Martin Rosenberger - Interim CTO

Q: Where is Martin based?

Martin is based in Sankt Marienkirchen bei Schärding, Austria .

Q: What languages does Martin speak?

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

Q: How many years of experience does Martin have?

Martin has at least 28 years of experience. During this time, Martin has worked in at least 5 different roles and for 3 different companies . The average length of individual experience is 6 years and 8 months . Note that Martin may not have shared all experience and actually has more experience.

Q: What is Martin's latest experience?

Martin's most recent position is Interim CTO .

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

In recent years, Martin has worked for AI Startup , optiserv GmbH , and Frauscher Sensortechnik GmbH .

Q: Which industries is Martin most experienced in?

Martin is most experienced in industries like Manufacturing , Automotive , and Professional Services . Martin also has some experience in Telecommunication and Information Technology .

Q: Which business areas is Martin most experienced in?

Martin is most experienced in business areas like Product Development , Project Management , and Strategy . Martin also has some experience in Customer Service , Research and Development , and Sales .

Q: Which industries has Martin worked in recently?

Martin has recently worked in industries like Manufacturing , Automotive , and Professional Services .

Q: Which business areas has Martin worked in recently?

Martin has recently worked in business areas like Product Development , Project Management , and Strategy .

Recommended expert

Sankt Marienkirchen bei Schärding, Austria

Check rate

Experience

Sep 2024 - Dec 2025

1 year 4 months

Interim CTO

Took over CTO responsibilities in a technology company with approximately 50 employees after majority acquisition by a new investor
Turned around product development by defining and focusing on product strategy and goals
Prioritized projects by business value and reduced the number of parallel development projects
Introduced critical chain project management (CCPM) and portfolio management methodologies

Jun 2023 - Feb 2024

9 months

Critical Project Management

Represented and replaced the project manager during the critical phase of the project and achieved a turnaround through transparent communication and coordination of all stakeholders
Managed backlog, software development, implementation and testing
Developed and implemented a new functionality that enabled the client to achieve cost savings of up to 30%

Jan 2023 - Present

3 years 5 months

Advisory board

AI Startup

Advising on business, product and strategy

Jan 2013 - Present

13 years 5 months

Managing Director

optiserv GmbH

Technology consulting for investors in the railway industry and in DAS technology
Coaching development teams in the design and certification of safety products for rail
Conducting technical assessments as part of certification processes
Providing external perspective in product development and support in business model creation and product ideation
Acting as interim manager or project leader during absences of incumbent roles; project leader for automation in logistics for a major German automobile manufacturer
Mentoring executives in technology companies

Jan 1998 - Dec 2022

25 years

CTO Frauscher Sensor Technology Group

Frauscher Sensortechnik GmbH

Development (1998-01-01 to 2000-12-31): Responsible for development of a sensor for Deutsche Bahn
Head of Customer Support (2001-01-01 to 2004-12-31): Built the department, oversaw test installations during approval, managed global customer service and commissioning support
Technical Sales Manager (2005-01-01 to 2007-12-31): Responsible for sales in Europe, Africa, Southeast Asia and Australia, as well as global technical support
Head of International Sales (2008-01-01 to 2010-12-31): Managed sales for countries in Europe, Africa, Southeast Asia and Australia and global technical support; project manager for CENELEC development projects covering technical and commercial aspects
Director Product Management (2011-01-01 to 2019-12-31): Responsible for product strategy, development projects and contracts
CTO (2019-01-01 to 2022-12-31): Responsible for global strategic technical topics, R&D and IPR

Industry Experience

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

Experienced in Manufacturing, Automotive, Professional Services, Telecommunication, and Information Technology.

Manufacturing

Automotive

Professional Services

Telecommunication

Information Technology

Business Area Experience

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

Experienced in Product Development, Project Management, Strategy, Customer Service, Research and Development, and Sales.

Product Development

Project Management

Strategy

Customer Service

Research and Development

Sales

Skills

Strategic Thinking, Leadership, Entrepreneurship, Quick Comprehension, Solution-Oriented, Railway Signaling Technology
Firse (Fellow Of The Institution Of Railway Signal Engineers)

Languages

German

Native

English

Advanced

Education

Oct 2019 - Jun 2023

LIMAK JKU Austrian Business School

MBA in Strategic Management and Corporate Entrepreneurship · Strategic Management and Corporate Entrepreneurship · Linz, Austria

Oct 2008 - Jun 2010

Fachhochschule Wels

Plant Engineering · Wels, Austria

Oct 2004 - Jun 2007

Fachhochschule Wels

Mechatronics and Business · Wels, Austria

...and 3 more

Certifications & licenses

FIRSE

Institution Of Railway Signal Engineers

Statistics

Experience

Total positions 5

Experience in Manufacturing 25 y

Avg length 8 y 8 m

Longest experience 24 y 11 m

Expertise

Recent roles Interim CTO, Critical Project Management, Advisory board

Main industries Manufacturing, Automotive, Professional Services

Main business areas Product Development, Project Management, Strategy

Qualifications

Highest degree Master

Certifications earned 1

Profile

Created

July 2025

Last Update

March 2026

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Have questions? Find more information here.

Where is Martin based?

Martin is based in Sankt Marienkirchen bei Schärding, Austria.

What languages does Martin speak?

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

How many years of experience does Martin have?

Martin has at least 28 years of experience. During this time, Martin has worked in at least 5 different roles and for 3 different companies. The average length of individual experience is 6 years and 8 months. Note that Martin may not have shared all experience and actually has more experience.

What roles would Martin be best suited for?

Based on recent experience, Martin would be well-suited for roles such as: Interim CTO, Critical Project Management, Advisory board.

What is Martin's latest experience?

Martin's most recent position is Interim CTO.

What companies has Martin worked for in recent years?

In recent years, Martin has worked for AI Startup, optiserv GmbH, and Frauscher Sensortechnik GmbH.

Which industries is Martin most experienced in?

Martin is most experienced in industries like Manufacturing, Automotive, and Professional Services. Martin also has some experience in Telecommunication and Information Technology.

Which business areas is Martin most experienced in?

Martin is most experienced in business areas like Product Development, Project Management, and Strategy. Martin also has some experience in Customer Service, Research and Development, and Sales.

Which industries has Martin worked in recently?

Martin has recently worked in industries like Manufacturing, Automotive, and Professional Services.

Which business areas has Martin worked in recently?

Martin has recently worked in business areas like Product Development, Project Management, and Strategy.

What is Martin's education?

Martin holds a Master in Strategic Management and Corporate Entrepreneurship from LIMAK JKU Austrian Business School.

Does Martin have any certificates?

Martin has 1 certificate: FIRSE.

What is the availability of Martin?

Martin is immediately available full-time for suitable projects.

What is the rate of Martin?

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