SAP Consultant

SAP S/4HANA Transformation – Authorization Concept & GRC (SAST)

Supporting the design and implementation of the user and authorization concept for the SAP modules FI, AM, CO, BP, PS, MM, SD, and third-party products with transactions & apps (Fiori)

• Supporting the evaluation of workstations
• Setting up the SAST role template, including Fiori
• Aligning the content of business roles with process owners
• Implementation
• Test and go-live support

Greenfield – S/4HANA (since January 2026 Post Merger)

Functional responsibility at the interface between Finance, Controlling and Real Estate Management in an S/4HANA transformation in the context of an announced merger

Key areas:

• Introduction of Lease Accounting according to IFRS 16 as the initial focus
• Design of integrated processes in leasing, real estate and Finance integration
• Cost Allocation and cost accounting in Controlling
• Expansion of the role to serve as the functional link between Finance, Controlling and RE-FX in the merger context

• Conduct in-depth data and business analysis to generate actionable insights.
• Review and validate datasets for accuracy, consistency, completeness, and quality.
• Apply structured analytical reasoning to evaluate business and data-related problems.
• Translate analytical findings into clear insights and recommendations.

Independent practice serving clients in SAC-P and AI-enabled FP&A transformation, including financial model development for PE firm engagements, data cleansing with PowerQuery, workflow automation Claude Cowork, SAC-P scoping task-based assignments (Micro1.ai & Mercor.ai), and SAP partner network development.

• 2026 – Completed significant upgrade training for Positioning Business AI and SAP Cloud ALM Workshop (In-Person). Live Demos • SAC-P & Excel-Based Reports • Claude Partner • SAP Partner#: 1961209 (OE – Build)
• Fall 2026 – New effort to re-train/update past FI/CO, SAP BPC, SAP Platform to S/4 Finance & Core G/L Accounting
• 2026 – Upskilling for Transformation Toolchain. In-Person Workshops: Cloud ALM & SAP BTP • Joule Demo(s)
• 2025 – FP&A processes • Datasphere & Business Data Cloud • Team Workshops for AI • Toolchain & SAP Cloud ALM
• 2024 – Built key credentials on Deloitte S4 Experience • Group Reporting and SAC-P

Engaged by one of Switzerland’s largest insurance groups for spanish SAP rollout following the acquisition of Caser (Spain), for ongoing support and S/4HANA transformation initiatives covering all Market Units (CH, ES, DE, AT, FR, IT).

Key areas: FI-AP, FI-AR, Payments, Bank Accounting, Cash Management, S/4HANA transformation, eInvoicing, eReporting, Business Partner

• SAP Rollout: Led end-to-end FI-AP, FI-AR, Payments, and Bank Reconciliation rollout for acquired Caser entities in Spain (Dec 2020 – Mar 2022), including full Spanish localisation.
• Integration with FSCD: Redesigned bank statement incoming payments integration in FSCD from custom to SAP standard solution, significantly increasing straight-through processing rates.
• Payments: Retired legacy custom payment trees; implemented SAP standard CGI payment trees and executed migration from ISO 20022 v2009 to v2019.
• Implemented a 1 GL account per House Bank (HBKID) concept with multiple Bank Account IDs (HKTID), reducing the total number of bank GL accounts by over 90%.
• Spanish localization: Configured and deployed Mod 180, 190, 347, 349 and SII Reporting for Spain mainland and Canary Islands using SAP eDocument (DRC) and SAP BTP Webservice, processing 2 million invoices annually, Spanish Direct & Indirect Method Cash Flow Statements (Insurance & Non-Insurance) fully reconciled
• Migration: Used SAP AIF to migrate AR/AP master data, open items, SEPA mandates, and complete GL documents for multiple company code merges (hundreds of thousands of records); leveraged Power BI/Power Query for data transformation.
• Bank Reconciliation: Achieved 60%+ automatic bank reconciliation across MU ES, CH, and DE using CSB43, MT940, and CAMT.053/054 formats, including custom improvements (tax-number-based customer/vendor matching, fuzzy search), and co-implemented the bank statement interface cockpit in SAP AIF. Integrated MX Camt from Swift Finplus and made transition from ISO20022 v2009 to v2019
• Worked on S/4HANA convergence and wrote concept work for SAP Cash Management & Treasury and eInvoicing/eReporting transformation.
• Currently leading the design for Business Partner Migration using SAP DRF and SAP AIF for Helvetia Baloise Integration Project and Harmonization of all BP interfaces.
• Currently leading Requirements Engineering for eInvoicing & eReporting for Italy, France and Spain, modelling Flows in SAP Signavio.

