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 (Advanced), Slovak (Intermediate) .

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 (IT) , Telecommunication , and Automotive . Dennis also has some experience in Professional Services , Transportation and Logistics , 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 (IT) , and Human Resources (HR) . Dennis also has some experience in Procurement and Purchasing , Supply Chain Management , and Strategy and Planning .

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 (IT) , and Strategy and Planning .

Recommended expert

Munich, Germany

Experience

Sep 2023 - Present

2 years 6 months

Interim CTO

Automotive supplier

Responsibility for building a standalone 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 digitization project (migrating the company to the M365 cloud including MS Teams, telephony, and SharePoint)
Establishing IT operations based on ITIL and ensuring stable operation of the IT infrastructure
Implementing cost efficiency measures

Aug 2023 - Dec 2023

5 months

Interim COO

FTTH construction company

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

May 2023 - Jul 2023

3 months

Interim Agile Lead / Change Manager

International telecommunications provider

Driving the transformation into an agile organization and defining the roadmap for implementation
Supporting program management and stakeholders in understanding and applying an agile approach to complex tasks
Developing concrete improvement measures for agile working methods, and planning and coordinating their implementation
Establishing a framework for measuring, reporting, and tracking activities related to agile ways of working
Managing the transformation efforts to ensure timelines, quality, and added value

Sep 2022 - Jul 2023

11 months

Angel Investor and Advisor

living brain GmbH

Support as an angel investor and advisor with knowledge and experience in general management and organizational development
Project leadership 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

Support as an angel investor and advisor with knowledge and experience in business development (e.g. B2B, B2C, UX/CX)
Sparring partner for founders in general management, business planning, recruiting, and stakeholder management
Successful organization of 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

Responsibility 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

Responsibility for the international delivery of IoT products with a focus on customer experience
Customer onboarding through professional project management, operations, service, and quality assurance
Maintaining long-term customer relationships
Staff restructuring in a company-wide reorganization, and identifying and outsourcing non-core businesses (Nearshore/Offshore) in cooperation with subsidiaries in CEE and APAC

Oct 2017 - Dec 2018

1 year 3 months

Vice President

T-Systems International GmbH

Responsibility 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
Introduction of a cross-departmental agile organization within a company-wide restructuring, including defining new role profiles and coordinating with the works council

Jan 2016 - May 2017

1 year 5 months

Vice President

Deutsche Telekom AG

Responsibility for the Mobile Payment & mCommerce Solutions business unit: strategic planning, sales & business development, product development, and operations
Representing Deutsche Telekom on mobile payment at the GSMA
Discontinuation of the product and execution of a socially responsible staff restructuring due to a strategic corporate decision

May 2015 - Sep 2017

2 years 5 months

Vice President

Deutsche Telekom AG

Responsibility for developing and building an organization that enables teams to flexibly scale their size and capabilities
Using agile principles in governance and design as a blueprint for reorganizing Telekom's innovation division, including negotiations with the works council

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 image design
Short-term assumption of responsibility and rapid onboarding in a completely new field
Initiation of design projects, e.g., redesign of the Innovation Gallery at 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 division into a project-oriented business, product, and network support group
Personnel restructuring as part of a company-wide reorganization

Jul 2011 - Apr 2015

3 years 10 months

Vice President

Deutsche Telekom AG

Responsible for establishing and expanding the supplier management landscape and implementing a nearshore outsourcing strategy for the Products & Innovation executive division
Evaluating, selecting, and managing strategic suppliers and service providers
Implementing additional nearshore activities through an international partner in CEE
Personnel 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
Personnel restructuring as part of a company-wide reorganization
Identifying and outsourcing non-core businesses (nearshore/offshore) in collaboration 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.

Built and managed the nearshore operation for monitoring and system administration of corporate server solutions, data (storage and backup), and network/firewall infrastructure
Project management
Recruiting
Organizational and leadership development, and employee retention

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (9.5 years), Telecommunication (8.5 years), Automotive (2.5 years), Professional Services (1.5 years), Transportation (1 year), and Construction (0.5 years).

Information Technology

Telecommunication

Automotive

Professional Services

Transportation

Construction

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Project Management (15 years), Information Technology (8.5 years), Human Resources (7.5 years), Procurement (4.5 years), Supply Chain Management (4.5 years), and Strategy (3.5 years).

Project Management

Information Technology

Human Resources

Procurement

Supply Chain Management

Strategy

Summary

My heart beats for change and digitization – customer centricity is my focus.

Languages

German

Advanced

Slovak

Intermediate

Profile

Created

June 2023

Last Update

February 2025

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

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 (Advanced), Slovak (Intermediate).

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 (IT), Telecommunication, and Automotive. Dennis also has some experience in Professional Services, Transportation and Logistics, and Banking and Finance.

Which business areas is Dennis most experienced in?

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

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 (IT), and Strategy and Planning.

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.