Build Scalable Systems: Design and develop reliable backend systems using Java and modern technologies to power the osapiens HUB.
Develop Core Logic: Implement business logic for enterprise-grade solutions and solve complex real-world challenges.
Integrate Platforms: Build and maintain RESTful and GraphQL services that support seamless integrations and client needs.
Collaborate End-to-End: Work with engineers, product managers, and designers to deliver integrated, high-quality solutions.
Mentor & Elevate Quality: Support junior engineers and promote best practices in coding, testing, and backend development.

Passion for Scalable Systems: You’re motivated by building distributed, high-performance backend systems that create real-world impact.
Java & Spring Expertise: Strong experience with Java/JavaEE and Spring Framework, with deep knowledge of scalable backend architectures.
Database & API Skills: Familiarity with NoSQL databases (e.g., Cassandra, ScyllaDB) and strong experience designing RESTful and GraphQL APIs.
Quality & Reliability: Proficiency in automated testing, CI/CD practices, and building fault-tolerant distributed systems.
Modern Engineering Toolkit: Experience with OpenSearch or Elasticsearch, solid Git skills, an agile mindset, and exposure to DevOps practices.

A purpose-driven mission tackling complex sustainability challenges while working alongside global industry pioneers at a fast-growing unicorn company
Room for creativity through collaborative teamwork and an open communication culture
Flexibility and team bonding with our hybrid work options
Fuel for your growth journey, both personally and professionally
Sustainable mobility options, promoting eco-friendly commuting solutions
Fun team events and outings with our global teams
Inspiring workspaces in Mannheim and beyond

Senior Java Backend Engineer

Key skills