Senior Software Engineer (m/w/d) Java/Fullstack

Your mission As a Senior Software Engineer with a focus on Java, you join our development team for our product “Swing” and play a key role in evolving and stabilizing a business-critical, established system. “Swing” combines mature on-premise components with modern integrations and forward-looking roadmap initiatives. In this role, you work hands-on on Java-based backend components, drive technical improvements, and ensure long-term stability, performance, and maintainability. You move confidently between maintaining existing systems and shaping future developments, contributing your expertise to improve architecture, code quality, and engineering practices. Your Responsibilities: You develop and maintain Java-based backend components within the “Swing” product. You work on integrations and interfaces within a mature software ecosystem. You analyze existing structures and drive refactoring and modernization efforts. You design robust, scalable solutions with performance and stability in mind. You collaborate closely with product management, support, and adjacent teams. You actively use modern development tools – including AI-assisted tools – and critically evaluate their outputs. You ensure high code quality through testing, reviews, and clear standards. You contribute to improving architecture and engineering practices. Your profile Several years of professional experience in Java backend development (e.g. Spring or comparable frameworks). Experience working in mature or legacy-heavy system environments. Knowledge of Kotlin is an advantage, particularly in hybrid or evolving codebases. Solid experience with SQL databases, data modeling, and performance optimization. Practical experience with container technologies (Docker) and ideally Kubernetes. Familiarity with cloud environments such as AWS is desirable. Strong understanding of API design and integration within complex system landscapes. High standards for code quality, testing, security, and documentation. Reflective and responsible use of AI-supported development tools. Very strong German language skills (minimum C1) as well as good English skills (minimum B2) are mandatory. Why us? A responsible task with meaning: We build software to digitize the social care sector and thus enable our customers to focus on a better life for their clients by giving them more time for care & support A remote working time model to keep your everyday life flexible Exciting, challenging tasks in a dynamic, future-oriented environment A culture of appreciation and a harmonious working atmosphere in a growing, international company with opportunities to get involved A creative working environment, flat hierarchies and short decision-making processes Attractive remuneration models, a permanent employment contract contact information If this sounds like you, we look forward to receiving your application including your earliest possible start date, through our online application form!