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Senior Java Developer

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Onsite

Senior Java Developer

HN Services Portugal

Senior Java Developer

Skills

JavaMicroservicesSpring BootKafka

13 days ago

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Important information


Contract type:

Permanent

Location:

Lisbon, Portugal

Work mode:

Onsite

Published on:

6 October 2026

What they need


🚀 We're looking for a Senior Java Backend Developer

Who We're Looking For

We are looking for a Senior Java Backend Developer to join an international banking environment, working on the development and evolution of Java-based applications and distributed systems . The role involves developing robust backend solutions, contributing to architectural decisions and driving the evolution of scalable and resilient systems.

✅ Professional Experience & Main Tasks

  • Develop and maintain backend applications using Java.
  • Design and implement robust, scalable and resilient solutions using Java, Spring and Struts .
  • Develop and evolve microservices-based architectures and distributed systems.
  • Work with Kafka and event-driven architectures.
  • Contribute to technical and architectural decisions , ensuring the quality and scalability of solutions.
  • Analyse existing systems and identify opportunities for technical improvements and optimisation .
  • Lead the development and implementation of complex backend functionalities.
  • Collaborate with technical teams to define solutions and ensure alignment with the overall application architecture .
  • Support the continuous evolution, modernisation and improvement of existing applications.
  • Troubleshoot complex technical issues and contribute to ensuring performance, scalability and reliability .
  • Share knowledge and provide technical guidance to other developers when required.

✅ Skills & Experience

  • Degree in Computer Science, Software Engineering, Information Technology or a related field.
  • 5+ years of professional experience in Java backend development.
  • Strong experience with Java, Spring and Struts .
  • Strong knowledge of Kafka and distributed systems.
  • Strong experience with microservices architectures .
  • Good understanding of scalable, resilient and high-availability architectures .
  • Experience with software architecture and technical design .
  • Strong problem-solving and analytical skills.
  • Ability to work independently and take ownership of technical solutions.
  • Previous experience in banking or financial services is a plus.

🌍 Language Requirement

  • English (Expert)

💼 Work Setup

Hybrid Mode (50/50)

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