Java Developer

About Sii Sii is an international technology consultancy with 8,000+ engineers across Europe. In Sweden, we offer long-term assignments with well-known clients, clear onboarding, and ongoing support from a local team. You’ll work in stable, collaborative environments and have access to a wider expert community for learning and technical sparring. About the client Our client is a global technology company operating in the security and digital solutions domain. They build large-scale, mission-critical systems used internationally, with a strong focus on reliability, scalability, and modern cloud-native architecture. The environment is international, English-speaking, and engineering-driven, with experienced teams working on complex distributed systems. About the role We are currently looking for an experienced Java Developer to join a system-oriented team working on modern, cloud-native applications. The role focuses on backend development in a microservices architecture, with strong exposure to distributed systems, messaging, and containerized deployments. You will work closely with other engineers, contributing to the development and evolution of multi-service platforms running in the cloud. The role is hands-on and suited for developers who enjoy understanding how systems behave in production, not just writing code. Responsibilities • Develop and maintain backend services using Java and Spring Boot • Design and work with microservices and distributed systems • Participate in design discussions and technical decision-making • Collaborate closely with cross-functional, international teams • Contribute to system stability, scalability, and maintainability Required experience • Strong experience in Java backend development (Spring Boot) • Experience with microservices and distributed systems • Good understanding of RESTful APIs and messaging patterns • Hands-on experience with containers (Docker; Kubernetes is a plus) • Experience working with cloud platforms (AWS and/or Azure) • Familiarity with CI/CD pipelines and production environments • Ability to work independently and take ownership of solutions