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Java Backend Engineer - (Spring Boot) [gn]
Location:
Remote (within Germany)
Language:
English (fluent)
Team:
3- Project development
Entry Level :
Mid (+2 years)
Employment :
40h (Fulltime)
Available:
Immediately
Summary
As a Java Backend Engineer at LUMASERV, you'll play a key role in developing and maintaining customer projects that serve millions of users daily. You'll work closely with our product managers, developers, and architects to build robust, scalable backend solutions using modern Java frameworks, particularly Spring Boot. If you appreciate clean code, domain-driven design, and the elegance that Spring Boot brings to application development, this position offers you the opportunity to shape the technical direction of projects while writing high-quality code every day.
Description
You implement backend solutions using modern web frameworks, primarily Spring Boot
You design and develop RESTful APIs that integrate seamlessly with frontend applications and external systems
You write and maintain comprehensive automated software tests to ensure code quality and reliability
You collaborate with frontend developers to design efficient API contracts and data structures
You perform regular code reviews and help establish best practices within the team
You implement security best practices and prevent common vulnerabilities
You work with databases (MySQL, MariaDB, Redis) to design efficient data models and queries
You participate in technical planning sessions and contribute to architectural decisions
Qualifications
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
Desired Qualifications
Experience with domain-driven design and software architecture
Knowledge of CI/CD processes and DevOps practices
Familiarity with Docker / Kubernetes
Experience with message queues and asynchronous processing
Contributions to open-source projects or active participation in the developer community
