web • front-end development • full-stack developer

10/2019 – 3/2021

Transformation einer monolithischen Back-End-App in eine leichtgewichtige Microservices-Architektur: Entwicklung von Diensten mit Node.js, NestJS und TypeScript sowie Erweiterungen der Web-Oberfläche basierend auf React/Redux/GraphQL/JavaScript.

CSS (Cascading Style Sheet), Graphql, HTML, JavaScript, Node.Js, Postgresql, React (JavaScript library), Reactive Programming, Typescript

9/2018 – 10/2019

Entwicklung interaktiver Visualisierungen (3D-Sensordaten) im Browser via WebGL und three.js sowie Webkomponenten für Echtzeit-Dashboards basierend auf HTML und TypeScript.

Angular, CSS (Cascading Style Sheet), HTML, JavaScript, SVG (Scalable Vector Graphics), Three.Js, Typescript, WebGL (Web Graphics Library)

7/2018 – 4/2019

Implementierung (inklusive Hosting) verschiedener Single-Page-Webseiten basierend auf React/GraphQL/Gatsby (JAMstack).

Bash Shell, CSS (Cascading Style Sheet), Docker, Graphql, HTML, JavaScript, Node.Js, React (JavaScript library), Reactive Programming, Typescript

9/2017 – 6/2018

Full rewrite of the XING news portal (frontend) to a React/Redux single page application (SPA); Managing multiple connections to different (mostly REST) backend services, including subsequent migration to GraphQL API stack.

Reactive Programming, Typescript, CSS (Cascading Style Sheet), HTML, JavaScript, React (JavaScript library), Ruby on Rails, Graphql

5/2017 – 8/2017

Entwicklung einer Chatbot-Oberfläche im Browser (Frontend) mit React/Redux, Verbindung zum Backend via REST auf einer microservices-basierten Infrastruktur auf AWS.

Bash Shell, Reactive Programming, Amazon Web Services (AWS), CSS (Cascading Style Sheet), HTML, JavaScript, React (JavaScript library), Ruby on Rails

3/2017 – 6/2017

Entwicklung eines B2B-Portals, Frontend-Anwendung sowie Backend-Dienste in einer k8s-getriebenen Microservices-Infrastruktur basierend auf HTML/CSS, JavaScript, React/Redux und Node.js.

Postgresql, Bash Shell, Docker, Reactive Programming, CSS (Cascading Style Sheet), React (JavaScript library), HTML, JavaScript, Kubernetes, Node.Js

6/2015 – 2/2017

Entwicklung einer Frontend-Webshop-Oberfläche basierend auf HTML, CSS, JavaScript, React und Redux; Design und Implementierung einer AngularJS-basierten Single-Page-Webanwendung sowie eines weiteren NodeJS Backend-Services für Medienkampagnen; Integration in eine bestehende Microservices-Architektur (AWS/Docker).

AngularJS, Amazon Web Services (AWS), Angular, CSS (Cascading Style Sheet), Docker, HTML, JavaScript, Node.Js, React (JavaScript library), Reactive Programming

6/2015 – 8/2015

Beratung und Coaching der Architektur von AngularJS-basierten Web-Apps; Implementierung einer AngularJS-basierten Single-Page-Web-App, Verbindung zu einem bestehenden REST-Backend-API.

Node.Js, Reactive Programming, Angular, CSS (Cascading Style Sheet), HTML, JavaScript, AngularJS

5/2014 – 7/2015

Entwicklung einer real-time-3D-Browser-App mit WebGL, THREE.js und Cesium.js; Entwicklung einer B2B-Web-App für die Erstellung 3D-basierter Video-Animationen im Browser: Verwendung von AngularJS und WebGL im Frontend, Ruby on Rails als Backend.

