Summary
Overview
Work History
Education
Skills
Certification
Running
Timeline
Hi, I’m

Carsten Leidner

SAP Basis Manager
Puerto Vallarta
Carsten Leidner

Summary

Experienced in a wide array of SAP Basis administration tasks, excelling in performance monitoring, tuning, problem analysis, resolution, and other critical activities essential for maintaining system integrity and maximizing uptime. Expertise spans system installation, client copy procedures, release changes, implementation of SAP Support packages, Enhancement Packages, and creation and support of interfaces like SAP Business Connector, SAP Cloud Connector, and SAP Cloud Platform Integration. Deep understanding of SAP authorizations led to spearheading development and successful implementation of a new SAP authorization concept, overseeing rollout and providing post-implementation support. Contributed skills as a SAP basis consultant in diverse projects including introduction/preparation of SAP S/4 HANA migration, SAP archiving, and SAP DART.

Overview

20
years of professional experience
1998
years of post-secondary education
13
Certifications
3
Languages

Work History

08.2022 - 06.2025

Job overview

  • Support for my wife's digital business Supported the growth and daily operations of an international digital business, focusing on marketing, client acquisition, and technical assistance during its expansion in Mexico.

MEWA Textil-Service AG & Co Management OHG

SAP Basis Manager
08.2019 - 07.2022

Job overview

  • Recommended and built custom indexes within SAP database solutions.
  • Main contact for SAP Basis and interfaces in the SAP area such as SAP CloudConnector, SAP Business Connector 4.8, SAP C4C Cloud for Customer, SAP CPI (Cloud Platform Integration)
  • SAP authorization system including role creation and adjustment
  • Risk management in the area of SAP authorizations, audit
    preparations and participation in the audits
  • SAP Job Management SAP internally and in the scheduling tool (autosys)
  • SAP Marketplace authorization management
  • SAP transportation and process management
  • SAP archiving
  • Optimization of SAP data usage
  • Analysis of SAP incidents together with internal and external IT service providers
  • Processing of SAP end user tickets in the ticket system (OTRS)
  • Coordination of external IT service providers
  • Project collaboration from requirement to go-live for IT operations
  • Project work in IT projects
  • Support for various projects as a specialist for SAP
  • Project management
  • Project management for the introduction of SoD & segregation of duties tools in SAP
  • Change coordination in the areas of SAP
  • Processing of BUGs
  • Recommended and built custom indexes within SAP database solutions.
  • Collaborated with cross-functional teams to successfully complete complex SAP projects on time and within budget.
  • Streamlined SAP user administration, enabling efficient management of user profiles, role assignments, and authorizations.
  • Managed critical incidents and resolved complex issues swiftly to minimize disruption to business operations.
  • Enhanced system performance by implementing effective SAP Basis administration strategies and monitoring tools.
  • Maintained a secure environment for sensitive information through diligent monitoring of access logs and timely resolution of any unauthorized activity alerts.
  • Participated in disaster recovery planning and testing, ensuring a robust contingency plan was always in place for critical SAP systems.
  • Established proactive monitoring mechanisms that aided in early detection of bottlenecks thereby mitigating the impact on business operations.
  • Documented and maintained technical specifications for SAP applications.
  • Resolved issues and escalated problems with knowledgeable support and quality service.
  • Installed kernel upgrades per technical documentation guidelines, adhering to SAP's best practices.
  • Applied necessary support packs to SAP and Oracle products, maintaining up-to-date and secure software installations.

Savencia Fromage & Dairy Deutschland GmbH

SAP Basis Administrator
07.2016 - 07.2019

Job overview

  • Integrated third-party software into SAP-based solutions and installations, verifying compatibility and interoperability.
  • Collaborated with cross-functional teams to successfully complete complex SAP projects on time and within budget.
  • Ensured seamless integration between various SAP modules by providing expert technical support during implementation phases.
  • Responsibility for the SAP basic administration
  • Analysis of error messages and implementation of corrective measures if necessary
  • Preparation, planning and import of SAP HR LCPs (Legal Change Package)
  • SAP authorizations including role creation and adjustment
  • Implementation and rollout of the SAP authorization concept and its administration including role creation and adjustment
  • Implementation of various interfaces, such as the connection of the French APO, BW and ERP systems to the German ERP system
  • Setting up the SAP EKAER interface (electronic control system for the movement of goods on public roads)
  • Setup of the SAP NAV online interface (Invoice framework solution)
  • SAP user management
  • Incidentmanagement
  • SAP GUI Management
  • Support and maintenance of the SAP Business Connector 4.8
  • Coordination of external IT service providers (BLUE STEC + SVA)
  • Planning, organization and implementation of technical projects in the SAP Basis environment such as planning and controlling QA refreshes, building sandbox systems, SPS update SAP BW and SAP ERP, upgrade Solution Manager 7.2
  • Development and connection of the DEV HR portal
  • Audit preparations and participation in the audits
  • Supervision of the SAP Solution Manager
  • Reduced downtime and optimized system availability through proactive maintenance, upgrades, and patches.
  • Enhanced system performance by implementing effective SAP Basis administration strategies and monitoring tools.

