Dennis Brenndoerfer - Interim CTO

Q: Where is Dennis based?

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

Q: What languages does Dennis speak?

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

Q: How many years of experience does Dennis have?

Dennis has at least 20 years of experience. During this time, Dennis has worked in at least 8 different roles and for 9 different companies . The average length of individual experience is 1 year and 4 months . Note that Dennis may not have shared all experience and actually has more experience.

Q: What is Dennis's latest experience?

Dennis's most recent position is Interim CTO at Automotive supplier .

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

In recent years, Dennis has worked for Automotive supplier , FTTH construction company , International telecommunications provider , living brain GmbH , and GarantieHeld UG .

Q: Which industries is Dennis most experienced in?

Dennis is most experienced in industries like Information Technology , Telecommunication , and Automotive . Dennis also has some experience in Professional Services , Transportation , and Banking and Finance .

Q: Which business areas is Dennis most experienced in?

Dennis is most experienced in business areas like Project Management , Information Technology , and Human Resources . Dennis also has some experience in Procurement , Supply Chain Management , and Strategy .

Q: Which industries has Dennis worked in recently?

Dennis has recently worked in industries like Automotive , Professional Services , and Telecommunication .

Q: Which business areas has Dennis worked in recently?

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

Recommended expert

Munich, Germany

Experience

Sep 2023 - Present

2 years 7 months

Interim CTO

Automotive supplier

Responsible for setting up an independent IT department as part of an IT carve-out across four legal entities in DE/UK/China
Creating an IT requirements specification and tendering IT service contracts
Setting up an IT digitalization project (migrating the company to Cloud M365 including MS Teams, telephony and SharePoint)
Establishing IT operations according to ITIL and ensuring stable IT infrastructure operations
Implementing cost efficiency measures

Aug 2023 - Dec 2023

5 months

Interim COO

FTTH construction company

Conducting due diligence for the NE3 business unit and identifying structural deficiencies
Implementing structural measures to improve quality
Introducing a centralized escalation management system
Developing new framework and individual site contracts for hiring subcontractors and implementing contract management, including digitization with DocuSign
Setting up an IT digitalization project (migrating the company to Cloud M365 including MS Teams and SharePoint)
Advising the management on all aspects of crisis management
Recruiting external site managers and working students

May 2023 - Jul 2023

3 months

Interim Agile Lead / Change Manager

International telecommunications provider

Driving the transformation to an agile organization and defining the roadmap for implementation
Supporting program management and stakeholders in understanding and implementing an agile approach for complex tasks
Developing concrete improvement measures for agile working methods and planning and coordinating their implementation
Creating a framework for measuring, reporting, and tracking activities related to agile working methods
Managing transformation work to ensure time, quality, and added value

Sep 2022 - Jul 2023

11 months

Angel investor and advisor

living brain GmbH

Supporting as an angel investor and advisor with knowledge and experience in general management and organizational development
Project management for backend development through an external nearshore partner
Business development and sourcing strategies for national and international supply chains

Jan 2022 - Jun 2022

6 months

Angel investor and advisor

GarantieHeld UG

Supporting as an angel investor and advisor with knowledge and experience in business development (e.g. B2B, B2C, UX/CX)
Sparring partner for the founders in general management, business planning, recruiting, and stakeholder management
Successfully organizing the pre-seed funding round as lead investor
Mentoring in business design and planning, pitching, and investor acquisition

Feb 2021 - Dec 2021

11 months

Vice President

Deutsche Telekom IoT GmbH

Responsible for IoT Customer Success Management with a focus on developing the existing customer business
Restructuring and transforming a traditional service management into a customer-centric Customer Success Management
Focus on sustainable customer retention and revenue growth

Jan 2019 - Jan 2021

2 years 1 month

Vice President

T-Systems International GmbH

Responsible for the international delivery of IoT products with a focus on customer experience
Onboarding customers through professional project management, operations, service, and quality assurance
Maintaining long-term customer relationships
Restructuring staff as part of a company-wide reorganization, and identifying and outsourcing non-core activities (Nearshore/Offshore) in cooperation with subsidiaries in CEE and APAC

Oct 2017 - Dec 2018

1 year 3 months

Vice President

T-Systems International GmbH

Responsible for design, prototyping and development, as well as the operation of IoT products and services, with a focus on user experience and meeting customer requirements
Implementing a cross-functional agile organization as part of a company-wide reorganization, including defining new role profiles and coordinating with the works council

Jan 2016 - May 2017

1 year 5 months

Vice President

Deutsche Telekom AG

Responsible for the Mobile Payment & mCommerce Solutions business unit: strategic planning, sales & business development, product development, and operations
Representing Deutsche Telekom on mobile payment topics at GSMA
Discontinuing the product and carrying out a socially responsible workforce reduction based on a strategic corporate decision

