Storage Systems Engineer - FUSE, Caching & Multi-Tenant Infra

Candidate; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Medical, dental, vision insurance (US)

Flexible PTO including Winter Break

Paid parental leave

Fertility & family-building stipend

401(k)

Learning & networking opportunities

Job summary

Baseten is building Agent Drive, a distributed filesystem powering agent sandboxes, with a focus on isolation, latency, and multi-tenant support. The role covers designing metadata replication, caching strategies, and FUSE client behavior to enable fast, reliable sandbox startups.

We value strong systems programming, deep Linux storage knowledge, and ownership on a small team. Join us to ship in weeks and drive impactful infrastructure at scale.

Qualifications

• Strong systems programming background in Go, Rust, or C/C++, with kernel-reading experience.
• Deep understanding of Linux filesystem and storage internals (VFS, page cache, dentry/inode caches, FUSE, I/O stack, 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 show up under concurrency or partial failure.
• You move fast and like owning a problem end to end on a small team.

Responsibilities

• 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, 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 and noisy-neighbor mitigation
• Own the storage side of sandbox startup and resume performance
• Build durable block storage for sandboxes alongside other Baseten storage teams
• Build observability into every layer, drive storage incidents end to end, and turn each one into a permanent fix
• Contribute upstream to the open-source storage projects we build on

Skills

Go programming

Rust

C/C++

Linux filesystem internals

Distributed storage systems

Performance profiling

Concurrency debugging

Ownership & fast execution

Tools

JuiceFS

CephFS

S3-compatible storage

Job description

Baseten is building Agent Drive, a distributed filesystem powering agent sandboxes, with a focus on isolation, latency, and multi-tenant support. The role covers designing metadata replication, caching strategies, and FUSE client behavior to enable fast, reliable sandbox startups.

We value strong systems programming, deep Linux storage knowledge, and ownership on a small team. Join us to ship in weeks and drive impactful infrastructure at scale.