Workplace Image Ahoi Kapptn!
Logo Ahoi Kapptn!

Full Stack Developer Back End

Job

  • Level
    Senior
  • Location
    Linz
  • Working Model
    Hybrid, Onsite
  • Job Field
    Web, Full Stack, Back End
  • Employment Type
    Full Time
  • Contract Type
    Permanent employment
  • Salary
    from 50.000 € gross/year

Job Summary

In this role, you will develop APIs using Spring and Kotlin, design database solutions with MongoDB, and orchestrate AI for automation. Additional tasks include unit testing and close collaboration with the crew on web features.

Job Technologies

Your role in the team

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

Responsibility Distribution

  • New Features

  • Maintenance, Bug Fixing

  • Client Support

  • Documentation

  • Organisation

  • Meetings

Our expectations of you

Education

  • Bachelor's degree or equivalent professional experience

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

Experience

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

What we offer

Your salary will be based on your qualifications and experience. Depending on your seniority, we offer a significant increase on the minimum salary set out in the collective agreement. Legal notice: This position is covered by the IT Collective Agreement (ST1). The minimum basic salary under the collective agreement for this position at junior level is €3,267.00 gross per month (based on 14 payments per year).

Benefits

Food & Drink

Work-Life-Integration

Health, Fitness & Fun

Higher Take-Home Pay

Job Locations

  • Location Linz

    Industriezeile 35

    4020 Linz

    Austria

About Your Employer

Ahoi Kapptn!

Ahoi Kapptn!

Linz

We don't follow trends. We create sustainable solutions. Together with our customers, we develop digital products that are technologically advanced and strategically well thought-out. We are not a traditional agency, but a partner who delves deep into business processes, thinks ahead and implements sustainable solutions. Our focus is on technologically advanced and strategically well-thought-out applications: from consulting and UI/UX design to AI applications, native mobile apps, front-end and back-end development, and scalable cloud infrastructures. Together with clients such as the Austrian Football Association, Red Bull, Linde Verlag, ROTAX and LASK, we create digital products that remain successful in the long term. 🔍 Disvover. We question, analyse and discover new opportunities. 🚀 Develop. We build digital products that drive businesses forward. 📈 Evolve. We ensure that solutions grow with you and stand the test of time. To do this, we need crew members who are willing to take on responsibility, boldly break new ground and work passionately to find the best solution. If you want to help shape digital products that last – and make waves in the digital world – then you've come to the right place. 🏴‍☠️

Description

  • Company Size
    1-49 Employees
  • Founding Year
    2020
  • Language
    German, English
  • Company Type
    Digital Agency
  • Working Model
    Hybrid, Onsite
  • Industry
    Consulting, Internet, IT, Telecommunication
Logo Ahoi Kapptn!

Full Stack Developer Back End

Salary
from 50.000 € gross/yearEstimated net salary based on the gross salary in the job ad.from 35.627 € net/year
Location
Linz
Working Model
Hybrid, Onsite
Diversity
Open for all genders
Easy Apply
Easy Apply

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