Java Software Engineer (Backend)

Location: Sofia, Bulgaria, with flexible working hours and the possibility to work from home.

Company

hirify.global is a Switzerland-founded global transformation partner delivering technology strategy, business innovation, digital solutions, applications, and device and systems engineering across regulated industries including healthcare and finance.

What you will do

• Develop and maintain backend microservices using Java 21 and Spring Boot 4.
• Design and implement REST APIs documented with OpenAPI and integrate internal and external services.
• Build messaging and integration flows with Apache Camel and Kafka.
• Work with PostgreSQL, Spring Data JPA/JDBC, Flyway, and the Flowable BPMN workflow engine.
• Secure, test, containerize, and deploy services using Spring Security, OAuth2, Keycloak, Docker, Kubernetes, Helm, and GitLab CI/CD.
• Participate in code reviews, contribute to engineering best practices, and monitor and troubleshoot production services with Prometheus and Grafana.

Requirements

• Strong experience with Java 17+ and Spring Boot.
• Solid knowledge of the Spring ecosystem, including Spring Web MVC, Spring Data JPA, Spring Security, and Validation.
• Experience designing and consuming REST APIs.
• Good knowledge of SQL and relational databases, ideally PostgreSQL.
• Experience with automated unit and integration testing, including JUnit 5 and Mockito.
• Basic understanding of Kubernetes, Docker, and cloud-native environments.
• Familiarity with Gradle and Git-based workflows, including merge requests and code reviews.
• Good understanding of object-oriented design, clean code, and microservice architecture.

Nice to have

• Experience with BPMN workflow engines such as Flowable or Camunda.
• Experience with Apache Camel or other enterprise integration frameworks, and with Kafka or other event-driven architectures.
• Knowledge of OAuth2, OpenID Connect, and Keycloak.
• Experience with S3-compatible object storage such as MinIO.
• Experience with Helm, GitLab CI/CD, and Azure AKS.
• Familiarity with Prometheus, Grafana, SonarQube, MapStruct, ArchUnit, or Testcontainers.
• Working knowledge of German.

Culture & Benefits

• Safe and healthy workplace with flexible working hours and the possibility to work from home.
• Annual salary with a potential profit-share scheme based on the company’s previous-year success.
• Global and diverse community across 16 offices, with annual team camps, year-end parties, and local festivities.
• Investment in professional development and support for building skills for clients and long-term growth.