Stefan Behrendt, Product Manager in Darmstadt, Hesse, Germany
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Stefan Behrendt

Verified Expert  in Product Management

Product Manager

Darmstadt, Hesse, Germany
Toptal Member Since
May 17, 2019

Stefan is a product manager and strategist with more than 20 years of experience and a background in electrical engineering and business. He’s occupied management roles in product development, corporate strategy, operations, and consultation for Fortune 500s and startups alike. Stefan has successfully worked in various industries such as telecoms, enterprise software, energy, banking, industrial products, travel, and media/advertising.

Project Highlights

Calls2Do | iOS App for Call Management
Created the product concept, hired offshore developers (Vietnam, Ukraine, India) and successfully launched to the App Store.
Pics2Phone | iOS App to Download Photos from Dropbox
Developed the product concept, hired offshore developers, and successfully launched to the App Store.
vicarda | Cloud Service to Create vCards from Email Signatures
Developed the product concept, hired offshore developers (Vietnam), and successfully launched the SaaS service.


Work Experience

Startup Mentor | Coach

2012 - PRESENT
Startup Bootcamp
  • Product-managed startups.
  • Advised on processes, infrastructure, and SaaS setups.
  • Held workshops on the use of SaaS-based tools.
  • Connected startups with industry-specific networks.

Founder | Managing Partner

2011 - PRESENT
  • Consulted on business and technology issues working at the intersection of business and technology with startups and large enterprises.
  • Worked on digital strategy and business models, digital transformation, product management, business cases, digital marketing, process management, enterprise architecture, and the implementation of SaaS tools.
  • Focused on the following industries: telecommunications, energy, travel, banking, digital, publishing, advertising, and startups.
  • Developed software products (apps, cloud services).
  • Studied and published digital transformations.


2003 - PRESENT
Interactive Media CCSP AG
  • Worked on the supervisory board.
  • Handled the post-merger integration into T-Online AG.

Vice President Product Management Digital Services

2009 - 2011
Deutsche Telekom AG
  • Oversaw and handled international product management with a team of 100+ persons.
  • Managed the go-to-market strategy for the mass-market digital services.
  • Handled a range of products: digital customer self-care, email, online storage, security software, iOS and Android apps, smart home, paid content, and subscriptions.

Supervisory Board

2003 - 2011
atrada AG
  • Acted as the chairman of the supervisory board.
  • Transformed a B2C marketplace to a B2B software development and systems integration environment.

Member of the Supervisory Board of Swoodoo

2008 - 2010
Kayak (formerly Swoodoo AG)
  • Occupied the role of deputy chairman and fulfilled the corresponding duties.
  • Managed the exit to Kayak.

Supervisory Board

2007 - 2010
T-Online at GesmbH
  • Worked as a member of the supervisory board.

Supervisory Board

2007 - 2010
Scout24 Holding GmbH
  • Worked as a member of the supervisory board and fulfilled the corresponding duties.

Vice President Business Development and Partnering

2007 - 2009
Deutsche Telekom AG
  • Worked on business development, fostering partnerships, and managed the portfolio of Deutsche Telekom’s Internet Assets.
  • Partnered with startups and digital players like Google.
  • Managed the portfolios of companies like Scout24 (the largest provider of European classifieds) and Bild.T-Online (a German content portal).

Senior Vice President Strategy

2005 - 2007
T-Online International AG
  • Oversaw the strategy, mergers and acquisitions (M&A), and subsidiary management.
  • Developed and implemented strategies.
  • Performed subsidiary management and control, corporate governance, M&A, and post-merger integration.

Senior Manager of Subsidiary Management

2001 - 2005
T-Online International AG
  • Managed subsidiaries with a focus on strategy and performance management, corporate governance, organization, and personnel.

Senior Account Manager.

1999 - 2001
Crealogix AG (formerly abaXX Technology AG)
  • Oversaw and was responsible for direct sales to corporate accounts (key account management).
  • Managed and was in charge of international partner management (IBM, CSC).
  • Performed pre-sales consultations.

Senior Consultant

1996 - 1999
Roland Berger Strategy Consultants
  • Focused mainly on strategy, M&A, restructuring, and organizational design.
  • Specialized in engineered products and automotive industries.
  • Promoted to a junior consultant to a consultant and finally to a senior consultant position within two years.


1995 - 1996
University of Berne
  • Developed two-semester courses for MBA students on innovation technology and investment management.
  • Taught courses to MBA students (over 100 participants).
  • Supported and evaluated MBA students' theses.

Calls2Do | iOS App for Call Management

Created the product concept, hired offshore developers (Vietnam, Ukraine, India) and successfully launched to the App Store.

Calls2Do is an app that enables you to create a to-do list for phone calls that draws upon information taken from your iPhone's contact book and calendar.

Pics2Phone | iOS App to Download Photos from Dropbox

Developed the product concept, hired offshore developers, and successfully launched to the App Store.

