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# Java Full Stack Developer

- **Company:** Qualysoft
- **Location:** Wien, Austria
- **Salary:** €98,800.0 - €104,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Unit Testing, Business Process Model and Notation, Databases, DevOps, Junit, PostgreSQL, Apache Maven, Scrum Methodology, Systems Integration, Spring-boot, Backend, Api Design, Restful APIs, Microservices
- **Published:** July 14, 2026
- **Apply:** https://www.adzuna.at/details/5360016741

## About the Role

Proven professional experience in backend development with Java (Java 21 preferred)Strong knowledge of Spring and Spring Boot 3Solid understanding of BPMN (Camunda BPM is a strong advantage)Experience with REST API development and integrationProficiency in JUnit for unit testingExperience in Maven build managementSolid knowledge of PostgreSQL (JSONB is a plus)Strong background in microservice architecture design and implementationAgile mindset and experience working in Scrum/Kanban teamsExcellent command of English (spoken & written)Interested?

## Description

We are seeking an experienced Java Full Stack Developer with a strong focus on backend development to join our agile team. You will be responsible for building and maintaining enterprise-grade services and automating business processes using BPMN (ideally with Camunda BPM). Your role will involve designing and developing APIs, implementing microservice-based architectures, and integrating with databases, all while collaborating closely with cross-functional teams in an agile environment. Experience in the telecommunications sector is highly desirable and will be considered a strong plus.€380 - €400 a dayKey Responsibilities
Design, develop, and maintain backend services using Java 21, Spring, and Spring Boot 3Implement and integrate REST APIs for internal and external systemsApply BPMN knowledge (Camunda BPM preferred) for long-running processesConduct unit testing using JUnit to ensure code qualityManage builds and dependencies with MavenWork with PostgreSQL, ideally with JSONBDesign and develop scalable, maintainable microservice architecturesCollaborate closely with product owners, architects, developers, and DevOps teamsContribute to the continuous improvement of development processes and toolsEnsure solutions meet performance, stability, and security standards


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