9 beste Stellen als engineer backend (java) in rhein neckar kreis – aktuell auf Personalsuche

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Java Backend Engineer (m/f/x)

osapiens -
Mannheim

Direkt bewerben

Details zur Stelle

Festanstellung | Vollzeit

Leistungen

Firmenevents

Qualifikationen

Cassandra
NoSQL
MongoDB
SOAP
Verteilte Systeme

Vollständige Stellenbeschreibung

Description

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

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.

Your Experience

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.

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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