Senior Java Developer (f/m/d)

Deine Aufgaben

• Design, develop and maintain robust backend systems and enterprise applications using Java and Spring Boot.
• Build and operate distributed, microservices-based architectures, including containerization and deployment on Kubernetes.
• Design, implement and extend REST APIs and integrate with internal and external systems.
• Implement event-driven workflows and asynchronous processing with messaging technologies such as Apache Kafka.
• Model data and optimize performance across relational and non-relational databases (PostgreSQL, Time Series Databases).
• Develop batch and workflow processing, business logic and system integrations.
• Ensure software quality through automated testing, code reviews and adherence to coding standards.
• Contribute to architecture decisions and continuously improve development processes, scalability and system reliability.
• Collaborate with analysts, product owners and other teams to align technical implementation with business requirements.
• For all of these tasks, incorporate AI as a tool.
• Creative freedom in a company that is set to increase its revenue a hundredfold in the coming years.
• A workplace with a true start-up mentality, flat hierarchies, and fast decision-making.
• Use of cutting-edge tools and artificial intelligence for optimization.

Dein Profil

• 5+ years of professional experience in backend Java development.
• Strong command of Java and the Spring / Spring Boot ecosystem.
• Solid experience designing and consuming REST APIs and building microservices.
• Hands-on experience with Docker.
• Proficiency with relational databases (e.g. PostgreSQL, Oracle, MS SQL) and ORM frameworks (Hibernate / JPA).
• Experience with automated testing (JUnit, Mockito) and build/version-control tooling (Maven, Git).
• Comfortable working in an Agile / Scrum environment.
• Professional working proficiency in English (B2 or higher).
• Strong communication and presence, and a solution-oriented mindset.
• Interest in exploring new topics.
• Passion for using AI – you leverage technology to work faster, more accurately, and more efficiently.
• Independent, precise, and pragmatic work style.
• Team player who rolls up their sleeves when the situation calls for it.
• A desire to work alongside colleagues in an office rather than alone at home.

• Experience with event-driven systems and Apache Kafka.
• Cloud platform experience (Azure, AWS or GCP).
• Hands-on experience with Kubernetes.
• Observability tooling (Grafana, Prometheus, OpenTelemetry)
• Work with CI/CD pipelines.
• Identity & access management (Keycloak / SSO) and API security.
• Exposure to frontend frameworks (Angular, Vue or React) for full-stack collaboration.
• Team-lead, mentoring or solution-architecture experience.

Warum wir?

• A meaningful product at the forefront of e-mobility and sustainability.
• Modern technology stack and the autonomy to shape architecture and engineering practices.
• Collaborative, cross-functional team with a strong quality culture.
• Flexible, hybrid working arrangements and room for professional growth.
• Reliable work-life balance – personally guaranteed by the CEO.
• A performance- and team-oriented work environment where success is celebrated together.
• The minimum salary for this position is € 3.954,00 gross/month in accordance with the Austrian IT Collective Agreement (full-time, 38.5h/week). Actual compensation is based on qualifications and experience and exceeds the collective agreement minimum.