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DoorDash USA

Software Engineer, Storage - Distributed Caching

San Francisco, CA; Seattle, WA; New York, NYFrom $235kmidAdded today

About this role

Design and operate distributed caching systems at massive scale, including Redis/Valkey clusters, KVRocks-based key-value stores, and lock services that handle hundreds of millions of requests per second across DoorDash, Wolt, and Deliveroo. You'll evolve these systems for cost efficiency and performance while building self-serve tooling and smart client libraries that abstract complexity for internal teams.

What you'll do

  • Own provisioning and evolution of caching backends (ElastiCache, Boulder, Entity Cache) serving billions of operations daily
  • Design and implement sharding, compaction, replication, and failover mechanisms for distributed caching infrastructure
  • Re-platform Distributed Lock Service onto a strongly consistent backend with sharding and failover
  • Build self-serve recommendation engines that match customer workloads to optimal caching backends
  • Diagnose and resolve production issues (invalidation storms, replication lag, hot shards) and convert them into durable guardrails
  • Develop standardized smart client libraries that embed failover, retry, and observability for internal consumers

What they're looking for

  • Go or Java/Kotlin with deep expertise in concurrency and distributed systems
  • Hands-on experience with Redis, Valkey, Memcached, or similar caching technologies
  • Distributed systems fundamentals: consistency models, sharding, replication, consensus
  • KVRocks, RocksDB, or similar embedded storage engine tuning and operation
  • Capacity planning and cost optimization at scale
  • Kubernetes and cloud infrastructure operations
  • Proficiency with AI coding tools (Claude Code, Codex, Cursor)
  • Production debugging and observability tool expertise
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DoorDash USA

DoorDash USA is building autonomous delivery systems including drones and robots, along with internal infrastructure platforms to support large-scale operations. The company is hiring robotics engineers, autonomous systems specialists, infrastructure engineers, and platform software engineers to develop flight control systems, mapping and localization capabilities, and distributed computing platforms.

View all jobs at DoorDash USA

Likely interview questions

  • Walk us through a time you diagnosed and resolved a critical production issue in a distributed caching or storage system—what was the root cause and how did you prevent it long-term?
  • Describe your experience tuning compaction and back-pressure handling in RocksDB or KVRocks-family engines. What trade-offs did you navigate?
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