For this project, I set up a complete Sails.js web application from scratch, including data imports, installation, and deployments. I built DevOps tooling to reliably deploy and install the application, as well as provision the servers it is running on. The application itself is based on the Node.js framework Sails.js.I worked on the development of an API-based web application, used for warehouse and order management at large distributors of promotional materials.

Skills and Technologies:

Node.js

Ansible

Sails.js

Vue.js

Docker

Bash

Virtual Machines

HTML

CSS

DevOps Engineer mit Fokus Docker Swarm Clusters für ein großen Finance-Integrator

In this project at Europace AG, I work with the Solutions-team to improve the setup and roll-out of their Java-based microservices. I help them optimize and improve their build- and deploymentworkflow, and to make their service delivery more robust and reliable.

Skills used:

Docker

Docker Swarm

Ansible

GitLab

Python

Linux

Vagrant

Shell

Virtualbox

Rocket

Kubernetes

LXD

LXC

Prometheus

Splunk.

DevOps - und Build-Pipeline-Consultant mit Fokus Continous Integration für ein großen Finance-Integrator

At Europace I work with the local build-pipeline heroes to improve, optimize, and modularize their CI-pipelines. I help implement Gitflow as a development strategy, and collect and spread knowledge about development, best practices, optimization, and other CI-related subjects.

Skills used:

TeamCity

Maven

Continuous Integration (CI)

Git

Bash

XML

Linux

SSH

SSL

Senior Software-Entwickler mit Fokus JavaScript, Sicherheit, und Smart-Cards

At the Bundesdruckerei I developed several user interfaces for SmartCard applications. I use various industrystandard processes for the creation of specifications, wireframes, and the first round of user experience design. The applications I worked on are implemented with common front-end technologies. Re-usable, clean code was an important aspect of this project, and one of the requirements is to avoid using frameworks.This keeps technical debt low while maintaining high software quality.

Skills used:

Object-Oriented Vanilla JavaScript (ES5, ES6)

JavaScript

Node.js

WebSockets

Browser Extensions

Python

Bash

GIT

SSL

FFMPEG

Video En- und Transcoding

Wireframing

UI Design

UX Design

SCRUM

Agile

Senior JavaScript-Entwickler und DevOps-Engineer für eine Video- und Streaming-Plattform

I've aided the very small team in the development of the Nemo Bridge application, deployment workflows, and the implementation of a continuous integration and continuous delivery setup. I've done a great deal of server management and IT automation with Ansible here, and severely cleaned up, and stabilized the Nemo Bridge runtime. Nemo Bridge is used to manage media-, metadata- and transcoding-services that deliver live TV
streams, video-on-demand and video advertisements.

Skills used:

Ansible

Node.js

REST APIs

Various APIs

SSH

Git

Linux

FFMpeg

GPAC

MP4Box

Python

JSON

XML

Senior Software-Entwickler mit Fokus JavaScript und Browser-Extensions für eine große Freunde-Werben-Freunde-Plattform

I've developed the core JavaScript libraries for Aklamio's referral portals. These libraries communicate with in-house Ruby APIs, and offers advertisers the capabilities to handle user registration, do Aklamio account logins, and to generate user-to-user recommendations. At Aklamio I have also developed the Cashbar browser extension for Chrome and Firefox browsers. This extension allows recommendations, logins, and account registration from within your web browser.

Skills used:

Ansible

Varnish

NginX

GIT

PHP

Wordpress

JavaScript (ES3, ES5, ES6)

Node.js

Gulp

Grunt

Webpack

Symfony

Vagrant

Linux (Ubuntu, Debian)

SSH

Browser extensions

WebExtensions API

Senior JavaScript- und Front-End-Entwickler für Werbekampagnen

At Pixelpark I work on front-end projects within a team of designers, back-end developers and quality assurance engineers.

Skills used:

Git

Bash

Linux (Debian, Ubuntu)

Virtualbox

Vagrant

JavaScript (ES3, ES5, ES6)

jQuery

Node.js

Gulp

PostCSS

CSS3

HTML5

DevOps Engineer mit Fokus WordPress für Sparkassen.

