Senior Java Engineer (Java 17/21) | Remote/Hybrid
Location: Spain
Contract Type: 1 year + Extension
Hourly Rate: €30
We are looking for an experienced Senior Java Engineer to join a talented engineering team building scalable, resilient, and high-throughput backend services. This is an opportunity to work with modern Java technologies, event-driven architectures, cloud-native platforms, and cutting-edge distributed systems
Key Responsibilities:
Designing and developing high-performance microservices using Java 17/21 and Spring Boot .
Building and maintaining distributed systems leveraging gRPC , Protobuf , and event-driven architectures.
Developing reactive and asynchronous applications using Project Reactor , RxJava , or modern Java concurrency frameworks.
Creating scalable integrations with Kafka , databases, and cloud-native services.




Driving engineering excellence through robust testing, code reviews, design documentation, and technical leadership.
Collaborating across teams to deliver secure, reliable, and maintainable solutions.
Contributing to architecture decisions, system design reviews, and continuous improvement initiatives.
Experience:
8+ years of professional Java development experience
3+ years working with Java 17 or Java 21
Spring Framework / Spring Boot
Production-grade backend services
Microservices architecture
If you are a passionate and dedicated IT Professional looking to join a dynamic and innovative organization, we encourage you to apply.

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