Salary: 65.000 - 90.000 € per year Requirements: Minimum 5 years of professional software development experience. Minimum 1 year in a technical leadership role. Hands-on experience with backend and frontend development in Node.js and React.js. Degree in Computer Science or equivalent practical experience. Excellent communication skills in German and English. Strong expertise in IoT data processing with focus on time-series data. Strong expertise in modern web technology (React/TypeScript). Experience with scalable architectures and containerization (e.g. Docker/K8s or similar). Experience with Infrastructure as Code. Experience with CI/CD pipelines and version control (Git). Experience in DevOps organizational culture. Experience with modern software architecture with regard to testability. Ability to oversee complex software environments, understand dependencies, and design for scalability. Highly structured and organized, with excellent problem-solving skills. Strong attention to detail combined with a pragmatic approach to delivery. Responsibilities: Lead technical design and implementation of backend and frontend components. Refactor and decouple system components to improve scalability and maintainability. Generalize business logic for extensibility and future growth. Expand monitoring and observability features to track usage, performance, and errors. Promote initiatives, for example migration to TypeScript, introduction of layered architecture, updating libraries and introduction of new tooling. Ensure deployment of applications in a scalable, containerized environment. Maintain high code quality by conducting code reviews, best practice enforcement, workshops. Lead technical team meetings. Collaborate with the Product Owner on requirements and priorities. Technologies: Backend CI/CD DevOps Docker Frontend Git IoT Product Owner React TypeScript Web NodeJS Embedded Support More: At Tec4med LifeScience GmbH, we are a leading company in innovative supply chain visibility solutions for the life sciences industry. We offer an exciting opportunity for an experienced Lead Software Engineer: Node.JS / React to join our team in Darmstadt. Our IoT products and digital platforms enhance the safety and efficiency of global supply chains, and as part of Cryoport Inc., we are committed to technical excellence. We provide a supportive environment with opportunities for professional growth and development. last updated 9 week of 2026