Software Engineer, Storage Systems (Agent Infra)

Job summary

Responsibilities

Storage decides how fast agent sandboxes start and how safely they share data. Agents need a filesystem that thousands of sandboxes mount at the same time, with strict isolation and the consistency agents need.

• Design and implement core Agent Drive features: metadata replication, volume placement, garbage collection, and FUSE client behavior
• Solve multi-attach correctness: cache coherency across many FUSE mounts of the same drive, dentry and inode invalidation, write ordering, and crash consistency
• Optimize tail latency on read and write paths, including page cache strategy, writeback, prefetch, and metadata RPC batching
• Build tenant isolation into the storage layer, including quota enforcement, blast-radius containment, and noisy-neighbor mitigation
• Own the storage side of sandbox startup and resume performance

What they're looking for

• Strong systems programming background in Go, Rust, and/or C/C++, with comfort reading kernel code
• Deep understanding of Linux filesystem and storage internals: VFS, page cache, dentry and inode caches, FUSE, the block I/O stack, fsync semantics, and crash consistency
• Hands-on experience building distributed storage systems, content-addressable storage, or large-scale caching infrastructure
• Experience profiling I/O, memory, and RPC bottlenecks and optimizing tail latency in production
• Ability to debug correctness bugs that only show up under concurrency or partial failure

Tech stack

• Spark
• Go
• Rust
• C++