You will develop the core systems behind our product and actively shape our backend architecture.
Design, develop and optimize scalable backend services and REST APIs using Kotlin, Spring and Gradle.
Model and continuously optimize the performance of our relational database systems (SQL).
Work closely with the frontend and AI teams to ensure clean interface integration and reliable implementation of business logic.
Security as an integral part of the architecture (Secure by Design).
Contribute to our cloud infrastructure and CI/CD pipelines.
Actively participate in the agile development process and promote a culture of continuous learning.

Degree in Computer Science or a comparable qualification
Experience developing backend applications with Kotlin, Spring and Gradle
Solid experience working with relational database systems (SQL)
Experience with collaborative development processes and version control (Git)
Passion for complex server and data architectures
Strong problem-solving skills and adaptability in a fast-paced product development environment
Good communication skills and a willingness to continue learning
Fluent in German and English
Advantageous: knowledge of JavaScript, Python, Azure DevOps or Infrastructure as Code (Terraform)

Ongoing training and an ambitious working environment
Work with state-of-the-art equipment and up-to-date technologies
Flat structures, short decision paths and direct influence on the product
Secure, permanent employment
Rapid career development and internal growth opportunities in an ambitious AI startup
2 home office days per week plus a modern office in a central location in Linz

Backend Developer – Kotlin, Spring

Key skills