• Central SAP S/4HANA FI/CO contact for business departments and group controlling (DE, AU, USA)
• Traced a ~30 % margin variance (a million-euro amount, 8 months) back to 3 drivers (CO-PA, IC)
• S/4HANA Utilities (IS-U/FI-CA): Placed CO requirements before go-live as a Jira epic with 7 stories
• Month-end/year-end closing: GR/IR, value types, reclassifications; support for the audit
• Product cost controlling: clarified overheads, standard prices, and valuation differences down to the document level
• Replaced Excel/Tableau reports with SAP queries; built owner reporting for 3 companies

SAP Business Data Cloud / Datasphere rollout

Technologies: SAP Datasphere | SAP BTP | SAP Analytics Cloud | ETL / ELT | Security & Governance

Tasks / Responsibilities:

• Designing and implementing data architectures in SAP Business Data Cloud / Datasphere
• Designing spaces, data products, and data flows for integrated data models
• Connecting SAP and non-SAP systems via SDI, ODP, APIs
• Integration with SAP Analytics Cloud for self-service analytics
• Building governance, security, and authorization concepts
• Creating architecture guidelines & performance optimization

Results / Achievements:

• Introduced a central data catalog & authorization concept
• Laid the foundation for self-service analytics

• Developed Power BI semantic models, DAX and RLS, improving reporting performance and security.
• Designed Fabric Lakehouse with Medallion Architecture (Bronze/Silver/Gold), accelerating data processing and improving maintainability and scalability.
• Built Fabric Data Factory pipelines and PySpark transformations, reducing processing time by 40%.
• Delivered automated Power BI KPI dashboards, accelerating reporting and decision-making.
• Supported SAP BO 4.3 → 2025 migration across 2,000+ Webl reports and 34 universes, reducing testing effort by 35% and improving migration quality and reliability.
• Optimized UNX universes, reducing query execution time by 40%.
• Optimized SAP BO reporting solutions, improving reliability and reducing manual effort.

Environment: Power BI, Microsoft Fabric (Lakehouse, Warehouse, Pipelines, PySpark), Tabular Editor, DAX Studio, SAP BI (BO 4.3/2025, Webl, UNX Universes), 360Suite, InfoBurst, GitHub, JIRA.

• Introduction of a new payment term including its description, as well as a new shipping condition
• Configuration of item category determination (Item Category Determination)
• Implementation of the minimum price calculation (Floor Price) in the pricing procedure
• Setup of the intercompany third-party transaction (direct delivery) and addition of the direct delivery indicator to the invoice
• Prevention of delivery splits (Delivery Split) in sales orders
• Masking of the expiration date and net weight fields
• Transfer of the sales group from the quotation to the sales order
• Analysis and resolution of a pop-up appearing when creating sales orders
• Analysis and resolution of order confirmations that were created and sent with €0.00 per item

• Gathering requirements and conceptually designing reporting and planning requirements in controlling (CO) and modeling SAP Analytics Cloud data models for group reporting.
• Designing and implementing reports and dashboards to support planning, forecasting and control processes.

• Designed and implemented WordPress websites using the Divi theme, translating client visions into engaging, user-friendly digital experiences.
• Managed front-end and functional design, ensuring seamless navigation and optimized performance.

