20 beste Stellen als sr. software development engineer, evaluation in mannheim, bw – aktuell auf Personalsuche

About osapiens
At osapiens, more than 550 talented minds unite around one mission: enabling sustainable growth for businesses worldwide. Founded in 2018 and headquartered in Mannheim, Germany, we have built the AI-driven osapiens HUB - a multi-tenant platform hosting 26 enterprise-grade solutions designed for cross-company collaboration, automation, and compliance. With offices across Europe and the US, we are shaping the future of scalable and secure business technology.

Your Team
Our Backend Engineers (Hybrid in Mannheim · 3 days/week on-site) build the foundation of the osapiens HUB - the cloud platform powering all our SaaS products. The team develops engines for seamless monitoring, real-time data processing, centralized integration, automated workflows, and dynamic app development. Simply put: they build the core technologies that enable global companies to turn compliance into efficiency and sustainable growth.

Your Key Responsibilities

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.

Your Experience

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.

Join us for this and more...

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

About osapiens

osapiens develops holistic Software-as-a-Service solutions that help global companies ensure transparency, efficiency, and trust across their entire value chain. Through its cloud platform, the osapiens HUB, the company leverages innovative technologies, including artificial intelligence, to strengthen businesses while promoting human rights, ecological responsibility, and sustainable corporate governance.

Founded in 2018 and headquartered in Mannheim, Germany, osapiens works with around 2,500 companies in over 50 countries across industries such as consumer goods, automotive, fashion, pharmaceuticals, and medical products. The company is backed by Goldman Sachs and Decarbonization Partners, reinforcing its commitment to responsible, sustainable growth and has reached unicorn status in January 2026.

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