Stefan Helders
Selbstständig, Retired - but reactivation as Data Engineer possible on good opportunities, I am retired
Jakarta, Indonesien
Werdegang
Berufserfahrung von Stefan Helders
Bis heute 6 Monate, seit Jan. 2024
Retired - but reactivation as Data Engineer possible on good opportunities
I am retired
Retired, but open to good opportunities as Data Engineer or Data Scientist, preferably in Dubai, Abu Dhabi or Doha
11 Jahre und 5 Monate, Jan. 2009 - Mai 2020
Software Architect for Backend Solutions
Bayer Business Service
Software Architect for backend solutions; technical knowledge: data warehousing, data integration, ETL (IBM Datastage, Informatica Powercenter/Developer, Talend), relational databases (Oracle, SQL, PL/SQL, SAP HANA, MySQL), graph databases (Neo4J, cypher), data modeling (Powerdesigner); business knowledge: controlling, global material master data, global creditor/debitor master data, business intelligence
5 Jahre und 9 Monate, Apr. 2003 - Dez. 2008
SAP ABAP Developer
Bayer Business Services
Development in global master data process and support small business logistics processes; technical knowledge: SAP R/3, ABAP, SQL, ALE, Idocs; business knowledge: R/3 sales & distribution, production, material management, R/3 master data: material cluster, classification system
3 Jahre und 11 Monate, Juni 1999 - Apr. 2003
SAP Development and Support
Bayer Business Services
Development and Support of production planning, build up prototype for Bayer Chemicals (which is LanXess now); technical knowledge: SAP R/3, ABAP, SQL; business knowledge: sales & operation planning, production planning and adjacent logistics processes like sales & distribution, production, material management
6 Jahre und 4 Monate, März 1993 - Juni 1999
Software Developer and Support
Bayer Business Services
Development and Support of sales & operation planning; technical knowledge: IBM Host Mainfrain systems, TSO, ISPF, COBOL, PL/1, IMS, DB2, SQL; business knowledge: sales & operation planning, production planning
Ausbildung von Stefan Helders
2 Jahre und 7 Monate, Sep. 1990 - März 1993
Mathematics, Computer Science
Chamber of Industry and Commerce (Industrie und Handelskammer, IHK), Köln
Sprachen
Deutsch
Muttersprache
Englisch
Fließend
Französisch
Grundlagen
Spanisch
Grundlagen
Bahasa Indonesia
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