Principal Network Engineer, Backbone/Edge Network

The available sources do not contain information about the company name for rounx.com.; Ashburn (VA); On-site; USD 266,000 - 321,000; Full time

Job summary

Roblox in Ashburn, VA is seeking a Principal Network Engineer to lead the design and architecture of Roblox’s global backbone and edge networks. You will plan, scale, and secure network infrastructure to support rapid user growth and billions of daily interactions.

You will drive deployment of large-scale network solutions, evaluate new technologies, and collaborate with tooling teams to enhance automation, telemetry, and observability.

Qualifications

• 8+ years designing, deploying, and operating large-scale networks.
• 5+ years in backbone and edge network architectures.
• Proficiency in BGP, IS-IS, MPLS, RSVP-TE.
• Experience with TCP/UDP, DHCP, DNS, IPv4/IPv6.
• Hands-on networking hardware in multi-vendor environments.
• Familiarity with Python, Go or C/C++ is a plus.
• Strong collaboration across multidisciplinary teams.

Responsibilities

• Lead design and architecture of Roblox’s global backbone and edge networks.
• Plan and scale network infrastructure to support rapid user growth.
• Drive deployment of large-scale network solutions.
• Evaluate new technologies and enhance automation, telemetry, observability.
• Participate in 24x7 on-call support for global network operations.

Skills

BGP, IS-IS, MPLS

TCP/UDP/DNS

IPv4/IPv6

Multi-vendor networks

Python/Go/C/C++

On-call support

Cross-functional teamwork

Tools

Networking hardware

Telemetry tooling

Automation tooling

Job description

We are seeking a Principal Network Engineer to lead the design and architecture of Roblox’s global backbone and edge networks. This role involves planning and scaling network infrastructure to support rapid user growth, ensuring reliable and secure connectivity for millions of users worldwide. You will drive the deployment of large-scale network solutions, evaluate new technologies, and collaborate with tooling teams to enhance automation, telemetry, and observability. You will also participate in 24x7 on-call support for global network operations.

The ideal candidate has 8+ years of experience designing, deploying, and operating large-scale networks, with 5+ years specializing in backbone and edge network architectures. Proficiency in routing protocols (BGP, IS-IS, MPLS, RSVP-TE), network protocols (TCP/UDP, DHCP, DNS), and IPv4/IPv6 is required. Experience with multi-vendor environments and hands‑on networking hardware is essential. Familiarity with Python, Go, or C/C++ is a plus. Strong collaboration skills and a proven ability to work across multidisciplinary teams are critical. The annual salary range for this position is $265,730 – $320,890 USD. Roles based in Ashburn, VA require onsite presence on Tuesdays, Wednesdays, and Thursdays.