Senior Java Engineer - Cloud-Native Backend Development 100% (f/m/d) - (Contract through our external payroll partner with immediate start for 12 months with possible extension)
On-site · Zürich, Zurich, Switzerland
Job Summary
Lead the design and development of a cloud-native Java backend system; drive re-architecture of a large-scale legacy application using modern Java technologies; build scalable and resilient backend services with Spring Boot; develop and deploy high-throughput distributed systems in a cloud environment; apply AI-assisted development tools to accelerate delivery while maintaining code quality; serve as a technical leader in a modernization initiative with ownership of enterprise-grade Java backend development; optimize performance in complex, high-demand environments; collaborate within a transformation program with cross-functional teams.
Required Qualifications
- 8+ years’ experience in developing server-side Java applications
- Proficiency in Java 21+ and Spring ecosystem (Spring Boot, Spring Data, Spring Security, Spring Cloud)
- Experience with high throughput and low latency designs, asynchronous processing and message brokers (Kafka, RabbitMQ)
- Hands-on experience building and operating cloud-native microservices on AWS, Azure, or GCP, including containers (Docker), orchestration (Kubernetes), service mesh, and cloud storage/services
- Observability instrumentation using Micrometer and OpenTelemetry (metrics, tracing, logging)
- Experience refactoring or migrating monolithic systems to microservice architectures
- Familiarity with AI-assisted development workflows and integrating generative AI tools into IDEs and code reviews
- Ability to work autonomously in a global team and deliver in agile environments
- Strong verbal and written English communication skills
- Ability to take initiative in fast-paced, high-pressure settings
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