Sebastian (Dipl.-ing.) Müllers
Consultant
Experience
Consultant
NextGen
Supported the founding team on structure and financing issues
Developed a viable business model and service portfolio
Introduced initial commercial processes (controlling, cash flow planning, contract structure)
Mentored and coached on pitch deck, funding, and go-to-market
Defined a clear financial and control structure for the early stage
Successfully prepared pitch deck and investor presentation
Implemented planning and controlling tools for the seed phase
Boosted the founding team with external business expertise
Partner
F&P Executive Solutions AG
- Industry / client sectors: manufacturing, services, technology-driven mid-sized businesses, corporations
- Services: partnership for interim management and consulting in transformation, turnaround, and growth situations
- Size: over 50 partners operating nationally and internationally
- Responsibilities: mandates focused on restructuring, scaling, and operational excellence in production, controlling, and performance management
Founder & Owner
Self-Employed – Sebastian Müllers
- Industry / client sectors: start-ups, mid-sized businesses, technology-driven industry
- Services: strategy consulting, operational scaling, digitization of control processes, restructuring support
- Size: sole proprietorship with a project-based partner network
- Responsibilities: full mandate responsibility from acquisition to implementation with a focus on clarity, speed, and sustainable structural change
Head of Assembly
HelloFresh SE
- Scaled assembly lines during ramp-up phase
- Automated processes
- Led a team of 30 direct reports
- Introduced quality and control systems
- Reduced absenteeism significantly from over 30% to under 9%
- Managed budget responsibility
Interim Manager
SELANO UG
- Restructured and digitized the controlling function
- Led operational reorganization and improved efficiency
Interim Manager
BB-Holding GmbH
- Operational control of the investment structure
- Strategic administration and control of operational holdings
Interim Manager
ATL GmbH
- Operational control of the investment structure
- Executive management and commercial leadership
- Building new business areas
Interim Manager
FROST INOX GmbH
- Turnaround management
- Introduction of the quality management system according to ISO 9001
- Process optimization
- Sales development
Consultant PLM / Industry 4.0
Siemens Industry Software GmbH & Co. KG
- Implementation of more than 15 PLM projects
- Introduction of digital control processes
- Advising clients on efficiency and cost optimization
Summary
As an interim manager, I support companies through challenging phases—from operational scaling and financial restructuring to strategic realignment in crisis situations. With over ten years of leadership experience—as managing director, production manager, and interim manager—I help mid-sized companies and corporations implement deep transformations. I bring technical know-how as a mechanical engineer, solid skills in controlling and management, and intercultural experience. My focus is on structured analysis, clear progress, and consistent execution—hands-on, decisive, and focused on what really matters.
Skills
Current Consulting Focus: Scaling, Restructuring, Operational Reorganization
Over 10 Years Of Leadership Experience As Managing Director, Interim Manager, And Production Manager
Many Years Of Experience In Financial Controlling, Planning, Manufacturing, And Change Management
Expertise In Digitizing Control Processes And Driving Operational Excellence
Industry Experience: Manufacturing, Food, Technology-driven Mid-sized Businesses
International Work: Dach Region, Europe
Consulting Projects In Restructuring, Operational Scaling, And Digital Transformation
Interim Management Positions: Managing Director, Production Manager, Project Lead With Up To 1,500 Employees, Mainly Up To 30 Direct Reports
Proven Successes In Site Setup, Production Optimization, And Efficiency Improvements
Cost Reduction, Budget Responsibility, And Performance Management
Leading Teams And Coaching Through Change Processes
Implementation Of Digital Controlling And Management Systems
Erp And Tool Systems, Including Sap, Datev, Ms365
Working Style Shaped By Analytical Thinking, Structured Methods, And Pragmatic Execution
A Personality Marked By Resilience, Decisiveness, And A Confident Presence—even In Critical Situations
Structured, Goal-oriented, And Pragmatic—with A Strong Focus On Execution
Situational Leadership Style Defined By Clarity, Reliability, And A Hands-on Approach
Fast To Get Up To Speed, Highly Resilient, Comfortable Handling Complex Challenges
Microsoft 365, Ms Teams, Powerpoint, Excel (Including Powerquery), Outlook
Erp Systems: Datev, Custom Industry Solutions (Manufacturing/controlling)
Tech-savvy With A Knack For Efficiency Solutions
Sports Enthusiast—triathlon, Skiing, Running
Member Of Ddim – Dachgesellschaft Deutsches Interim Management E.v.
Languages
Education
Niigata University
Master of Science · Mechanical Engineering / Laser Technology · Niigata, Japan
Otto von Guericke University
Diploma in Mechanical Engineering · Mechanical Engineering · Magdeburg, Germany
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