Senior Software Engineer - Stream Storage (Apache Fluss), Amsterdam

About the Role We are building the next generation of stream-native storage systems centered around table semantics— not just logs. Our Stream Storage team develops high-performance distributed systems that power real-time analytics, streaming pipelines, and transactional workloads.

As a Senior Software Engineer, you will contribute to core stream storage infrastructure, Apache Fluss (open-source), and internal production-grade systems built on Fluss.

This role sits at the intersection of distributed systems, storage engines, streaming systems, and database internals.

What You’ll Do Core Engineering

Design and implement distributed storage components for streaming tables

Work on table lifecycle: schema evolution, ingestion, compaction, retention, indexing

Enhance the Fluss Lakehouse ecosystem support

Contribute features and fixes to the Apache Fluss OSS project

Participate in design discussions and Fluss Improvement Proposals (FIPs)

Improve Fluss table engine performance and reliability

Enhance integration with streaming engines (e.g., Flink)

Engage with the open-source community via PR reviews and discussions

Internal Platform Development

Build internal tooling and services on top of Fluss

Improve observability (metrics, logging, failure diagnostics)

Optimize production deployments

Contribute to benchmarking and testing frameworks

What We’re Looking For Required Experience

5+ years building distributed systems or storage systems

Strong experience in Java, Go, Rust, or similar systems languages

Good understanding of:

Consensus and replication (Raft, Paxos, etc.)

Storage engines (LSM trees, B-Trees, WAL, compaction)

Streaming systems (Kafka, Pulsar, Flink, etc.)

Transactional systems and consistency models

Experience debugging production distributed systems

Strongly Preferred

Experience with database internals or stream processing engines

Familiarity with table formats (Iceberg, Hudi, Delta, etc.)

Contributions to open-source projects (better if ASF)

Experience with Flink or streaming SQL engines

Why Join Us

Work on table-first stream storage, not just message logs

Direct impact on Apache Fluss open-source evolution

Solve complex consistency and performance trade-offs

Influence architectural decisions in a fast-moving space

Collaborate with engineers passionate about distributed systems

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