Frontend (React/TypeScript):

DevOps & Integration:

In a fast-paced, rapidly growing environment, I improved the quality, maintainability, and performance of a data-intensive web application. I systematically identified and resolved bugs using modern monitoring tools, thereby increasing the stability of the overall system. Using Java and Elasticsearch, I developed new features for full-text search and document management, and actively contributed to the architectural evolution toward a secure and highly available solution.

• Optimized the Java backend for high-load scenarios and improved code maintainability
• Integrated and managed Elasticsearch to enhance the performance of complex search queries
• Leveraged the ELK stack (Elasticsearch, Logstash, Kibana) for systematic error analysis and monitoring
• Integrated MinIO as S3-compatible object storage for the efficient management of large data volumes
• Ensured software security and maintained documentation
• Designed new REST interfaces and processed complex JSON structures
• Refactored legacy code to increase system stability

In my role as a Software Developer, I played a key role in the modernization of a core banking system. The focus was on replacing a legacy COBOL codebase with a modern Spring-based architecture. I remodeled business processes and implemented them technically using Camunda 7, taking responsibility for the integration of legacy and modern interface standards.

• Modernized business-critical legacy features, migrating from COBOL to Java 17 and Spring Boot
• Modeled and automated complex business processes using BPMN and Camunda 7
• Designed and implemented interfaces using XML and XSD to connect with legacy systems
• Deployed and configured applications on JBoss EAP (version 8)
• Implemented strict security requirements (Spring Security) in a banking environment
• Performed JDBC-based data migrations and optimized performance at the database level
• Conducted code reviews and authored technical documentation