JAVA Backend Engineer (65k-70k REMOTE in Spain working for UK)

At

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& , a firm specialized in recruitment and talent acquisition, we are looking for a

JAVA backend engineer with more than 3 years working with reactive programming. Our client is a

international firm of tech consultancy that

is working for a retailer developing a high‑performance, internet‑facing API designed to operate seamlessly across both on‑premises environments and the cloud.

We are looking for engineers with a

strong technical foundation , for whom principles like the CAP theorem are not just academic concepts but practical tools used to reason about real‑world systems. We value people who understand trade‑offs in distributed architectures and can apply this knowledge when designing scalable, reliable solutions.

What are we looking for?

8 + years in Java backend engineering , including

3+ years hands-on with reactive programming

(e.g., Vert.x / RxJava / Reactor/AKKA)

de...