Sebastian Müllers
General Manager ⦿ Entrepreneur ⦿ Interim Manager – Executive with Entrepreneurial Mindset
Consulting mandate: strategic support & commercial structuring
NextGen (Start-up)
- HealthTech / platform economy
- <10 employees, revenue: pre-revenue phase
- Supported the founding team on structural and financing questions
- Developed a viable business model and service portfolio
- Introduced initial commercial processes (controlling, liquidity planning, contract structure)
- Mentored and sparred on pitch deck, funding, and go-to-market
- Reporting line: managing director (founder team)
- Clear financial and management structure for the early company phase
- Successfully prepared pitch deck and investor presentation
- Implemented planning and control tools for the seed phase
- Strengthened the founding team with external business expertise
Partner
F&P Executive Solutions AG
- Partnership of management consultants and interim managers
- Industries / client sectors: industry, services, technology-driven mid-sized companies, corporations
- Services: interim management & consulting in transformation, turnaround, and growth situations
- Size: >50 partners, operating nationally & internationally
- Responsibility: mandates focused on restructuring, scaling, and operational excellence in production, controlling, and performance management
Founder & Owner
Sebastian Müllers – Beratung & Interim Management
- Consulting and interim management with a focus on transformation, scaling, and controlling in mid-sized industrial companies
- Industries / client sectors: startups, mid-sized companies, technology-driven industry
- Services: strategy consulting, operational scaling, digitization of control processes (UNS), restructuring support
- Size: sole proprietorship with a project-based partner network
- Responsibility: end-to-end project responsibility from acquisition to implementation – focusing on clarity, speed, and sustainable structural change, developing custom solutions for transformation and restructuring processes
Head of Assembly
HelloFresh SE
- FoodTech / fresh logistics
- scaling project
- market leader in e-commerce for meal kits, Barleben site as a production and logistics center
- up to 1,500 employees at the site
- scaled the assembly lines during ramp-up
- process automation
- team leadership (30 direct reports)
- implemented quality and control systems
- significant reduction in absenteeism (>30% to <9%)
- budget responsibility
Leadership responsibility: restructuring & digitization of controlling
SELANO UG
- production-related services
Interim Mandate: Operational Management of Investment Structure
BB-Holding GmbH
- Investment management
- Industries / Client sectors: Investments in the industrial mid-market
- Services: Strategic management and control of operating investments
- Size: Holding structure with multiple subsidiaries
- Responsibilities: Executive management, investment management, restructuring and strategic development
Interim Mandate: Strategic Realignment & General Management
ATL Ladenbau GmbH
- Manufacturing
- Industries / Client sectors: Shopfitting, aquarium systems, construction & interior design
- Services: Manufacturing and installation of aquariums/terrariums, shopfitting elements, fiberglass fabrication, glazing, carpentry, and drywall construction
- Size: Up to 50 employees
- Responsibilities: General management, commercial management, development of new business units, budget responsibility, client development, operational management of production and installation
Leadership Role: Turnaround & ISO Certification
FROST INOX GmbH
- Metal processing
- Industries / Client sectors: Machinery and plant engineering, food technology, water treatment, CHP plants, shipbuilding
- Services: Welded assemblies, tank and plant construction (stainless steel, aluminum, steel), locksmithing, laser and bending technology
- Size: Mid-sized manufacturing company with over 50 employees
- Responsibilities: Executive management, commercial and technical leadership, implementation of ISO 9001 quality management system, process optimization and sales development
PLM / Industry 4.0 Consultant
Siemens Industry Software GmbH & Co. KG
- Market leader in industrial software development & PLM system integration.
- Industries / Client sectors: Mechanical engineering, automotive, manufacturing
- Services: Consulting and implementation of PLM and control solutions
- Size: Corporate group / global presence
- Implementation of over 15 PLM projects
- Introduction of digital control processes
- Client consulting on efficiency and cost optimization
As an interim manager, I support companies in challenging phases – from operational scaling to financial restructuring to realignment in crisis situations. With over ten years of leadership experience – including as managing director, production manager, and interim manager – I guide mid-sized companies and corporations through deep change processes. I bring technical know-how as a mechanical engineer, solid understanding of controlling and management, and intercultural experience. My focus is on structured analysis, clear progress, and consistent execution – hands-on, decisive, and with an eye for what matters.
Current consulting focus: scaling, restructuring, operational reorganization
Long experience in financial management, controlling, manufacturing, and change management
Expertise in digitizing control processes and operational excellence
Industry experience: industry, food, technology-driven mid-sized companies
International work: DACH region, Europe
Consulting mandates in restructuring, operational scaling, and digital transformation
Assignments as interim manager: managing director, production manager, project responsibility with up to 1,500 employees, primarily up to 30 direct reports
Proven successes in site setup, production optimization, and efficiency improvements
Cost reduction, budget responsibility, and performance management
Team leadership and coaching in change processes
Implementation of digital controlling and management systems
ERP and tool systems, including SAP, Datev, MS365
Work style shaped by analytical thinking, structured approach, and pragmatic execution
Personal traits marked by resilience, decisiveness, and confident presence – even in critical situations
Niigata University
Master of Science · Mechanical Engineering / Laser Technology · Niigata, Japan
Otto von Guericke University
Diploma Engineer (Univ.) · Mechanical Engineering · Magdeburg, Germany
Similar Freelancers
Discover other experts with similar qualifications and experience
- English
- Deutsch
2025 © FRATCH.IO GmbH. All rights reserved.