Cloud Catalyst GmbH, based in Vienna, Austria, is a forward-thinking company specializing in innovative and sustainable cloud infrastructure solutions. With deep expertise in complex on-premises and cloud environments, we design and deliver scalable, secure, and high-performance systems. We are currently building advanced web and mobile technologies in close collaboration with our partners. Our team is passionate about creating cutting-edge solutions that empower businesses to innovate and grow efficiently.

This is a full-time, on-site role for a Full Stack Engineer located in Vienna, Austria.

You will be responsible for the end-to-end development of modern web applications, working with Java Spring Boot on the backend and Vue.js on the frontend. You will design, implement, and maintain robust, scalable, and high-quality software solutions while collaborating closely with our Backend and Mobile team.

• Develop and maintain backend services using Java and Spring Boot (REST APIs, Spring Security, Spring Data JPA, etc.)
• Build responsive and dynamic user interfaces with Vue.js (Composition API, Pinia, Vue Router, and modern component architecture)
• Design and implement clean, maintainable, and well-tested code across the full stack
• Optimize application performance, scalability, and reliability
• Debug, troubleshoot, and resolve complex technical issues
• Collaborate with cross-functional teams (Product Owner, QA, and other developers) in an agile environment
• Participate actively in sprint planning, code reviews, and technical discussions
• Contribute to architectural decisions and help improve our development processes and tech stack

• 4+ years of professional experience as a Full Stack Engineer
• Strong expertise in Java and Spring Boot (including RESTful APIs, microservices, Spring Security, and database integration)
• Strong hands-on experience with Vue.js (Version 3), including deep understanding of component architecture, reactivity system, VNode/rendering internals, and building reusable Web Components (Custom Elements)
• Experience building scalable, dynamic frontends using server-driven UI patterns, along with modern tooling (Vite, TypeScript, SCSS/Tailwind)
• Experience integrating and working with advanced UI libraries and tools such as PrimeVue, Monaco Editor, and Vue Flow in complex applications
• Experience designing, building, and maintaining production-grade full-stack web applications
• Strong understanding of software development best practices, clean code principles, testing (unit + integration), and CI/CD
• Excellent problem-solving skills and ability to work effectively in a collaborative team environment
• Familiarity with agile methodologies (Scrum/Kanban) and tools like Jira
• Bachelor's degree in Computer Science, Software Engineering, or a related field
• Fluent in English; German is a strong plus