since 03 / 2019
  • Caterpillar Motoren GmbH & Co. KG
  • Duration: 11 Months | Team size: 2 Persons
  • Scanner- und Lagerverwaltungs-Software
  • Technologies used: Entwicklung einer Scanner-Software ( Zebra Barcode Scanner ) und einer Lagerverwaltungs-Software zur Verwaltung aller Einlagerungen und Kommissionierungen. Microservice-Architektur mit Spring Boot, Admin Oberfläche als Angular SPA. Software auf dem Embedded System des Scanners als Angular SPA.
  • Tools: Scrum, Java11, Spring Boot 2.1, Angular 7/8, MS SQL
until 10 / 2019
  • Sanacorp
  • Duration: 06 Months | Team size: 2 Persons
  • Vertriebs-Software zum Einsatz auf Windows Surface Tablets
  • Technologies used: Überarbeitung/Erweiterung einer Vertriebssoftware basierend auf Electron.js, React.js auf Windows Surface Tablets.
  • Tools: Scrum, Electron.js, React.js, Node.js, Spring Boot, Oracle
until 03 / 2019
  • Innuce Solutions GmbH
  • Duration: 17 Months | Team size: 10 Persons
  • REST-Schnittstellen & Microservice-Architektur
  • Technologies used: Softwareentwicklung verschiedener REST-Schnittstellen, Microservice-Architektur für eine Flottenmanagement- Software.
  • Tools: Scrum, Kanban, Java8, Wildfly, Spring Boot, JEE, Oracle
10 / 2017
  • MOIA GmbH
  • Duration: 01 Month | Team size: 10 Persons
  • AWS basierte Backend-Software.
  • Technologies used: Mitarbeit an AWS basierter Backend-Software.
  • Tools: Scrum, AWS (Lambda, DynamoDB), Serverless Framework, Kotlin
until 08 / 2017
  • Stromnetz Hamburg GmbH
  • Duration: 36 Months | Team size: 4 Persons
  • Elektromobilität
  • Technologies used: Leitender Architekt und Chefentwickler, Planung und Entwicklung einer Lösung für Elektromobilität, Einführung des Systems
  • Tools: Agile Softwareentwicklung, Domain Driven Design mit Java8 und Scala
  • Akka, Spring, Tomcat, Postgres, git und div.
until 06 / 2014
  • Paul Opitz & CO. GmbH
  • Duration: 12 Months | Team size: 2 Persons
  • Development of a BMECat/ETIM based article database/catalog
  • Technologies used: analysis, design and development
  • Tools: Grails, Groovy, git, Oracle, Apache Tomcat, PostgreSQL
until 06 / 2014
  • Vattenfall VEIS GmbH, Electric Vehicles
  • Duration: 12 Months | Team size: up to 8 Persons
  • Part-time Support of the production system, further development
  • Technologies used: agile development, JEE using Spring, Hibernate and several other tools and libraries, Java for Embedded Systems
  • Tools: Oracle BEA Weblogic, Java, JEE, Python, Spring, Hibernate, JAX-WS, Oracle DB, Maven, Scrum
until 04 / 2013
  • Vattenfall VEIS GmbH, Electric Vehicles
  • Duration: 36 Months | Team size: up to 8 Persons
  • Architect and lead developer, planning and development of several projects for electric vehicles for Vattenfall, creating an infrastructure for roll-out, service and billing of charging stations, international roll-out to the Netherlands and Sweden, development of advanced algorithms within a researach project with a leading German car manufacturer and three universities
  • Technologies used: agile development, JEE using Spring, Hibernate and several other tools and libraries, Java for Embedded Systems
  • Tools: Oracle BEA Weblogic, Java, JEE, Python, Spring, Hibernate, JAX-WS, Oracle DB, Maven, Scrum
until 05 / 2010
  • Vattenfall VEIS GmbH, Sachdatenportal
  • Duration: 15 Months | Team size: 2 Persons
  • Development, documentation and test of a web based asset-management solution connected to a GIS system and SAP
  • Technologies used: agile development, JEE using Spring, Hibernate and several other tools and libraries, SAP connection
  • Tools: Oracle BEA Weblogic, Java, JEE, Spring, Hibernate, Oracle DB, Tekla NIS, SAP JCo
until 11 / 2007
  • Vattenfall VEIS GmbH, Kundenservice Online
  • Duration: 6 Months | Team size: 2 Persons
  • Maintenance and further development of the customer care portal (Kundenservice Online) especially with new requirements regarding the sales processes
  • Technologies used: JDK 1.5, JSP, Servlet, OR-Mapping, X-treme Programming, RDBMS, XML, AXIS, JMS, PDF, JavaMail, SSL/SSH, FTP
  • Tools: BEA Weblogic, Hibernate
until 03 / 2007
  • terralink GmbH, Billing System
  • Duration: 30 Months | Team size: up to 4 Persons
  • Requirements analysis, planning, development, project management, maintenance and operation of a multi-tenancy billing system for a medium sized ISP, multi-tenancy reseller interface in Typo3
  • Technologies used: JDK 1.6, OR-Mapping, RDBMS, XML, AXIS, JMS, PDF, JavaMail, SSL/SSH, FTP, Reporting
  • Tools: JDK 1.6, Hibernate, Spring, PostgreSQL und MySQL, JasperReports, Resin, iText, PHP, Typo3
until 11 / 2003
  • NCH Marketing GmbH, Coupon Clearing System
  • Duration: 18 Months | Team size: up to 5 Persons
  • Requirements analysis, planning, development, project management, maintenance and operation of a coupon clearing/billing system, early roll-out of an early version for production use
  • Technologies used: JDK 1.6, OR-Mapping, RDBMS, XML, AXIS, JMS, PDF, JavaMail, SSL/SSH, FTP, Reporting
  • Tools: JDK 1.6, Hibernate, PostgreSQL, JasperReports, Resin, iText, PHP, Typo3
until 02 / 2000
  • Curry Communication GmbH, CTO
  • Duration: 17 Months | Team size: up to 25 Persons
  • Concept, requirements analysis, planning, development, project management for a new kind of document management system, management for all technical departments
  • Technologies used: Management, Human Resouorces, JDK 1.1 und 1.2, MRJ (Apple Runtime), EJB, RDBMS, UML, JDBC, CORBA
  • Tools: JDK 1.1 and 1.2, BEA Tuxedo, BEA Weblogic Application Server, Versant OODBMS, TogetherJ