DeepKit®

Company, founder - 2018

DeepKit has been built to help artificial intelligence engineers managing their daily workload in building A.I. Managing experiments, computing servers, and datasets has never been easier. Everything in one beautiful application, everything built to optimize your collaborative work in a team. It's the successor of the MVP AETROS.

URL: deepkit.ai

Technologies used

  • Typescript 2+
  • Angular 6
  • NodeJS with Socketcluster, Oclif
  • Electron
  • HTML5, SCSS
  • MongoDB

AETROS

Company, founder - 2016

AETROS is building an application called AETROS Trainer, an end-to-end deep learning application and neural network training suite, that helps developer to use machine learning, especially deep learning (neural networks) to solve problems using artificial intelligence without the need of having knowledge of the deeper mathematical principles behind neural networks.

URL: aetros.com

Technologies used

  • Typescript 2+
  • Angular 6
  • NodeJS with Socketcluster, Oclif
  • Electron
  • SCSS

Jarves

Open-source, creator

An enterprise and high-speed open-source Content-Management-System (CMS) based on the Symfony framework as a Symfony Bundle with a full RESTful API, an user friendly administration interface and rapid application development (RAD) framework using AngularJS, Propel and other rock-solid libraries.

URL: github.com/jarves/jarves

Technologies used

  • Angular 1
  • PHP with Symfony 2
  • HTML5, SCSS
  • Propel ORM
  • MySQL, PostgreSQL, SQLite

AdFlow, DI UNTERNEHMER

Project, freelancer - 2018

SketchApp like graphical image and HTML5 Banner designer for the web.

Technologies used

  • Angular 6
  • NodeJS with NestJS
  • MongoDB
  • HTML5, SCSS

PHP-PM

Open-source, creator

PHP-PM is a process manager, supercharger and load balancer for PHP applications.

URL: github.com/php-pm/php-pm

Technologies used

  • PHP
  • Docker

FINANZCHECK.de

Employment, Head of Product B2B - 2015

Product manager of the B2B area of FINANZCHECK.

URL: finanzcheck.de

Mindaffect // crossmedia agency

Company, co-founder, CTO – 2009-2013

Mindaffect was a german full-service agency with eight employees and several freelancers.

As founder and CTO I was responsible to build an USP in our technology department and with it a shorter time-to-web than other competitors. We only developed in PHP using our own CMS, hosted on AWS.

We did high-available corporate websites, portals and custom interface for third party applications. This position came along with close contact to customer and solution- orientated thinking, working with big companies like Hubert Burda, Tesa, Tomorrow Focus and Mercedes Benz.

Technologies used

  • PHP
  • HTML5/CSS3
  • JavaScript
  • AWS

Propel ORM

Open-source, lead dev

A highly customizable and blazing fast ORM library for PHP 5.5+.

URL: propelorm.org/

Technologies used

  • PHP

CSS-Element-Queries

Open-source, creator

An event-based CSS element dimension query library with valid CSS selector syntax to change styles and allow responsive images based on element's dimensions and not window's viewport. It's exactly what we need when it comes to responsive Web Components.

URL: marcj.github.io/css-element-queries/

Technologies used

  • CSS
  • Javascript

Gehaltsindex, XING AG

Project, freelancer - 2016

Salary comparison website in German.

URL: gehaltsindex.com

Technologies used

  • PHP
  • Symfony

TopSort.php

Open-source, creator

This library provides several implementations of a Topological Sort (topSort). In additional to the plain sorting algorithm it provides several implementations of a Grouped Topological Sort, means you can pass items with a type which will be grouped together in the sorting. With its implementation of using strings instead of arrays its over 20x faster than regular implementations.

URL: marcj.github.io/topsort.php

Technologies used

  • PHP

Shut The Lock, iOS Game

Project, founder - 2015

Simple reaction-based game for iOs.

URL: itunes.apple.com/us/app/shut-the-lock/id1051876649

Technologies used

  • Ionic
  • HTML5/CSS3

Angular-localStorage

Open-Source, creator - 2015

Simple library to use localStorage directly at TypeScript Angular component class properties.

URL: github.com/marcj/angular2-localstorage

Technologies used

  • Angular2+
  • TypeScript

VIOMA

Project, freelancer - 2013

Ensure software quality by introducing a test suite with phpunit with vagrant dev/continouse-integration server. Refactoring code base to be able to setup unit and integration tests. Introducing selenium, mocha and python tests as well. Integrated new project-management, release-management and QA tools as well as workflows.

