Principal Backend Software Engineer - Account Authentication

WHY SAFETY?

At Roblox, we strive to connect a billion people with optimism and civility, and the Safety organization's mission is to become the leader in civil immersive online communities. We systematically detect, remove, and prevent problematic content and behavior, and we make Roblox accounts secure and free from compromise. We cover a broad area of the tech spectrum, including machine learning, classifiers for 3D models, experimentation, automation, detection workflows, and AI-powered text filters. Aligned and partnering with product teams, we use this toolbelt to discover new opportunities, influence and shape the product roadmap and prioritization, build safety products, and measure the impact on our community of users and developers. In doing so, we keep Roblox safe, civil, and inclusive, and we foster positive relationships between people around the world.

WHY ACCOUNT AUTHENTICATION:

Safety and Civility is Roblox’s #1 priority and our mission is to protect our community. You will provide technical leadership to 4-6 engineers working cross organizationally on the design, implementation and maintenance of services critical to Roblox user sign-up, sign-in, token authentication, and logout. We work at large scale maintaining and extending critical infrastructure supporting 3M+ (and growing) qps.

Key challenges include:

Large-scale: 3M+ qps and growing, we are targeting managing authentication for 1B+ users for the near to immediate future.

The work is deep: Roblox users skew young, they are vulnerable, security is paramount. Our task is to make authentication at Roblox child safe.

We are problem oriented: we are using several tools to solve our problems, including Cryptography and ML.

As an Account Auth team, we act as the gateway to the metaverse. When we do our job well, Roblox users will have a seamless experience regardless of whether they are using a PC, Android phone, or iOS tablet. Upon joining Roblox, you will report to the Senior Manager of the Account Authentication team and will be based in our San Mateo HQ in a hybrid working model. #LI-Hybrid

You Will:

• Chart the future direction of our backend efforts. We are presently considering the future direction of our backend infrastructure. We want to move away from C#. We want to migrate to a new persistence layers. New models of piping data through our systems. As the lead of our team's backend reliability and scalability efforts, we would look to you to provide structure and rigor to those conversations.
• Oversee the creation, monitoring and communication of our team's production SLO's.
• Build critical infrastructure and features to ensure that user authentication is seamless, secure, and reliable.
• Work cross organizationally. We collaborate with teams and roles throughout Roblox and get a big picture view of how Roblox works.
• Learn new skills. We are using ML and Cryptography to make account authentication better.

You Have:

• 8+ years of experience in software development.
• 5+ years of experience working on Account Authentication features and protocols.
• Led technical efforts landing and maintaining large-scale, high availability systems.
• Worked cross organizationally to land a project.
• Familiarity with C#. Go, or Rust.
• BA/BS in Computer Science, Applied Math, Physics, Engineering, Statistics, or other technical fields is ideal.
• Previous experience with: GRPC, Protobuf, React, CockroachDb, Kafka, Nomad, Consul, and Vault.

You Are:

• Team Oriented: You lift up your peers and find ways to make the team stronger.
• Proactive: You can speak in detail about problems that you identified and solutions that you drove to launch.
• Conscientious: You make sure that all the little things get done before you push code to production. You don't consider a project done if it doesn't have tests, dashboards, playbooks, communications to partner teams, and alerts.
• Passionate about preserving user trust and safety.