Senior Software Engineer, Distributed Databases

Source-code level experience contributing to a distributed database or distributed storage system.

Examples include distributed SQL databases (CockroachDB, TiDB / TiKV, YugabyteDB, Spanner), Raft-based or Paxos-based storage systems (etcd, FoundationDB), wide-column stores (Cassandra, ScyllaDB), document databases (MongoDB), or comparable systems

Deep understanding of distributed systems concepts: consensus protocols (Raft or Paxos), data replication, MVCC, transaction isolation levels, fault tolerance, and partition tolerance

Familiarity with LSM-tree storage engines (RocksDB, LevelDB, Pebble, SlateDB) or comparable storage internals

Familiarity with storage fundamentals: block devices, filesystems, SSD characteristics

Experience building and maintaining high-throughput, low-latency systems

In this role, you will own the distributed database systems that run across Cloudflare's edge network and power services such as R2, Durable Objects, and Workers KV.

We expect you to go a layer deeper than a database operator to fix the underlying problems.

You will own your code from inception through production rollout.

Add new features and extensions to the database to meet the needs of R2, Durable Objects, and Workers KV

Hold the bar on correctness through code review, testing, and staged rollout so defects are caught before customer impact

Tune performance and resource utilization across staged rollouts and production

ETI's Storage Infrastructure team is responsible for the core storage layer that underpins many of ETI's stateful services. Our scope ranges from managing the physical hardware to operating the distributed databases and storage systems built upon it. We run this infrastructure globally across Cloudflare's network, which presents unique and complex engineering puzzles. We navigate efficiently expanding storage capacity, optimizing rebuild operations, and coordinating operations across failure domains to uphold durability. While other service teams focus on product development, our mission is to ensure the underlying storage is reliable, fast, and scalable.

You'll be joining a highly motivated team that is building the next generation of Cloudflare’s distributed storage services.

Emerging Technologies & Incubation (ETI) is where new and bold products are built and released within Cloudflare. Rather than being constrained by the structures which make Cloudflare a massively successful business, we are able to leverage them to deliver entirely new tools and products to our customers. Cloudflare’s edge and network make it possible to solve problems at massive scale and efficiency which would be impossible for almost any other organization.