Freelancer profile translated to English.
Back to original languageAbout René
Software is my passion. My focus is on dealing with legacy software, for example maintenance, replacement, documentation, or integration with other systems.
Through my work in various roles, as a Senior Developer, Consultant, or Architect, I have built a broad foundation in software development. I always work visibly and customer-centrically. For me, working with software (whether development, analysis, or modernization) is a craft; the choice of programming language or platform is secondary.
I specialize in the modernization or further development of existing software systems. This can involve replacements (typically: COBOL to Java) as well as porting to new platforms/cloud or the implementation of new business logic.
German
Native or bilingual
English
Fluent
Can work on-site
Hamburg (up to 50km)
Experience
- René Neumann IT-ConsultingFreelance Developer, Architect & ConsultantApril 2025 - Today (1 year and 2 months)Hamburg, GermanyFocus on dealing with legacy software, for example maintenance, replacement, documentation, or integration with other systems
- IBM Deutschland GmbH (Consulting)Advisory IT Architect BankingSOFTWARE PUBLISHINGApril 2022 - March 2025 (2 years and 11 months)Hamburg, GermanyArchitecture leadership and development in a COBOL-to-Java transformationMigration of the German savings banks' backend system from COBOL to Java (target platform: Mainframe and Linux)
- Technical leadership for developers (development of guidelines, technical training, intermediary between developers and customer IT)
- Process planning and technical analysis with customer project management and business departments
- Development of technical concepts for overcoming migration obstacles
- Investigation of various approaches to increase migration efficiency
- Development of OSPlus services and batches
- Diagnosis and resolution of errors in Java and COBOL application areas
Work as SME in the development of Watsonx Code Assistant for Z (AI assistant for Mainframe Modernization and COBOL-Java migrations) - Körber IT Solutions GmbHSenior Integration ConsultantMECHANICAL ENGINEERINGJanuary 2021 - March 2022 (1 year and 2 months)Hamburg, Germany
- Technical responsibility for integration projects
- Work focus on Salesforce and SAP
- Planning and execution of an implementation project for an integration platform (SAP CPI, Dell Boomi), including software selection and negotiation of budget approval
- Technical specification of system integrations based on business requirements
- Implementation, maintenance, and operation of several interfaces, including between ERPs (including various SAP systems) and Salesforce
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Education
- Dr. rer. nat.Technical University of Munich2017Schwerpunkt: Theorembeweisen ("CAVA - A Verified Model Checker")
- Master of ScienceTU Munich2011Schwerpunkt: Theoretische Informatik & Logik
Certifications
- IBM Recognized Speaker/PresenterIBM2024
- IBM Mainframe Application Programmer - Java on z/OS - ExperiencedIBM2022