Java API Developer — Flexible Hours, REST & OpenAPI Focus

Utimaco Safeware AG in Madrid, Spain seeks an API-focused software engineer to implement, integrate, and document REST API frameworks for GP HSMs. You will design, code, verify, test and document APIs to integrate 3rd party software with Utimaco products.

The role requires 3–5+ years in API development, strong Java/J2EE skills, and experience with OpenAPI and Swagger tools. A university degree in CS or similar is expected, with excellent English communication and a collaborative, agile mindset.