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# Senior Fullstack Engineer - Data Intelligence

- **Company:** HiveMQ GmbH
- **Location:** Berlin, Germany (Remote available)
- **Experience:** Expert
- **Salary:** €58,000.0 - €110,000.0
- **Contract:** Permanent contract
- **Skills:** A/B Testing, Amazon Web Services, Cloud Computing, Cross-Origin Resource Sharing (Ajax Programming), Github, Data Intelligence, Java Virtual Machine (JVM), Mixpanel, Software Engineering, Openapi, Usage Analysis, Network Routers, ReactJS, Event Driven Architecture
- **Published:** May 15, 2026
- **Apply:** https://de.indeed.com/viewjob?jk=242bbf973d13dae3

## About the Role

Do you have experience in gRPC?, * 3+ years of software engineering experience

 * Experience with event-driven architectures and resilient inter-service communication (JVM experience is a plus)
 * Deep knowledge of React and reactive state management, ideally including the TanStack ecosystem (Router, Query, Form, Table)
 * Production experience building and operating cloud-native systems, ideally on AWS
 * Strong interpersonal skills and the ability to coordinate effectively across teams, * Experience with product analytics and experimentation: defining robust KPIs in Mixpanel or GA, running A/B tests, and working with feature toggles such as LaunchDarkly
 * Familiarity with Auth0, cookie-based session handling, and CORS edge cases for cross-origin SPAs or microfrontend architectures
 * Experience with codegen-heavy build pipelines (OpenAPI, ANTLR, or similar)
 * A proven track record with CI/CD pipelines (e.g., GitHub Actions) and GitOps tooling such as ArgoCD and Helm



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