Executive Interim
Management
Bridge leadership vacancies, align teams and take operational responsibility. With a clear assignment and a planned handover.
Explore services ↗Interim Management · Consulting · Sparring
Strategy. Execution. Leadership.
Shape the energy transition.
Build competitiveness.
Take responsibility for delivery.
I connect technology, business development and people. For energy, industrial and mobility businesses – locally rooted, globally connected and supporting you at pivotal moments.
Personally accountable – working with experienced partners where the assignment calls for it. For corporations, mid-sized businesses, start-ups, scale-ups and hyper-scale-ups.
Berlin & international
Around 30 yearsProfessional experience, including
apprenticeship and site work
apprenticeship and site work
Up to 100People led –
locally and internationally
locally and internationally
Technology + businessFrom electrical trade to international
leadership responsibility
leadership responsibility
Where I can help
Provide direction.
Take responsibility.
When leadership is needed, new markets emerge or change needs to happen: I work with your team on the next viable solution.
Executive Interim
Business
Development
Assess markets, sharpen offerings and win customers. Combine technical understanding with an actionable market entry strategy.
Explore my experience ↗Management
Consulting
Advance strategy, business development and transformation. Clarify priorities and turn decisions into an actionable roadmap.
Explore management consulting ↗Personal
1:1 Executive Sparring
An experienced sounding board for business leaders and founders. Reflect on strategic questions, weigh options and clarify next steps.
Explore executive sparring ↗Who I support
Your vision. Your challenge. My contribution.
For founders and decision-makers who want to bring ideas to life, shape growth and drive change – from the initial vision through building and scaling a business to developing established companies.
Large corporations & mid-sized businesses
Strengthen leadership. Deliver change.
Add leadership capacity, develop business areas and take responsibility for market entry and transformation.
Interim management & servicesStart-ups, scale-ups & hyper-scale-ups
Turn ideas into viable growth.
Sharpen business models, develop partnerships and sales, and build the structures needed to scale.
Business development & growthInvestors & project developers
Assess opportunities with clarity.
Evaluate markets and technologies, validate opportunities and develop the commercial foundations of projects.
Strategy & project developmentWhere is your business or product today?
From vision through start-up, scale-up and hyper-scale-up to maturity and renewal: use the model to explore the next stage and the support it needs.
Tap the chart to open the zoom view. Enlarge the chart and scroll to explore it.
- Market entry
- The offering reaches the market; business development begins.
- Operating cash flow = 0
- Cash inflows and outflows from ongoing operations balance.
- Payback
- Cumulative cash flow returns to zero: the initial cash outflows have been recovered.
- Renewal / new growth
- New offerings or markets can open a further phase of growth.
Why now
Change needs
people who act.
The energy transition, new technologies and international competition are changing business models. Yet time, capacity or leadership experience for delivery are often in short supply. This is where executive interim management comes in: with experience, accountability and a clear assignment.
Experience behind the offer
Understand technology.
Develop business.
Selected career milestones show how I connect technical expertise, new markets and international collaboration.
Maschinenfabrik Reinhausen
Validate new markets and product ideas for high-power charging, AC/DC battery converters, DC/DC converters and DC microgrids.
ELPRO and the GUW plus project
GUW+ is a flagship R&D project in the rail sector, connecting railway power, electric bus charging, storage and energy management.
Solar PV: from launch to international leadership
I built the solar PV team and business from scratch and later led it across Europe and worldwide within the GE Power Conversion matrix organisation.
What responsibilities have I taken on, and how can that experience support your challenge? Explore projects, international leadership roles and references on the experience page.
Explore projects & experience ↗About REEEM & Partner
Personal responsibility. Shared expertise.
Personal responsibility and the right expertise for your assignment: the partner film introduces REEEM and collaboration across our network. Visit the REEEM page to learn more about my profile, our capabilities and how we work.
Meet REEEM & Partner ↗REEEM & Partner in 1:32 minutes – watch it right here. You can find my personal introduction video at the top, next to my portrait.
1:32 minutes · English · with music · full screen available
Connect on LinkedIn ↗Understand & explore
Knowledge to inform your next decision.
Explore the topics behind your project through market analysis, technical guidance and sources for further research.
MARKET INSIGHTS
Understand the business of the energy transition.
How do technology, markets and economics connect? Explore analysis of battery storage, integrated energy systems and their business models.
Explore analysis & Market Insights ↗Battery storageMarkets & value creationProject economicsIntegrated energy systems
Knowledge & terminology
Make sense of technology and management topics. The knowledge hub provides in-depth articles; the freely accessible glossary explains technical terms.
Explore the knowledge hub ↗Open the glossary ↗Funding & rules
Find guidance on funding programmes, standards and regulatory requirements. Browse the preview and request extended access if you would like to explore further.
Explore funding ↗Explore standards & rules ↗News & events
Market news and industry events as a starting point for research and professional exchange.
Browse market news ↗Explore the events calendar ↗The knowledge hub, funding and standards directories offer an initial preview. You can request extended access directly.
Insights & encounters
Experience grows
through exchange.
More perspectives and professional exchange: Mario Willatowski on LinkedIn ↗
Let's talk
What would you like
to move forward?
Your challenge is the starting point. Together, we clarify the next step.