Senior Backend Engineer (Java) – Scalable AI Solutions for a More Transparent Future

You’re a Java expert who wants more than just code – you want to build something that matters? Join a tech-driven team developing modern enterprise solutions that help companies around the world operate more sustainably, transparently, and efficiently.This is your opportunity to bring powerful backend systems to life – tackling real-world problems at scale, and helping shape the architecture of an ambitious platform used globally. Your MissionDesign and implement scalable, high-performance backend systems in JavaBuild core business logic for enterprise-grade applicationsDevelop and maintain RESTful and GraphQL APIsWork hand-in-hand with product managers, designers, and fellow engineers on end-to-end feature deliveryEnsure code quality through robust testing, code reviews, and CI/CD practicesMentor junior engineers and support a strong engineering cultureContribute to the continuous improvement of architecture, performance, and infrastructure What You BringStrong hands-on experience with Java/JavaEE and the Spring ecosystemBackground in building scalable, distributed backend systemsExperience designing and integrating RESTful and GraphQL APIsFamiliar with NoSQL databases (e.g. Cassandra, ScyllaDB)Knowledge of search technologies like OpenSearch or ElasticsearchComfortable working with Git, CI/CD pipelines, and DevOps practicesFamiliarity with modern cloud-native tools and architecturesAgile mindset and a collaborative approach to product development What Awaits YouA purpose-driven engineering team building solutions with global impactA hybrid work model with 3 days/week onsite in MannheimCreative freedom, open feedback culture, and room to growA modern workspace and team events that actually bring people togetherProfessional development budget and personal growth supportSustainable mobility incentives and green commuting options Ready to build scalable solutions that go beyond software?Let’s talk. This role offers the chance to drive technical excellence while contributing to something meaningful – and to grow in an environment that values both.