Senior Java Backend Developer

3/2022 – 1/2024

 Engaged in the entire Software Development Life Cycle (SDLC) tasks, encompassing design, coding, testing, and documentation phases.  Spearheaded the preparation of use cases and contributed to the design and development of object models and class diagrams, utilizing UML specifications.  Designed and implemented event-driven architectures using reactive programming principles, enabling efficient handling of asynchronous events.  Customized Restful Web Services through the implementation of Spring RESTful API, facilitating seamless data packet exchange in JSON format between the front-end and middle-tier controller.  Proficiently documented RESTful endpoints using Swagger API, ensuring dynamic and comprehensive documentation.  Developed the backend tier utilizing the Spring Boot framework, effectively managing dependencies.  Designed and implemented REST-based Microservices using Spring Cloud, Spring Boot, and Spring Data with JPA.  Applied Spring Core Annotations for Dependency Injection (Spring DI) for REST API development, while employing Spring Boot for Microservices.  Implemented JUnit and Mockito frameworks for rigorous unit testing, capturing runtime exceptions through Log4j.  Conducted in-depth analysis of project requirements, successfully identifying and resolving bugs and issues.  Operated within an Agile methodology, ensuring adaptability and responsiveness to project dynamics.

Java (allg.)

12/2019 – 3/2022

• Played a key role in the analysis, specification, design, implementation, and testing phases of the Software Development Life Cycle (SDLC), adhering to a Test-Driven Development (TDD) approach.
• Leveraged the new features of Java 11, including Annotations, Generics, Lambda Expressions, enhanced for loops, and Enums in development.
• Utilized Spring and Data JPA to implement Inversion of Control (IOC) and Aspect-Oriented Programming (AOP) for back-end tiers.
• Implemented Thread Safe blocks to ensure multithread access validity within the Spring Batch.
• Developed and injected Spring services, controllers, and DAOs, employing dependency injection and object wiring for business class objects.
• Designed, implemented, and tested services within a Microservice-oriented architecture, successfully implementing REST-based Microservices using Spring Cloud, Spring Boot, and Spring Data with JPA.
• Constructed Microservices applications using Spring Cloud, demonstrating proficiency in distributed system development.
• Contributed to the development of web forms and classes using JAVA, incorporating both N-Tier Architecture and Database Connectivity.
• Conducted a thorough analysis of project requirements to identify and rectify bugs and issues.
• Collaborated with client teams, actively participating in risk identification and suggesting improvements in client deliverables and work products.
• Engaged in unit testing, integration testing, and code review utilizing SonarQube and SonarLint tools.
• Operated within an Agile methodology, ensuring adaptability and responsiveness to project dynamics.
• Integrated Kafka with other Java frameworks, such as Spring Boot, to enhance application development and maintenance. Integrated Apache Kafka for efficient data ingestion, enhancing data processing capabilities.

Java-Frameworks, Java (allg.)