Software Developer | #14122 Developer (m/w/d)

Constaff GmbH

Frankfurt am Main, Hessen, Deutschland
Published Mar 6, 2026
Full-time
Fixed-term

Job Summary

As a Software Developer at Constaff, you will play a central role in shaping digital future projects for high-profile clients. Your day-to-day responsibilities involve the development and implementation of JSON/REST APIs, designing data models, and customizing technical components. You will be deeply involved in the entire software development lifecycle, from setting up CI/CD environments and conducting code reviews to performing error analysis and technical documentation. The role requires a strong focus on code quality and security standards, such as OWASP, within an agile environment. This position is particularly attractive for professionals who value transparency and personal growth, offering the chance to work with modern technologies like AWS, Docker, and Kubernetes. You will benefit from a collaborative team culture, flexible working arrangements, and the opportunity to influence architectural decisions while staying ahead of technical trends.

Required Skills

Education

Degree in Computer Science, Business Informatics, Mathematics, or a comparable qualification.

Experience

  • Professional experience in Java and backend development using Spring Boot
  • Practical experience with JSON, REST services, and API design
  • Experience in test automation, continuous integration, and test-driven development
  • Experience with cloud technologies (e.g., AWS) and container orchestration (Docker, Kubernetes)
  • Professional experience with version control systems like Git
  • Experience in agile environments using Scrum, pair programming, and code reviews

Languages

German (Fluent)

Additional

  • The position is a fixed-term contract (Befristet). Candidates must provide their earliest possible start date and salary expectations upon application.