Senior Java Developer

HN Services Portugal; Lisboa; On-site; EUR 60,000 - 80,000; Full time

Job summary

HN Services Portugal seeks a Senior Java Backend Developer to join an international banking environment and contribute to the development and evolution of Java-based applications and distributed systems. You will design robust backend solutions, lead complex backend functionalities, and collaborate with teams to ensure alignment with the application architecture.

The role emphasizes performance, scalability, and reliability.

Qualifications

• 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.

Responsibilities

• 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 quality and scalability.
• Troubleshoot complex technical issues and drive performance and reliability improvements.

Skills

Independent work

Problem solving

Ownership

Team collaboration

Education

Degree in Computer Science, Software Engineering, Information Technology or related field

Tools

Java

Spring

Struts

Kafka

Microservices

Job description

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.
• 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.