Staff Software Engineer @ Kontakt.io

What we are looking for: 7 years of backend software engineering, with strong production Java experience — Spring Boot and ideally Kotlin too Deep, hands-on Apache Kafka knowledge: Streams, state stores, topology design, and operational behavior — not just produce/consume Experience building real-time, event-driven distributed systems in multi-tenant SaaS environments Solid database fluency: MongoDB, PostgreSQL, Redis — you know when to use what and why Hands-on AWS experience: EKS, Kinesis, S3…