Experience

2019—Present :: Senior Solution Engineer

Loodse / Remote

• Implementation of an application system to deploy, manage, and run Kubernetes clusters
• Technologies: Kubernetes, Google Go, Google Cloud

1993—Present :: Experienced Solutions Engineer

Self-Employed / Oldenburg

• 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 :: Senior Software Engineer

Status Research & Development / Remote

• Implementation of a mobile Ethereum system in a world-wide distributed team
• Technologies: Blockchains, Ethereum, Geth, Google Go

2016—2017 :: Senior Software Engineer

AKKA / Bremen

• 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 :: Senior Software Engineer

Canonical / Remote

• Implementation of Juju, a cloud provisioning and configuration system, in a world-wide distributed team
• 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 Senior Consultant

BTC / Oldenburg

• 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

• 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

• 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 and Boston

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

1999—2000 :: Development Director

RedDot / Oldenburg

• 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

• 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

• 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