Senior Java Backend Engineer - Cloud-Native Microservices

Hexa Group; Lisboa; Híbrido; EUR 90 000 - 130 000; Tempo integral

Resumo da oferta

Hexa Group in Lisbon is seeking a Senior Java Backend Developer to contribute to high-criticality digital platforms in financial services and payments. You will design, build and optimize cloud-oriented backends and APIs using Java and Spring Boot.

You will work on microservices, ensure security, observability, and performance, participate in architecture discussions, and collaborate with SRE, QA and security teams to deliver resilient systems.

Qualificações

• Senior experience in Java backend development with enterprise design.
• Experience with distributed systems, microservices and APIs in high‑criticality environments.
• Quality‑oriented mindset focusing on secure development, observability and testing.
• Collaborative, feedback‑oriented with strong knowledge sharing.
• Willingness to learn, adapt and contribute to modern software architectures.

Responsabilidades

• Develop and maintain backend services, APIs and business logic using Java and Spring Boot.
• Design and evolve microservices aligned with cloud native principles.
• Write unit, integration and contract tests and support QA activities.
• Participate in technical solution design with architecture teams.
• Collaborate with architecture, QA, SRE, security and business stakeholders.
• Build secure and observable software with logging, tracing and metrics.
• Contribute to technical documentation for services and APIs.
• Analyze incidents in development, QA and certification environments.

Conhecimentos

Java

Spring Boot

Spring ecosystem

Spring Cloud

Microservices architecture

REST APIs

Distributed systems

JUnit

Mockito

Testcontainers

Git

CI/CD

DevSecOps practices

Unit testing

Logging, metrics and tracing

Ferramentas

Docker

Kubernetes

MongoDB

CockroachDB

NewSQL databases

Relational databases

NoSQL databases

Descrição da oferta de emprego

Hexa Group in Lisbon is seeking a Senior Java Backend Developer to contribute to high-criticality digital platforms in financial services and payments. You will design, build and optimize cloud-oriented backends and APIs using Java and Spring Boot.

You will work on microservices, ensure security, observability, and performance, participate in architecture discussions, and collaborate with SRE, QA and security teams to deliver resilient systems.