> Markdown version of [/jobs/ext/1986462-network-security-engineer-senior](https://www.wearedevelopers.com/jobs/ext/1986462-network-security-engineer-senior). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Network Security Engineer, Senior

- **Company:** Sentinel Technologies Inc.
- **Location:** Downers Grove, IL, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Cisco Routers, Network Security, Cisco Nexus Switches, Wide Area Networks, Wireless Networks, Palo Alto Networks, Fortinet, Cisco
- **Published:** August 8, 2026
- **Apply:** https://us.experteer.com/career/view-jobs/network-security-engineer-senior-downers-grove-il-usa-58860627

## About the Role

Experteer Overview As a Senior Network Security Engineer at Sentinel Technologies, you design, implement, and support secure, scalable network solutions for mid-to-enterprise clients. You will work hands-on with Cisco, Palo Alto, and Fortinet technologies, and act as a trusted advisor to ensure highly available, secure networks. The role blends architecture with delivery, enabling you to shape security across client environments while collaborating with cross-functional teams. This is a customer-focused, solutions-driven opportunity at a growing MSP with strong training and certification support. Compensation / Benefits * Design, implement, and support secure network solutions for diverse client environments * Hands-on work with Cisco routers/switches to optimize and secure networks * Deploy and manage Cisco, Palo Alto, and Fortinet firewall solutions * Architect and implement large-scale network security solutions (3+ years experience) * Configure Cisco Security products (ISE, aam
_ FMC, AMP, Umbrella) * Perform migrations and upgrades across network/security platforms * Implement wireless networks with Cisco WLCs in centralized and converged deployments * Work with Cisco ACI and SD-WAN (experience a plus) * Provide exceptional customer support and act as trusted advisor to clients Tasks * 8+ years of experience with Cisco, Palo Alto, and/or Fortinet solutions * Hands-on experience with Cisco routers and switches * 5+ years designing and implementing large-scale network security solutions * CCNP or equivalent certification or higher preferred * Experience with Cisco security products (FDT, FMC, AMP, Umbrella) * Experience migrating/upgrading diverse platforms * Familiarity with Cisco Wireless LAN controllers in traditional and converged deployments * Cisco ACI and SD-WAN experience a plus * Must have a car and valid driver's license for travel * Legally authorized to work in the US without sponsorship * ACE factor - Attitude, Compassion, Enthusiasm Key aaaa
Sentinel * Medical * Dental * Vision * 401K * Short and Long-Term Disability * Certification and hands-on training

## Description

Experteer Overview As a Senior Network Security Engineer at Sentinel Technologies, you design, implement, and support secure, scalable network solutions for mid-to-enterprise clients. You will work hands-on with Cisco, Palo Alto, and Fortinet technologies, and act as a trusted advisor to ensure highly available, secure networks. The role blends architecture with delivery, enabling you to shape security across client environments while collaborating with cross-functional teams. This is a customer-focused, solutions-driven opportunity at a growing MSP with strong training and certification support. Compensation / Benefits * Design, implement, and support secure network solutions for diverse client environments * Hands-on work with Cisco routers/switches to optimize and secure networks * Deploy and manage Cisco, Palo Alto, and Fortinet firewall solutions * Architect and implement large-scale network security solutions (3+ years experience) * Configure Cisco Security products (ISE, FDT, FMC, AMP, Umbrella) * Perform migrations and upgrades across network/security platforms * Implement wireless networks with Cisco WLCs in centralized and converged deployments * Work with Cisco ACI and SD-WAN (experience a plus) * Provide exceptional customer support and act as trusted advisor to clients Tasks * 8+ years of experience with Cisco, Palo Alto, and/or Fortinet solutions * Hands-on experience with Cisco routers and switches * 5+ years designing and implementing large-scale network security solutions * CCNP or equivalent certification or higher preferred * Experience with Cisco security products (FDT, FMC, AMP, Umbrella) * Experience migrating/upgrading diverse platforms * Familiarity with Cisco Wireless LAN controllers in traditional and converged deployments * Cisco ACI and SD-WAN experience a plus * Must have a car and valid driver's license for travel * Legally authorized to work in the US without sponsorship * ACE factor - Attitude, Compassion, Enthusiasm Key requirements * Medical * Dental * Vision * 401K * Short and Long-Term Disability * Certification and hands-on training


## Related Videos

- [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team)
- [WeAreDevelopers LIVE - Back to CODE100](https://www.wearedevelopers.com/videos/1909-wearedevelopers-live-back-to-code100)
- [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers)
- [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right)
- [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy)
- [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure)

## Related Articles

- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)
- [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)
- [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)
- [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking)
- [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed)
- [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)