Matthias (Dr.) Oehme
Freelance Consultant
Experience
Freelance Consultant
Etengo (for Syna AG)
Consulting in the SAP EAM module as part of the migration to EON's S/4HANA oneERP system
Reviewing and Estimating Costs of Customer-Specific Developments (e.g., Cockpit for EAM Orders, Document Flow Display)
Preparing EAM Classification Data for Technical Objects (Technical Locations, Equipment) for Migration into New Classes
Freelance Consultant
SThree (for Aareon GmbH)
Delivery of SAP ABAP Software to Various Aareon Customers in the Real Estate Sector
Customization of Heating Cost Settlements According to the HKVO Heating Cost Ordinance
Supporting Clients on S/4HANA and Earlier Release Versions
Freelance Consultant
Hays (for Natuvion GmbH at Sachsenenergie)
Organizing Complex Data Transformations and Migrations from Two SAP ECC Systems into an S/4HANA System
Using the PM, MM and FI Modules
Participant in SAP topic seminars
Open.sap.com
SAP PLM in the Process Industry (with Exams)
Espresso Tutorials: Authorization (Fiori Apps, Transactions); Fiori Apps Error Handling; CDS Views; SAP EAM PM; SAP Build (Apps)
Participant in SAP topic seminars
Open.sap.com
Adapting UI in S/4 HANA Cloud Using Screen Personas (with Exams)
Blockchain Technology - Introduction and Use in Business and Other Areas (with Exams)
Insights into Selected Logistics Innovations in SAP S4HANA (with Exams)
New Employee Business Partner Model SAP S4HANA (with Exams)
Freelance Work
CSE Consulting GmbH
Consulting in SAP MM Purchasing: Fiori apps for purchase requisitions
Interface concept: transfer of material data from an external system and assignment of EAN numbers
Freelance Work
iPAXX AG (for Aareon Deutschland GmbH)
SAP ERP BK01 area for Aareal Bank's payment management
Data exchange and processing of payment requests between SAP ERP systems, AEPP and customer apps (CRM) via the Swagger data portal (OpenAPI) based on HTTP protocols
Participant in SAP topic seminar
Open.sap.com
- Developing and Extending SAP Fiori Elements Apps (with exams)
Participant in SAP topic seminar
Open.sap.com
- Key Functional Topics in a System Conversion to SAP S4HANA (with exams)
Freelance Work
ECBM AG (for ONYX POWER)
Data migration in the SAP areas PM, MM into a MAXIMO IT system and into an SAP Business ByDesign system
Use of agile project strategies and interface connections between both systems
Participant in SAP Topic Seminars
Open.sap.com
SAP S/4 HANA Migration Cockpit (with exams)
SAP Fiori Overview Design, Develop and Deploy (with exams)
Building Apps with the ABAP RESTful Application Programming Model (with exams)
SAP Learning Hub Trainings: HA400 ABAP S4/HANA; D75AW ABAP DELTA to 751; S4D430 CDS Views; S4D440 Customer Code Adaptation to ABAP S4/HANA; SAP Fiori UX100 Fiori Foundation
Freelance Work
HAYS AG (for Syna GmbH)
Creating OData services in PM (ABAP OO 7.50)
Developing CDS views and JSON formats for the MIA app frontend
Agile project strategies: bidirectional data exchange between the frontend and SAP backend
SAP Training Participant
HAYS AG
- GW100 SAP Gateway – Creating OData Services
SAP Training Participant
HAYS AG
- HA400 ABAP Programming for SAP HANA
Freelance Work
HAYS AG (for Vattenfall Europe Information Services GmbH)
Migration of PM data, MM material master data, QM notifications, PP bill of materials, PP routings, and technical locations as part of a carve-out
Using ABAP OO, BAPIs, RFC function modules, and LSMWs
Complex ABAP OO programming for a service provider portal with data upload from Excel
SAP Training Participant
HAYS AG
- HA150 SAP SQLScript
Freelance work
ETENGO GmbH (for ista International GmbH)
Complex ABAP OO customer-specific programming in the PM module in the context of real estate and energy sector (ABAP 7.30)
Use of the Eclipse Workbench for ABAP development
Agile work strategies: Scrum, Test Driven Development
Freelance work
People4Project GmbH (for COMLINE AG, TLG AG)
Interface programming in the RE-FX module (ABAP 7.50, SAP HANA)
Migration of customer data from external systems to the SAP system: RE-FX, MM orders, including additional fields
FI developments in FI-AA (additions, depreciations) and operating costs
Processing files to generate the consolidated balance sheet
Freelance work
HAYS AG (for Vonovia AG)
Complex ABAP OO programming in the PM module (ABAP 7.50)
Development of a cockpit for maintenance orders with SALV display
