AAt SQUAD Technology Solutions, an IT outsourcing company, we are building a small, agile team with a strong commitment to doing things right from the very beginning.

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We are currently working with one of our clients to hire a Java Senior Developer with reactive programming for a project in the banking sector.

What are we looking for?

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- 8+ years of Java development experience, including Java 17/21, modern language features, concurrency, and high-performance backend systems.

- Strong expertise with Spring Boot, Project Reactor, RxJava, and CompletableFuture to build scalable and reactive microservices.

- Hands-on experience with gRPC & Protobuf, including streaming RPCs, interceptors, deadlines, and API/schema evolution.

- Solid background in Kafka, Redis, PostgreSQL, and MongoDB,



delivering event-driven and data-intensive applications.

- Strong cloud experience on AWS (S3, IAM, Managed Kafka, container runtimes) and modern distributed architectures.

- Expertise in Docker, multi-architecture container images (amd64/arm64), CI/CD, and cloud-native deployment practices.

- Experience leading large-scale refactoring or migration projects in multi-module codebases, with strong communication skills and C1 English; Python knowledge is a plus.

What are we offering?

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- Freelance contract with immediate onboarding.

- Stable and full time project with an international client. xcskxlj

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Hay opciones de teletrabajo/trabajo desde casa disponibles para este puesto.

📌 Senior Java Developer (RxJava) | Freelance (Remote, 30-33€/h)
🏢 SQUAD Technology Solutions
📍 España