osapiens

Java Backend Engineer

osapiens

full-time

Posted on:

Location Type: Hybrid

Location: Mannheim • Germany

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Tech Stack

CassandraDistributed SystemsElasticSearchJavaMongoDBNoSQLPostgresSOAPSpringSpring BootSpringBoot

About the role

  • 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.

Requirements

  • 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.
Benefits
  • 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
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
JavaJavaEESpringSpring BootPostgreSQLMongoDBCassandraRESTful servicesSOAP web servicesTest Automation
Soft Skills
ownershipmentoringpeer code reviewscollaborationagile mindsetcontinuous learning