Freelancer profile translated to English.
Back to original languageAbout Ralph
I am a system developer (database, application, and interface developer) with a business administration background and an affinity for business processes and data architecture. My focus is on understanding the business processes and requirements and implementing reliable, robust, and business-appropriate solutions based on a clear and clean design of data and processes.
I have more than 20 years of professional/project experience in
data modeling, data analysis and data migration, database development (Oracle, PL/SQL), development of interfaces, applications, and ETL pipelines (Java, JavaEE).
German
Native or bilingual
English
Fluent
French
Basic
Can work on-site
Trier (up to 50km), Frankfurt am Main (up to 20km), Stuttgart (up to 20km), Wiesbaden (up to 20km), Mainz (up to 20km), Mannheim (up to km), Darmstadt (up to km), Luxemburg (up to 50km), Saarbrücken (up to km), Bonn (up to km), Köln (up to km), Hannover (up to 10km), Düsseldorf (up to 10km), Neuss (up to 10km)
Experience
- Büro für Mobilitätsberatung und ModerationJavaFX Application for Determining and Analyzing CommutesTRANSPORTATIONApril 2023 - Today (3 years and 4 months)- Data modeling and implementation Oracle- JavaFX application development- API implementations, e.g., Google Routes API- Analysis of routes and comparison of different modes of transport (public transport, car, walking, cycling, pedelec, speed pedelec)- Creation of charts- Various exports to Excel, CSV, etc.
- Capgemini / StBaProject Census (GWZ, EHU)PUBLIC SECTORSeptember 2021 - December 2022 (1 year and 4 months)Oracle Performance Tuning, Refactoring, Database Development, Consulting• Analysis of database queries and execution plans regarding performance and their optimization• Implementation of suitable indexes• Analysis of AWR reports• Writing scripts for migration, error analysis, error correction, model adjustment, partitioning, deployment etc. (Languages SQL and PL-SQL for SQLPlus and Flyway)• Development of time-critical functionalities in PL/SQL (Procs, Fcts, Packages)• Consulting developers regarding SQL queries, views, PL/SQL objects, etc.• Deployment and support for development and load testing databases
- Wertgarantie AGIT Consultant / Software DeveloperBANKING AND INSURANCEFebruary 2020 - March 2020 (2 months)Hannover, GermanyConcept and realization of deletion processes within the scope of GDPR (canceled due to Corona)• Data analysis, identification of data and data structures to be deleted• Development of deletion workflow• Creation of deletion procedures (Oracle Packages)
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Education
- Diplom-Informatiker (FH) (equivalent to a Master of Science in Computer Science)University of Applied Sciences Trier2015Studium der Informatik
- Specialist Assistant in Tax and Business Consulting Professions (Tax Assistant)Tax Consultancy Brunner, Koblenz1989Ausbildung zum Steuerfachgehilfen
Certifications
- Oracle APEX Cloud Certified Developer ProfessionalOracle
- Oracle Autonomous Database Cloud 2025 Certified ProfessionalOracle