Senior Software Engineer , Freelancer and IT consultant

2/2024 – 8/2024

• Implement the Frontend feature using Angular.
• Implement Backend feature using JAVA/SPRING BOOT.
• Deploy feature to the cloud and in-house server.
• Enhance code by writing unit tests for backend features.
• Document in confluence page feature and solutions.

Angular, DevOps (allg.), Java (allg.), Oracle Database, React (JavaScript library), Software Design, Software engineering / -technik, Application Packaging, Spring Framework, Typescript

5/2022 – 2/2024

• Create AWS CDK projects using Java to define the serverless infrastructure for the project. This involves defining resources such as AWS Lambda functions, API Gateway, MySQL tables, and clusters.
• Implement the infrastructure as code principles to manage and version the AWS CDK code using tools like Git.
• Use S3 to manage billing and invoicing files and implement scheduler jobs for recurrent payment reminders.
• Implement features and components to migrate clients from third-party services to our system using Kotlin and Dagger (Dependency injection framework).

Postgresql, SQL, Continuous Integration, Java (allg.), Kotlin, Software engineering / -technik, Softwareentwicklung (allg.), Spring Framework, Typescript, Amazon Web Services (AWS), JavaScript, React (JavaScript library)

3/2021 – 3/2022

• Develop a responsive user interface using React.js and thyme-leaf for internal usage and external Elastic search.
• Develop backend services using Java or Kotlin to handle business logic and data processing.
• Implement RESTful APIs and secure them with Oauth3 for communication between the frontend tools and backend services (Deployed to AWS EC2 instances).
• Collaborate with UX designers to enhance the overall user experience of the internal tool website.

Postgresql, SQL, Hibernate (Java), Java (allg.), Software engineering / -technik, Softwareentwicklung (allg.), Spring Framework, Typescript, JavaScript, React (JavaScript library)