10/08/2026 updated
not available
info: not available until 12/01/2026
Senior Java & Quarkus Consultant / Solution Architect
Velicna, Slovakia
Only remote
Ing. - Information Systems, University of Zilina, Faculty of Management Science and InformaticsAbout me
Senior Java & Quarkus Consultant / Solution Architect with 10+ years of experience in enterprise backend development, microservices and integrations. Skilled in Spring Boot, Kafka, Apache Camel, Keycloak, IBM BAMOE, PostgreSQL and OpenShift. Available for 100% remote EU contracts.
KeycloakJava (Programming Language)HibernatePostgreSQLSolution ArchitectureSystems IntegrationSpring BootBackendSpring DataApache KafkaRestful ApiApi ManagementDockerMicroservices
Java & Quarkus Backend Development
Over 10 years of commercial experience delivering enterprise backend solutions using Java, Spring Boot, Quarkus, REST APIs, Spring Data, JPA/Hibernate, schedulers and WebSocket.
Solution Architecture & BPM
Expertise in designing microservice architectures, BPM/BPMN platforms including IBM BAMOE, application design from scratch, technical analysis and integration interfaces across international environments.
Security & Integration
Strong background in Spring Security, Keycloak, OAuth 2.0, OIDC, JWT, Spring Authorization Server, Apache Kafka, Apache Camel and OpenAPI/Swagger for secure and robust integrations.
Cloud & DevOps
Hands-on experience with Azure Functions, Key Vault, Application Insights, Azure Monitor, API Management, Azure DevOps Pipelines, OpenShift and GitLab CI/CD.
Databases
Proficiency in PostgreSQL, MSSQL, MySQL, DB2 and Cosmos DB, including schema design, indexing, optimization and partitioning.
Observability & Containers
Practical knowledge of OpenTelemetry, Grafana Tempo, Prometheus, Grafana, Docker and Kubernetes for monitoring and containerized deployments.
Frontend Development
Experience building Angular frontends as part of full-stack web application development.
Technical Mentoring & Code Review
Proven track record in technical mentoring, code reviews, architecture decisions and conducting technical meetings in international teams.
Over 10 years of commercial experience delivering enterprise backend solutions using Java, Spring Boot, Quarkus, REST APIs, Spring Data, JPA/Hibernate, schedulers and WebSocket.
Solution Architecture & BPM
Expertise in designing microservice architectures, BPM/BPMN platforms including IBM BAMOE, application design from scratch, technical analysis and integration interfaces across international environments.
Security & Integration
Strong background in Spring Security, Keycloak, OAuth 2.0, OIDC, JWT, Spring Authorization Server, Apache Kafka, Apache Camel and OpenAPI/Swagger for secure and robust integrations.
Cloud & DevOps
Hands-on experience with Azure Functions, Key Vault, Application Insights, Azure Monitor, API Management, Azure DevOps Pipelines, OpenShift and GitLab CI/CD.
Databases
Proficiency in PostgreSQL, MSSQL, MySQL, DB2 and Cosmos DB, including schema design, indexing, optimization and partitioning.
Observability & Containers
Practical knowledge of OpenTelemetry, Grafana Tempo, Prometheus, Grafana, Docker and Kubernetes for monitoring and containerized deployments.
Frontend Development
Experience building Angular frontends as part of full-stack web application development.
Technical Mentoring & Code Review
Proven track record in technical mentoring, code reviews, architecture decisions and conducting technical meetings in international teams.
Experience
Professional experience10+ years
Freelancer since2020
Languages
EnglishFluentSlovakNative speaker
Project history
Design and implementation of a shared BPM platform based on Java, Quarkus and IBM BAMOE for process-driven microservices. Contributed to solution architecture, database model design and shared technical components including authentication and authorization with Keycloak. REST integrations and inter-service communication using Apache Kafka. Also developed integration services and flows using Quarkus and Apache Camel with MSSQL persistence and deployment on OpenShift. Worked with GitLab CI/CD and implemented observability using OpenTelemetry, Grafana Tempo, Prometheus and Grafana.
Designed and evolved microservice solutions deployed in more than 10 countries; the team was responsible for three key services. Technical mentoring, code reviews, architecture decisions and technical meetings in an international team with day-to-day professional communication in English. Technical analysis, estimation and requirement refinement with the Product Owner; responsibility for delivery quality and releases; troubleshooting performance and database issues. Tech: Java, Quarkus, Microservices, Angular, REST, JUnit, Maven, GitLab, Jenkins, Docker, MSSQL, PostgreSQL.
Designed and developed web applications largely from scratch, including Spring Boot backends, REST APIs, database models, security and Angular frontends. Implemented Spring Data/JPA/Hibernate, Spring Security, Spring Authorization Server, schedulers, WebSocket and external service integrations. Developed Azure Functions for Smart Building solutions using Key Vault, Application Insights, Azure Monitor, alerting, Azure Storage, API Management, Cosmos DB and Azure DevOps Pipelines. Tech: Java, Spring Boot, Spring Security, Spring Data, JPA/Hibernate, Angular, Python, PostgreSQL, MSSQL, MySQL, Cosmos DB, Azure, REST, WebSocket, Jenkins, Git.
Certificates
Azure Fundamentals (AZ-900)
Microsoft2024