OSAPIENS – JOIN US IN BUILDING A SUSTAINABLE FUTURE!

At osapiens, we are committed to empowering businesses economically while promoting human rights and establishing ecologically sustainable and responsible corporate governance as a global standard.
We support global enterprises in over 60 countries in integrating sustainability and positioning themselves for the future. To achieve this, we develop comprehensive SaaS solutions that create transparency and sustainable growth across the entire value chain, meet ESG requirements, and automate manual processes.
We are looking for a talented Senior Java Engineer to join our dynamic team and help shape the future of our osapiens HUB. In this role, you will be pivotal in designing, developing, and refining the architecture of our backend services. You will lead the way in delivering scalable, high-quality Java-based solutions, ensuring that our enterprise-grade platform continues to push boundaries in the SaaS space.
The osapiens HUB is a cloud-based platform that helps businesses manage their sustainability, compliance, and transparency efforts more easily. The HUB offers ready-made software solutions that automate compliance with environmental and social regulations, helping businesses track and improve sustainability with minimal manual effort. It’s user-friendly, adaptable, and optimizes existing resources.
Think of it as an all-in-one toolkit for businesses looking to operate more sustainably while keeping up with legal requirements without getting bogged down in technical or administrative hassles.
This role is based in Mannheim, a vibrant tech hub at the heart of Germany, where you’ll collaborate with a talented, forward-thinking team. We embrace a hybrid work model, with three days a week in the office, ensuring the perfect balance between in-person collaboration and remote flexibility.

YOUR EXPERIENCE

• Expertise in Java/JavaEE and Spring Framework, with a deep understanding of building high-performance, scalable backend systems
• Familiarity with NoSQL databases like Cassandra, ScyllaDB, or similar
• Strong web services expertise in designing and integrating RESTful and GraphQL APIs
• Proficient in automated testing and CI/CD practices to ensure continuous delivery of high-quality code.
• Experience with distributed systems, focusing on scalability and fault tolerance
• Hands-on experience with search technologies like OpenSearch, Elasticsearch, or similar
• Proficient in Git for version control and collaborative development
• Agile mindset with experience working in cross-functional teams and sprints
• Experience with DevOps

• Design and build scalable, reliable backend systems that power the osapiens HUB, using Java and modern technologies
• Develop core business logic to support enterprise-grade software solutions and solve complex real-world challenges
• Collaborate with cross-functional teams (engineers, product managers, designers) to create seamless, integrated end-to-end solutions
• Develop and maintain web services (RESTful, GraphQL) to integrate with various platforms and support clients’ needs
• Ensure high-performance, scalable solutions that meet the growing demands of global enterprises
• Mentor junior engineers and promote best practices in coding, testing, and development processes