Java Developer (Spring Boot) [gn]

About the Company

At LUMASERV, we work on high-impact cloud and infrastructure projects - from high-availability platforms for public administrations to scalable solutions for education and research. We develop and operate systems that millions of users rely on every day - secure, compliant with data protection regulations, and meeting European standards.

Responsibilities

• Implement backend solutions using modern web frameworks, primarily Spring Boot
• Design and develop RESTful APIs that integrate seamlessly with frontend applications and external systems
• Write and maintain comprehensive automated software tests to ensure code quality and reliability
• Collaborate with frontend developers to design efficient API contracts and data structures
• Perform regular code reviews and help establish best practices within the team
• Implement security best practices and prevent common vulnerabilities
• Work with databases (MySQL, MariaDB, Redis) to design efficient data models and queries
• Participate in technical planning sessions and contribute to architectural decisions

Requirements

• Extensive professional experience in Java backend development
• Strong expertise with Spring Boot (or similar modern frameworks like Quarkus, Micronaut)
• Solid understanding of object-oriented programming, dependency injection and design patterns
• Experience with database design and optimization (MySQL, MariaDB, Redis)
• Proficiency in writing automated tests (JUnit, Mockito)
• Familiarity with HTTP REST interfaces and API documentation formats (Swagger/OpenAPI)
• Experience with agile methodologies (Kanban, SCRUM)
• Strong understanding of web security principles and common vulnerabilities

Benefits

• Short decision-making processes
• Modern technical equipment
• Freedom to contribute and implement your own ideas