October 2016 — September 2017: Senior Engineer & DevOp at toom Baumarkt GmbH
Freelance | Bonn
Role & Contributions:
- Lead Developer with cross-team quality leadership responsibilities in a Scrum team focused on microservices development.
- Developed production microservices using Java and Golang, implementing business logic and inter-microservice communication.
- Led weekly cross-team quality initiatives, introducing integration tests and optimizing performance.
- Containerized microservices with Docker and established CI/CD pipelines with Bamboo.
Business Impact:
- Delivered 5 production microservices, replacing monolithic components.
- Reduced deployment time from days to hours through DevOps transformation.
- Improved software quality by establishing comprehensive testing and metrics frameworks.
- Achieved significant performance gains, including a 70% improvement in test execution speed.
Professional Recognition:
Received formal technical and organizational recommendations from tarent solutions GmbH leadership:
“Mr. Schulte further advanced the technological environment of the project with his outstanding expertise. Thanks to his very quick comprehension, he easily familiarized himself with the dimensions of domain, technology, and process and brought added value to the project at an early stage.”
— Sebastian Mancke, tarent solutions GmbH (September 2017)
Key Technical Achievements:
- Enabled decoupled development of Java microservices, removing external dependencies
- Accelerated end-to-end test execution by ~70% through optimization
- Reduced Java microservice memory consumption via Garbage Collection tuning
- Introduced comprehensive tools: Swagger, HtmlUnit, OWASP, Apache JMeter, Pact
- Implemented metrics integration in pull request workflows
Key Technologies: Java, Golang, Docker, Kubernetes, Kafka, REST, OAuth2, Bamboo, Selenium, Pact, Swagger, Apache JMeter.