Senior Java Backend Engineer – Hybrid (Portugal)

Nimber; Amadora; Híbrido; EUR 65 000 - 90 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Provided computer equipment

Resumo da oferta

Nimber in Alfragide, Portugal, is hiring two Senior Java Backend Developers for a hybrid role. You will craft scalable microservices and cloud-native solutions, focusing on performance, reliability and secure design in a payments technology environment.

The role requires strong Java and Spring Boot experience, with a deep understanding of distributed systems, REST APIs and modern DevOps practices. Onsite attendance in Alfragide is required, and relocation is not offered.

Qualificações

• A university degree.
• Solid professional experience with Java, including concurrency and memory management.
• Professional experience with Spring Boot.
• Understanding of distributed architectures and synchronous vs asynchronous communication.
• Experience designing REST APIs.
• Knowledge of failure-handling and resilience strategies (retries, circuit breakers, fallbacks, idempotency).
• Professional experience with microservices and containerisation (Kubernetes and OpenShift).
• Experience with Git, CI/CD, DevSecOps and code reviews.
• Automated testing with JUnit, Mockito and Testcontainers.
• Availability to work in a hybrid model with onsite attendance in Alfragide.
• Current residence in Portugal; applications from abroad not considered.

Responsabilidades

• Develop and maintain microservices, REST APIs and business logic using Java and Spring Boot.
• Build cloud-native and cloud-agnostic solutions, improving performance, resilience, latency and scalability for high transaction volumes.
• Write unit, integration and contract tests, and assist QA with test automation.
• Contribute to technical design in collaboration with architects.
• Collaborate with Architecture, QA, SRE, Security and Business teams during refinements and code reviews.
• Ensure services are secure and observable by design with proper logging and metrics.
• Produce and maintain technical docs covering services, APIs and decisions.
• Investigate incidents in development and QA environments including on-call analysis.

Conhecimentos

Java

Spring Boot

REST APIs

Concurrency

Distributed systems

Git

CI/CD

DevSecOps

JUnit

Mockito

Formação académica

University degree

Ferramentas

Kubernetes

OpenShift

Docker

Podman

Descrição da oferta de emprego

Nimber in Alfragide, Portugal, is hiring two Senior Java Backend Developers for a hybrid role. You will craft scalable microservices and cloud-native solutions, focusing on performance, reliability and secure design in a payments technology environment.

The role requires strong Java and Spring Boot experience, with a deep understanding of distributed systems, REST APIs and modern DevOps practices. Onsite attendance in Alfragide is required, and relocation is not offered.