Werner & Mertz GmbH

SAP Basis Administrator
04.2015 - 06.2016

Job overview

  • Implemented NetWeaver and J2EE platform.
  • SAP basis administration to ensure the availability of the SAP
    system landscape
  • Monitoring to ensure trouble-free and smooth operation of the SAP systems
  • Import of SAP corrections and support packages
  • Planning and implementation of release/upgrade projects for the SAP systems
  • Installation of new SAP systems as well as system copies and
    system refreshes
  • User and authorization maintenance in the SAP systems
  • Oracle and SAP MaxDB database administration of the SAP
    systems
  • Error analysis and performance optimization in the SAP
    environment
  • Administration of the SAP jobs with the scheduling software UC4
  • Support of the specialist department in all questions of SAP basis functionality
  • Supervision of the SAP Solution Manager

Styrolution Group GmbH

SAP Basis Administrator
09.2014 - 03.2015

Job overview

  • Responsibility for the SAP basic administration as well as the
    externally hosted Unix OS and Oracle databases
  • Ensuring functioning SAP environments and interfaces
  • Development and updating of SAP hardware maintenance, life cycle and contingency planning
  • Recommendation and implementation of improvement measures
  • Creation of interfaces with SAP Net Weaver PI Middleware and related systems in a Linux and Windows environment
  • Analysis of error messages and implementation of corrective
    measures if necessary
  • Assisting the support team in resolving conflicts and issues,
    increasing efficiency and increasing security
  • Responsibility for the development and budgeting of measures for software and device maintenance and for the conclusion of contracts with external service providers
  • Preparation of reports, business plans and documentation

Infraserv GmbH & Co. Höchst KG

SAP Basis Administrator
10.2005 - 08.2014

Job overview

  • Supervision of the SAP system landscape of Infraserv Höchst (5 SAP basis administrators, approx. 30 SAP systems, approx. 1100 SAP users) and their subsidiaries
  • User support through independent processing of incoming service requests and reported incidents, taking into account the defined service agreements
  • Oracle and SAP MaxDB database administration of the SAP
    systems
  • Planning and implementation of release/upgrade projects for the SAP systems
  • Installation of new SAP systems as well as system copies and
    system refreshess
  • Detailed and comprehensible documentation of all work in the ticket system
  • Creation and maintenance of the existing operating manuals
  • Creation of Standard Operating Procedures (SOPs)
  • Support in the preparation, implementation and follow-up of
    projects as well as the assumption of sub-project management
  • Transfer of projects into operation (participation in the test and hypercare phase, acceptance of new operating manuals)
  • Consideration / compliance with the basic processes of change and problem management
  • As a local problem manager, responsible for the problem tickets in the area of SAP Basis, putting together task forces, and regularly monitoring and reporting the problem tickets
  • Independent system administration such as parameter
    maintenance, installation of support packages / patches
  • Independent monitoring of the SAP system landscapes as well as troubleshooting, analysis and elimination
  • Independent review of the system functions and rectification of any errors that occur, if necessary with the help of external (manufacturer) support
  • Constant system and performance optimization (quality
    assurance)
  • Independent promotion of standardization and avoidance of
    overhead and manual activities (automation)
  • Control and steering of external consultants and assignment
    of work packages and control of their processing

Education

State Technical School Weilburg
Weilburg

Associate Degree from Computer Systems and Network Technology
01-1998

Skills

SAP system administration

Certification

CP100 SAP Cloud Platform

Running

Successfully completed a half-marathon on April 6, 2025, following weeks of structured preparation. This training demonstrates my ability for long-term goal setting and perseverance.

Timeline

08.2022 - 06.2025

CP100 SAP Cloud Platform

05-2020

HR940 Authorizations in HCM

04-2020

SAP Basis Manager

MEWA Textil-Service AG & Co Management OHG
08.2019 - 07.2022

SAP Basis Administrator

Savencia Fromage & Dairy Deutschland GmbH
07.2016 - 07.2019

SAP Basis Administrator

Werner & Mertz GmbH
04.2015 - 06.2016

SAP Basis Administrator

Styrolution Group GmbH
09.2014 - 03.2015

EP200 SAP Netweaver Portal - System Administration

12-2013

PDEF46 SAP JVM

07-2011

WDEJ71 Delta Administration AS Java 7.0 7.1

06-2010

ADM515 Database Administration SAP MaxDB

06-2009

PRINCE2 Foundation Examination

09-2008

ADM200 Administration AS Java

04-2008

ADM506 Database Administration Oracle II

05-2007

SMO100 SAP Solution Manager: Operations System

03-2007

ADM505 Database Administration Oracle I

07-2006

SAP Basis Administrator

Infraserv GmbH & Co. Höchst KG
10.2005 - 08.2014

LDAP/Samba Server

11-2004

Linux Administration

07-2004

State Technical School Weilburg

Associate Degree from Computer Systems and Network Technology
01.1998

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Carsten LeidnerSAP Basis Manager