CoreWillSoft GmbH

• Design, develop, and maintain scalable backend services using Java/Kotlin and Spring Boot • Contribute to frontend development using React, Angular, or Vue.js • Actively use AI tools (e.g., Claude, Copilot, ChatGPT) to improve development efficiency, code quality, and solution design • Participate in architectural decisions and contribute to system design • Collaborate closely with product and business stakeholders to deliver impactful solutions • Take ownership of features from concept to production • Ensure performance, scalability, and security of applications • Work with cloud infrastructure and modern DevOps practices.

• You will work on products used by businesses across Western Europe. • Our team operates in a scaled agile approach across Europe with a headquarter in Bonn, Germany. • It is responsible for the complete software development lifecycle; including ideation, implementation, and operation of the secure IoT software operating smart buildings and smart homes across the world.

• You will work on products used by businesses across Western Europe. • Our team operates in a scaled agile approach across Europe with headquarters in Bonn, Germany. • The team is responsible for the complete software development lifecycle, including ideation, implementation, and operation of secure IoT software powering smart buildings and smart homes worldwide.

Role Description We are looking for a Full-Stack Software Engineer with strong backend experience in Kotlin/Java and solid Frontend expertise. - You will work on products used by businesses across Western Europe. - Our team operates in a scaled agile approach across Europe with a headquarter in Bonn, Germany. - Responsible for the complete software development lifecycle; including ideation, implementation, and operation of secure IoT software operating smart buildings and smart homes across the world. Qualifications - Proficiency in Kotlin and/or Java for backend development - Strong experience with the 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) - Knowledge of cryptography and security - 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) - Strong experience with React.js or Angular, or Vue - Solid knowledge of TypeScript / JavaScript, HTML5, CSS3 - Experience with modern tools (Vite, Webpack, npm, etc.) - Understanding of state management (e.g., Redux) Requirements - Experience building desktop applications - Experience with Kotlin Multiplatform in production - Knowledge of the modern Kotlin ecosystem (Coroutines, Flow, Compose, Koin, Ktor) - Knowledge of additional programming languages - Experience with system architecture and distributed systems - Understanding of UI/UX design and performance optimization - Knowledge of building automation or access control systems Benefits - 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 technologies - Working on the latest Hardware - Convenient office or co-working, depending on your location

Role Description We are looking for a Software Engineer with strong backend experience in Kotlin/Java and experience in Kotlin Multiplatform / Android development. - You will work on products used by businesses across Western Europe. - Our team operates in a scaled agile approach across Europe with a headquarter in Bonn, Germany. - Responsible for the complete software development lifecycle; including ideation, implementation, and operation of the secure IoT software operating smart buildings and smart homes across the world. Qualifications - Proficiency in Kotlin and/or Java for backend development. - 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). - Knowledge of cryptography and security. - 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). - Experience with Kotlin Multiplatform and/or Android development. - Strong knowledge of Kotlin Coroutines and Flow. - Experience with Jetpack Compose (or Compose Multiplatform). - Familiarity with dependency injection frameworks (e.g., Koin). - Experience with networking libraries such as Ktor. Requirements - Experience building desktop applications. - Experience with Kotlin Multiplatform in production. - Knowledge of modern Kotlin ecosystem (Coroutines, Flow, Compose, Koin, Ktor). - Knowledge of additional programming languages. - Experience with system architecture and distributed systems. - Understanding of UI/UX design and performance optimization. - Knowledge of building automation or access control systems. Benefits - Meaningful Impact: Build solutions that are used every day by thousands of businesses; your work will directly improve real-world security and connected device experiences. - Product & Process Ownership: Help shape not only the product, but also how we build and deliver it; your ideas and decisions will have visible impact. - Industry Influence: Contribute to key security standards and best practices, staying ahead of the curve in a fast-evolving industry. - Modern Tech Stack & Hardware: Work with the latest hardware and the tools you need to do your best work. - Time Off & Flexibility: Vacation days, paid sick leave, and public holidays in line with German legislation plus flexibility built around outcomes, not micromanagement. - Learning & Development Budget: We support continuous growth by covering hard and soft skills courses, trainings, and access to e-learning platforms. - Coworking Support: Prefer not to work from home every day? We offer coworking compensation so you can choose the environment that fits you best. - Language Learning Support: Monthly fixed compensation you can use to improve your English or German through the learning format of your choice. - Strong Team Culture: Open collaboration, a flat structure, and thoughtful onboarding; your voice is heard, and you can make an impact from day one.

• Develop, maintain, and enhance Windows-based desktop applications using .NET. • Maintain and develop DLLs implemented in C++. • Implement CI/CD pipelines to support development and QA processes. • Serve as a liaison between the customer and the development team, gathering and synthesizing feedback into actionable tasks. • Ensure on-time delivery of high-quality products. • Collaborate with cross-functional teams, including engineering, sales, marketing, and support, to deliver successful projects. • Identify potential project risks and issues and propose mitigation strategies.