Staff Fiber Network Engineer

Anthropic is looking for a Staff Fiber Network Engineer to build the physical layer of their private, global dark-fiber backbone, Anternet. The successful candidate will own the design, acquisition, and delivery of fiber infrastructure, including route engineering, vendor management, and field-delivery program management.

Requirements

• Experience in OSP/fiber planning or network delivery at a carrier, hyperscaler, dark-fiber provider, or large enterprise backbone
• Demonstrated experience taking long-haul or metro dark-fiber routes from design through acceptance
• Solid working knowledge of the vendor landscape
• Proficiency with GIS/KMZ tooling for route design and comfort maintaining structured inventory data
• Sufficient understanding of optical transport (DWDM, amplifier spacing, span loss, CD/PMD)
• Ability to serve as the single accountable owner for physical delivery across many concurrent builds

Benefits

• Competitive compensation
• Benefits
• Optional equity donation matching
• Generous vacation and parental leave
• Flexible working hours