⚓️
Middle
Senior
Fullstack Developer (Focus: Backend)
What we're looking for
Do you love controlling complex systems in the background, but also want to contribute in other areas? We are looking for tech all-rounders who can master complex architectures and are motivated to participate in various fields. You understand how data needs to flow to perform perfectly across all platforms. As part of our crew, you use AI not just as a tool but as a turbo to blur the boundaries between disciplines and build pioneering software solutions.
Responsibilities
Development of new APIs with Spring & Kotlin and design of database solutions with MongoDB
Orchestration of AI agents for automation of code generation and refactoring
Integration of LLM interfaces into scalable backend services
Architecture, unit testing, and clear documentation in Swagger
Continuous optimization of the developer experience through AI workflows
Close collaboration with the crew in the implementation of web or mobile features
Sparring with design and PM for technically sound and cross-platform solutions
Ensuring seamless performance across all platforms
Qualifications
In-depth knowledge of Kotlin, the Spring Framework, and MongoDB
A deep understanding of common patterns, API standards, and modern architectures
Confident use of AI coding tools like Claude Code
Ambition to think beyond the backend and take technical ownership
Ability to critically validate AI-generated architectures and logic
Communicative, team-oriented, and open to new tech stacks
Nice to have
Know-how in web technologies (React/Next.js) or mobile (Swift/Kotlin Multiplatform)
Experience in integrating LLM interfaces into backend services
Experience with Docker and GitLab CI/CD pipelines
Experience with cloud infrastructure (AWS, DigitalOcean)
Confident handling of API tools like Bruno or Postman
Your salary depends on your qualifications and experience. Based on your seniority, we offer a significant overpayment above the collective agreement minimum salary. Legal notice: The IT collective agreement (ST1) applies to this position. The minimum base salary according to the collective agreement for this position is €3,954.00gross per month (based on 14 times/year).
Benefits
Apply now and become part of our crew!
Use the form or send us your application easily via email to jobs@ahoikapptn.com. We are excited to get to know you!