Backend Developer

Backend Developer
SICPA - Madrid, Spain
50,000 €- 60,000 €
Full Time
IT & Software Development
, backend Java Kotlin

To help build the next generation of trusted digital identity system, we are looking for a purpose driven, experienced sr. backend developer to join our fast-growing team:  BACKEND DEVELOPER


  • Build and maintain a portfolio of high performing key technology building blocks powering our products.
  • Develop pluggable, versioned protocols defined through a community specification process, including contributing to the specification and providing implementation experience feedback.
  • Design and review software architecture.
  • Design and build APIs to expose a useful abstraction for client business services, enabling suitable control while hiding complexity.
  • Write extensive unit tests for your code to ensure ongoing coverage of the codebase (currently with > 98% coverage).
  • Contribute to standards and best practice for software engineering.



  • You have a strong developer experience in languages such as Kotlin, Python and/or Java. Besides being an experienced developer that can effectively write high quality, scalable code that powers novel solutions.
  • You have proven hands-on experience in building large scale systems and understand all relevant concepts of the backend domain.
  • You can deal with a degree of uncertainty and transform that into strong requirements and high performing software. Experience with large scale distributed systems is an advantage.
  • You understand and apply security and data protection mechanisms, and have experience in developing scalable, could-native deployment applications; specifically, containers, orchestration platforms (Docker/Kubernetes/Helm), APIs (eg gRPC/REST) and systems based on messaging architecture (eg Kafka).
  • You understand and can articulate the impact of technology choices.
  • You are a team-player that can communicate comfortably in English. French is a plus.


  • Our success comes from our highly skilled and talented employees.
  • Respectful entrepreneurship and a long-term vision are key for success.
  • Our people contribute to a more secure world.
  • Diversity at all levels of an organisation is a strength.

We offer an exciting and challenging role, with great potential for personal development within a unique organization in a fascinating and fast-growing industry. Your file will be handled with upmost confidentiality and discretion.