This is a highly technical role for an engineer who goes beyond frameworks and tools, with a strong understanding of distributed architectures, asynchronous messaging, low-latency systems java reactive programming (Vert.x, RxJava) and software design principles . You will have real influence over architecture and engineering standards, working in lean teams and leveraging modern AI-assisted development tools.
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What are we looking for? Architecture & High-Scale Systems: Design, build and evolve highly scalable microservices and distributed systems , ensuring reliability, maintainability and performance across mission-critical services.
Deep Java Engineering: Bring strong expertise in Java, Spring Boot, Vert.x and RxJava , with a solid understanding of modern functional programming approaches, concurrency and performance optimisation.
Event-Driven & Asynchronous Architecture: Design and optimise asynchronous messaging and event-driven solutions using Apache Kafka , with particular attention to throughput, latency, resilience and system behaviour under scale.
Technical Leadership:



Influence architecture and engineering decisions across multiple initiatives, defining design patterns, technical standards and engineering best practices while remaining strongly hands-on.
Performance & Reliability: Analyse and improve system performance, identifying bottlenecks and designing solutions capable of supporting high-volume, low-latency environments .
Cloud, Kubernetes & Data: Work with Azure or AWS , Kubernetes and modern data platforms, combining SQL and NoSQL technologies such as PostgreSQL and Couchbase within distributed architectures.
AI-Augmented Engineering: Incorporate modern Agentic AI and AI-assisted development tools such as Tabnine and Gemini into engineering workflows to improve developer productivity and support efficient, high-quality software delivery.
What does our client offerr? Immediate start with a permanent contract.
Remoto work model from Spain, 38-hour w

📌 Staff Engineer Java | Spring Boot, Kafka, RxJava, Kafka (España)
🏢 THE BOARD | people & talent
📍 España