Reactive Programming, Angular, CSS (Cascading Style Sheet), HTML, JavaScript, WebGL (Web Graphics Library), AngularJS, Ruby on Rails, Three.Js

11/2013 – 5/2014

Responsive (inklusive mobile) Frontend-Implementierung mehrerer Kampagnenseiten für Kunden von Aperto. Verwendung von AngularJS, einschließlich Magnolia-CMS-Integration; in einem Team von vier weiteren Frontend-Entwicklern; verantwortlich für die Planung der Frontend-Architektur, Teamlead und direkte Implementierung.

Jquery, Angular, AngularJS, Content Management, CSS (Cascading Style Sheet), HTML, JavaScript, Reactive Programming

5/2010 – 10/2013

Agency for children, youth, and family marketing; project-driven development of websites (CMS based: typo3, WordPress, but also individual programming (Node.js, Ruby on Rails)), online (multiplayer) worlds, small web games, communities, as well as HTML5-based mobile apps. As the department head, responsible for the 6-15 developers, project coordination, collaboration with each other, creation/concept and PM departments, quality management, and resource management.
Transformation of a classic, waterfall-like PM to a cycle-based workflow/collaboration - substantial borrowings from Kanban. On the IT side, the almost complete virtualization of its own two data centers (for customer hosting and internal infrastructure). Corporate network-wide adoption of Google Apps. Modernization of the IT strategy/technology stack: HTML5, Responsive Design, Node.js and Rails, and MVC-JS frameworks (Angular and Backbone). Technical (internal and customer)
consulting, effort estimation, and conception to deployment and hosting strategies. But also involved as a developer in the operational implementation of various projects (approx. 50% of the time).

Jquery, Angular, AngularJS, Bash Shell, CSS (Cascading Style Sheet), HTML, JavaScript, Mysql, Node.Js, Reactive Programming, Ruby on Rails

4/2008 – 4/2010

SCRUM driven product development of a B2B platform, a cooperation of three teams, distributed at different locations (Hamburg, Berlin). The technologies used were Ruby On Rails, JS/HTML, as well as C++ and MySQL. Integration of external ad servers and networks into its technology stack, opening internal systems through REST APIs. As SCRUM Master, responsible for coordinating and maintaining the development process, release management; as Rails/JS/HTML Developer part of a team of 15 people, complete test-driven development; often using pair programming.

Mysql, Bash Shell, C++, CSS (Cascading Style Sheet), HTML, JavaScript, Jquery, Ruby on Rails

4/2006 – 3/2008

Product development, incubation of (mostly) web-based applications, such as a second-live webcam or a white-label TV web app with its own CMS backend. In a team of about six people responsible for the technical conception and directly involved in the research, implementation, and deployment.

Mysql, Bash Shell, CSS (Cascading Style Sheet), HTML, JavaScript, Jquery, Ruby on Rails

8/2003 – 3/2006

I was a developer for the T-Com House, a showroom for today's technology built in the middle of Berlin on Leipziger Straße. I worked on various media control scenarios with T-Systems, Siemens, Neckermann, and Fraunhofer. We implemented speech recognition and multimedia presentations. We integrated technical interfaces and applications into a comprehensive control platform ("smart home"). We also developed a proprietary domain language called "homespeak". I was involved in the development and deployment of this technology, as well as the technical planning, architecture, and coordination of application integration.

Jquery, Bash Shell, CSS (Cascading Style Sheet), HTML, Java (allg.), JavaScript, Perl, Ruby, SOAP

8/2002 – 4/2003

Entwicklung eines Showrooms mit multimedialen Terminals.

Bash Shell, C++, Opengl, JavaScript

4/2000 – 6/2002

Entwicklung von diversen kommerziellen Websites: west online, davidoff, cycosmos. Weiterentwicklung eines Chat-Servers.

Mysql, Bash Shell, C++, Perl, CSS (Cascading Style Sheet), HTML, JavaScript, PHP

7/1999 – 3/2000

Betreuung von internen System und der Netzwerk-Infrastruktur.

Bash Shell, Perl, Linux-Systemadministrator