May 2015 - Sep 2017

2 years 5 months

Vice President

Deutsche Telekom AG

Responsible for developing and building an organization that allows teams to flexibly scale their size and capabilities
Using agile aspects in governance and design as a blueprint for reorganizing the Telekom innovation unit, including works council negotiations

Nov 2014 - Mar 2015

5 months

Senior Vice President Product Design

Deutsche Telekom AG

Interim responsibility for the design of all products and the design portfolio of the Telekom Group, including industrial design, interaction design, colors, materials and brand image design
Short-term takeover of responsibility, getting up to speed in a completely new field
Initiating design projects, e.g. redesign of the Innovation Gallery in the Telekom headquarters

Apr 2013 - Apr 2015

2 years 1 month

Vice President

Deutsche Telekom AG

Responsible for restructuring the online marketing department of the Products & Innovation executive board into a project-focused business, product and network support group
Staff restructuring as part of a company-wide reorganization

Jul 2011 - Apr 2015

3 years 10 months

Vice President

Deutsche Telekom AG

Responsible for building and expanding the supplier management landscape and implementing a nearshore outsourcing strategy for the Products & Innovation executive board
Evaluating, selecting and managing strategic suppliers and service providers
Implementing additional nearshore activities through an international partner in CEE
Staff restructuring as part of a company-wide reorganization

Jan 2010 - Jun 2011

1 year 6 months

Head of Region

T-Systems International GmbH

Responsible for all Operating System Services departments of T-Systems subsidiaries in the WE/CEE region within the Global Delivery Unit
Staff restructuring as part of a company-wide reorganization
Identifying and outsourcing non-core activities through nearshore/offshore outsourcing in cooperation with local subsidiaries in CEE and APAC

Mar 2006 - Dec 2009

3 years 10 months

Košice, Slovakia

Member of the Management Board

T-Systems Slovakia s.r.o.

Establishing and managing the nearshore operation for monitoring and systems administration of corporate server solutions, data (storage and backup) and network/firewall infrastructure
Project management
Recruitment
Organizational and leadership development as well as employee retention

Industry Experience

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

Experienced in Information Technology, Telecommunication, Automotive, Professional Services, Transportation, and Construction.

Information Technology

Telecommunication

Automotive

Professional Services

Transportation

Construction

Business Area Experience

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

Experienced in Project Management, Information Technology, Human Resources, Procurement, Supply Chain Management, and Strategy.

Project Management

Information Technology

Human Resources

Procurement

Supply Chain Management

Strategy

Summary

My heart beats for change and digitalization – customer focus is my priority.

Languages

German

Native

English

Advanced

Statistics

Experience

Total positions 15

Experience in Information Technology 9.5 y

Avg length 1 y 7 m

Longest experience 3 y 9 m

Global Experience

Countries worked in 1 (Slovakia)

Primary country Slovakia

Expertise

Recent roles Interim CTO, Interim COO, Interim Agile Lead / Change Manager

Main industries Information Technology, Telecommunication, Automotive

Main business areas Project Management, Information Technology, Human Resources

Profile

Created

June 2023

Last Update

March 2026

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Frequently asked questions

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

Where is Dennis based?

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

What languages does Dennis speak?

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

How many years of experience does Dennis have?

Dennis has at least 20 years of experience. During this time, Dennis has worked in at least 8 different roles and for 9 different companies. The average length of individual experience is 1 year and 4 months. Note that Dennis may not have shared all experience and actually has more experience.

What roles would Dennis be best suited for?

Based on recent experience, Dennis would be well-suited for roles such as: Interim CTO, Interim COO, Interim Agile Lead / Change Manager.

What is Dennis's latest experience?

Dennis's most recent position is Interim CTO at Automotive supplier.

What companies has Dennis worked for in recent years?

In recent years, Dennis has worked for Automotive supplier, FTTH construction company, International telecommunications provider, living brain GmbH, and GarantieHeld UG.

Which industries is Dennis most experienced in?

Dennis is most experienced in industries like Information Technology, Telecommunication, and Automotive. Dennis also has some experience in Professional Services, Transportation, and Banking and Finance.

Which business areas is Dennis most experienced in?

Dennis is most experienced in business areas like Project Management, Information Technology, and Human Resources. Dennis also has some experience in Procurement, Supply Chain Management, and Strategy.

Which industries has Dennis worked in recently?

Dennis has recently worked in industries like Automotive, Professional Services, and Telecommunication.

Which business areas has Dennis worked in recently?

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

What is the availability of Dennis?

Dennis is immediately available full-time for suitable projects.

What is the rate of Dennis?

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