Karsten Holderbaum - Subproject Manager

Q: Where is Karsten based?

Karsten is based in Cologne, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Karsten speak?

Karsten speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Karsten have?

Karsten has at least 35 years of experience. During this time, Karsten has worked in at least 13 different roles and for 15 different companies . The average length of individual experience is 2 years and 4 months . Note that Karsten may not have shared all experience and actually has more experience.

Q: What is Karsten's latest experience?

Karsten's most recent position is Subproject Manager at Vereinigte Hagelversicherung .

Q: What companies has Karsten worked for in recent years?

In recent years, Karsten has worked for Vereinigte Hagelversicherung , Sky Deutschland GmbH , BWI GmbH , and Self-employed Entrepreneur .

Q: Which industries is Karsten most experienced in?

Karsten is most experienced in industries like Professional Services , Information Technology , and Insurance . Karsten also has some experience in Telecommunication , Automotive , and Government and Administration .

Q: Which business areas is Karsten most experienced in?

Karsten is most experienced in business areas like Strategy , Project Management , and Information Technology . Karsten also has some experience in Customer Service , Sales , and Marketing .

Q: Which industries has Karsten worked in recently?

Karsten has recently worked in industries like Professional Services , Information Technology , and Government and Administration .

Q: Which business areas has Karsten worked in recently?

Karsten has recently worked in business areas like Information Technology , Project Management , and Strategy .

Recommended expert

Cologne, Germany

Experience

Jan 2023 - Dec 2024

2 years

Giessen, Germany

Subproject Manager

Vereinigte Hagelversicherung

Replacing the existing document management and reporting/BI system as part of the system landscape renewal based on the Sapiens Insurance Platform
Supporting the journey to becoming a digital agricultural insurance company

Jan 2022 - Dec 2022

1 year

Munich, Germany

Process Consultant

Sky Deutschland GmbH

Advising on quality assurance of new products and processes
Setting up effective test tracks
Responsible for quality assurance of process flows for new products

Jan 2019 - Dec 2022

4 years

Bonn, Germany

Project Manager, Quality Assurance

BWI GmbH

Conducting, further developing, and optimizing the methodology for quality assurance of project plans
Supporting the planning of new projects

Jan 2019 - Dec 2019

1 year

Munich, Germany

Project Manager

Münchener & Magdeburger Agrarversicherung AG

Implementation project for a new policy administration and a new quoting system
Managing the overall project and project stakeholders (business units and IT service providers)

Jan 2017 - Dec 2019

3 years

Cologne, Germany

Project Manager

empulse GmbH

Restructuring of the sales processes
Implementing the new processes in the organization
Adjusting the corresponding interfaces

Jan 2016 - Dec 2017

2 years

Wuppertal, Germany

Project Manager

Vorwerk & Co. KG

Creating an IT roadmap for software products at the end of their lifecycle
Creating a concept for mobile device management for the use of mobile devices

Jan 2009 - Dec 2016

8 years

Project Manager/Subproject Manager

T-Mobile/Telekom AG

Leading a cost-saving project to reduce IT costs
Developing a multi-channel concept
Selecting an international campaign management system
Launching a new mobile phone product

Jan 2009 - Dec 2016

8 years

Wolfsburg, Germany

Project Manager Coach

Volkswagen AG

Designing and introducing a campaign-based customer loyalty program for new car buyers

Jan 2007 - Present

19 years 3 months

Project Manager & Strategy Consultant

Self-employed Entrepreneur

Working on the projects listed below in strategy, project management, business analysis, requirements management, and software implementation.

