Principal Software Engineer - Object Store
Roblox · San Mateo, CA, United States
About this role
## About Roblox Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences—built by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. A career at Roblox means shaping the future of human interaction, solving unique technical challenges at scale, and helping create safer, more civil shared experiences for everyone. --- ## Role: Principal Software Engineer — Object Store Roblox’s Object Store team builds the in-house, multi-tenant object storage platform that underpins every large-object workload at Roblox—assets, media, analytics, backups, and machine learning datasets—at exabyte scale, trillions of objects, and terabytes per second of throughput. You’ll shape the architecture, build and launch capabilities that keep the platform durable, fast, and efficient at global scale, and set the technical direction for what comes next. You’ll report to the Engineering Manager for Storage. --- ## You will - **Design and build the object store** — S3-compatible gateway, metadata and indexing, data placement and tiering, multi-tenancy and isolation. - **Own the technical strategy** — multi-year architecture, build-vs-buy decisions, and migration off cloud object storage. - **Evolve the control plane** — elastic scaling, autonomous healing, self-service provisioning, and zero-downtime tenant moves. - **Run the bare-metal fleet at scale** — cluster lifecycle, upgrades, rebalancing, failure domains, hardware and capacity planning. - **Profile and optimize** critical data paths; drive down tail latency and cost per byte. - **Establish engineering best practices** — design reviews, benchmarks, failure drills, post-incident retrospectives (targeting **4+ 9s**). - **Automate everything** — testing, CI/CD, rollout safety, observability, autoscaling. - **Mentor engineers and partner cross-functionally** with security, analytics, and product teams. --- ## You have - **8+ years** of experience in software engineering or a relevant field. - Deep experience building and operating **large-scale distributed storage** (object stores, blob stores, or distributed file systems) at **petabyte scale or beyond**. - Hands-on experience **running an object storage platform in production**: data placement and rebalancing, erasure coding, cluster tuning, and upgrades at scale. - Strong skills in **C++, Go, or Rust**. - Deep understanding of **durability and replication** — erasure coding, geo-replication, consistency trade-offs, blast-radius containment. - Proven success shipping **high-throughput, low-latency services on bare-metal / on-prem fleets** with strong observability. - Ability to turn ambiguous requirements into a clear roadmap and **influence cross-functional stakeholders**. - Passion for **automation, rigorous testing, and data-driven decisions**. - **Bonus:** upstream contributions to open-source storage projects; S3 API compatibility at scale; NVMe/HDD tiering; migrating large workloads off public-cloud object storage. --- ## Pay & Location - **Annual Salary Range (HQ in San Mateo, CA):** **$295,250 — $345,040 USD** - Equity compensation and benefits are also available. --- ## Work Schedule (Office-based) Roles based in an office are **
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