Are you passionate about building scalable backend systems, modern cloud-native applications, and high-performance distributed architectures?

We're looking for a

Senior Backend Engineer

to join an international technology team working on the modernization of large-scale enterprise platforms. You'll play a key role in transforming legacy systems into modern microservices while contributing to the design of highly available, event-driven solutions used by thousands of users.

Location:

Remote (must be based in Portugal)

Languages:

Fluent in Spanish (mandatory)

What you'll be doing: Lead the modernization of legacy monolithic applications into scalable microservices. Design and develop robust

Java/Spring Boot

backend services following API-first principles. Build and maintain high-performance

RESTful APIs

using

OpenAPI/Swagger . Develop event-driven architectures using

Apache Kafka

and streaming technologies. Deploy and operate cloud-native applications on

AWS

and/or

GCP

using

Docker

and

Kubernetes . Improve delivery pipelines through

CI/CD

automation and DevOps best practices. Ensure high code quality through unit and integration testing, code reviews, pair programming, and Clean Code principles. Take ownership of features throughout the entire software development lifecycle—from design and implementation to deployment, monitoring, and production support. Collaborate with cross-functional and international teams to deliver reliable, scalable, and maintainable solutions.

What we're looking for: 5+ years of professional experience in backend software development. Strong expertise in

Java

and the

Spring ecosystem

(Spring Boot, Spring Data). Solid experience designing and building

distributed systems

and

microservices . Hands-on experience with

Apache Kafka

or similar event-driven messaging platforms. Experience with

Docker ,

Kubernetes , and cloud platforms ( AWS

and/or

GCP ). Strong understanding of

REST APIs , OpenAPI/Swagger, and API-first development. Knowledge of CI/CD pipelines and modern software engineering practices. Passion for Clean Code, software craftsmanship, and continuous improvement. Excellent analytical and problem-solving skills. Fluent in Spanish are mandatory.

Senior Java Backend Engineer

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