Network Security Engineer – Onsite, NAC and Firewall Expert

Diversified Services Network; Dallas (TX); On-site; USD 90,000 - 95,000; Full time

Benefits offered by this job

401(k)

Dental insurance

Vision insurance

Disability insurance

Employee assistance

Health insurance

Health savings account

Life insurance

Paid time off

Paid holidays

Job summary

Diversified Services Network, Inc. (DSN) is seeking a full-time Network Security Engineer to join our team in Dallas, TX, with additional offices in Nashville, TN and East Peoria, IL.

This role combines hands-on operational support with project work to strengthen security posture and ensure continuous availability of critical services. The Network Security Engineer will deliver network security services across a global enterprise, performing reliable maintenance, risk reduction, and policy

Qualifications

• Bachelor's degree in Cybersecurity, Security Engineering/Architecture, Computer Science, or a related field, or equivalent experience.
• 5–7 years of relevant experience.

Responsibilities

• Provide daily operational support and maintenance for the team's network and firewall policy service offerings and the products that deliver them.
• Perform NAC governance activities using Cisco ISE.
• Execute network improvement and risk reduction initiatives, including network segmentation, application protection, and hardware refresh projects.
• Manage application protection and proxy policy activities.
• Partner with internal process partners to troubleshoot and resolve technical issues across firewall, cloud policy, and other supported products.
• Conduct testing and quality assurance for changes and new process deployments prior to production release.
• Assist Product Owners in resolving technical matters and in implementing, maintaining, and supporting the technical and process elements of firewall policy, network posture, and the team's web-based portal.

Skills

Firewall management

Cisco ISE

Network security

Network protocols

NAC governance

Customer service

Education

Bachelor's degree in Cybersecurity/related field

Tools

Cisco ISE

Job description

Diversified Services Network, Inc. (DSN) is seeking a full-time Network Security Engineer to join our team in Dallas, TX, with additional offices in Nashville, TN and East Peoria, IL.

This role combines hands-on operational support with project work to strengthen security posture and ensure continuous availability of critical services. The Network Security Engineer will deliver network security services across a global enterprise, performing reliable maintenance, risk reduction, and policy