onsite
Senior Fullstack Software Engineer - CHECK24 Services Personal GmbH
Software Engineer
Lead end‑to‑end development of credit‑card services, building scalable web applications with React, Node.js, and AWS, while ensuring high performance, security, and maintainability.
About the role
Key Responsibilities
- Design, develop, and maintain full‑stack features for credit‑card products, ensuring seamless user experiences across web and mobile platforms.
- Implement robust RESTful APIs in Node.js, integrate with relational databases (SQL) and cloud services (AWS).
- Collaborate with product managers, designers, and QA to deliver high‑quality releases on schedule.
- Optimize application performance, conduct code reviews, and enforce best practices for security and scalability.
- Mentor junior engineers, share knowledge, and contribute to continuous improvement of development processes.
Requirements
- 5+ years of professional experience in full‑stack development, with strong proficiency in JavaScript, React, and Node.js.
- Hands‑on experience with SQL databases, REST API design, and cloud deployment (AWS).
- Solid understanding of authentication, authorization, and secure coding practices.
- Experience with containerization (Docker) and CI/CD pipelines.
- Excellent problem‑solving skills, strong communication, and a collaborative mindset.
Skills
javascriptreactnodejssqlawsdocker