Build high-throughput streaming systems as a Senior Java Engineer specializing in Apache Flink, working hybrid from downtown Toronto three days weekly. This senior backend engineering role supports the Core Data Platform team in evolving real-time data architecture. You will develop stateful pipelines with Java DataStream and Table/SQL APIs, integrate Apache Kafka or AWS Kinesis, and deliver scalable event-driven solutions. The position focuses on production stream processing, reliability, and performance. Optimize clusters, memory settings, serializers, and RocksDB performance Partner with Data Science, DevOps, and Product teams Five-plus years of qualified backend software engineering experience Two-plus years building production Apache Flink pipelines Mastery of Java 11/17+, concurrency, and memory management Understanding of event time, watermarking, windows, and late data Apply senior Java, Apache Flink, Kafka, and distributed streaming expertise to Toronto’s Core Data Platform team. #