Fullstack Developer

With a team of product and IT experts, the future position holder will be responsible for further developing beyonnex's Enterprise-Suite and services to ensure a stable and scalable technological foundation for the strategic development of the group of companies. In addition, the following tasks will be part of your position:

• Together with your team, you develop and maintain full-stack software solutions for an Android-based installer app and supporting backoffice tools in the field of real estate energy management.
• Implement installer workflows that guide technicians through device installation, replacement, including full digital documentation of installations.
• Build and operate backend services and APIs for data processing, validation, health checks, and integration with downstream systems (e.g. dispatching, billing, heat cost calculation).
• Design and maintain data models for buildings and installed devices, ensuring data quality and consistency.
• Collaborate closely with product, UX, and domain experts to deliver reliable, user-friendly solutions and continuously improve the platform.
• Participate in code reviews, architectural discussions, and continuous improvement of development practices, performance, and system stability.
• Support the full software lifecycle, from concept and implementation to testing, deployment, and maintenance.

• Proactive, problem solving mindset
• Ability to communicate complex ideas in clear and concise way (in English)
• Strong collaboration skills and experience working closely with other teams (product, frontend, QA, DevOps, etc.)
• At least 5 years of experience working as a Software Developer
• Proficiency in development with Kotlin, Java or similar (JVM) languages
• Professional working experience with a frontend framework like Angular, React or Vue.js
• Solid understanding of object-oriented design, clean code principles, and software architecture
• Experience designing, implementing, and consuming RESTful APIs
• Good knowledge of relational databases (e.g. PostgreSQL, MySQL) and SQL
• You're located in Germany, * Proficiency with observability and monitoring tools like Grafana, Prometheus etc.
• Experience working with event-driven architectures and messaging systems such as Apache Kafka
• Knowledge of containerization and orchestration technologies (Docker, Kubernetes)
• Experience with CI/CD pipelines and automated testing practices
• Understanding of security best practices (authentication, authorization, OWASP)
• German language skills

We have a modern environment with flat hierarchies. Our colleagues very often highlight our great spirit to achieve our goals. Our company is a place to be yourself, aim high, taking care of each other and growing without limits. Additionally, we offer following benefits:

• Modern hardware and the opportunity to work with cutting-edgetechnologies
• Besides our 100% remote work possibility, we offer an office in Hamburg (Hammerbrook) for a more personal collaboration
• Space and budget for personal growth
• Flexible working hours
• 30 days vacation
• Events for employees to celebrate our achieved goals and great team-spirit
• Community of Practice and Knowledge Nuggets for improving your skills
• Corporate Benefits and Mental Health Programme
• JobRad-Leasing
• Coffee, tea and water for free in our office