Jaroslav Abraham

Senior Software Engineer

Jaroslav Abraham
Kittsee, Österreich

Erfahrungen

Feb. 2022 - Aug. 2023
1 Jahr 7 Monaten
Stuttgart, Deutschland
Remote

Senior Fullstack Entwickler

nexMart GmbH

• 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

Jan. 2020 - Dez. 2021
2 Jahren
Bern, Schweiz
Hybrid

Senior Software Engineer

Schweizerische Mobiliar Versicherungsgesellschaft AG

• 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

März 2011 - Sept. 2020
9 Jahren 7 Monaten
Wien, Österreich
Hybrid

Lead Java Developer, IT Consultant

AGES GmbH

• 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

Apr. 2006 - Jan. 2011
4 Jahren 10 Monaten
München, Deutschland
Vor Ort

Java Entwickler

Moconso Technologies GmbH

• 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

Jan. 1999 - März 2006
6 Jahren 3 Monaten
Prag, Tschechische Republik
Vor Ort

Software Entwickler

Et Netera s.r.o.

• 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)

Zusammenfassung

With over two decades of experience in software engineering, I specialize in designing and implementing robust, high-quality solutions for complex systems. My expertise spans Java, Kotlin, Spring Boot, and Java EE, with a strong focus on microservices, REST APIs, and event-driven architectures. I excel in building scalable systems using modern tools like Docker, Kubernetes, and CI/CD pipelines, ensuring seamless integration and deployment. I have a proven track record in e-commerce, insurance, and pharmaceutical industries, delivering solutions with technologies like PostgreSQL, Oracle, ElasticSearch, and Kafka. My work includes API design, test automation (TDD, BDD, Pact), and cloud-native principles. I’m also skilled in frontend development with Vue.js and Angular. Passionate about learning, I quickly adapt to new technologies such as AI, blockchain, and serverless computing. My commitment to quality, structured problem-solving, and cross-team collaboration ensures impactful results in every project.

Sprachen

Tschechisch
Muttersprache
Deutsch
Verhandlungssicher
Englisch
Verhandlungssicher

Ausbildung

Okt. 1997 - Juni 2003

Czech technical university (CVUT)

Engineer · IT/Software Engineering · Prag, Tschechische Republik

Okt. 1990 - Juni 1997

7-year secondary school

Třebíč, Tschechische Republik

Zertifikate & Bescheinigungen

Java 8 Programming TeckChek (score 98/100)

TEKsystems Inc.

ISAQB Certified Professional for Software Architectures

Future Network Cert GmbH

Zertifikat Deutsch

Goethe Institut, München

Sun Certified Java Programmer