory, JSON, XML, XPATH, DomDocument, lighttpd, Apache, Nginx)

Developed a web administrable Linux distribution for thin clients. The ExtJs4 based UI (Kommbox) was implemented as a content-rich and modular web application, providing configuration interfaces for system settings as well as for 3rd party software, user management & permissions. (ExtJs, jQuery, underscore, PHP5, Bash / Shell, JSON, XML, XPATH, DomDocument, lighttpd)

Developed an in-house web based database-driven build server. This served the developers to assemble firmware and software packages from various sources and to automatically create the associated installable images.

Defined and abstracted meta data formats for the future-proof mapping of configurations, software states and administration interfaces. Dynamic processing of those. Provided a comprehensive modular framework for system integrators.

Microsoft SQL-Server (MS SQL), Mysql, Linux Entwicklung, JavaScript, JavaScript-Frameworks, PHP, Symfony, Zend Framework