Career

Experience

2019—Present :: Solution Engineer :: Loodse

  • Oldenburg, Germany - Remote in an international team
  • Implementation of Kubermatic, a multicloud Kubernetes management platform
  • Consulting and customer support regarding clouds, Kubernetes, and Docker
  • Implementation of an application system to deploy, manage, and run Kubernetes clusters
  • Technologies: Kubernetes, Docker, Google Go, Google Cloud, Amazon EC2

1993—Present :: Solution Engineer :: Self-Employed

  • Oldenburg, Germany
  • Consulting for software development processes, software architecture, Google Go, Erlang/OTP, Clouds, Microservices
  • Articles, book reviews, and conference reports for IT magazines like iX, heise developer, Entwickler Magazin, JavaSPEKTRUM, Java Magazin, Linux Enterprise
  • Author of the book Systemprogrammierung in Google Go (System Progrmaming in Google Go)
  • Talks on conferences like OOP, JAX, parallel, DevOps Conference, WebTech Conference
  • Development of open-source software under the label Tideland

2017—2018 :: Software Engineer :: Status Research & Development

  • Oldenburg, Germany - Remote in an international team
  • Implementation of Status, a mobile Ethereum system
  • Technologies: Blockchains, Ethereum, Geth, Google Go

2016—2017 :: Software Engineer and Software Architect :: AKKA

  • Bremen, Germany
  • Architecture and implementation of a logistics management system
  • Implementation and management of development processes, requirements engineering and quality assurance
  • Technologies: Microservices, RESTful API, Google Go, JavaScript, CouchDB, JSON Web Token, Linux, Docker

2011—2015 :: Software Engineer :: Canonical

  • Oldenburg, Germany - Remote in an international team
  • Implementation of Juju, a cloud provisioning and configuration system
  • Management of sub-contractors for the development
  • Technologies: Linux, Google Go, MongoDB, Python, ZooKeeper, Amazon EC2, OpenStack, Azure, MAAS, LXC

2006—2011 :: Team Manager and Consultant :: BTC

  • Oldenburg, Germany
  • Maintenance and extension of Smalltalk and GemStone/S based configuration management system for telecommunication and networks
  • Analysis and consulting for SOA and software architecture
  • Team Manager with up to 24 team members
  • Trainer for requirements engineering and software cost estimation
  • Technologies: Smalltalk, GemStrone/S, Java EE/SE, BizTalk, C#, Python

2003—2006 :: Technical Project Manager and System Specialist :: Thales

  • Wilhelmshaven, Germany
  • Responsible for the data migration sub-project in a larger military project leading 7 team members
  • Technical Project Manager
  • Management of sub-contractors for the development
  • Member of the sub-project data management and meta data
  • Requirements engineering and software quality assurance
  • Technologies: Java EE, TopLink, Oracle, WebSphere, Rational Rose, Rational ClearCase

2001—2003 :: Development Director :: OpenKnowledge

  • Oldenburg, Germany
  • Development Director leading 15 team members
  • System architecture
  • Implementation and management of development processes, requirements engineering, and quality assurance
  • Organization and execution of the staff training
  • Technologies: Java EE, Python, JBOSS, Oracle, IDEA

2000—2001 :: VP Software Development :: CANBOX

  • Oldenburg, Germany and Boston, MA USA
  • Vice President Software Development leading 22 team members
  • System architecture
  • Implementation and management of development processes, requirements engineering and quality assurance
  • Technologies: Java EE

1999—2000 :: Development Director :: RedDot

  • Oldenburg, Germany
  • Development Director for the enterprise edition of the RedDot Content Management System leading 7 team members
  • Software architecture
  • Implementation and management of development processes, requirements engineering and quality assurance
  • Technologies: Java EE, POET OODBMS, SNiFF+, Python

1997—1999 :: System Specialist Unix :: Nordwest-Zeitung

  • Oldenburg, Germany
  • System Specialist for high-available Unix systems
  • Operation of newspaper production systems, SAP R/3, and mail servers
  • Automation using shell, Python, and Perl scripting
  • Implementation of a system monitoring via SNMP
  • Development and implementation of a trouble ticket system
  • Technologies: Solaris, OpenVision Axxion HA, Sun Cluster, Veritas, Oracle, Sybase, Linux, bash, Python, Perl, PostgreSQL

1991—1997 :: System Specialist :: R+V Versicherung

  • Oldenburg, Germany
  • System Specialist for mainframe, servers, PCs, networking, and telecommunication
  • Operation of a number of servers running OS/2, AIX, and DPPX
  • Remote operation of mainframes running MVS with TSO, CICS, and DB2
  • Maintenance of a Token Ring based network
  • Operation of a Siemens Hicom 300
  • Development of applications in Turbo Pascal and ReXX

Education

1987—2000 :: FernUniversität Hagen

  • Computer Science
  • Business Administration

Qualifications and Certificates

  • 2008 :: SEI Software Architecture Professional Certificate
  • 2008 :: CMU SEI - Software Architecture Principles and Practices
  • 2008 :: CMU SEI - Software Architecture Design and Analysis
  • 2008 :: CMU SEI - Documenting Software Architecture
  • 2008 :: CMU SEI - Software Product Lines
  • 2008 :: CMU - Introduction to the CMMI Version 1.2
  • 2007 :: DIA - Agile Methoden für die Entwicklung von Qualitätssoftware (Agile Methods for the Development of Quality Software)
  • 2007 :: DIA - Management von Wartungsprojekten (Management of Maintenance Projects)
  • 2007 :: DIA - Erfolgreiche Prozessverbesserung mit CMMI & Co. (Successful Improvement of Processes with CMMI & Co.)
  • 2004 :: Certified Professional for Requirements Engineering
  • 2002 :: Institut für angewandte Sozialpsychologie - Basisseminar für Führungskräfte (Basic Seminar for Leaders)
  • 2000 :: hso - Führen ohne hierarchische Macht (Leading without hierarchical Power)
  • 2000 :: Java 1.2 Programmer
  • 2000 :: Linux Administrator
  • 2000 :: Object-Oriented Developer
  • 2000 :: Web Programmer
  • 1999 :: Sun Enterprise HA 2.x Cluster Administration
  • 1998 :: XYLAN Netzwerkmanagement mit OmniVision
  • 1998 :: XYLAN Switch Operations
  • 1997 :: Solaris 2.x Advanced Admin / DiskSuite
  • 1997 :: Solaris 2.x Administration 1
  • 1997 :: Solaris 2.x Administration 2
  • 1997 :: Sybase - Fast Track to Sybase SQL Server
  • 1997 :: Sybase - SQL Server Administration