At SFP I work on creating, testing and maintaining the developer workflow for WordPress web applications. This workflow is comprised of Ansible and relevant shell scripts, and run on a Jenkins continuous integration server that handles provisioning of web and mail servers, load balancers, and monitoring servers, and takes care of the deployment of WordPress. The workflow assures maintained server integrity (system updates and security patches) and implements access control lists (ACL), caching, load balancing, monitoring, dependency management, and many more.

Skills used:

Ansible

Varnish

NginX

Node.js

Munin

WordPress

PHP

Git

Bash

YAML

Linux (Ubuntu, Debian

Virtualbox

Vagrant

Web Performance Consultant für eine große Freunde-Werben-Freunde-Plattform

For Aklamio, I analyzed their web stack and reported on issues pertaining to their server performance. I offered overviews of bottlenecks and reported practical performance solutions for Varnish Cache and NginX, but also for improved JavaScript performance in Aklamio's widely-used social widget.

A combination of improved cache configuration, better web stack performance and improvements to client-side code greatly extends the lifetime of the application as well as the hardware it's running on. It saves cost, bandwidth, power, and reduce client-side requirements.

Skills used:

Ansible

Varnish

NginX

SSH

Siege

AB

NetCat (nc)

Git

Bash

Python

Linux (Ubuntu, Debian)

Vagrant

Senior Software-Entwickler mit Fokus WordPress Plugin- und Wordpress-Theme-Entwicklung

At SFP I developed several WordPress plug-ins that are actively being used on their Intranet. These plug-ins hooked into a SOAP webservice and performed various verification actions to ensure high data quality. A special focus in these projects was digital security and data protection.

Skills used:

WordPress

PHP

Git

Bash

JavaScript

jQuery

Node.js

Grunt

Gulp

LESS

CSS3

HTML5

Senior Software-Entwickler mit Fokus WordPress- und Front-End-Entwicklung

At Raisin I've worked as a freelance front-end developer. Initially, I set up the entire website (based on WordPress) and accompanying IT-infrastructure. Later on, I worked as part of the front-end development team and consulted the developers, IT departement and product owners in larger projects.

I set up coding standards, version control, developer machines, web server and caching server configuration. I developed a theme framework for the deployment of all the company's international web sites which greatly improved development speed, code stability and clarity.

Skills used:

WordPress

PHP

Git

Linux

NGINX

Bash

YAML

Virtualbox

Vagrant

Puppet

Ansible

JavaScript

jQuery

Node.js

Grunt

Gulp

LESS

HTML5

CSS3

Senior Front-End Developer bei Immobilienscout24, mit Fokus Automatisierung

Freelance developer as part of the front-end development team at Immobilienscout24. I helped this department to greatly improve their workflow by introducing the Grunt build system to improve productivity and reduce errors and I also set up a build-chain focusing on optimization and cross-platform compatibility. I worked closely with designers, product owners and back-end developers in implementing a new responsive design for the B2B back-end of the web site, of course all tested on all major browser and devices.

In my time at Immobilienscout24 me and the front-end team developed a CSS framework for the quick and easy creation of IS24-themed prototypes. This was received very well, and has saved both the company and its developers a lot of time in remaining brand-conform and technically valid.

Skills used:

JavaScript

jQuery

YUI3

Node.js

Grunt,

Less

HTML5

CSS3

PHP

SVN

Git

Jira

Vagrant

Linux

Co-Founder, CTO

Duitslandnieuws is a platform for news about the Dutch-German trade relationship. My function here is to build a secure and reliable IT-infrastructure: Web server, email services, publishing platform, news aggregator, social media integration.

I take care of the web design and do usability quality assurance for the platform. Next to that, I'm responsible for the development of email templates, and for keeping it all together with lots of duct tape and paperclips.

Skills Used:

PHP

WordPress Plugin Development

WordPress Theme Development

JavaScript

Node.js

Grunt

Gulp

ES5

CSS

CSS3

HTML

HTML5

Git

Sysadmin

Linux (Ubuntu, Debian)

Senior JavaScript- und Front-End-Entwickler mit Fokus E-Commerce

As a freelancer at JustBook, I developed against their Python-driven E-Commerce-Platform. This was already providing the mobile apps, and I made the desktop web application a reality.

