Java developer for payment applications

Описание:

Join Hexa as a Senior Java Spring Boot Developer and contribute to the development of secure, scalable backend solutions for the banking sector. You will work within an international engineering environment, supporting payment-related applications and collaborating with multidisciplinary teams.

Задачи:

• Develop and maintain Java-based microservices and APIs supporting financial transactions and business operations.
• Design reliable backend components with a focus on maintainability, scalability, security and performance.
• Translate functional and technical requirements into sustainable software solutions in collaboration with engineering and business teams.
• Implement secure communication mechanisms between distributed services and external systems.
• Improve application reliability through testing, debugging, performance analysis and code reviews.
• Contribute to the standardization of development practices, architecture patterns and software quality.
• Support the optimization of automated integration, testing and deployment processes.
• Collaborate with international teams in an Agile development environment.

Требования:

• 6 to 9 years of professional experience in Java development, particularly in backend and microservices environments.
• Academic background in Computer Science, Software Engineering or a related field, or equivalent professional experience.
• Proven ability to deliver complex backend solutions with technical autonomy and attention to software quality.
• Strong analytical capabilities and a structured approach to troubleshooting and problem-solving.
• Professional working proficiency in English, at B2/C1 level or equivalent, for daily international collaboration.
• Effective communication skills and a collaborative, proactive and solution-oriented working approach.
• Availability to work from the Lisbon office two days per week.
• Java 17/21 and object-oriented programming principles.
• Spring Boot 3.x, Spring MVC, Spring Security and Spring Data JPA.
• Microservices architecture, distributed systems and enterprise design patterns.
• RESTful APIs, API-first development and service integration.
• OAuth 2.0, JWT and secure API communication.
• SQL databases, including Oracle or PostgreSQL.
• Data modeling, query optimization and database performance.
• Multithreading, concurrency and application performance optimization.
• CI/CD pipelines using Jenkins, XL Deploy, XL Release or equivalent tools.
• Automated testing, code quality practices and technical debugging.
• Agile methodologies, including Scrum and Kanban, with Jira.