Stream Processing Engineer (Apache Flink Internals) - Remote Work | REF#294352

BairesDev is a leading technology solutions company delivering innovative projects globally. They are seeking a Stream Processing Engineer with expertise in Apache Flink internals to work on the Flink engine itself, focusing on runtime, scheduler, and state backend at petabyte scale.

Responsibilities:

• Contribute production-grade code to the Apache Flink project
• Debug and optimize Flink internals — runtime, scheduler, state backend, checkpointing, backpressure — at petabyte scale
• Improve performance and scalability of stateful stream processing in production environments
• Profile and tune JVM behavior (GC, memory layout, concurrency) at the engine level
• Collaborate with cross-functional engineering teams and open source committers on integrations and ecosystem work
• Mentor senior engineers and raise the engineering bar through code reviews and design critiques

Requirements:

• 6+ years of experience in software development
• Strong Java skills
• Experience with distributed systems and concurrent or parallel programming
• Working knowledge of stream processing concepts: stateful processing, event-time semantics, checkpointing, or backpressure handling
• Familiarity with JVM performance characteristics (GC, memory, threading)
• Advanced level of English
• Upstream contributions to Apache Flink (merged PRs in runtime, scheduler, state backend, or connectors); committer status is a strong plus
• Experience operating Flink at petabyte scale in production
• Exposure to the lakehouse ecosystem (Iceberg, Hive, Kafka, Hadoop)
• Kubernetes-native deployment experience
• Experience with adjacent streaming frameworks (Spark Streaming, Kafka Streams, Apache Beam)