Functions: conversion to internal/external orders, mass scheduling, release with generation of MM purchase requisitions and purchase orders
SAP Training Participant
- SAP HANA Introduction
Freelance work
Ratbacher GmbH (for Springer Media)
ABAP OO programming and customer-specific developments in the FI module (ABAP 7.31)
Implementation of interfaces
Testing Driven Development
Freelance work
PROMOS Consult GmbH (for Vonovia AG)
ABAP programming and support in the PM and MM modules
Development of complex customer-specific solutions
Freelance work
Mercoline AG
ABAP programming in the MM module
Interface programming
Creating and changing master and transaction data in MM, SD, PP with BAPIs and SALV classes
Error display via ALV
Freelance work
RSP AG (for 50Hertz AG)
ABAP programming in the PM module (ECC 6.0)
Complex programming with user exits, enhancements, BADIs
Automated creation of MM purchase requisitions and purchase orders from PM orders
Freelance work
Mercoline AG (for Bundesdruckerei and others)
ABAP programming in the QM module (ECC 6.0)
Development of QM notification activities: creating credit memo requests and CO internal orders via dynpros
ABAP programming in MM, SD, FI
Freelance Work
SAG
ABAP programming in the CO module (ECC 6.0)
Extension of a monitor for planned and actual costs of WBS elements using Easy Cost Planning (ECP)
Editable ALV display for planned cost amounts by cost element and period
Freelance Work
Volkswagen AG
ABAP programming in MM and WM (ECC 6.0)
Development of a new inventory monitor with customer-specific adjustments to standard transactions
Freelance Work
Deutsche Bahn AG
ABAP programming in the PM module (ECC 6.0)
Rescheduling of maintenance plans via batch input
Development of interfaces to the frontend and application server
Freelance Work
Deutsche Bahn AG
ABAP/ABAP OO programming in PM, SD, CS (ECC 6.0)
Adaptation of status flows in CS notifications via user exits and functional enhancements (FuBas)
Interface development for generating and sending CS orders
SALV grids for technical objects with user-exit-based editability
Freelance Work
SIEMENS AG
ABAP/ABAP OO programming in QM and PS (ECC 6.0)
SCM QM oneP project: data selection and display of complex equipment via ALV, generation of SmartForms PDFs
QM notification programming with SALV tree controls for causes and actions
Enhancement/user-exit programming to control inspection lot creation for goods receipt
PS oneP project: data display for network plans and standard plans with SALV classes and validation logic
Freelance Work
BAYER AG
ABAP OO programming in WM, MM, SD (ECC 6.0)
Enhancement/User Exit for optimized material putaway including customizing
Classes, methods and enhancements for quantity conversion in stock transfer orders
Adjustment of transaction VA01 for characteristic value proposals in variant configuration
Freelance Work
ARVATO Systems
Contribution to and programming of an SD add-on for forwarding orders (ECC 6.0)
Menu improvements and distance calculation via customizing
Adjustments for freight cost document processing (transaction VI02) via user exits for Vattenfall
Freelance Work
FIDUCIA AG
ABAP OO, EDI/ALE, BAPI and batch input programming in MM, SD, FI (ECC 6.0)
Enhancement of IDoc structures, BAPI and batch input integration
ALV report programming for depreciation and accruals
SAPscript form development and adjustment of order creation (project agreeNet)
Freelance Work
Ferrero GmbH
ABAP OO programming in the QM module (ERP 2005, ECC 6.0)
Processing of analysis certificates as PDFs into SAP documents using BAPIs
Modification of table controls for horizontal scrolling and new displays for inspection result evaluations
Development of a transaction for sample registration with ALV controls and double-click functionality
Collective inspection orders with Excel OLE export/import and BAPI integration
XI proxy programming for data exchange with external labs
Mass processing and ALV lists for inspection lot results
Freelance Work
WincorNixdorf AG / TMI AG
Dialog programming in the retail sector (ERP 2005, ECC 6.0)
Data model in the Data Dictionary (tables, maintenance views, validations)
Complex dialog programs for goods issue and replenishment planning using ABAP OO and dynamic ALV grids
Freelance Consultant
FIDUCIA AG
Release upgrade from 46C to ERP 2005 (ECC 6.0)
Conversion from batch inputs to BAPIs in SD, SCM, PLM, FI with monitoring
Performance optimizations and use of SAP Enjoy Controls
Improvement of file interfaces and Unicode adjustments
