Sebastian (Ll.m.) Müller-COO/CAO; Managing Director, Authorized signatory, General Counsel
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Experience
COO/CAO; Managing Director, Authorized signatory, General Counsel
Joyn GmbH
- Aligned organizational objectives with company mission to increase business growth and integrate work strategies.
- Set up three departments and operational structures from scratch and refined organizational structure to consolidate and streamline to establish top-performing groups while decreasing costs.
- Oversaw and guided all business-wide changes to modernize procedures and organization.
- Implemented a restructuring program to turn around the company (25-30% of the workforce), advising management and shareholders, conducting negotiations with the workers’ council.
- Managed a post-merger/acquisition integration of maxdome into Joyn.
- Accomplished a freelancer ramp down project of 90 freelancers.
- Set up a second site in London as Managing Director of Joyn Ltd and drafted the formal requirements of cross-country business operations.
- Moved company headquarters office and shut down the former office.
- Drafted and conducted COVID-19 adjustments and organized post-COVID set up.
- Successfully conducted “Subletting office” project of half of the office space.
- Accompanied a new product launch of Joyn.
- Frameworked Human resources departments with knowledge base, staff management, personnel development and career framework.
- Developed and instituted a new compliance system to ensure and promote company culture; instituted new compliance system with twelve policies and respective processes.
- Oversaw daily operations in departments and coordinated with managers on a weekly basis.
- Negotiated and drafted high-impact contracts with business partners, clients and vendors, saving the company several million Euros, such as the purchase of the brand 'Joyn'.
- Managed five team leads focusing on improving initiatives.
- Coordinated and implemented effective training for over 250 professionals to improve processes.
- Attended all shareholder meetings as company secretary.
General Counsel, Member of the Management Team, Head of Legal
Bench
- Advised COO, CEO and management on all legal and business decisions.
- Realized an extensive re-organization program after acquisitions by a venture capital.
- Reviewed and advised leadership team.
- Completed high-impact projects with a high level of accuracy.
- Frameworked HR department.
- Negotiated and drafted all business-impact contracts.
Legal Counsel
NTT – Security
- Worked with management to maintain expertise and provide the best advice, minimizing risk exposure through careful management advice on business operations and strategic plans within Europe.
- Acted as legal authority for business matters.
- Conducted trainings for the entire company.
Legal Counsel
PVH
- Set up legal framework for sales in Europe, in particular franchise system for Tommy Hilfiger, shop-in-shop systems and reseller systems.
- Legally led complex e-commerce business development.
- Represented the interests of the company in negotiations.
- Managed corporate and legal transactions, coordinating documents.
Lawyer – IT Law
Bird & Bird LLP
- Advised clients on legal matters such as major IT law tenders and negotiations.
- Supported client teams in developing and bringing to market new technologies and product offerings by helping to identify and resolve privacy, IP, go-to-market and license compliance issues.
- Prepared and reviewed high-importance contracts and legal documents in IT matters.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Media and Entertainment, Professional Services, Banking and Finance, Fashion, Retail, and Information Technology.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Legal, Human Resources, and Operations.
Summary
Accomplished and energetic COO/CAO with a history of achievements in executive, administrational and operational management, and a focus on lean enterprise management.
Expert with proven business experience with over ten years in tech, media, and commerce, fostering interpersonal relations and achieving business practice improvements, restructuring and turnaround.
Skills
- Working Knowledge Of Company Core Infrastructure, People, Legal And Budgets, Technology Set-Up.
- Excellent Reputation For Resolving Problems.
- Executive With Background In Legal, Hr, Compliance, Client Relations, Negotiation, And Management.
- Well Experienced In Organizational Leadership And Executive Administration With Strong Leadership Abilities By Combining Knowledge With Experience.
- Strategic Planning Abilities, Background In Change Management, Re-Organization, And A Forward-Thinking Mindset.
- Planning And Execution
- Operations Oversight
- Teamwork And Collaboration
- Interpersonal Communication
- Cost Savings And Reduction
- Personnel Development
- Change Management
- Business Admin
- Negotiation
- Dev-Ops
- Staff Management
- Business Development
- Dependable And Responsible
- Acquisition Integration
- Budgeting
- Training And Development
- Consulting
Languages
Education
Unknown
Second State Examination: Attorney, Judge · Law · Germany
Griffith University
Master of Laws, Negotiation & Law · Law · Brisbane, Australia
University of Freiburg
State Examination: Laws · Freiburg im Breisgau, Germany
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Sebastian is based in Munich, Germany.
Sebastian speaks the following languages: German (Advanced), English (Advanced), Portuguese (Intermediate), French (Elementary).
Sebastian has at least 17 years of experience. During this time, Sebastian has worked in at least 4 different roles and for 5 different companies. The average length of individual experience is 3 years and 4 months. Note that Sebastian may not have shared all experience and actually has more experience.
Based on recent experience, Sebastian would be well-suited for roles such as: COO/CAO; Managing Director, Authorized signatory, General Counsel, General Counsel, Member of the Management Team, Head of Legal, Legal Counsel.
Sebastian's most recent position is COO/CAO; Managing Director, Authorized signatory, General Counsel at Joyn GmbH.
In recent years, Sebastian has worked for Joyn GmbH.
Sebastian is most experienced in industries like Media and Entertainment, Professional Services, and Banking and Finance. Sebastian also has some experience in Fashion, Retail, and Information Technology.
Sebastian is most experienced in business areas like Legal, Human Resources, and Operations.
Sebastian has recently worked in industries like Media and Entertainment.
Sebastian has recently worked in business areas like Human Resources, Legal, and Operations.
Sebastian holds a Master in Law from Griffith University.
Sebastian has 1 certificate: Certificate Data Protection Officer.
The availability of Sebastian needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 6 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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