Backend Intern: Build Production APIs in Vienna (Hybrid)

Journi GmbH; Wien; Hybrid; EUR 20,000 - 24,000; Full time

Benefits offered by this job

Hybrid work model (40% home office)

Vienna transport card covered

Job summary

Journi GmbH is seeking a backend internship candidate to join our Vienna team. You will work on real features and production systems, contributing to a high-scale photoc book platform while learning from experienced engineers.

Open to students or recent graduates with at least 32 hours/week availability, a valid EU work permit, and based in Vienna. The internship runs 4-6 months, with a start date negotiable.

Qualifications

• Basic to intermediate experience in backend development
• Familiarity with at least one JVM language (Java, Kotlin, or Scala)
• Understanding of REST APIs and how web apps communicate
• Basic knowledge of databases (SQL or NoSQL) and/or algorithms
• Some exposure to Git and collaborative workflows
• Curiosity, ownership, and willingness to learn by doing
• Good communication skills and collaborative mindset
• EU/Austria work right and Vienna-based or willing to relocate

Responsibilities

• Contribute to the Photobook software solution written in Scala
• Support development of new features and REST APIs used by millions
• Collaborate with engineers, product designers, and managers
• Improve performance, scalability, and reliability of systems
• Identify and fix bugs and technical debt
• Write clean, maintainable code and participate in code reviews
• Learn how production systems are built, tested, and deployed

Skills

Backend development

JVM language

REST APIs

SQL/NoSQL databases

Git

Curiosity & learning by doing

Communication & collaboration

EU work permit / Vienna-based

Tools

PostgreSQL

Redis

Job description

Journi GmbH is seeking a backend internship candidate to join our Vienna team. You will work on real features and production systems, contributing to a high-scale photoc book platform while learning from experienced engineers.

Open to students or recent graduates with at least 32 hours/week availability, a valid EU work permit, and based in Vienna. The internship runs 4-6 months, with a start date negotiable.