Senior Software Engineer, Distributed Databases

Stack

Responsibilities

• ▹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
• ▹Optimize data placement and replication for the edge topology, and partner with service teams on schema design and query performance
• ▹Build the observability and tooling that make the database supportable across its consumers

Requirements

• ▹Source-code level experience contributing to a distributed database or distributed storage system (e.g. CockroachDB, TiDB/TiKV, YugabyteDB, Spanner, etcd, FoundationDB, Cassandra, ScyllaDB, MongoDB, or comparable)
• ▹Strong programming skills in Go, Rust, C++, or another systems language, with a willingness to be productive in Go for this role
• ▹Deep understanding of distributed systems concepts: consensus protocols (Raft or Paxos), data replication, MVCC, transaction isolation levels, fault tolerance, and partition tolerance
• ▹Experience reading, debugging, and modifying complex codebases under correctness constraints (concurrency, durability, consistency)
• ▹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
• ▹Understanding of network fundamentals as they relate to distributed storage: bandwidth constraints, latency tradeoffs, cross-datacenter replication
• ▹Experience with infrastructure configuration tooling and infrastructure as code
• ▹Experience with monitoring tools (Prometheus, Grafana) and analytics tools (Clickhouse) for operating production database systems
• ▹Strong written and verbal communication skills and ability to explain technical decisions clearly
• ▹Comfortable operating in fast-paced environments with tight deadlines and evolving priorities

Soft skills

What we offer

• ▹Medical/Rx insurance, dental insurance, vision insurance
• ▹Flexible spending accounts
• ▹Commuter spending accounts
• ▹Fertility & family forming benefits
• ▹On-demand mental health support and Employee Assistance Program
• ▹Global travel medical insurance
• ▹Short and long term disability insurance
• ▹Life & accident insurance
• ▹401(k) retirement savings plan
• ▹Employee stock participation plan
• ▹Flexible paid time off covering vacation and sick leave
• ▹Leave programs, including parental, pregnancy health, medical, and bereavement leave
• ▹Eligibility to participate in Cloudflare's equity plan

About the company

Cloudflare's mission is to help build a better Internet. It runs one of the world's largest networks, powering millions of websites and Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare has been named to Entrepreneur Magazine's Top Company Cultures list and ranked among Fast Company's World's Most Innovative Companies.