PHP and Symfony Solutions

Kevin Veen-Birkenachs Computer Science Library 2021-01-28

I offer the development of applications with a technology stack based on PHP. Since 2011 I use this language and it’s my programming mother thong. With PHP I programmed insurance calculators for Dionera, human resource platforms for Neue Werte and Facebook applications for Rootcoonect.

As back-end framework I use Symfony. It’s based on the Model-View-Controller concept and allows to setup REST applications with CRUD functionality in a short amount of time.

As database I use MariaDB which roots in MySQL.

Concerning quality assurance I use the PHPUnit-Framework. With the help of this Framework I can write Unit-, Integration-, Function- and Scenario-Tests, to guaranty that the software works as defined, expected and required.

I prefer to use a clean slate approach because this allows me to develop applications with a high velocity and quality. I also offer refactoring services to clean up an existing code base to reduce technical debt. I follow SOLID principles. For me Clean code is not just a phrase, but a mindset.

I prefer to have regular meetings with my customers to get feedback. This allows me to adapt the software fast to the requirements of the client and the market. I like to work in teams with an agile mindset. This could mean to work with Scrum and Kanban, or another agile approaches.

Off course I also know how to work with Front-End technologies like Javascript, JQuery, HTML and CSS, but my specialization is back-end programing and DevOps.

The following two repositories give some code examples how I develop software solution with PHP:

Feel free to contact me for further information.

Online Shop Programming


For a coding challenge I programmed once an almost framework less online shop in a short time frame by using full stack technologies. As relational database I used MySQL. The back-end is programmed with PHP and the dependencies are managed with composer. On the front-end side HTML, CSS, JQuery, Javascript and Bootstrap are used. The code quality was improved by the use of PHPUnit. For easier shipping the applications runs in an Docker container. The full requirements for the coding challenge and the whole code base can be found in this repository:


FourEnergy GmbH

In 2021 I worked as an IT-Consultant at FourEnergy. In this position I worked as a Scrum Master for two German and one Romanian team for the Miele Cie. & KG. I also supported Miele as a member of the executive departement for agile transformation, the “Agile Center of Expertise”. Besides this I helped Miele in the cultural change from a classic to an agile company as Part of the “Culture & Mindset Initiative”.

AtoS IT GmbH

In 2019 I worked at AtoS as Software Engineer in Berlin.

Employment Reference

Work Description

  • I developed Java applications
  • I developed automated software tests with JUnit
  • I optimized the development process
  • I did Code reviews

Project Clients

During my employment at AtoS I worked for clients of the following branches:

Transfer of Knowledge

At the Magdeburger Developer Days I hold a presentation about the topic Continues Integration – Cheap & Easy.

I transferred the following knowledge to my team:


I participated in the GitHub Satellite 2019 Conference in Berlin.


From 2018 to 2019 I worked as Software Engineer for IBM in the Stuttgart region and Magdeburg.

Employment Reference

IBM Client Innovation Center GmbH
IBM Client Innovation Center GmbH

Work Description

Project Clients

During my employment at IBM I worked for a client from the automotive industry in the Stuttgart region.


  • I participated in the one month intensive training IBM Java Masterclass 2018
  • I participated in an intensive training about Kubernetes and Spring Boot
  • I followed the career and educational path software architect
  • I joined the knowledge transfer branch Cloud Application Development and Migration

Neue Werte GmbH

From 2017 to 2018 I worked at Neue Werte as Software Engineer in Berlin

Employment Reference

Work Description

Knowledge Transfer

During my work for Neue Werte I transferred the following knowledge to apprentices:

Tools & Technologies


Dionera GmbH

From 2015 until 2017 I worked as Software Engineer at Dionera in Berlin.

Employment Reference

Working Certificate Dionera GmbH

Work Description

  • Front-end development of insurance calculators.
  • Back-end development of insurance calculators.


Next to working for Dionera I visited the educational facility ATIW.

belboon GmbH

From 2013 to 2015 I worked for belboon as Business Administrator for Marketing Communications in the field of Affiliate Marketing in Berlin.

Employment Reference

Work Description


Next to working for belboon I visited the educational facility OSZ Handel 1.

RootConnect e.K.

In 2011 I worked in the marketing department at RootConnect e.K. in Simmern.

Work Description

  • customer support
  • text development
  • programming
  • graphic design
  • marketing strategy development

Tools and Technologies

Freelance Tutor and Trainer

Since 2011 I work as tutor and trainer for institutions and private customers.

Work Description


As tutor I worked for the following organizations:

Freelance Software Engineer

Since 2009 I work as an Freelance Software Engineer.

Freelance Content Marketing Publisher

From 2012 until 2016 I published paid content marketing articles on my blog