Robert Skarwecki

Senior Java Backend Engineer – Microservices | Kafka | Kubernetes | Cloud

I support businesses in the modernization and development of complex backend systems – with a focus on Java, Spring Boot, Kafka, and Kubernetes.

With more than 15 years of experience in security-critical and highly available systems (banking, healthcare, security industry), I bring both deep technical expertise and a strong understanding of clean code, integration, and DevOps.

Whether it's new development, migration, or technical troubleshooting: I deliver maintainable solutions, clean architecture, and seamless operations – on-premise or cloud-based.

Remote or on-site – I am available at short notice.

My Services

• Migration of monolithic systems to microservices
• Backend development with Spring Boot & Kafka
• Building robust CI/CD pipelines and DevOps structures
• Integration of legacy systems (SAP, HSM, databases)
• Development in regulated environments (banking, medtech, security)

Core Competencies

• Development of modern Java backends using Spring Boot
• Event-driven architecture with Apache Kafka
• Microservices with hexagonal architecture
• CI/CD with GitHub Actions, Jenkins, ArgoCD
• Containerization: Docker, Kubernetes, Helm
• REST APIs with OpenAPI / Swagger
• DevOps & Cloud: Azure, AWS, Blob Storage
• Interfacing with complex systems: SAP, HSM, Legacy

Tools & Frameworks

• IntelliJ IDEA, Maven, Gradle, JUnit, Mockito
• Camunda BPMN/DMN, Cucumber, Pact
• Monitoring with Grafana, Graylog, Splunk
• Git, GitLab, BitBucket
• Databases: Oracle, PostgreSQL, MySQL

Work Experience

2023–2025 | Nord/LB | Java Backend & Microservices

• Digitalization of complex banking processes (Camunda, SAP)
• Development & operation of microservices with Spring Boot, Kafka, Kubernetes
• Integration of third-party systems via OpenAPI & DevOps (Azure, ArgoCD)

2021–2023 | Visa | Payment Security & HSM

• Development of security-critical payment backends
• Hexagonal architecture & integration of HSM systems (Thales payShield)

2018–2021 | Carl Zeiss Meditec | MedTech

• Diagnostic plugins & backend for medical image data
• Combination of Java and .NET | performance optimization & native libraries | installer

2014–2018 | Veridos | Border Control Systems

• Development & integration of biometric hardware in .NET environment
• Focus on database layers and hardware communication

2007–2014 | Giesecke & Devrient | Card Management

• Backend system for electronic health cards (J2EE, SAP, Cayenne)
• 3rd-level support, on-site consulting, performance optimization

Languages

• German – C2
• English – C1