Senior Fullstack Engineer, Node.js & React.js (m/f/d)

Job Description

About the role:

• Design and implement complex features across our web-shop, translating business requirements into scalable and maintainable solutions .
• Extend and build backend services across domains, ensuring clean interfaces and well-defined API contracts.
• Contribute to frontend development using ReactJS , with attention to performance and maintainability.
• Create and consume APIs following contract-first principles and ensuring backward compatibility.
• Implement scalable asynchronous communication patterns using RabbitMQ .
• Identify and address performance bottlenecks, reliability gaps, and technical debt within your scope.
• Take full ownership of your features: design, implementation, testing, deployment, and post-release monitoring.
• Participate actively in code reviews and architectural discussions , contributing thoughtful technical input.
• Support and mentor less experienced engineers through collaboration and example.
• Contribute to the continuous improvement of development processes and engineering standards .

Qualifications

About You:

• You demonstrate seniority through impact, ownership, and sound technical judgment .
• You are comfortable working independently on complex tasks while aligning with the broader team architecture .
• You have strong experience building and operating scalable services with Node.js and TypeScript.
• You have solid expertise in RESTful API design, HTTP semantics, and distributed system fundamentals.
• You understand asynchronous communication patterns and event-driven architecture .
• You bring a DevOps mindset and are comfortable with Docker, Kubernetes, CI/CD pipelines, and production monitoring.
• You proactively identify risks and trade-offs , and communicate them clearly.
• You collaborate effectively with product, design, and other engineering teams .
• You value open feedback, continuous learning , and shared ownership .

Additional Information

About your benefits: In order to provide you with the best possible support for your individual needs - whether it‘s living a healthy life, having enough time for your family, or developing your skills - we offer a wide range of different, site-specific benefits:

• Welcome days: We want you to feel at home with us from the very first day. Therefore, we welcome you with our comprehensive onboarding program.
• Personal development: Grow! We support and encourage your individual development through various in- and external trainings.
• Work from Home: If your job does not require you to be present in the office, we can arrange the place you work from individually - even for up to 20 days a year anywhere in the EU.
• Mental Health: Get quick and professional help from psychologists of nilo if you feel overwhelmed in private or professional life. Anonymous and free of charge.
• Mobility: We provide our employees with a fully costed Deutschland Ticket which can be used at any time. Click here to learn more.