Your skills: Backend: Proficiency in Kotlin and/or Java for backend development (at least 4 years) Strong experience with Spring Boot framework. Experience with Docker and containerized applications. Familiarity with cloud platforms such as AWS, Azure, or Google Cloud. Experience in designing and consuming RESTful APIs. Knowledge of microservices architecture and patterns. Experience with on-premise and cloud-based deployments. Proficiency in secure coding practices and understanding of security best practices for backend systems. Familiarity with scalability strategies and performance optimization in backend services. Knowledge of monitoring and observability tools (e.g., Prometheus, Grafana, ELK). Familiarity with CI/CD processes, including GitHub Actions, GitLab CI, or similar tools. Experience with version control systems (e.g., Git). Experience with database technologies, both relational (e.g., PostgreSQL) and NoSQL (e.g., MongoDB). Frontend: Proficiency in React.js for building business applications (forms, lists, controls). Experience with modern frontend development tools (e.g., Webpack, Babel, npm). Strong understanding of HTML5, CSS3, and JavaScript/TypeScript. Understanding of state management frameworks (e.g., Redux). Nice to have: Knowledge of additional programming languages or tools. Experience in system architecture design and understanding of distributed systems. Proficiency in designing user interfaces with a focus on usability and performance. Knowledge of building automation and physical access control systems. CoreWillSoft GmbH is a German-based company working on secure IoT software solutions and services. The mission of CoreWillSoft is to help businesses protect their assets, employees, and data by providing advanced software solutions and services in the security industry. We are looking for a Full Stack Engineer (Java/Kotlin, React) to work on our products and services that are being used by multiple businesses across Western Europe. The main focus is on the BE part (~70%). Join us to work on cool and innovative projects involving high-security hardware in a nice international and creative environment that allows you to learn and advance! We offer: Great customer impact: the solutions you deliver will be used by thousands of large and small businesses. Ability to shape the product, working, and delivery process Great team spirit and Team Events Agile and innovative environment Cutting-edge technology Working on the latest Hardware Convenient office or co-working, depending on your location ,[Design, develop, and maintain web and mobile applications (from scratch and ongoing). Backend part ~70%, Frontend part ~ 30%., Ensure high-quality, reliable, and scalable code, following best practices in testing and documentation., Collaborate within a Scrum team: attend daily standups, demos, and communicate effectively with the team and clients.] Requirements: Java, React, Cloud, Spring, Kotlin, KMP (Kotlin Multiplatform), AWS, CI/CD, OWASP, DB, Cryptography, Cybersecurity Tools:. Additionally: Training budget, International projects, Small teams, Paid vacation, Public holidays.