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Sebastian Hoppe

Freelance SAP S/4HANA Procurement Consultant (P2P)

Bad Driburg, Germany

Profile: Since 2015 I have been shaping procurement processes around SAP – first at a solution provider, then in consulting and, since 2020, as a freelancer. My focus is procure-to-pay in SAP S/4HANA and SAP MM and the integration of e-procurement solutions. I support projects from requirements analysis through testing and cutover to go-live and beyond.

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Portrait of Sebastian Hoppe
Years in procurement IT

11 and more

since 05/2015
Projects

16

1 ongoing
Industries

10

Corporate groups and public sector
Years freelancing

6 and more

since 09/2020

Projects

Procurement and e-procurement projects, newest first. Clients are named by industry only.

2026

  1. SAP S/4HANA Procurement Consultant / P2P (Post-Go-Live, Release 2)

    Ongoing

    German federally owned company · 06/2026 – present

    Functional support of post-go-live and a follow-up release in the S/4HANA programme of a German federally owned company

    Responsibilities (4)
    • Capturing, reviewing and specifying procurement (P2P) use cases and change requests
    • Decision papers and facilitation of alignment meetings with business and staff teams
    • Design of automated buyer determination in SAP S/4HANA
    • Steering and acceptance of technical implementation; tracking of release requirements
    • SAP S/4HANA
    • SAP MM

  2. AI Initiative Procurement: Automating Info Record Maintenance and RFQs

    Port and logistics group · 06/2026 – 11/2026

    Design of AI-supported processes for info record maintenance and requests for quotation (RFQ)

    Responsibilities (4)
    • Analysis of materials, info records and conditions in SAP as a decision basis
    • Assessment of master data quality and derivation of clean-up measures
    • Identification and specification of AI use cases from supplier selection to bid comparison
    • Integration concept for SAP S/4HANA and Copilot Studio incl. implementation plan
    • SAP S/4HANA
    • SAP MM
    • Microsoft Copilot Studio

2025

  1. Project Lead SAP MM Procurement & Materials Management (Carve-In)

    Port and logistics group · 06/2025 – 07/2026

    Project lead for operationalising materials management when integrating a business unit

    Responsibilities (4)
    • Project organisation, meeting preparation and facilitation
    • Review of SAP implementations and validation of process mapping
    • Creation and active tracking of the cutover plan
    • Go-live support and hypercare management to ensure operational stability
    • SAP R/3
    • SAP MM

2024

  1. P2P Functional Consultant, SAP S/4HANA Migration Programme

    Telecommunications provider · 02/2024 – 06/2025

    Consultant in the P2P squad of an SAP S/4HANA migration programme

    Responsibilities (5)
    • Requirements analysis and process design with other streams, the Spanish integrator and business units
    • Testing and quality assurance of process implementations
    • Functional business tests (FBT) and user acceptance tests (UAT)
    • Validation of P2P migration objects in test runs and during cutover
    • Cutover and hypercare activities
    • SAP S/4HANA
    • SAP R/3
    • SAP SRM
    • GEP SMART (Sourcing)

2021

  1. Group-wide Rollout of the E-Procurement System WPS4

    Intralogistics group · 09/2021 – 12/2023

    Responsibilities (4)
    • Rollout planning and execution
    • Requirements analysis with internal customers
    • Process design and implementation in WPS4
    • Expert and coordinator between internal stakeholders and the solution provider
    • SAP S/4HANA
    • SAP R/3
    • WPS4

  2. Functional Consultant, P2P S/4HANA Migration Programme

    Automotive manufacturer · 04/2021 – 12/2023

    Responsibilities (5)
    • Requirements analysis and process design with P2P sub-streams, IT and business units
    • Testing and quality assurance of process implementation
    • Cross-P2P definition of approval workflows (purchase requisition and PO)
    • Coordination and delivery of business user training
    • Cutover and hypercare activities
    • SAP S/4HANA
    • SAP R/3
    • SAP Central Procurement Hub
    • SAP Fieldglass
    • WPS4

  3. IT Consultant wescale Procure, Change Request Package

    Pharma and lab supplier · 01/2021 – 09/2021

    Responsibilities (3)
    • Requirements analysis and process design
    • Specification and quality assurance of implementations
    • Interface between client and development
    • SAP S/4HANA
    • SAP MM
    • wescale

2020

  1. IT Consultant SAP SRM Integration with wescale Procure

    Technology group · 12/2020 – 09/2021

    Responsibilities (3)
    • Process workshops
    • Alignment and implementation of the SAP SRM integration with wescale Procure
    • Interface between the vendor’s development team and the client’s IT
    • SAP S/4HANA
    • SAP SRM
    • wescale Procure

  2. IT Consultant, Digitalisation of Services Procurement

    Automotive manufacturer · 10/2020 – 09/2021

    Responsibilities (3)
    • Process design together with the client
    • Consulting on services procurement
    • Lead implementation of the client solution
    • SAP R/3
    • SAP MM-SRV
    • SAP SRM
    • wescale Procure

  3. IT Consultant, Global Procurement Transformation Programme

    Automotive manufacturer · 01/2020 – 08/2020

    Responsibilities (3)
    • Process design with the internal project team and cross-functional streams
    • Project and client-specific documentation
    • Assessment of IT landscapes, master data and interfaces with various e-procurement vendors
    • SAP S/4HANA
    • SAP Ariba
    • wescale
    • Jira
    • Confluence

