Recommended expert

Markus Steffen

Fullstack-Developer

Markus Steffen
Mainz, Germany

Experience

Sep 2020 - Dec 2024
4 years 4 months
Mainz, Germany

Fullstack-Developer

VRM Digital / RYZE

  • Development and maintenance of a news portal CMS with interfaces.
  • PHP development with HTML, CSS, SCSS, JavaScript, MySQL, Laravel, documentation of the interfaces and the system.
  • Further development of the SSO system based on Laravel with a large API and connections to AWS, SAP, ERPS.
  • Reorganisation and development of the news portals on the basis of a publish platform, services and interfaces to Google, Facebook, Twitter, SSO, SAP technical based on NodeJS with TypeScript and AWS.
  • Technologies: PHP, Laravel, MySQL, JavaScript, Vue.js, NodeJS, TypeScript, jQuery, CSS, SCSS, SASS, Unix, Jira, Confluence, Git, Apache, Nginx, AWS.
Apr 2019 - Apr 2020
1 year 1 month
Frankfurt, Germany

Lead-Developer / Fullstack-Developer

Computer Futures / Sabre Technologie

  • Further development and maintenance of a large hotel website with its own CMS and interfaces to various booking systems.
  • PHP development with HTML, CSS, SCSS, JavaScript, Vue.js, Yii, Caliban, MySQL, Angular, Bootstrap, documentation of the interfaces and the CMS system.
  • Conversion of the entire project from PHP 5.6 to 7.2 and conversion of all database access to PDO-MySQL for security reasons.
  • Advice on the technical direction of projects for new customers.
  • Technologies: PHP, Doctrine, MySQL, JavaScript, Vue.js, Caliban, jQuery, Angular, CSS, SCSS, Bootstrap, Unix, Jira, Confluence, Rally, Git, Apache, Nginx, AWS.
May 2017 - Oct 2018
1 year 6 months
Munich, Germany

Project Management / Fullstack Developer

weeBusiness GmbH

  • Further development of various websites using PHP with Zend, Doctrine, MySQL and Typo3 development and maintenance with HTML, PHP, JavaScript, CSS, Angular, Bootstrap.
  • New development of several websites with APIs using Java, Spring Framework, Thymeleaf, interfaces and test scenario definition, development and documentation.
  • Development of a Contentful interface connection with integrated multi-language capability.
  • Technologies: PHP, Java, Zend 3, Symfony, Spring, Doctrine, MySQL, JavaScript, jQuery, Angular, CSS, Bootstrap, Thymeleaf, SQL, Unix, Jira, Confluence, Git, Apache, Nginx, JBoss, Google Cloud, AWS, Route53, Bamboo, Jenkins 2, Elastic Search, JUnit, UML, OOA/OOD.
Sep 2016 - Dec 2016
4 months
Munich, Germany

IT Consultant Support Admin Databases

Atos IT Solutions and Services GmbH / Telefonica Deutschland

  • Migration of a legacy system and numerous databases, monitoring, error analysis, troubleshooting and second-level support.
  • Technologies: SQL, Unix, Oracle, Jira, Confluence, Remedy, Apache Tomcat.
Jul 2016 - Jul 2016
1 month
Mainz, Germany

Backend application developer

MPM

  • Conception, planning and development of a module for analysing orders and order processes.
  • Object-oriented PHP development with Zend 2 and Doctrine.
  • Technologies: PHP, Zend 2, Doctrine, HTML, CSS, JavaScript, Angular, MySQL, MSSQL, Apache Server, Excel, CSV, Agile software development, UML, OOA/OOD.
Dec 2015 - Jun 2016
7 months

Product developer

Deutscher Landwirtschaftsverlag GmbH

  • Object-oriented web development with Zend framework including analysis, specification, implementation and documentation in wiki and source code.
  • Agile software development with Scrum.
  • Technologies: Zend framework, SCSS, CSS, HTML, PHP, JavaScript, jQuery, Eclipse, MySQL, Grunt, SOAP, XML, web services, UML, OOA/OOD.
Dec 2014 - Nov 2015
1 year

