Who am I

Chief Technology Officer (CTO)

Information technology is my passion and my life’s work. My training as an IT technician began with the fundamentals of digital signal processing and network technologies. Early on, I learned binary operations and programming at the hardware level. Over the years, I have contributed to numerous projects — from developing modern websites to building more complex system solutions. I have always kept up with the latest technologies, diving into new programming languages and SDKs to apply them effectively. Thanks to high-level languages and frameworks, programming has become far more efficient today. Project management methods such as Scrum and Trello support me in planning and coordinating tasks, while version control tools ensure seamless collaboration within a team. Yet before writing the first line of code, it is crucial to answer some key questions: How will the software be deployed? What strategies will be used for backup and scaling? Which database model, programming language, and framework are most suitable? Solid technical knowledge helps guide these decisions, but nothing can replace real-world experience. That is why I will never stop experimenting, exploring new technologies, and continuously learning.

Professional Skills

Development Skills

• General IT and Networktechnologie knowledge (IPv4,IPv6,DNS,ARP,SNMP,ROUTING,SSL)
• C# (Visual Studio, MonoGame, Unity SDK)
• C++ (Visual Studio, Windows Driver Kit (WDK), Hunter)
• PHP OOP (PHP5,PHP7,PHP8)
• PHP Frameworks (Symfony)
• PHP ORM (Doctrine)
• JavaScript (jQuery, Backbone.js, React.js, Angular.js)
• Node.js (WebSockets, npm, Express.js , Backbone.js, React.js , Angular.js)
• HTML5
• CCS3
• SQL (MySQL, T-SQL, MariaDB, PostgreSQL, SQLite, DB2, Firebase,MongoDB)
• Elasicsearch (Elasicsearch, Solr)

Experience and Projects

• 

  August 2024 - today

  CTO

  
  
  
  Docufi3d UG (haftungsbeschränkt)
  Düsseldorf
  Digitale Signaturen
  

  ISO 27001

  Laravel

  php 7/8

  MySQL

  SOAP API

  REST API

• 

  August 2021 - today

  CTO

  
  
  
  IAMX AG
  Zug/Switzerland
  OWN YOUR IDENTITY
  

  SSI

  Kotlin

  Java

  C#

  C++

  NodeJS

  Symfony 5

  Doctrine

  php 8

  MySQL 8 Cluster

  Elasticsearch

• 

  July 2021 - today

  Chief Solutions Architect

  
  
  
  Handy.de
  Düsseldorf
  Telekommunikation
  

  Symfony 4/5

  Shopware 5/6

  Doctrine

  php 7/8

  MySQL 8

  SOAP API

  REST API

  RabbitMQ

  Redis

• 

  October 2020 - July 2021

  Lead Developer PHP/MySQL

  
  
  
  CHECK24 (Vergleichsportal Fashion GmbH)
  Düsseldorf
  Da CHECK ich ALLES!
  

  Symfony 4/5

  Doctrine

  php 7/8

  MySQL 8 Cluster

  Elasticsearch

• 

  October 2019 - October 2020

  Business Intelligence / Senior IT

  
  
  
  Magic Moon Tattooing GmbH
  Erkelenz
  Tattoo Supply
  

  Symfony 3/4

  php 5/7

  MySQL 5/8

  AWS

  Firebird 3

  Vario 8

  Shopware 5/6

• 

  March 2008 - October 2019

  PHP Developer / Senior PHP Developer

  
  
  
  saveNtrust GmbH
  Erkelenz
  Web Development
  

  Symfony 2/3

  Wowza Media Server

  Red5

  AWS

  Doctrine

  php 5/7

  MySQL 5 (+HA Proxy)

  Docker

  Solr

  Node.JS

  React

  Redis

  MongoDB

  REST/SOAP

• 

  April 2006 - March 2008

  Web Developer / Account Manager

  
  
  DTG datentechnik geyer GmbH
  Ratingen
  IT/System house
  

  Account Manager

  Network Services

  Software Services

• 

  September 2000 - April 2006

  SQL/Database Developer

  
  
  Advance GmbH
  Düsseldorf
  TK/VoIP
  

  Database development, T-SQL/MySQL/DB2/FRD

  Data Analytics, SQL

  Statistics and visualisation, VB/C++

  Data Proccessing, VB/C++/Delphi

  Automation, VB/C++

  Payment Processing, DTAUS/EDIFACT

  Data Warehouse, T-SQL/MySQL/DB

• 

  September 1999 - August 2000

  Selective Service

  
  
  Bundeswehr 4./WachBtl BMVg
  Siegburg/Bonn
  Defense
  

  Selective Service at the 4./WachBtl BMVg

• 

  August 1997 - August 1999

  Information Technican

  
  
  Adam-Josef-Cüppers-Berufskolleg
  Ratingen
  Education
  

  Professional education as Information technician

  Abitur (A-levels qualification)

Programing languages

• C/C++ VisualStudio, Cmake ( 1997 - 2006, 10 years)
• C# (VisualStudio 2010-2019) ( 2004 - 2021, 18 years)
• PHP (4 / 5.x / 7.x / 8) ( 2004 - 2021, 18 years)
• JavaScript (plain / jQuery / etc) ( 2004 - 2021, 18 years)