Description
Kontakt.io is hiring a Senior Backend Engineer to own the data ingress and egress pipelines for its real-time IoT and location platform. The role involves building Java/Spring and Kafka Streams services, integrating third-party device data, streaming enriched telemetry through REST, gRPC, and WebSocket, and driving architecture, testing, observability, and cross-team alignment. The engineer will also mentor team members and work with product, data platform, and SRE stakeholders. The position is based in Kraków, Poland, with a hybrid arrangement requiring at least two days in the office.