Pics2Phone is an iPhone app that allows users to batch download a large selection of photos from Dropbox to the user's local photo app on their iPhone.

vicarda | Cloud Service to Create vCards from Email Signatures

Developed the product concept, hired offshore developers (Vietnam), and successfully launched the SaaS service.

vicarda is a cloud service that creates address book entries (vCards) from email signatures which can be added to any address book (iOS, Android, Google Mail, Outlook, and more).
1995 - 1995

Studies in Business Administration

Technical University of Dresden - Dresden, Germany

1994 - 1994

A Master's Thesis in Electrical Engineering and Software

Nagoya University - Nagoya, Japan

1989 - 1994

Master's Degree (Diplom-Ingenieur) in Electrical Engineering and Business Administration

Technical University of Darmstadt - Darmstadt, Germany


Project Management Professional (PMP)

Project Management Institute (PMI)


Certified Scrum Master

Scrum Alliance


Google Slides, Excel 2016, Zapier, Evernote, Microsoft Word, Microsoft Outlook, Trello, Google Docs, Wrike, Jira, Asana, Microsoft Project, Slack, Confluence, Google Data Studio, Microsoft Access, Balsamiq Mockups, Google Analytics

Industry Expertise

Energy, Telecommunications, Banking & Finance, Venture Capital, Real Estate, Residential Real Estate, Premium Content Subscriptions, Insurance Technology (Insurtech), Utilities, Public Transportation, Connected Cars, Aircraft & Airlines, Healthcare


Requirements Analysis, B2B2C, Marketplace Platforms, Low Code, Agile Product Management, Agile Workflow, Business to Business to Consumer (B2B2C), Database Schema Design, Agile, Database Design, Design Thinking, Scrum, HIPAA Compliance


Enterprise Resource Planning (ERP), iOS 11, Webflow CMS


Enterprise SaaS, System Process Mapping, Build/Buy Analysis, SaaS, CRM Systems, Project Planning, Functional Requirements, Business Requirements, IT Business Analysis, Product Owner, Stakeholder Management, B2B, Product Vision, Automation, Product Ownership, Microsoft PowerPoint, Product Management, Strategy, Business Consulting, Software, Business, Project Management, Software as a Service (SaaS), Freelancing, Digital Product Management, Business Models, QuickBase, Customer Relationship Management (CRM), Digital Transformation, Management Consulting, Classifieds Submissions, Email, Apps, Business Cases, Digital Strategy, Portfolio Management, Market Research & Analysis, Digital Services, Platforms, Google Sheets, Virtual Work, Product Development, Business Analysis, Requirements, Product Strategy, Product Roadmaps, Go-to-market Plans, User Research, Product Design, Product Marketing, Product Frameworks, Innovation, Product Discovery, Product Delivery, SaaS Product Management, Technical Product Management, Product Launch, Travel Product Manager, Fashion & Beauty, Consulting, Product Conceptualization, Certified Scrum Product Owner (CSPO), Product Consultant, Digital Marketing Product Manager, Product Portfolio Manager, Enterprise Software, Business Strategy, Business Unit Strategy, New Business Development, Process Optimization, Business Intelligence (BI), App Product Management, Business to Business (B2B), Standard Operating Procedures Development, Workflow, Accounting, Controlling, Salesforce, CRM Design, CRM Configuration, Cloud, Scope of Work, Discovery, Training Content, Training Videos, Training & Training Content Development, Business Systems Analysis, APIs, Vendor Management, Software Implementation, Software Integration, System Requirements, Mobile Apps, Minimum Viable Product (MVP), Internet of Things (IoT), Travel & Leisure, Team Management, Business Model Canvas, Industrial Internet of Things (IIoT), Finance, Organizational Design, IT Strategy, Lean Canvas, Interim Management, Digital Media, Databases, Mobile, eCommerce, Payment Networks, Connected Devices, Smart Homes, Offshoring, Startups, Mergers & Acquisitions (M&A), Fintech, Business Process Automation, Process Management, Business Process Management (BPM), Requirements & Specifications, Lean Startups, Enterprise Architecture, Operations, Operations Management, Lead Management, Commercial Management, Travel, Proptech, Value Proposition, Structure & Organizational Design, Post-merger Integration, Data Entry, Training, Windows, Macros, Visual Basic for Applications (VBA), Remote Work, Digital Marketing, Microsoft Teams, Genetic Algorithms, Cloud Storage, Dropbox, Enterprise, Customer Acquisition, Launch Strategy, New Product Development, Business Development, Feature Prioritization, Discovery Workshops, Best Practices, Data Management, User Stories, Opportunity Assessments, Client Portals, PDF, Artificial Intelligence (AI), Pitch Decks, Technical Business Analysis, Scrum Master, Private Banking, Deep Neural Networks, Machine Learning, Email Marketing, Offshore Team Management, Android, Customer Success, Design, Data Analytics, Railway, Customer Service, Call Centers, Data Privacy, Marketing Platforms, Bubble, Airtable, C++, Visual Basic, HTML, Fuzzy Logic, Smart Grid, Design Sprints

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