Projects

 
 
 
 
 
Senior Java Developer
E.ON Business Services GmbH
April 2017 – June 2017 Hannover
Further development/migration of a system in the IAM environment.
Duties
  • Implementation in Java and Spring
  • Introduction of a Behavior Driven Test System

Tags: Java, Scrum, SOAP, REST-Webservice, Test Driven Development, Agile software development, Source Code Management, BDD, LDAP

Frameworks: Java 8, jUnit 4, JAX-WS, Spring, Jenkins, soapUI, SVN, jBehave

 
 
 
 
 
Senior JEE Developer
Systemum Gmbh & Co.KG
April 2015 – March 2017 Braunschweig und Isernhagen
Implementation of a booking platform for rental vehicles.
Duties
  • Implementation in JEE (EJB3.1)
  • Administration JBoss 7.2 (Redhat EAP 6.4)
  • Creation of CI/CD pipeline

Tags: Java EE, Scrum, SOAP, REST web service, Model Driven Development, Test Driven Development, Agile software development, Multi-tier architecture, Kanban

Frameworks: Java EE, jUnit 4, JPA, Hibernate, JDBC, JAX-WS, Postgresql, JBoss 7.2, JMX, Intellij IDEA, gradle, Jenkins, Arquillian, soapUI, SQL, git, Atlassian Jira

 
 
 
 
 
IT Security Consultant
Volkswagen AG
April 2014 – April 2014 Wolfsburg
Leading a workshop on IPv6 security in the vehicle.

Tags: IPv6, Security

 
 
 
 
 
Technical Product Owner
Volkswagen AG
April 2013 – January 2014 Wolfsburg
Introduction of a lifecycle system for managing X.509 certificates. This system is intended to prevent the unnoticed expiry of certificates in production-related IT systems.
Duties
  • Software architecture
  • QA management
  • Test management
  • Interface design
  • Requirements analysis
  • Process design

Tags: Analysis and design, Requirements management, Architecture, SOAP, UML, Agile software development, Kanban, Multi-tier architecture, Requirements engineering

Frameworks: ServiceNow, Tomcat, Nexus Prime, Java EE, Axis2, Jax-WS, BPMN, XMLBeans, JAX-B, XML, XSD, soapUI, Oracle 11i

 
 
 
 
 
Senior Java Developer
EWE TEL GmbH
November 2012 – March 2012 Oldenburg
Technology conversion of a consolidation platform for ordering and managing products in the telecommunications environment. To increase performance and code clearance, the database layer was converted from variable attribute/value matrices to an object hierarchy using OR mapping with JPA/Hibernate.
Duties
  • Implementation
  • Test

Tags: J2EE, Scrum, Continuous Integration, Test Driven Development, Agile software development, Model Driven Development, Multi-Tier Architecture, Service Oriented Architecture, JIRA

Frameworks: Java EE, jUnit 3, Maven, JPA, Hibernate, Spring, JAX-B, JSF, Richfaces, Oracle 11g, Tomcat, Intellij IDEA, Selenium, GEB, Jenkins, SQL, SOAP, Subversion, Atlassian Jira

 
 
 
 
 
IT Consultant
Versatel Deutschland GmbH
August 2012 – October 2012 Stuttgart und Flensburg
Documentation of a system for managing lines (VPN and physical), IPv4 networks and provider and customer routers.
Duties
  • Documentation
  • Reverse-Engineering PHP
  • Reverse-Engineering postgreSQL

Tags: Network management, Carrier, IP networks, Line management, VPN, SQL, UML

 
 
 
 
 
Entwickler
EMDS AG
July 2012 – August 2012 Augsburg
Implementation of an EAI interface between SAP and valuemation by Orchestra.
Duties
  • Implementatation in Orchestra

Tags: EAI, SOA, Webservices, SOAP, valuemation, Orchestra, Multi-Tier architecture

Frameworks: EDMS Orchestra, Java SE, SQL, soapUI, BPMN

 
 
 
 
 
Senior C Developer
Primeforce
May 2012 – May 2012 München/remote
Development of an Apache httpd module which ensures that a specific session cookie is set.
Duties
  • Implementation
  • Solution description

Tags: Apache httpd, C

Frameworks: Apache Portable Runtime (APR)

 
 
 
 
 
Senior Java Developer
Volkswagen AG
July 2011 – March 2012 Wolfsburg

Development of software for online validation of X.509 certificates and user assignment.

This software enables third-party companies to authenticate themselves at Volkswagen using certificates from public or their own trust centers. Certificate-based authentication introduces a higher security standard within the Group.

Duties
  • Coordination of software development
  • Software architecture
  • Implementation J2EE on IBM Websphere
  • Extension of Apache httpd module (mod_ssl, mod_auth_ldap)

Tags: C, Java EE, X.509, PKI Infrastruktur, Identity Management, OCSP, IBM Websphere, Maven, eclipse, IBM Rational Application Developer, SOAP, XML, XSD, RESTful Webservice, PRINCE2, LDAP

Frameworks: Java EE 1.5 (EJB 3.1, Session Beans), IBM Websphere (6 und 8), Axis2 (1.6.0, 1.6.1), Jersey (1.12), soapUI, JPA (Hibernate 4.0), JAX-WS (2.x), jUnit 4, slf4j (1.6), Vaadin (6.6), SVN