Senior Network Security Engineer

AlphaSense • New York City, NY

65d

About The Position

We're looking for a senior level, hands-on Network Security Engineer to design, deploy, and secure our global corporate network across offices in North America and EMEA/APAC. You'll be the technical authority for secure networking architecture, driving automation, and ensuring our infrastructure is resilient, scalable, and vendor-agnostic. This role will partner closely with Corporate Technology, SRE, and Security Engineering and requires the ability to travel globally for deployments.

Requirements

• 8-10+ years in enterprise networking and network security, with multi-site design and operations experience.
• Deep expertise in routing, switching, and segmentation; strong firewalling skills.
• Proven experience with Cisco networking technology, especially Cisco Meraki.
• Proficient in Python and Ansible for automation.
• Skilled in NAC/RADIUS integrations with identity providers (Okta, Azure AD).
• Strong understanding of certificate-based authentication, EAP, and zero-trust architectures.
• Strong troubleshooting, documentation, and leadership skills.
• Willing and able to travel internationally for deployments.

Nice To Haves

• Cloud networking depth (AWS, Azure, GCP).
• Experience with SASE/ZTNA platforms (Cloudflare/Zscaler).
• Professional certifications (CCNP, CCIE, JNCIP, etc.).

Responsibilities

• Architect and implement secure LAN/WAN/SD-WAN and Wi-Fi for multiple global offices.
• Manage Cisco Meraki switches/routers/firewalls and APs, while staying vendor-agnostic for future integrations.
• Deploy and manage network security controls including segmentation, NAC/802.1X, VPN, SWG/SASE, ZTNA, IDS/IPS, and DLP.
• Implement and manage Wi-Fi EAP (Enterprise Authentication), certificate-based authentication, and enforce zero-trust access controls.
• Plan and optimize enterprise Wi-Fi, including RF design, surveys, and performance tuning.
• Build secure cloud and hybrid networking (AWS, Azure, GCP).
• Automate deployments and configuration management with Python, Ansible, and IaC tools (Terraform, GitOps).
• Implement observability and alerting; drive improvements in MTTR and service reliability.
• Support compliance (SOC 2, ISO 27001) with secure configs, change control, and documentation.
• Travel globally (approx. 25-40% during buildouts) for on-site deployments and architecture reviews.

Benefits

• Competitive compensation, benefits, and career growth opportunities.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Industry: Web Search Portals, Libraries, Archives, and Other Information Services
• Number of Employees: 1,001-5,000 employees