• Collaboration in an agile Scrum team on the following tasks: • Contribution to the design and clarification of requirements and dependencies with other teams • Design and implementation of Spring Boot microservices for a B2B e-commerce wholesale solution in Kotlin, with communication via REST (JSON) and ActiveMQ • Optimized product search using ElasticSearch • Design of a public API, including Swagger / OpenAPI documentation for B2B orders • Joint integration of the API with nexMart customers • Creation of unit tests, component tests, and automated end-to-end (E2E) tests using Testcontainers • Introduction of consumer-driven contract tests with Pact • Use and extension of CI/CD pipelines in Jenkins and GitLab • Frontend development with Vue.js, Stylus, NPM, JavaScript, and TypeScript • Persistence in a PostgreSQL database using jOOQ, with migration handled by Flyway • Version control and code reviews in GitLab • Code analysis with SonarQube • Authentication using Keycloak, OpenID Connect, OAuth 2, and API keys • Additional tools: IntelliJ IDEA, Docker, Maven, Nexus, OpenShift Cluster, Graylog, Grafana, Jira, Confluence
• Collaboration in an agile Scrum team within the SAFe framework on the following tasks: • Planning of implementation iterations – Sprints and SAFe Program Increments (PI) • Design and implementation of microservices for insurance contract invoicing in Java and Kotlin, with communication via REST (JSON) and Kafka • Development and maintenance of services using Java EE and Spring Boot • Unit tests, service tests, and automated system tests following TDD and BDD principles • Consumer-driven contract testing of services with Pact • Use of domain-driven design with OOP • Persistence in an Oracle database using JPA/Hibernate, with migration handled by Flyway • Version control and code reviews in BitBucket/Git, with code analysis using SonarQube • Integration with SAP for billing • Deployment in a private cloud using Docker/Kubernetes • Automated infrastructure and cluster management with Rancher and Helm Charts • DevOps with CI/CD pipeline in TeamCity • Integrated monitoring and logging with Prometheus, Grafana, and Splunk • Enhancements to the Angular-based frontend • Additional tools: IntelliJ IDEA, Maven, Gradle, Nexus, WireMock, Mockito, Cucumber, JBoss, Confluence, Jira, Dynatrace, Slack
• Scrum development of a Java EE application landscape for the pharmaceutical industry, featuring BPMN workflows, Oracle 11g SOA, XML/SOAP web services, and JSF/ADF • Deployed on Oracle WebCenter Portal and WebLogic Server, SSO authentication • Tools: JDeveloper, Ant, Jenkins, Subversion, Jira, Confluence, Oracle DB • Additional technologies: EJB, JMS, XSLT, SQL, HTML, CSS, JavaScript • Integration with third-party systems for data exchange and postal delivery • Consulting the client on technical and architectural possibilities • Clarification and refinement of requirements • Implementation design and task specification for various system components • Coaching, mentoring, and training of other developers • Researching and presenting modern technological alternatives
• Architecture and development of Java EE middleware infrastructures for mobile applications in the fields of football live tickers, sports betting, and online games • System design and architecture using Microsoft Visio and MagicDraw UML • Development of an internal Java code generator based on UML diagrams • Implementation in Eclipse IDE using Java 6 and Java EE technologies on Tomcat and MySQL, also including Spring, Hibernate, HTML, CSS, and JavaScript • Manual setup of operational infrastructure in the AWS Cloud • Deployment on AWS EC2 instances, with database hosted on Amazon RDS
• Software development focusing on websites and e-business solutions, primarily using Java on Tomcat and MySQL, as well as Python, PHP, and C/C++ • Projects for Eurotel (mobile network operator, now O2), Euromedia Group (online bookstore), the City of Prague, Siemens, Scania (DMS systems), and Annonce (classified ads portal)
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