Freelancer profile translated to English.
Back to original languageAbout Dominik
Passionate Java Backend Engineer (M.Sc. TUM) with a focus on health telematics and digital health. Specialized in developing highly available software solutions for critical infrastructures in regulated environments (MDR, GDPR). Experienced in cloud-native architectures (AWS, Spring Boot 3) and implementing security-by-design principles for connected medical technology. The comprehensive expertise is based on the successful integration of IT and OT systems in various complex industries (MedTech, automation technology, logistics).
Polish
Native or bilingual
English
Fluent
German
Native or bilingual
Can work on-site
Hamburg (up to 50km), Berlin (up to 50km), Dresden (up to 50km), Frankfurt am Main (up to 50km), München (up to 50km)
Experience
- Trium Analysis Online GmbHJava Backend EngineerMEDICALMay 2025 - Today (1 year and 1 month)München, Germany● Modernization & Replatforming: Migration of a critical backend platform for connected CTG (cardiotocography) monitoring and clinical device integration to a modern tech stack (Java 21, AWS).● Security & Compliance: Implementation of security-by-design principles to comply with MDR requirements - essential for secure processing of real-time, near-patient vital data in hospital environments.● Architecture: Establishment of the Vertical Slice Architecture for decoupling business domains and increasing maintainability in direct communication between backend and medical devices.● DevOps & IaC: Building automated infrastructure and introducing integration tests with Testcontainers for quality assurance.● Tech Stack: Java 21, Spring Boot 3, PostgreSQL,HL7, FHIR,AWS, Docker.
- Ingenics Digital GmbH,Java Software DeveloperHEALTH AND WELLNESSDecember 2023 - April 2025 (1 year and 4 months)Munich, GermanyTelenotarzt Platform: Development of a highly available backend system for emergency medical services in a regulated environment (e.g., TNA-Bavaria).● Software Architecture: Further development of services within a hexagonal architecture under strict application of Domain-Driven Design (DDD).● Automation & Tools: Conception of an internal automation tool for optimizing DevOps processes and CI/CD pipelines.● Documentation & Reporting: Implementation of a solution for automated generation of legally compliant PDF deployment protocols.● Tech Stack: Java, Spring Boot, Vue.js, Docker, GitLab CI, SonarQube, DDD, Hexagonal Architecture.
- Trium Analysis Online GmbH,R&D DeveloperHEALTH AND WELLNESSDecember 2022 - October 2023 (10 months)Munich, GermanyConception of secure data exchange concepts in telemedical cardiotocography (CTG).● Cloud & IoT: Design of hybrid cloud architectures for scalable device management under GDPR requirements.● Mobile Engineering: Development of an IoT gateway for connecting BLE sensors, including implementation of SIG profiles.● Security: Conducting threat analyses and reverse engineering of medical hardware. 1/2● Tech Stack: Java, Kotlin, AWS, BLE, Medical IoT, FHIR, JUnit, WireMock, Penetration Testing Tools.
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Education
- M.Sc. Electrical Engineering and Information TechnologyTechnical University of Munich2023Schwerpunkte: Software Engineering, IoT-Security, KI/ML und Medical Engineering, Note: 1.6
- Exchange ProgramRavensburg-Weingarten University of Applied Sciences2019Fokus: Embedded Systems und mobile Robotik in der Logistik.