Java Backend Engineer (m/f/x)

osapiens is a company building the AI-driven osapiens HUB, a multi-tenant platform for enterprise solutions. They are seeking a Java Backend Engineer to join their team in Mannheim, working on the core backend architecture of the platform.

• Design & Develop: Build and implement Java-based enterprise software with a strong focus on backend architecture and scalable system design.
• Own Features: Take full ownership of features from concept to delivery and ongoing support.
• Shape Architecture: Contribute to architectural decisions, technical discussions, and design planning in an agile environment.
• Mentor & Review: Support junior developers and conduct peer code reviews to uphold high-quality coding standards.
• Collaborate & Grow: Work closely within an agile development team, learning from senior engineers and continuously growing your technical and professional skill set.

• Passion for Platform Engineering: You’re excited about building scalable, distributed backend systems that create real-world impact for global companies.
• Java Expertise: Solid experience with Java or JavaEE, ideally with Spring or Spring Boot frameworks.
• Database Skills: Proficiency with relational and/or NoSQL databases such as PostgreSQL, MongoDB, or Cassandra.
• API Development: Strong experience building and integrating RESTful and/or SOAP web services.
• Test Automation: Experience implementing and maintaining automated tests (unit, integration, end-to-end).
• Distributed Systems Knowledge: Understanding of common challenges such as scalability, consistency, and availability.
• Modern Engineering Practices: Familiarity with Git and a collaborative, agile mindset.
• Bonus Skills: Hands-on experience with search and analytics engines like OpenSearch or Elasticsearch is a plus.

• 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