When your business model no longer holds, new products fail in the market, and digital transformation stalls – I bring clarity, direction, and deliver impactful execution.
Many companies are realizing that they can't continue as they are. Despite strategy workshops, investments in digitalization, and ambitious roadmaps, the breakthrough remains elusive.
New business models fail due to implementation. Products fail to meet demand. Digital services fail to add value. Leadership and organization become lost in day-to-day business. This turns transformation into an expensive experiment.
This is where I come in: As an experienced interim manager, I lead product and business units, develop digital business models – and make transformation feasible, economical, and effective.
Rethinking existing business – for new markets, new revenues, new relevance
Digital services that generate revenue and complement existing business
I take responsibility, relieve your managers and get projects out of the deadlock
Your company is ready to connect again – strategically, structurally and organizationally
Technology combined with real customer proximity – so that new offers are not only possible, but marketable
Strengthened leadership, culture and collaboration – because sustainable change starts within
My name is Theresa Tenneberg. For two decades, I’ve helped companies unlock new revenue potential and turn transformation into measurable business impact – whether as a consultant at Roland Berger, as CDO at TÜV Süd, or as Senior Vice President of Product at a private equity-led SaaS company.
What drives me: The interplay between people, technology, and business strategy. The conviction that organizations can achieve more – when structures are clear, products are relevant, and leadership is effective.
Today, I support mid-sized companies and portfolio firms in reshaping their business models, turning innovation into market-ready solutions, and enabling sustainable scaling.
- Theresa Tenneberg | CEO I CPO I CDO
Theresa coached me through my first 6 months as VP of Product at a new company, and working with her gave me the confidence and clarity I needed to succeed quickly. She was instrumental in helping me craft a 30-60-90 day plan that prioritized high-impact wins while I navigated the complexity of a new organization.
I appreciated Theresa's thoughtful approach to bridging the gap between strategy and execution. Her guidance was critical as I established new processes, prepared for my first board presentations, and structured the team for growth. Her coaching allowed me to accelerate my ramp-up time and establish trust with stakeholders much faster than I could have alone. I highly recommend Theresa.

Vice President Product @ SaaS B2B company
We have worked with Theresa twice during critical phases in our company: first as part of an important organizational development process, and later to support the build-up of our software business. In both mandates, she initiated significant changes with great clarity, structure, and strong execution. At the same time, she strengthened our leadership team and encouraged entrepreneurial thinking. Together with our team, she laid the foundation for a viable software business – with a clear business model, a structured product management approach, and an integrated go-to-market concept. I value Theresa for her strategic strength as well as her ability to address complex topics in a pragmatic and solution-oriented manner. Working with her was extremely valuable – I would engage her again at any time.

CEO & Managing Shareholder @ Sensor-Technik Wiedemann
Working alongside with Theresa for four years, both of us reporting directly to the CEO of a €600M+ business division, has been one of the most inspiring and professionally rewarding experiences of my career. She is the rare combination of hands-on pragmatist and visionary leader — someone who not only sees what's next but knows exactly how to get there. As an example, together, we conceived and launched a groundbreaking digital service for the Energy Industry — a completely new category of offering, both in terms of business model and technical architecture. Under her strategic leadership, this innovation not only achieved an exceptionally high operating result but also set a new benchmark for digitalization in a highly traditional industry. It was bold. It was complex. And she made it happen. What impressed me most? Her ability to translate abstract strategy into executable action — quickly, decisively, and collaboratively. She moves seamlessly from Board-level discussions, building long-term company development strategies, to operational implementation, always with a strong sense of purpose and integrity. In a global matrix organization, she is a great to have senior servant Leader. Would I recommend her? Without hesitation — and without limitation. Any company serious about driving innovation, navigating digital transformation, integrating AI in daily business or shaping long-term strategic growth would be lucky to have her on board as part of the Leadership team. She's not just an experienced senior manager. To me, she’s a force multiplier.

CTO and Global Manager AIM @ TÜV SÜD Industry Service
Theresa was part of our leadership team for several years as Chief Digital Officer and played a key role in shaping the strategic development of the Industrial Services division. She was responsible for developing our Strategy 2025 and for building and steering our digital and innovation initiatives. With persistence and clarity, she consistently advanced strategic topics – even in complex coordination processes. Her contribution focused particularly on developing new business approaches, aligning digital services with economic goals, and embedding these topics strategically within the organization. Working with her was characterized by reliability, intellectual depth, and professional collaboration within the leadership team. I experienced Theresa as a structured and strategically strong leader who drives change effectively – with a clear focus on organization and outcomes. I highly recommend her for senior roles in strategy, digital transformation, and innovation.

CEO Division @ TÜV SÜD Industry Service
Theresa is a fantastic leader. I worked alongside her supervision for 3 years. Her management style is innovative, inspirational and invaluable. She has done an excellent job building a solid strategy and innovation roadmap for one of TÜV SÜD's largest divisions. She sets realistic goals and assigns appropriate deadlines for achieving them. She is also a good listener who pays close attention to details. Her grasp to the needs of stakeholders is exceptional. This creates positive energy within the teams and projects, which ensures that everyone stays focused on their work and brings their best.

Director Innovation @ TÜV SÜD Industry Service
I have worked with Theresa as my mentor for two years in my role as Head of Product at F24 AG and have enjoyed my time with her. Theresa is a very experienced leader with a broad background in digital transformation, innovation and product management. She has been responsible for a large product portfolio and has driven a common product vision and strategy with great commitment and clarity. She has always helped her teams to set the right priorities and focus. I can highly recommend working with Theresa, I particularly like the fact that she leads at eye level and always has an open ear for the ideas of her team members. She always strives to empower her teams!

Vice President Product @ F24 AG