Following the Vaillant engagement, established independent practice focused on senior SAP advisory and building ASTRA — a methodology, not a tool. ASTRA is independent and unbiased: the same four pillars serve CIO / Business Leadership, SI / SAP Practice, and Programme Director / Principal with equal weight. No audience is primary.

ASTRA serves three audiences with equal weight — CIO / Business Leadership · SI / SAP Practice · Programme Director / Principal. ASTRA is independent and unbiased — it does not sit inside any SI practice and does not serve any single audience as primary customer. Each audience receives a role-calibrated output from the same analysis.

One methodology, two outcomes:

OUTCOME 1 — SAP TRANSFORMATION GOVERNANCE:

Any active SAP programme: ECC→S/4HANA Greenfield, Brownfield, Global Rollout, AMS. The four pillars answer the four questions that determine whether a transformation succeeds — for any of the three audiences.

• Are business requirements clean — or is the SI building what SAP standard already covers? (Functional Auditor → all three audiences)
• Is the custom object inventory healthy — or accumulating debt that blocks upgrades? (RICEFW Auditor → Director and CIO)
• Is the SteerCo reporting accurate — or is leadership seeing a Watermelon? (Truth Engine → CIO and Director)
• Are people ready for the system they are receiving? (Human Signal → CIO and Director)

OUTCOME 2 — AUTONOMOUS ENTERPRISE READINESS:

Any programme deploying Joule, pursuing RISE, or planning an AE migration. The same four pillars answer the questions SAP does not — again, calibrated per audience.

• Which custom objects block the 224 Joule AI agents? (RICEFW Auditor → SI gets remediation paths, Director gets verdicts, CIO gets financial impact)
• Is the Fiori deployment complete enough to activate Joule? (Truth Engine → all three audiences)
• Is the workforce trained for AI-native working? (Human Signal → CIO and Director)

Four pillars (each serves all three audiences):

• Functional Auditor: Clean Core Score 0–100. Section A (CIO): KG fidelity risk in €. Section B (Director): SI challenge questions, man-day saving. Section C (SI): Language Translation Ledger, SAP alternatives.
• RICEFW Auditor: Joule API Pathway Audit, Clean Core Level A–D, Technical Debt Index 1–10. Section A: financial impact of blocked AI agents. Section B: RETIRE/MIGRATE/REDESIGN/KEEP verdicts. Section C: BTP remediation paths.
• Truth Engine: Watermelon Detection, Fiori Deployment check, Programme Truth Score 0–100. Section A: 3 SteerCo questions. Section B: 48-hour action list. Section C: vendor friction map.
• Human Signal: three-stage Fiori adoption model, HITL Policy readiness, Human Signal Score 0–100. Section A: GUI training weight, AE adoption financial risk. Section B: go-live recommendation, stakeholder resistance map.

On-Demand SAP Advisory:

• SAP Programme Management — end-to-end governance, factory management, multi-stream delivery, vendor oversight, SteerCo reporting for Greenfield, Brownfield, Rollout and AMS programmes.
• Delivery Management — RICEFW oversight, Data Migration governance, Release & Cutover management, Hypercare, SLA/KPI management.
• Due Diligence & Landscape Assessment — SAP landscape review, AS-IS/TO-BE roadmap, RFP structuring, SI selection advisory.
• IT Strategy & CIO Advisory — transformation roadmap, Clean Core strategy, Autonomous Enterprise readiness planning.
• Programme Recovery — distressed programme assessment, rapid governance setup, escalation resolution.

Operating through senior professional networks across EMEA.

• Supported the internal IT department with SAP support for S/4Hana.
• Processed tickets.
• Further developed solutions.
• Enhanced configuration models.
• Trained key users and end users.
• Documented solutions.

• Management of security and governance initiatives
• Development of SAP BTP as an innovation platform
• Trusted advisor to executive management