Sebastian S.-Freelance Consultant External Workforce Procurement
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Experience
Freelance Consultant External Workforce Procurement
Carl Zeiss AG
- Sourcing of contractors, temp labour and direct-search suppliers
- Advisor to procurement & HR in change project
Interim Manager Strategic Insurance Procurement & Professional Services
Zurich Insurance Germany
- Strategic sourcing for Germany
- Supplier and tender management in daily business
Interim Manager Category External Workforce & HR Services
LeadecFM BV & Co. KG
- Operational handling of temp labour category
- Advisor to management board for change in external workforce strategy
Freelance Consultant Procurement of External Workforce
Durch Denken Vorne Consult GmbH
- Strategy-analysis and change external workforce
- Tender Mgmt and negotiations professional service suppliers
- Supplier Mgmt, KPI-setup and monitoring in a customized VMS-environment
- Expert for procurement-compliance
Speaker and Trainer for Professional Services and HR Procurement
TÜV Saarland Seminare | DEKRA Akademie | TA Wuppertal
- Cost-saving leverages in purchasing temping and contracting agencies
- Compliance and contractual risk management VMS-based
- Sourcing-Systems, Single / Master Vendor / MSP / Neutral and On Site
- How to plan and approach tenders
External Project Manager Professional Services Procurement
KPMG AG Wirtschaftsprüfungsgesellschaft
- Stabilize as firefighter for all operational / tactical urgent tasks within newly established PS-department including the challenging context of SAP Ariba rollout
- Ensure compliant contracts for IT-services, HR-services, marketing, consulting
- Development / Design and optimization of procurement processes
- Train the existing staff and onboard new joiners of PS-department
- Responsible contact for Senior Mgmt and the Partners in Germany
Consultant & Interim Mgr for FlexHR procurement & management
STRYKERConsulting Flex HR Management
- Strategic sourcing, procurement and implementation of supplier management (VMS)
- Temping / Contracting / Projects – professional services procurement in all aspects
- Build-up „TarifTool for cost-transparency in temping“ Temporary Employment
- Advice on „Make or Buy“ internal vs external workforce solutions
Commercial Manager Germany & Freelance (Inhouse) Consultant
YoungCapital B.V. / YoungCapital Germany
Regional Commercial Operational Manager (Central Europe - CE)
Leica Microsysteme Vertriebs GmbH (Part of Danaher Corp.)
- Responsible for the commercial team in CE esp. proposal + tendermanagement (EU Public Tendering Rules)
- Direct reportings to the commercial director of Europe
- Liaise with relevant stakeholders within the decentralized matrix organization
- Interim takeover of tasks for vacant position of the country manager D-A-CH
Management Consultant
SOICON Management Consulting GmbH & Co. KG
- Analysis, reporting and optimization multi-project mgmt
- Contractual setup for procurement of consulting & IT-freelancers
- Reporting of KPIs out of SAP and manipulate in Excel for decision papers
Legal Inhouse Counsel Commercial, Contract & Labour Law
STUDITEMPS GmbH
Account & Projects Manager Key Accounts, Master Vendor Structures
STUDITEMPS GmbH
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Professional Services, Manufacturing, Education, Healthcare, and Insurance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Procurement, Human Resources, Sales, Project Management, Operations, and Business Intelligence.
Summary
- Experienced procurement professional with a business law background
- Proven track record as expert in the indirect categories Professional Services, Marketing, HR Services, strategical – tactical – operational
- Complementary stages from the angles of service providers, in commercial positions and supplier management
- Managed projects in international matrix-organisations with the ability to communicate into all levels
- Strong analytical skills combined with a high social sense for building up relations in regards to an effective stakeholder-management
- Experienced with technology-driven-processes in procurement - i.a. SAP MM / ARIBA, COUPA - and a keen perception of new IT-Environments
- Professional negotiations skills due to the background + proven track record in sales and business development for key accounts
- Very high motivation and operational readiness
- Positive thinker with a sense of humor even in challenging situations
Skills
- Proficient Usage Of Ms Office (Esp. Excel)
- Google Suite
- Crms I.A. Salesforce.Com, Hubspot
- Erps I.A. Sap R3, Mm, Bw
- Procurement-Specific Apps Like Ariba And Coupa
Languages
Education
University of Siegen
Diplom-Wirtschaftsjurist, German diploma · German and European Business Law · Siegen, Germany
Statistics
Experience
Global experience
Expertise
Profile
Frequently asked questions
Have questions? Find more information here.
Sebastian is based in Cologne, Germany and can operate in on-site, hybrid, and remote work models.
Sebastian speaks the following languages: German (Native), English (Advanced).
Sebastian has at least 16 years of experience. During this time, Sebastian has worked in at least 12 different roles and for 11 different companies. The average length of individual experience is 1 year 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: Freelance Consultant External Workforce Procurement, Interim Manager Strategic Insurance Procurement & Professional Services, Interim Manager Category External Workforce & HR Services.
Sebastian's most recent position is Freelance Consultant External Workforce Procurement at Carl Zeiss AG.
In recent years, Sebastian has worked for Carl Zeiss AG, Durch Denken Vorne Consult GmbH, TÜV Saarland Seminare | DEKRA Akademie | TA Wuppertal, and STRYKERConsulting Flex HR Management.
Sebastian is most experienced in industries like Professional Services, Manufacturing, and Education. Sebastian also has some experience in Healthcare and Insurance.
Sebastian is most experienced in business areas like Procurement, Human Resources, and Sales. Sebastian also has some experience in Project Management, Operations, and Business Intelligence.
Sebastian has recently worked in industries like Professional Services, Education, and Manufacturing.
Sebastian has recently worked in business areas like Human Resources and Procurement.
Sebastian attended University of Siegen for German and European Business Law.
Sebastian is immediately available full-time for suitable projects.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
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 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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