Principal Software Engineer - Roblox Database San Mateo, CA, United States Engineering

Roblox Corporation; San Mateo, Northern (CA, KY); Hybrid; USD 345,000 - 399,000; Full time

Benefits offered by this job

Onsite office

Equal opportunity employer

Job summary

Roblox Corporation seeks a Principal Software Engineer for the Roblox Database team to lead architecture and deliver highly scalable data platforms. You will shape features, improve latency, and ensure reliability across global regions.

The role requires deep database internals knowledge, experience with distributed systems, and mentoring across teams. You will collaborate with storage, platform, and product teams while engaging with open-source communities.

Qualifications

• Experience building large-scale distributed databases or storage engines.
• 12+ years in software engineering or a related field.
• Strong knowledge of database internals (B-trees, MVCC, WAL, query optimization).
• Proficiency in C/C++, Go or Rust.
• Experience with consensus algorithms (Raft, Paxos) and multi-region replication.
• Shipping high-QPS, low-latency services on Kubernetes or Nomad with observability.
• Ability to translate ambiguous requirements into a clear technical roadmap.

Responsibilities

• Design and implement new engine features—indexing, storage formats, WAL and replication protocols.
• Evolve the control plane for elastic scaling, autonomous healing, and zero-downtime schema moves.
• Profile and optimize critical code paths with advanced performance tooling.
• Establish engineering best practices through design reviews and incident retrospectives.
• Automate testing, CI/CD, rollout safety, observability, and autoscaling.
• Mentor and unblock engineers across Storage, Platform, and product teams.
• Engage with the open-source community—upstreaming patches and sharing learnings.

Skills

Large-scale distributed databases

Multi-region replication

Kubernetes

Performance optimization

Mentoring

Tools

PostgreSQL

RocksDB

Nomad

Job description

Principal Software Engineer - Roblox Database

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created 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 that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

Roblox’s database team develops the next-generation, multi-tenant database platform that elastically scales and underpins every online data workload at Roblox. As a principal engineer on the database team, you will shape the architecture, build and launch critical database capabilities that keep our services fast, reliable and efficient at global scale. You will report to the Technical Director for Storage.

You will:

• Design and implement new engine features—indexing, storage formats, WAL and replication protocols, sharding, and query-planner enhancements that push latency, throughput, and availability boundaries.
• Evolve the control plane to deliver elastic scaling, autonomous healing, and zero-downtime schema or tenant moves across global regions.
• Profile and optimize critical code paths using kernel-level tracing and advanced performance tooling; drive systematic tail-latency reductions.
• Establish engineering best practices by leading design reviews, performance benchmarks, failure drills, and post-incident retrospectives.
• Automate everything: develop frameworks for testing, CI/CD, rollout safety, observability, and autoscaling so that the platform operates hands-off at scale.
• Mentor and unblock engineers, fostering deep database craftsmanship and disseminating knowledge across Storage, Platform, and product teams.
• Engage with the open-source community—upstreaming patches, presenting learnings, and influencing the future of Postgres, RocksDB and related ecosystems.

You have:

• 12+ years of experience in software engineering or a relevant field
• Deep experience with building and operating large-scale distributed databases or storage engines (e.g., PostgreSQL, MySQL/InnoDB, RocksDB, Spanner, Aurora, AlloyDB).
• Deep expertise in database internals—B-trees, MVCC, WAL, query optimization, buffer management—and strong skills in C/C++, GO or Rust.
• Hands-on experience with consensus algorithms (Raft, Paxos) and multi-region replication models that deliver strong consistency and high availability.
• Proven success shipping high-QPS, low-latency services on container orchestration stacks (Kubernetes or Nomad) with comprehensive observability.
• Ability to turn ambiguous product requirements into a clear technical roadmap and influence cross-functional stakeholders.
• Passion for automation, rigorous testing, and data-driven decision-making that raises the reliability and efficiency bar.
• Bonus: upstream contributions to PostgreSQL, RocksDB or other OSS databases; familiarity with disaggregated storage, HTAP workloads, or custom query languages.

Annual Salary Range

$345,040 — $399,420 USD

Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).

Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process.

For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.