JAVA Backend Engineer (65k-70k REMOTE in Spain working for …, Lérida

At ???????????? ???????????????????? | ???????????????????????? & ????????????????????????, 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.

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???? 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) delivering non-blocking services in production.
- ⚡ Build high-throughput, low-latency APIs with a pragmatic approach to performance, clean design, and real-world trade-offs.
- ????️ Design and develop cloud-native microservices in Java, focusing on scalability, resilience, and maintainability (API-first mindset).
- ☁️ Proven experience on Azure or AWS, building and running services in modern cloud environments (managed services, networking, security basics).
- ???? Own API contracts (REST/OpenAPI): versioning, backward compatibility, and smooth integrations across teams and systems.
- ???? Deliver with confidence using CI/CD and engineering best practices (code reviews, quality gates, automated testing, standards).
- ???? Act as a senior technical reference: collaborate with product/stakeholders, mentor teammates, and support production with incident handling + root-cause improvements.

???? What does our client offer?

- Immediate start with a permanent contract.
- Salary range: €65K–€70K depending on experience and skills.
- REMOTE work model, 38-hour workweek, versátil hours, and career development opportunities.
- 23 vacation days, health insurance, social benefits, remote work allowance, high-end laptop and accessories Postúlate en Kit Empleo: kitempleo.es/empleo/6u4i9q