Senior Java Engineer - Microservices & Security

HireHi; Lisboa; Presencial; EUR 45 000 - 65 000; Tempo integral

Resumo da oferta

Noesis in Lisbon, Portugal is seeking an experienced Java developer to design, build, and maintain high-availability microservices using Spring, Java 8+, and modern architectural patterns. You will optimize concurrency and SQL/NoSQL performance, conduct code reviews, ensure security and compliance, and collaborate with cross-functional teams across product, technical, and testing units.

The role requires strong problem-solving abilities, autonomy on complex challenges, and excellent

Qualificações

• Degree in Computer Science or a similar field.
• At least 5 years of experience in Java development.
• Advanced knowledge of Java 8+, software architecture, design patterns, SQL/NoSQL databases, and Spring.
• Experience with Web Services, including XML/REST.
• EMS/JMS is preferred.
• Experience with asynchronous messaging technologies such as Apache Pulsar.
• Knowledge of application security practices, including OAuth2, JWT, OpenID, and JWS.
• Knowledge of eCommerce and digital payment solutions.
• Strong problem-solving skills and the ability to work autonomously on complex technical challenges.
• Excellent communication skills and the ability to collaborate effectively with cross-functional teams.

Responsabilidades

• Analyze, develop, and maintain Java applications using best practices and scalable, high-availability, microservices-based architectures;
• Optimize application performance, including concurrency and SQL queries;
• Conduct code reviews to ensure software quality;
• Ensure the security and compliance of developed solutions;
• Collaborate with functional, technical, and testing teams;
• Analyze and resolve complex problems through advanced debugging and log analysis;
• Participate in technical decision‑making regarding technologies, architecture, frameworks, and tools.

Conhecimentos

Java development

Java 8+

Spring framework

Architecture & design patterns

SQL/NoSQL databases

Web Services (XML/REST)

Asynchronous messaging (Apache Pulsar)

OAuth2/JWT/OpenID/JWS security

Problem solving

Autonomy

Communication & collaboration

Formação académica

Degree in Computer Science or similar

Ferramentas

EMS/JMS

Descrição da oferta de emprego

Noesis in Lisbon, Portugal is seeking an experienced Java developer to design, build, and maintain high-availability microservices using Spring, Java 8+, and modern architectural patterns. You will optimize concurrency and SQL/NoSQL performance, conduct code reviews, ensure security and compliance, and collaborate with cross-functional teams across product, technical, and testing units.

The role requires strong problem-solving abilities, autonomy on complex challenges, and excellent