Technologies used

  • PHP 5
  • MySQL

JUNGE POLIZEI - Deutsche Polizeigewerkschaft

Project, freelancer - 2013

Built a full-featured RESTful API to their specification for their iOS App.

Technologies used

  • PHP 5
  • MySQL

ClickAndBuy

Project, freelancer - 2013

New full-responsive registration form with nodeJS build system, optimized also for all common mobile devices.

Technologies used

  • HTML5/CSS
  • Javascript/jQuery
  • NodeJS/REST

Alexander Bürkle

Project, freelancer - 2013

A security audit of the own/custom PHP online shop. Found >150 critical vulnerabilities.

Technologies used

  • PHP 5
  • MySQL

Kryn.cms

Commercial Project - 2013

A enterprise open-source Content-Management-System and Content-Management-Framework with a full RESTful API written in PHP and mootools.

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2

jquery-selectBox

Open-source, creator - 2013

jQuery selectBox: A styleable replacement for SELECT elements.

URL: marcj.github.io/jquery-selectBox

Technologies used

  • JavaScript/jQuery

PHP-rest-service

Open-source, creator - 2013

Php-Rest-Service is a simple and fast PHP class for RESTful JSON APIs.

URL: github.com/marcj/php-rest-service

Technologies used

  • PHP5

Max Giermann

Commercial Project - 2012

Corporate website for comedian Max Giermann.

Technologies used

  • PHP 5
  • MooTools
  • HTML5/CSS3
  • Kryn.cms

I EM Music

Commercial Project - 2013

Corporate website for www.iemmusic.de.

Technologies used

  • PHP 5
  • MooTools
  • HTML5/CSS3
  • Kryn.cms

Chronotiming

Company, co-founder, CTO - 2013

A high-performance real-time sport time-tracking software for marathons and other races. The server is written in pure C and the administration in PHP with a HTML5 interface and a RESTful JSON API.

The hardware that actually tracks a runner is ChronoTrack, a RFID tracker. The server itself is extremely fast and calculates ~120.000 times/second and provides the result direct live through a HTML5 WebSocket interface to mobile devices (iPad web client). Was is use in several german marathons and in Letlant Marathon, one of the world biggest Marathon with over 16.000 participants.

Technologies used

  • C
  • PHP 5
  • MooTools
  • HTML5/CSS3
  • Kryn.cms

Tomorrow Focus, Facebook App

Commercial Project - 2012

Tomorrow Focus, Facebook App.

Technologies used

  • PHP 5
  • HTML5/CSS3

BurdaFoodShop, Hubert Burda

Commercial Project - 2012

Online shop for Hubert Burda's FoodShop.

Technologies used

  • PHP 5
  • HTML5/CSS3
  • OXID

Kern Verlag Mobile App

Commercial Project - 2012

Product database and contact book for German customer.

Technologies used

  • Ionic
  • HTML5/CSS3

Bambi.de, Hubert Burda

Commercial Project - 2012

Corporate website BAMBI by Hubert Burda

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2
  • Kryn.cms

Arztweiser

Commercial Project - 2012

Search portal for finding doctors.

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2
  • Kryn.cms

Powerstrips Kreativ, TESA SE

Commercial Project - 2012

Facebook app for their marketing campaign.

Technologies used

  • PHP 5
  • HTML4/CSS2
  • Kryn.cms
  • AWS

Schauinsland Bahn

Commercial Project - 2011

Corporate website.

Technologies used

  • PHP 5
  • HTML4/CSS2
  • Kryn.cms

Golz Gruppe Autohaus

Commercial Project - 2011

Corporate website.

Technologies used

  • PHP 5
  • HTML4/CSS2
  • Kryn.cms

Dachbegrünung24

Commercial Project - 2011

Corporate shop.

Technologies used

  • Oxid
  • PHP 5
  • MooTools
  • HTML4/CSS2

Project und Studium

Commercial Project - 2011

Student platform for Katholische Hochschule Freiburg.

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2
  • Kryn.cms

Dachbegrünung Ratgeber

Commercial Project - 2011

Corporate website.

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2
  • Kryn.cms

Just4Sports

Commercial Project - 2010

Social website.

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2
  • Kryn.cms

Tanzschule Gutmann

Commercial Project - 2010

Corporate website with booking system for Tanzschule Gutmann in Freiburg.

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2
  • Kryn.cms

Stadtleben.de

Commercial Project - 2009

Social website for party-people with over 300.000 registered people.

Technologies used

  • PHP 5
  • MooTools
  • HTML4/CSS2