Operations Expert Applications + Second Level IT

univativ GmbH

  • Support and further development of web applications in cooperation with specialist departments and IT service providers.
  • Support and monitoring of the database.
  • Technologies: PHP, Java, .NET, ASP.NET, C#.NET, XML, MySQL, Oracle, HTML, CSS, Apache, Tomcat, Microsoft IIS.
Jan 2014 - Mar 2014
3 months
Mainz, Germany

Backend application developer

Institute of Computer Science, University of Mainz

  • Conception, planning and development of a module for the automatic validation of programme code for use in exercises and tutorials.
  • Technologies: HTML, PHP, CSS, MySQL, Apache Server, UML, OOA/OOD.
Nov 2013 - Dec 2014
1 year 2 months

Research assistant

German Bundestag

  • Setting up and managing office IT in the constituency office, correspondence, transport services, accompanying groups of visitors to Berlin.
Dec 2011 - Nov 2014
3 years
Mainz, Germany

User administration & support

Campus Mainz e.V.

  • Support for the development and user administration of the Campus Mainz platform for communication and information procurement at the University of Mainz.
  • Technologies: Typo3, JSON, XML, PHP, HTML, CSS, Java, C#.NET.
Jun 2011 - Jul 2013
2 years 2 months
Mainz, Germany

Cultural Affairs Officer

Student Government of Johannes Gutenberg University Mainz

  • Organization of small and large events, staff management, design and layout of posters, coordination with GEMA and the public order office, booking and support of artists, organization and operation of event technology.
  • Technologies: Photoshop, InDesign, Illustrator.
Mar 2010 - Dec 2011
1 year 10 months
Mainz, Germany

IT Support

University Medical Centre Mainz

  • Complete IT support for the Institute of Immunology including hardware replacement, documentation, inventory, installation instructions, ordering hardware and software, website support, intranet page creation.
  • Design and introduction of a new Apple server with user and document management, introduction of a RAID system for data backup.
  • Technologies: HTML, PHP, Java, CSS, Open Directory, FTP, SSH, LDAP, SMB, AFP.
Jan 2009 - Present
17 years 1 month
Mainz, Germany

Owner and Managing Director / Fullstack Developer / Backend Developer

Own IT and Event Management Company

  • Further development of various websites with object-oriented PHP using Zend, Symfony and Doctrine.
  • Other tasks: setting up IT networks, installation of hardware and software, social media support and consulting, event support, placement of personnel for events, management of project teams, coordination of service providers.
  • Technologies: PHP, Zend 2, Symfony, Doctrine, MySQL, JavaScript, jQuery, JUnit, CSS, Bootstrap, SQL, Unix, Jira, Confluence, Bitbucket, GitHub, GitLab, Apache, Agile software development, UML, OOA/OOD.

Skills

Focus On Object-oriented Web Development With

  • Php 4,5,7,8, Java, Typescript
  • Html, Mysql, Css, Javascript, Jquery, Angular, Rest, Soap
  • Nodejs, Vuejs, Typescript, Graphql, Laravel
  • Experience With Cms Development Like Typo3, Wordpress, Contentful
  • As Well As Asp.net, C#.net
  • Experience In Development With Zend 1-3 And Cms Systems (Including Custom Solutions)
  • Software Development Using Modern Methods And Tools: Intellij Idea, Phpstorm, Eclipse, Visual Studio
  • Confluence, Jira, Bitbucket, Bambo, Jenkins 2
  • Agile Software Development, Scrum, V-model, Kanban
  • Vagrant, Grunt, Gradle, Git, Github, Ci/ce
  • Rest And Soap
  • Googlecloud, Aws
  • Apache Tomcat, Jboss, Nginx
  • Experience In Creating Functional And Technical Specifications, As Well As Test Cases
  • Experience Leading Development Teams And Serving As Scrum Master
  • Experience In Project Management For Application Development And Enhancement, Including Quality Assurance
  • Experience In Administration And Support, Including First- And Second-level Support

Languages

German
Native
English
Advanced

Education

Oct 2007 - Jun 2014

University of Mainz

Bachelor of Science in Computer Science with a focus on web development and databases · Computer Science · Mainz, Germany

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German high school diploma (Abitur) · Mainz, Germany

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