Principal Backbone & Edge Network Engineer - Roblox

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect within 3D immersive digital experiences. Roblox's mission is to connect a billion people with optimism and civility across any device worldwide.

As a Principal Network Engineer, you will work cross-functionally to plan, architect, and scale Roblox’s global production network to support rapid user growth. Stationed at our headquarters in San Mateo, CA, you will be responsible for the end-to-end engineering and architectural vision of Roblox's Backbone and Edge networks. You will validate next-generation networking technologies, optimize global routing, collaborate with tooling teams to automate network operations, and ensure a low-latency experience for millions of concurrent users globally.

Key Responsibilities

• Backbone & Edge Architecture: Serve as the Principal Engineer driving the overall design, expansion, and operational framework for Roblox’s global backbone and edge infrastructure.
• Technology Qualification: Lead the evaluation, hardware qualification, and deployment of next-generation networking gear and protocols, ensuring new tech is deployable and operable at scale.
• Automation & Telemetry: Partner with Network Tooling teams to automate routing workflows, enhance telemetry collection, expand observability frameworks, and refine alerting thresholds.
• Network Performance & Routing: Optimize global traffic engineering, routing policies, and peering strategies across multi-vendor environments.
• Operations & On-Call: Participate in a 24/7 escalation on-call rotation to maintain the availability and health of Roblox's global network footprint.

Requirements

Academic & Years of Experience

• 8+ years of experience designing, deploying, and operating large-scale production networks.
• 5+ years of specific experience architecting and managing high-capacity Backbone and Edge networks.

Technical Competencies & Protocols

• Advanced expertise configuring and troubleshooting core routing and switching protocols (BGP, IS-IS, MPLS, RSVP-TE).
• Deep working knowledge of fundamental network protocols (TCP/UDP, DHCP, DNS) and comprehensive deployment experience with IPv4 and IPv6.
• Proven hands-on experience in multi-vendor hardware environments (e.g., Arista, Juniper, Cisco).
• Proven ability to lead cross-functional infrastructure initiatives across software, operations, and data center engineering teams.

Preferred Qualifications

• Experience programming in languages such as Python, Go, or C/C++ for network automation, API integrations, and script development.
• Background in automated network testing, software-defined networking (SDN), or streaming telemetry architectures.

Work Logistics & Visa Sponsorship Notice

• Workplace Model: Hybrid model requiring in-office presence at San Mateo HQ on Tuesdays, Wednesdays, and Thursdays (Mondays/Fridays optional).
• Visa Sponsorship Note: Roblox currently may not be able to support future H-1B sponsorship or candidates holding certain U.S. visa categories for this specific role.