Senior Network Engineer

CriticalRiver Inc.; San Francisco (CA); On-site; USD 120,000 - 180,000; Full time

Job summary

CriticalRiver Inc. in San Francisco, CA is seeking an experienced Network Engineer to design, deploy, and support wired and wireless infrastructure for our rapidly growing offices.

This 12-month, onsite role covers current and new locations including San Francisco, Austin, New York, and Washington, D.C., with five days on-site per week. The candidate will lead network deployments end-to-end, perform wireless surveys and capacity planning, and configure routing, switching, DNS/DHCP/VPN, and

Qualifications

• Strong enterprise wired and wireless networking experience.
• Experience designing and delivering multi-office network environments.
• Hands-on knowledge of routing, switching, VLANs, DNS, DHCP, VPNs, and firewalls.
• Experience with wireless surveys and interference troubleshooting.
• Ability to lead an office-network deployment from design through handoff.
• Strong documentation, vendor-management, and communication skills.

Responsibilities

• Design wired and wireless networks for new and existing office locations.
• Conduct wireless surveys, capacity planning, and coverage analysis.
• Configure switches, access points, firewalls, VLANs, DHCP, DNS, and VPN services.
• Troubleshoot connectivity, performance, roaming, segmentation, and reliability issues.
• Create repeatable network standards for office deployments.
• Coordinate with facilities, vendors, security, and internal IT teams.
• Implement monitoring, alerting, configuration backup, diagrams, and runbooks.

Skills

Wired networking

Wireless networking

Routing & Switching

DNS/DHCP/VPN

Wireless surveys

Office network deployments

Documentation & vendor management

Communication

Tools

Python

APIs

Terraform

Ansible

Job description

Location: San Francisco, CA Alternate Locations: Austin, TX| New York, NY| Washington, DC| 5 Days Onsite

Duration: 12 Months

Position Summary

Design, deploy, stabilize, and support reliable wired and wireless infrastructure for current and new offices in a rapidly scaling organization.

Key Responsibilities

• Design wired and wireless networks for new and existing office locations.
• Conduct wireless surveys, capacity planning, and coverage analysis.
• Configure switches, access points, firewalls, VLANs, DHCP, DNS, and VPN services.
• Troubleshoot connectivity, performance, roaming, segmentation, and reliability issues.
• Create repeatable network standards for office deployments.
• Coordinate with facilities, vendors, security, and internal IT teams.
• Implement monitoring, alerting, configuration backup, diagrams, and operational runbooks.

Required Qualifications

• Strong enterprise wired and wireless networking experience.
• Experience designing and delivering multi-office network environments.
• Hands-on knowledge of routing, switching, VLANs, DNS, DHCP, VPNs, and firewalls.
• Experience with wireless surveys and interference troubleshooting.
• Ability to lead an office-network deployment from design through handoff.
• Strong documentation, vendor-management, and communication skills.

Preferred Qualifications

• Experience supporting hyper-growth technology companies.
• Cloud-managed enterprise networking platforms.
• Network automation using Python, APIs, Terraform, or Ansible.
• NAC, identity-aware networking, or zero-trust access.
• Excellent written and verbal communication.
• Ownership and self-starter mentality.
• Curiosity and first-principles problem-solving.
• Ability to work effectively within a lean internal team.
• Respect for least-privilege access and controlled delivery.
• Interest in AI-native tools and measurable operational outcomes.