Network Security Engineer, Senior

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Job ID 2026-5090

Sentinel Technologies is searching for a passionate and experienced Senior Network Security Engineer who thrives in a fast-paced, solutions-driven environment. As a Senior Network Security Engineer you will design, implement, and configure secure network solutions for mid-to-enterprise-level clients using cutting-edge technologies. Your commitment to customer satisfaction and highly available and secure solutions will position you for success. Sentinel a growing MSP recognized by industry leaders across the country. Sentinel excels with the ability to support our teams professionally across ourorganization to be successful and at the forefront of technologies. This is a full-time position that can work remote when not needed at client locations reporting to our corporate headquarters in Downers Grove, Illinois.

What Youll Do:

• Design, implement, and support secure network solutions for a variety of client environments.
• Work hands-on with Cisco routers and switches to optimize and secure network infrastructure.
• Deploy and manage Cisco, Palo Alto, and Fortinet firewall solutions.
• Architect and implement large-scale network security solutions (3+ years of experience required).
• Configure and maintain Cisco Security products such as ISE, FDT, FMC, AMP, and Umbrella.
• Perform migrations and upgrades across various network and security platforms.
• Implement wireless networks using Cisco Wireless LAN controllers in both centralized and converged access deployments.
• Work with Cisco ACI and SD-WAN (experience in these areas is a plus).
• Provide exceptional customer support and act as a trusted advisor to clients.

Qualifications

8+ years of experience working with Cisco, Palo Alto, and/or Fortinet solutions

Hands-on experience with Cisco routers and switches is required

5+ years of experience designing and implementing large scale network security solutions

CCNP Certification or equivalent manufacture certification or higher is preferred

Experience with Cisco Security products such as FDT, FMC, AMP, Umbrella

Experience in performing migrations and upgrades on various platforms is a plus

Familiar implementing wireless networks with Cisco wireless LAN controllers using both traditional centralized deployments as well as converged access is a plus

Cisco ACI and SD WAN experience is a plus

The candidate must have a car, as this position requires travel between location and the transportation of equipment

A valid drivers license and proof of vehicle insurance will be required

**Legally authorized to work in the US without spo **