Junior DevOps Engineer (m/w/d)

by cost type or usage behavior)
- Online administration of invoices and billing options
- View all invoice documents
- Product-specific analyses and functions

We are looking for an additional developer to support us in the next implementation phase in order to migrate our next batches of customers to the new solution in time.

For this role, an integrity check is performed before hiring. This includes the check of both the criminal and the debt collection records (SL2).

Main Tasks:
- Designing, developing and operating effective and innovative functionalities for a customer- and agent- facing B2B billing system
- Developing and refactoring complex parts for the backend of the system with Java, Spring Boot and OPA
- Implementing user-friendly frontend elements with React
- Refining and optimizing database queries to enhance the overall system performance
- Conducting code reviews, ensuring that the team's output is of high quality and aligned with our overall technical objectives
- Performing deployment and releasing activities as well as monitoring and managing system errors
- Taking responsibility for high system availability also outside office hours as part of the on-call service

Education: 
- Bachelor's Degree in Informatics or equivalent education
- Any additional courses and certifications in-line with the described tasks and/or skills are a plus

Skills must have:
- High-level English skills (C1) are mandatory
- Baseline software engineering skills: git with PR-based workflow, CI/CD practices, SCRUM/SAFE agile notions. . .
- Strong Java programming experience, including Spring/Spring Boot and Maven
- Strong SQL and relational database design experience, ideally with PostgreSQL
- Experience with containers (Docker) for application packaging
- Experience with system design and architecture
- Integrity Check SL2 documents (criminal record and debt collection records) must not be older than 3 months at the time of verification and must cover the last three years

Skills nice to have:
- Experience with GraphQL
- Experience in frontend SPA development using Javascript and React
- Skills in French and/or German are a non-neglectable plus