Network Engineer, Senior

Responsibilities

We are seeking a highly skilled Network Engineer to support a large enterprise customer by delivering secure network design and implementation services across on‑premises, data center, and cloud environments. This role is part of a multi‑year strategic initiative focused on transforming the organization’s data processing, handling, and warehousing capabilities. The ideal candidate will work closely with project management teams, internal IT departments, and managed services teams to ensure seamless integration, security, and performance of network infrastructure.

This is a dynamic role with opportunities to contribute to additional projects as they arise. This position is full‑time, can be performed remotely within the United States, and requires occasional on‑site support at the Downers Grove, Illinois office.

• Must have extensive experience with network design and architecture
• CCIE or PCNSE certifications preferred
• Must have experience in network engineering with enterprise environments
• Expertise in internet routing protocols and network security concepts
• Hands‑on experience with Virtual Private Networks (VPNs)
• In‑depth knowledge of firewall configuration, policies, and rule management
• Solid understanding of DNS (zones, records, and troubleshooting)
• Experience with SSL and secure communications
• Experience with Cisco routers and switches
• Hands‑on experience with Palo Alto firewalls
• Familiarity with F5 load balancers
• Exposure to OCI (Oracle Cloud Infrastructure) / Oracle databases
• Excellent communication and customer‑facing skills
• Must have a car, as this position requires travel between locations and transportation of equipment
• A valid driver’s license and proof of vehicle insurance will be required
• Legally authorized to work in the US without sponsorship
• Must demonstrate a "can‑do" attitude

$150,000-$170,000 annually

• Medical
• Dental
• Vision
• 401K
• 529 plan
• Life Insurance
• Income Protection (Short and Long‑Term Disability)
• Medical and Child/Elder Care
• Flexible Spending Account Plans
• Family Planning Benefits
• Financial Education
• Identity Theft Protection and Assistance
• Legal Services
• Employee Assistance Program
• Two weeks’ vacation
• Additional paid time‑off for personal and sick days
• Certification and hands‑on training
• Employee discount for product services and entertainment

Sentinel is proud to be an equal opportunity employer including disability and veterans. In accordance with Title VII and state regulations, all qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, marital status, pregnancy, genetics, disability, military, veteran status or any other basis protected by law.