Freelance Consultant
Groupe DANONE
ABAP programming in PP, MM, SD, WM (ECC 6.0)
Reporting and reconciliation of inventory data via ALV controls
Performance optimizations through table indexes
Dialog programming with SAP Enjoy Controls and customer exits
Mass update of PP orders via batch input
Freelance Consultant
Siemens France SA
Programming in the PS project system: data retrieval and ALV grid/tree display for projects and subprojects
Programming in CS customer service: interface for notification tasks via batch input and file archiving
Freelance Consultant
Fresenius Netcare GmbH
ALE (IDOCs) and interface programming in an SAP scenario between clinical facilities and payers
Inbound IDOC processing and outbound message control with ABAP OO and application log
Freelance Consultant
Element System GmbH
Inventory controlling reporting with ALV grid controls
Metrics provision via LIS, data conversion in ABAP memory
Event handling and hotspot mechanism in ALV
Freelance Collaboration
SAP System Integrations AG (for Forschungszentrum Jülich)
Interface programming in MM for migration from R/2 to R/3 4.7 via BAPIs
Reporting in CO, MM, FI with SAP Enjoy Controls and object-oriented methods
Transporting data to local PC directories
Training Participant
Cimdata GmbH
JavaScript: dynamic websites, forms, pop-ups
HTML: website design, tables, CSS, hyperlinks
SAP Certification Participant
Siemens Business Services GmbH & Co. OHG
ABAP Objects Developer: Specialist Software Development ABAP Objects
Topics: Data Dictionary, reporting, dialog programming, BAPIs, SAP Enjoy Controls, customer exits, BADIs, basic UML knowledge
Training Participant
Cimdata GmbH
Java: servlets, network programming, threads, JDBC, Swing
C++: basics, object-oriented programming
SAP Consultant/Developer
Hewlett Packard
ABAP developments for interfaces to external servers using UNIX scripts
Selection and loading of material master data for web-based inventory overviews
SAP Consultant/Developer
Raiffeisen-Banken Schweiz
- Reporting in the MM and SD modules
SAP Consultant/Developer
Swisscom
Concept and sub-project management for material master data selection
Uploading data with LSMW
SAP Consultant/Developer
Hewlett Packard
Release upgrade from 40B to 46C
Support for SD, MM, PP: IDOC processing, monitoring, troubleshooting
SAP Consultant/Developer
CLARIANT
Programming and maintenance of custom MM programs (goods receipt)
Reporting in MM (reservations, inventory management)
Development of customer exits, field exits and batch inputs
IDOC processing in SD and release upgrade support from 30F to 46B
SAP Consultant Training
Siemens Business Services GmbH & Co. OHG
- Certified as SAP R/3 consultant for MM module and completed logistics training
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Information Technology (9 years), Real Estate (2 years), Banking and Finance (2 years), Chemical (2 years), Utilities (1.5 years), and Energy (1.5 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (19.5 years), Supply Chain Management (7.5 years), Procurement (4 years), Finance (2 years), Product Development (1.5 years), and Operations (1 year).
Skills
Overview Of Sap Experience:
- Abap Oo (Sap Certification)
- Abap 7.5x
- Odata Services
- Json Formats
- S/4hana
- Abap Cds Views
- Sap Controls (Alv Ida, Salv, Alv)
- Sap Fiori Apps
- Sap Odata Services
- Sap S/4hana Migration Cockpit
- Bapis
- Interface Programming
- Data Migrations (E.g., Preparation And Loading Of Material Masters)
- Forms (Sapscript, Smartforms, Sap Adobe Forms)
- Modifications And Sap Enhancements (Badis, User Exits, Etc.)
- Ale And Edi (Programming, Idoc Processing And Monitoring)
- Modules Scm, Ps, Mm, Sd, Plm, Cs, Fi, Co, Qm, Pm And Sap Eam
- Knowledge In Pp
- Sap Security And Authorization (Fiori Apps, Transactions)
- Customizing And Sap Support
- Sap Jobs (Scheduling And Monitoring)
- Multiple Release Upgrades
Programming Languages:
- Abap Oo
- Abap 7.5x
Operating Systems:
- Windows 11
Databases:
- S/4hana
Languages
Education
Technical University of Applied Sciences Berlin
Diploma in Industrial Engineering · Industrial Engineering · Berlin, Germany
Max Planck Institute Stuttgart
Doctorate · Stuttgart, Germany
High School
High School Diploma · Germany
Certifications & licenses
ABAP Objects Developer
Siemens Business Services GmbH & Co. OHG
SAP R/3 Consultant for the MM Module
Siemens Business Services GmbH & Co. OHG
Profile
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