Jan 2005 - Dec 2007

3 years

Cologne, Germany

Head of Business Solutions

Seven Principles AG

Leading and developing the Business Consulting division

Jan 2002 - Dec 2005

4 years

Düsseldorf, Germany

Division Manager / Client Partner

Cambridge Technology Partners

Managing and developing strategic accounts

Jan 1999 - Dec 2002

4 years

Bonn, Germany

Head of CRM Division

Heyde AG

Managing the CRM division as an independent profit center with 15 employees

Jan 1996 - Dec 1999

4 years

Düsseldorf, Germany

Senior Consultant

Accenture

Executing and co-leading functional projects in the financial services sector

Jan 1993 - Dec 1996

4 years

Bielefeld, Germany

Head of Organization

AXA Versicherung AG

Building up a sales organization (15 employees) aimed at marketing financial services products to academic health professionals

Jan 1991 - Dec 1993

3 years

Cologne, Germany

Industry Consultant

Allianz Versicherung AG

Providing end-to-end support to major industrial clients in the transport insurance division

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Professional Services, Information Technology, Insurance, Telecommunication, Automotive, and Government and Administration.

Professional Services

Information Technology

Insurance

Telecommunication

Automotive

Government and Administration

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Strategy, Project Management, Information Technology, Customer Service, Sales, and Marketing.

Strategy

Project Management

Information Technology

Customer Service

Sales

Marketing

Summary

I am a solution-oriented person with a strong drive to execute and assert myself. I quickly recognize problems in the system, find suitable solutions, and take responsibility when it's time to take the reins.

With clear leadership qualities, the ability to admit my own mistakes, and a good sense for situations and people, I act pragmatically and effectively - and reliably bring things to completion.

Skills

Agile & Traditional Project Management
Kanban, Scrum, Jira
Atlassian Confluence
Sapiens Insurance Platform
Microsoft Office Suite
Microsoft Project
Microsoft Visio
Microsoft Sharepoint
Mind Manager
Project Management
It Strategy
Process Modeling
Business Analysis
Software Selection And Implementation
Quality Assurance
Communication & Change Management

Languages

German

Native

English

Advanced

Education

Oct 1986 - Jun 1990

FH Köln

Diploma in Business Administration · Business Administration · Cologne, Germany · 2.0

Aug 1975 - Jun 1984

Humboldt Gymnasium Dortmund

German high school diploma · Dortmund, Germany

Statistics

Experience

Total positions 15

Experience in Professional Services 24 y

Avg length 4 y 7 m

Longest experience 19 y 2 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Subproject Manager, Process Consultant, Project Manager, Quality Assurance

Main industries Professional Services, Information Technology, Insurance

Main business areas Strategy, Project Management, Information Technology

Qualifications

Profile

Created

April 2024

Last Update

September 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Karsten based?

Karsten is based in Cologne, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Karsten speak?

Karsten speaks the following languages: German (Native), English (Advanced).

How many years of experience does Karsten have?

Karsten has at least 35 years of experience. During this time, Karsten has worked in at least 13 different roles and for 15 different companies. The average length of individual experience is 2 years and 4 months. Note that Karsten may not have shared all experience and actually has more experience.

What roles would Karsten be best suited for?

Based on recent experience, Karsten would be well-suited for roles such as: Subproject Manager, Process Consultant, Project Manager, Quality Assurance.

What is Karsten's latest experience?

Karsten's most recent position is Subproject Manager at Vereinigte Hagelversicherung.

What companies has Karsten worked for in recent years?

In recent years, Karsten has worked for Vereinigte Hagelversicherung, Sky Deutschland GmbH, BWI GmbH, and Self-employed Entrepreneur.

Which industries is Karsten most experienced in?

Karsten is most experienced in industries like Professional Services, Information Technology, and Insurance. Karsten also has some experience in Telecommunication, Automotive, and Government and Administration.

Which business areas is Karsten most experienced in?

Karsten is most experienced in business areas like Strategy, Project Management, and Information Technology. Karsten also has some experience in Customer Service, Sales, and Marketing.

Which industries has Karsten worked in recently?

Karsten has recently worked in industries like Professional Services, Information Technology, and Government and Administration.

Which business areas has Karsten worked in recently?

Karsten has recently worked in business areas like Information Technology, Project Management, and Strategy.

What is Karsten's education?

Karsten attended FH Köln for Business Administration.

What is the availability of Karsten?

Karsten is immediately available part-time for suitable projects.

What is the rate of Karsten?

Karsten's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.