Lead Dev, Architect, Consultant, CTO

1/2020 – 4/2022

• Requirements engineering / Solution design / Process & workflow design
• Legacy systems integration consulting and implementation
• Software maintenance and feature development (C#/.NET, React.js, Node.js)
• UI/UX design for in-house user facing components of the software
• created SDKs for encrypted configuration management and Commercetools
backend integration

Full Stack Developer, Solution Architektur

1/2018 – 12/2019

• Analysing business requirements for coming holistic ecommerce solution across all EnBW brands (EnBW, Yello, EN+) for technical implications
• Analysing and prototyping with Spryker, Magento, Shopware, Commercetools with regards for suitability of the technical implications of the business requirements
• Design and proof-of-concept of the system architecture solution

E-Commerce, Software Architecture, System Architektur

9/2017 – 12/2017

• Solution design and development of a frontend with Vue.js for a contract managing solution
• Solution design and development of a frontend with React/Redux for the yelloshop.de Support Center
• Microservice development based on AWS Lambda

React (JavaScript library), Software Architecture

3/2017 – 8/2017

Unterstützung des 12-köpfigen Entwicklungsteams bei Planung, Entscheidungen und Umsetzung einer Mobile-App in React.

Scrum, Software Architecture, React (JavaScript library)

5/2016 – 4/2017

Software development of eCommerce systems of the Deutsche Telekom (shop.telekom.de & smarthome.de).

E-Commerce, Software Architecture, Ruby on Rails

7/2015 – 5/2017

• developed the idea for the product
• developed a prototype in Ruby on Rails / Node.js (server) and Angular.js in CoffeeScript
• re-wrote the software in Elixir/Phoenix (running on the ErlangVM) and React/Redux/ES6
• UI/UX design

React (JavaScript library), Software Architecture

4/2007 – 10/2015

• Team leader IT and Development
• Lead developer for both of mixxt’s software products (php/javascript/MySQL and Ruby on
Rails/CoffeeScript/MongoDB plus additional services written in Sinatra and Grape)
• Introduced and implemented work flows/processes and tools to enhance the developing
process
• a mixture of Scrum and XP
• pair programming for non-trivial tasks
• Gitlab and GitlabCI for code hosting and continuous integration
• local development with Vagrant and VirtualBox
• weekly get-togethers to share insights about tools, techniques and processes • MediaWiki based knowledge base
• MacBooks as the basis for every developer workplace
• Switched from XEN to VMWare ESXi for server virtualization
• Linux server administration
• design and optimization of the in-house php framework for multi client enabled, ultra fast web applications
• feature design and implementation in Php/Javascript
• MySQL database design and optimization
• UI/UX design
• composed music for webcasts and tutorials

Datenbankentwicklung, Software Architecture, System Architektur, Personalentwicklung - Durchführungsplanung