“My Account” Customer Portal

Support in further developing and maintaining the customer portal. Fullstack development including backend and frontend, plus deployment (DevOps).

Design, development, and monitoring of microservices, migrating features from a monolithic system into various microservices. Planning and implementation of new microservices (backend and frontend). Setting up and maintaining a CI/CD pipeline (GitHub Actions) and configuring cloud infrastructure with AWS CDK and Terraform. Designing and implementing event-driven communication with AWS SNS/SQS and Apache Kafka. Ensuring code quality through Test Driven Development (TDD), static code analysis, and clean code.

• Programming languages: Java (Java 8 – 21), Kotlin, TypeScript (Svelte, Vue)
• Frameworks, technologies: Microservices, AWS Cloud (CDK), Spring, Micronaut, Webservices (REST), Docker, Apache Kafka, docToolchain
• Methodologies: Test Driven Development (TDD), Continuous Integration (CI), Continuous Delivery (CD), DevOps, Clean Code, Scrum, Kanban
• Logging, monitoring: SLF4J, Logstash
• Standards: OpenAPI, JSON, AsciiDoc, Markdown, HTML, CSS
• Databases: JPA, Hibernate, MongoDB, DynamoDB
• Testing: JUnit 5, TestNG, Mockito, mockk, Pact, PITest, Stryker, Postman, Insomnia
• Build, deployment: GitHub, Jenkins, Terraform, AWS
• Project environment: Git, IntelliJ, Gradle, Jira, Confluence, Linux, Mac

Support in further developing the customer portal. Maintaining and expanding the existing service architecture.

Further development of the customer portal with a focus on designing and building self-contained services. Maintaining and extending the existing service architecture. Working as a team member in the Scrum team to integrate self-services and ensure software quality using Behavior Driven Development (BDD) and Test Driven Development (TDD). Creating APIs for use by another team in app development. Configuring the deployment process with AWS CloudFormation. Monitoring services with ELK Stack, Grafana, and Prometheus.

• Programming languages: Java (Java EE, Java 8), Groovy
• Frameworks, technologies: Self-contained services, Spring (Framework, MVC, Data, Security, Integration), Webservices (SOAP, REST), Apache Tomcat, docToolchain
• Methodologies: Behavior Driven Development (BDD), Test Driven Development (TDD), Continuous Integration (CI), Scrum
• Logging, monitoring: ELK Stack, Grafana, Prometheus
• Standards: JSON, XML, XSD, AsciiDoc, UML, HTML, CSS, JavaScript
• Testing: JUnit 4/5, Mockito, PITest, Cucumber, SoapUI, Postman
• Build, deployment: Jenkins, Rundeck, AWS, SonarQube
• Project environment: Git, Eclipse, Spring Tool Suite, Gradle, Jira, Confluence, Bamboo, Bitbucket, Puppet, Linux, Windows

Configuration and extension of the CMS (Sophora) according to customer requirements.

Customizing and extending the Sophora (Subshell) content management system to meet customer needs. Expanding a media database (with a graphical web interface) to manage audio, video, and images. Creating documentation (concepts, technical documentation, user manuals, operations manuals).

• Programming languages: Java (Java EE, Java 7/8, JSF 2.0, JSP), JavaScript (jQuery, AJAX)
• Frameworks, technologies: Spring (Framework), Webservices (REST, SOAP), JAXB, Apache CXF, Apache Solr, Apache Webserver, Apache Tomcat, Java Server Faces (Primefaces), Quartz, Sophora
• Methodologies: Domain Driven Design (DDD), Behavior Driven Development (BDD), Test Driven Development (TDD), Continuous Integration (CI), Scrum
• Logging: log4j, logstack
• Standards: JSON, UML, SQL, XML, XSD, XSL, HTML, CSS
• Databases: Hibernate, MySQL, Oracle
• CMS: Sophora
• Testing: JUnit, HTMLUnit, JSFUnit, Thucydides, Mockito, Powermock
• Build, deployment: Jenkins, Sonar
• Project environment: SVN, Eclipse, Spring Tool Suite, Maven, OpenProject, Visual Paradigm, Linux, Puppet, Apache Ant