Java Software Engineer with Quarkus & Dapr

The project is in the active development and expansion phase of the platform - new services are being created and existing components are being developed. The role has a real impact on architectural decisions, technical standards and how services communicate. Quarkus and Dapr are key technologies used in the team's daily work.

Your tasks

• Designing and implementing backend microservices in Java using Quarkus
• Application of 12-Factor App principles in service design and maintenance
• Implementation of synchronous and asynchronous communication between services (REST, gRPC, events, pub/sub)
• Building cloud-native services using Dapr and its building blocks (service invocation, pub/sub, state stores, bindings, secrets, workflows)
• Defining and maintaining Dapr component configurations for various backends (e.g. messaging systems, data stores)
• Implementing service resiliency and stability mechanisms (retry, timeouts, circuit breakers, idempotency)
• Collaborate on the creation and maintenance of CI/CD pipelines (build, testing, security scans, deployment)
• Create and maintain unit, integration and contract tests
• Deploying and operating services on container orchestration platforms (Kubernetes)
• Ensuring observability of systems (structured logs, metrics, distributed tracing, OpenTelemetry)
• Participate in code review, design sessions and production troubleshooting
• Responsibility for services throughout the lifecycle

• Minimum 5 years of experience as a Software Engineer with very good knowledge of Java (11+)
• Hands-on work with Quarkus in a production environment or in complex projects
• Previous work with Dapr (sidecar model, service invocation and at least one area: pub/sub, state store, bindings, workflows)
• Good knowledge of microservices architecture and 12-Factor App principles
• Designing and consuming REST-based APIs
• Experience working with Docker and deploying applications on Kubernetes or similar platforms
• Ability to collaborate in agile teams and good technical communication skills
• Very good knowledge of English (C1)
• Residence in Poland required and fluency in the Polish language

Nice to have

• Previous work with event streaming or messaging platforms (Kafka, RabbitMQ, Azure Service Bus, Event Hubs)
• Familiarity with observability tools
• Tangibility with Gateway API or service mesh
• Experience working with Infrastructure as Code
• Familiarity with SAP Integration Suite