Jobs

Jan 2023 - today

(2 years 2 months)

Kaffee Partner GmbH

Senior Backend Engineer (Freelancer)

Shopware 5 development with PHP 7
Customization of existing Shopware plugins
Development of new plugins for Shopware
Bugfixing Shopware plugins
Infrastructure adjustments to Docker containers

Jul 2022 - Oct 2022

(3 months)

Basilicom GmbH

Backend Software Engineer (Freelancer)

Development with Pimcore 10 and PHP 8
Development of new features according to customer requirements
Customization of data models in Pimcore
Customization of imports and exports in Pimcore
Creation and customization of plugins for Pimcore

Feb 2022 - Apr 2022

(3 months)

Kitafino GmbH

Senior Software Engineer (Freelancer)

Development with PHP 7
Refactoring legacy code
Creation of unit tests for the backend
Implementation of Symfony components for a gradual conversion to the Symfony Framework

Oct 2020 - Feb 2021

(5 months)

Kaffee Partner GmbH

Backend Software Engineer (Freelancer)

Development with the Contao CMS and PHP 7
Upgrading a Symfony based API to a newer Symfony version
Upgrading the landing page system to the newer Contao version
Convert Contao modules to Symfony bundles
Administrative activities on the server landscape
Switching to Docker for local development

Oct 2019 - Mar 2020

(6 months)

TUI Deutschland GmbH

Fullstack Software Engineer (Freelancer)

Development with Zend Expressive and PHP 7 in the backend
Development with React.js and Typescript in the frontend
Creation of unit tests for backend and frontend
Creating Selenium tests with Typescript
Work with various external APIs (e.g. Deutsche Bahn)
Step-by-step transformation of the application towards SPA (Single Page Application)
Increased performance for faster page loading

Jun 2019 - Aug 2019

(3 months)

Powercloud GmbH

Backend Engineer (Freelancer)

Working on legacy code in a PHP 7 environment
Adaptation of market communication for energy suppliers using the EDIFACT interface
Customization and creation of unit tests for quality assurance
Solving bugs and increasing stability

Mar 2018 - Apr 2019

(1 year 2 months)

Hygi.de GmbH & Co. KG

Senior Backend Engineer (Permanent)

Working on the shop using the Symfony Framework in a PHP 7 environment
Integration of fact finder into the shop
Implementation of new features in the shop
Performance optimization of MySQL queries
Working with internal and external APIs
Creation of unit tests with PHPUnit
Frontend customizations using Vue.js

Jul 2014 - Feb 2018

(3 years 8 months)

CHECK24 Vergleichsportal GmbH

Fullstack Software Engineer (Permanent)

Optimizing MySQL queries
Implementation of new features for the frontend
Optimization and maintenance of the payment API
Creation and maintenance of microservices and APIs
Optimization and maintenance of additional APIs
Implementation of Symfony Framework
Switching from PHP 5 to PHP 7
Creation of unit tests with PHPUnit

Jul 2011 - Jun 2014

(3 years)

tourist-online.de GmbH

Software Engineer (Permanent)

Installation and maintenance of the Google map with Google API
Optimizing MySQL queries for the backend
Optimization of cron jobs and shell scripts in the Linux shell
Data grabbing from the AIDA website using wget in the shell
Frontend optimizations and bug fixes
Working with organizer APIs and fixing various import errors
Various projects for AdWords ads realized (main activity)
Creation of videos with Animoto API

Jul 2009 - Jun 2011

(2 years)

MD Hardware & Service GmbH

Software Engineer (Permanent)

Planning and implementation of web-based applications according to customer requirements
Modification of existing applications
Program creation with PHP 5 and Javascript
Creation of websites in HTML with CSS formatting according to design templates
Telephone and online support