2019

  1. IT Consultant WPS4 Implementation and Group-wide Rollout

    Intralogistics group · 08/2019 – 08/2020

    Implementation and group-wide rollout of a new e-procurement system

    Responsibilities (4)
    • Requirements analysis with internal customers
    • Requirements specification and process flow diagrams
    • Support of the design and implementation phase
    • Rollout concept for sales and manufacturing companies
    • SAP S/4HANA
    • WPS4
    • MS Visio
    • MS Planner

  2. SAP IT Consultant Services Procurement

    Automotive manufacturer · 08/2019 – 11/2019

    Enhancement of contingent workforce procurement in SAP R/3

    Responsibilities (3)
    • Technical specification based on client requirements
    • Responsible for SAP development by a Romanian service provider
    • Quality assurance, client acceptance and handover
    • SAP R/3
    • Jira
    • Confluence

2017

  1. IT Consultant Implementation of wescale Procure (WPS4)

    Automotive manufacturer · 11/2017 – 04/2019

    Replacement of the existing e-procurement solution with wescale Procure

    Responsibilities (4)
    • Mapping and optimisation of existing processes in the new cloud application (innovation project)
    • New approval process
    • Creation of purchase requisitions and purchase orders in SAP
    • Marketplace integration
    • WPS4 / wescale
    • SAP MM
    • SOAP & REST web services
    • SAML2
    • Microsoft Azure
    • HP ALM

2016

  1. IT Consultant WPS4 Implementation

    Consumer goods manufacturer · 11/2016 – 05/2017

    Replacement of the existing e-procurement solution with WPS4

    Responsibilities (2)
    • Redesign of procurement processes: material group, G/L account and buyer determination, approval process, stock replenishment, automatic goods receipt
    • PO creation and transmission, marketplace integration
    • WPS4
    • SAP MM
    • RFC
    • SAML2

  2. IT Consultant WPS4 Implementation

    Bank · 02/2016 – 06/2016

    Replacement of the existing e-procurement solution with WPS4

    Responsibilities (5)
    • Redesign of procurement processes: material group, G/L account and buyer determination, approval process
    • Catalogue-based services
    • PO creation and transmission
    • Contract management (Spider Contract, Brainware Solutions AG)
    • SAP-integrated invoice processing (xFlow Invoice, WMD Group GmbH)
    • WPS4
    • xFlow Invoice
    • SAML2

2015

  1. IT Consultant Migration from WPS classic to WPS easyprocure

    Health insurer · 08/2015 – 01/2016

    Responsibilities (3)
    • Redesign of procurement processes: material group, G/L account, buyer and tax code determination, approval process, automatic goods receipt
    • Withdrawal of stock items (flyers, brochures, …)
    • PO creation and transmission via SAP, marketplace integration
    • WPS4
    • LDAP

Experience

  1. Freelance SAP S/4HANA Procurement Consultant (P2P)

    Self-employed · 09/2020 – presentOngoing

    Indirect procurement consulting for corporate groups and public-sector clients – from process design to go-live

    • Designing lean procure-to-pay processes in SAP S/4HANA and SAP MM
    • Integrating e-procurement solutions (IVALUA, WPS4 / wescale, SAP Ariba) into SAP landscapes
    • Project and sub-project lead incl. test, cutover and hypercare in agile and traditional setups
    • Designing AI-supported procurement processes, e.g. RFQ and master data maintenance

  2. Senior Consultant

    MHP Management- und IT-Beratung GmbH · 07/2019 – 08/2020

    Indirect procurement and e-procurement transformation for corporate clients

    • Process and requirements analysis, functional concepts and specifications
    • Ownership of sub-project phases from design to rollout
    • Workshops, presentations and training sessions

  3. IT Consultant

    WPS Management GmbH · 05/2015 – 04/2019

    Consultant at the solution provider: WPS4 / wescale implementations for clients in automotive, consumer goods, banking and healthcare

    • Redesign of procurement processes incl. SAP and marketplace integration
    • Client workshops, training and sub-project responsibility

Skills

Methods & Competencies

  • Project management
  • Cutover
  • Process design
  • Testing (FBT, UAT)
  • Data migration
  • Change management
  • Stakeholder management
  • Agile & waterfall

SAP

Materials Management / P2P
  • SAP S/4HANA
  • SAP MM
  • SAP MM-SRV
  • SAP SRM
  • SAP Central Procurement Hub
  • SAP Fieldglass
  • SAP Fiori

E-Procurement

  • IVALUA
  • WPS4 / wescale
  • SAP Ariba
  • GEP SMART

AI & Cloud

  • Claude
  • Microsoft Copilot Studio
  • Microsoft Azure
  • Google Cloud Platform

Integration

  • SOAP & REST web services
  • SAML2 (SSO)
  • RFC
  • LDAP

Languages

  • German
    Native
  • English
    Business fluent

Certifications

Education

  • Master of Science
    TH Köln – University of Applied Sciences · 06/2020
    Part-time degree alongside employment
  • Bachelor of Science
    OWL University of Applied Sciences and Arts · 08/2014
    Applied Computer Science, specialising in Business Information Systems

Contact

Planning an SAP S/4HANA procurement project, a migration or an e-procurement rollout? Drop me a short note on what you need and when. I usually reply within one business day.

Send an email info@s-hoppe.comCall +49 171 1826831