Backend developer building production-ready APIs for industrial and financial domains.
B.Sc. Mechatronics · Based in Baden-Württemberg, Germany · Open to junior backend roles.

Backend: Java 17, Spring Boot 3, REST APIs, JWT, Role-based access
Database: PostgreSQL, JPA/Hibernate, Flyway, Transactions
Testing: JUnit 5, Mockito, Testcontainers
DevOps: Docker, Docker Compose, GitHub Actions (CI/CD)
Domain: Industrial device systems, IoT backend, Fintech APIs

REST API for managing industrial device configurations — validation, versioning, approval workflow.

• Per-device-type JSON schema validation with custom ConstraintValidator
• Immutable config versioning with full change history
• Approval workflow before config activation
• JWT authentication with role-based access (admin / operator)
• AI-assisted anomaly detection (planned)

Tech: Spring Boot 3, PostgreSQL, Docker, JWT, JPA/Hibernate

Backend system simulating financial transactions with strong consistency guarantees.

• Atomic transfers with rollback on failure
• Pessimistic & optimistic locking strategies
• JWT authentication & authorization
• Audit logging for all transactions
• Integration tests with PostgreSQL via Testcontainers
• Dockerized with CI/CD pipeline

Tech: Spring Boot, PostgreSQL, Flyway, JWT, Docker

• Clean, maintainable API design
• Industrial domain knowledge applied to backend architecture (Mechatronics background)
• Secure coding and reliable database handling
• Building real understanding — not copy-paste development

• 🇩🇪 German B2 — Goethe-Institut (in preparation)
• 📚 Distributed systems — reading Designing Data-Intensive Applications
• 🔧 Completing industrial-device-config-api with validation and versioning layers

Turkish (Native) · English (B2) · German (B1 → B2 in progress)