T-Systems Gmbh
Java Developer
at "eHealth Platform" for Telekom bietet Versicherten
Key
Achievements:
- Developed RESTful services based on HL7 FHIR standard, enabling interoperability between healthcare systems and standardized medical data exchange.
- Implemented processing of healthcare domain resources, ensuring data integrity and consistency.
- Designed and implemented logging and error handling, improving observability in a highly regulated healthcare environment.
Microservices
Java 21
Spring Framework
Spring Boot
PostgreSQL
Docker
FHIR
Git
Postman
Swagger
OpenAPI
Apache Kafka
Maven
T-Systems Gmbh
Java Developer
at "PIXEL" for Volkswagen AG
Key
Achievements:
- Reduced redundant queries by 5–7% by implementing ElasticSearch-to-CSV data export, improving data reuse.
- Designed and delivered 2 microservices from scratch for next-generation vehicle support and large-scale analytics.
- Contributed to architectural decisions and enforced code quality through code reviews.
- Led 50+ sessions to transfer knowledge and responsibility from another company.
Microservices
Java 25
Spring Framework
Spring Boot
PostgreSQL
Docker
AWS
Git
Postman
Swagger
OpenAPI
TypeScript
Angular
ElasticSearch
OpenAPI
T-Systems Gmbh
Java Developer & Jira Administrator
at "Support TOOLS" for Open Telekom Cloud
Key
Achievements:
- Managed and maintained Jira for 100+ clients, incl. setup and infrastructure design for 4 new tenants from scratch.
- Administrated Jira for more than 100 B2B clients. Built from scratch and maintained infrastructure for 4 new B2B clients.
- Identified and resolved 50+ bugs in Jira plugins, improving system stability
- Introduced Clean Code practices, improving maintainability and reducing merge request review time by ~30%
- Onboarded 3 new colleagues to the team.
Java 11
Spring Framework
Atlassian SDK
Groovy
Git
JUnit5
Mockito
REST API
JSON
Swagger
T-Systems Gmbh
Java Developer
at "CA-Analytics" for Deutsche Telekom
Key
Achievements:
- Delivered 4 new features and maintained 15+ functionalities within a dedicated epic.
- Improved internal test tooling performance by 10x.
- Increased test coverage from 40% to 92% (covered 300+ classes by tests).
Microservices
Java 17
Spring Framework
Spring Boot
PostgreSQL
Prometheus
Grafana
Git
JUnit5
Mockito
REST API
JSON
Postman
GitLab CI
JavaScript
React.js
