Senior Optical Network Engineer II

CoreWeave is seeking a Senior Optical Network Engineer II to help design, build, operate, and evolve its global optical backbone. The successful candidate will have significant hands-on experience designing, deploying, and operating large-scale production optical networks.

Responsibilities:

• Design, engineer, and operate long-haul, metro, and data-center interconnect optical networks.
• Engineer DWDM systems across dark-fiber infrastructure.
• Design optical paths including amplification, regeneration, wavelength planning, spectrum allocation, and optical power budgets.
• Engineer and operate C-band and L-band optical systems.
• Deploy, configure, operate, and troubleshoot Nokia, Ciena, and other optical platforms.
• Commission new fiber spans, wavelengths, and optical systems.
• Perform fiber characterization and validate new dark-fiber routes before production deployment.
• Analyze span loss, connector loss, reflectance, dispersion, OSNR, Q-factor/Q-margin, BER, and other optical performance characteristics.
• Troubleshoot complex optical impairments and fiber-related issues using platform telemetry and appropriate optical test equipment.
• Design amplifier chains and understand EDFA and Raman amplification requirements.
• Engineer coherent optical transmission across metro and long-haul networks.
• Plan and execute network capacity expansions.
• Develop standards for optical network architecture, deployment, commissioning, and operations.
• Build monitoring and telemetry that identifies optical degradation before it becomes a production-impacting failure.
• Participate in incident response and root-cause analysis for optical network events.
• Work directly with dark-fiber providers, carriers, data-center operators, and equipment vendors.
• Evaluate and qualify new optical platforms, coherent optics, and photonic technologies.
• Develop automation and tooling that allows the optical network to scale without equivalent growth in manual operational work.
• Mentor other engineers and help establish the technical standards and engineering culture of a new optical networking team.

Requirements:

• Strong hands-on experience with both Ciena and Nokia optical networking platforms.
• Experience with production deployment, configuration, troubleshooting, software lifecycle, hardware troubleshooting, and operational support.
• Strong experience with dark-fiber networks, including fiber characterization and acceptance testing.
• Deep understanding of DWDM and optical transmission technologies, including coherent optical transmission and C-band and L-band systems.

Preferred Qualifications:

• Experience with IP networking, particularly large IP backbones and protocols such as BGP, IS-IS, and MPLS.
• Experience with programming languages such as Python.

What We Offer:

• Competitive salary ($165,000 to $220,000).
• Comprehensive benefits package, including medical, dental, and vision insurance, 100% paid for by CoreWeave.
• Company-paid Life Insurance.
• Voluntary supplemental life insurance.
• Short and long-term disability insurance.
• Flexible Spending Account.
• Health Savings Account.
• Tuition Reimbursement.
• Ability to Participate in Employee Stock Purchase Program (ESPP).
• Mental Wellness Benefits through Spring Health.
• Family-Forming support provided by Carrot.
• Paid Parental Leave.
• Flexible, full-service childcare support with Kinside.
• 401(k) with a generous employer match.
• Flexible PTO.
• Catered lunch each day in office and data center locations.
• Casual work environment.