Skills used:

JavaScript

jQuery

HTML5

CSS3

Modernizr

Django Templating

Git

Vagrant

Linux

Inhaber von ? [Firma auf Anfrage] ?

?Het Webambacht? is a collective of freelancers from the Netherlands. I fill the role of concept developer, designer and coder; a sort of all-round Front-End developer and designer with a healthy dose of system administration. Here, I take care of the complete package; from strategy development to design, from development to actual hosting. I work together with professionals in copywriting, illustration, photography, video production and on-line marketing to complete my skills.

Inhaber von ?[Name auf Anfrage]?

I'm a freelance Front-End developer and designer with a love for good typography and free software. Over the years I've done everything that has to do with the web; managing content, installation of servers and everything in between. More recently I've focused on the technical aspects of running web sites such as hosting, back-end code and server administration.

Front-End Developer mit Fokus Prototyping und Plattform

As a freelancer at Tam Tam, I worked on a web applications that serves as a market-place for private contractors in the construction field. I developed prototypes and final Front-End code according to the principle of progressive enhancement with a responsive design for iPad, iPhone and Android platforms.

Skills used:

PHP

Less

CSS 2

CSS 3

HTML5

jQuery

Modernizr

JavaScript

Git

Front-End-Entwickler mit Fokus Optimierung

As a freelancer at the ANWB, I worked on various parts and various applications for the high-traffic ANWB website. Here I worked with PHP, Varnish, CSS, HTML5 and Javascript. Focus was on the development of rich HTML5 web pages with jQuery on the Front-End and Hippo 7 as a CMS.

Skills used:

CSS3

HTML5

jQuery

Modernizr

JavaScript

PHP

Git

As a freelancer at Cendris (part of PostNL) I worked as a Front-End developer on various web applications. I created the visual identity, did the web design, and coded the Drupal 6 themes for theses web apps. The themes were adjusted to work well on desktops as well as on smart mobile devices such as iPhone, iPad and Android tablets and phones.

Skills used:

PHP

JavaScript

jQuery

Modernizr

HTML 4

HTML 5

CSS 2

CSS 3

Interface Design

CVS

Front-End-Entwickler mit Fokus E-Commerce und Webshops

My work as a freelancer here entailed the building, designing and management of two websites. One was the company's corporate site, and the other was their e-commerce solution. I took care of the complete implementation, including theming, analytics, email campaigns and online marketing.

Skills used:

PHP

WordPress

Linux Server Admin

Bash

Email

MailChimp

jQuery

Modernizr

Javascript

CSS2

CSS3

HTML5

SVN, Subversion

Front-End-Entwickler und Screen-Designer

Trancon build e-commerce and logistic management software (WMS). At Trancon I filled the position of all-round designer for print, web, interface and user experience. I re-imagined Trancon's corporate identity, providing them with everything from a new logo to presentation templates. I also worked on the marketing of the two flagship products, both through email and online. I converted their two main product sites to WordPress, from installing and configuring the server to the template realization and Front-End optimization and cross-browser compatibility. The themes were optimized to work with desktops as well as tablets like the iPad.

Skills used:

PHP

WordPress

CSS

HTML

jQuery

Javascript

Linux

Bash

SVN, Subversion

Team Foundation Server

This company develops sites on the Drupal platform. My role here was the development of themes and templates for Drupal 5 and 6 and consulting for usability and interface design.

Skills used:

Drupal 4 und 5

PHP

CSS

HTML 4

HTML 5

jQuery

Modernizr

JavaScript

SVN, Subversion

Bash

Design of various web sites for a wide range of clients. My work consisted of the implementation of a design into front end code. The main focus here was compatibility across all main browsers, javascript development, and the production of standards-compliant HTML.

Skills used:

HTML 4

CSS 2

Internet Explorer

Netscape

JavaScript (ES3)

Front-End-Entwickler

At g2o I designed and coded websites, most of them static. I used my skills in the fields of HTML, Javascript and CSS to build cross-browser compatible web sites. (Internet Explorer 4, anyone?)

Skills used:

HTML 4

CSS

Internet Explorer

Netscape

JavaScript (ES3)