This is a highly technical role for an engineer who goes beyond frameworks and tools, with a strong understanding ofdistributed 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..What are we looking for?Architecture & High-Scale Systems:Design, build and evolve highly scalablemicroservices and distributed systems, ensuring reliability, maintainability and performance across mission-critical services.Deep Java Engineering:Bring strong expertise inJava, 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 optimiseasynchronous 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, definingdesign patterns, technical standards and engineering best practiceswhile remaining strongly hands-on.Performance & Reliability:Analyse and improve system performance, identifying bottlenecks and designing solutions capable of supportinghigh-volume, low-latency environments .Cloud, Kubernetes & Data:Work withAzure or AWS, Kubernetes and modern data platforms, combiningSQL and NoSQL technologies such as PostgreSQL and Couchbasewithin distributed architectures.AI-Augmented Engineering:Incorporate modernAgentic AI and AI-assisted development tools such as Tabnine and Geminiinto 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 workweek, adaptable hours, and career

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