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Diversified Services Network, Inc.

(1117415) Network Security Engineer

Dallas
Level
Senior

Not stated in the posting: salary, work type, visa.

Open. First seen 21 October 2026.

Apply on the company's site →

About the role

Network Security Engineer

Full-Time | Onsite, 5 Days per Week

Diversified Services Network, Inc. (DSN) is seeking a full-time Network Security Engineer to join our team in your choice of our Dallas, TX, Nashville, TN, or East Peoria, IL office locations. We offer full benefits, PTO, 401k, and more! If you're looking to grow your career within an extremely reputable, stable Fortune 100 company - let's talk!

Position Overview

The Network Security Engineer will join a team that delivers network security service offerings across a global enterprise environment. This role blends hands-on operational support with project work aimed at strengthening the organization's overall security posture, keeping critical services secure, reliable, and continuously improving.

Key Responsibilities

  • Provide daily operational support and maintenance for the team's network and firewall policy service offerings and the products that deliver them.
  • Perform Network Access Control (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.

Requirements

Qualifications

Education & Experience

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

Required Technical Skills

  • Working knowledge of cybersecurity network best practices.
  • Working knowledge of internal network management and data/traffic flows.
  • Solid knowledge of firewall management and network protocols.
  • Functional, hands-on experience with Cisco ISE.

Required Soft Skills

  • Advanced customer service skills.

Benefits

Diversified Services Network, Inc.'s standard text
  • 401(k)
  • Dental insurance
  • Vision Insurance
  • Disability insurance
  • Employee assistance program
  • Health insurance
  • Health savings account
  • Life insurance
  • Paid time off
  • Paid Holidays

Please follow the link to our website for a list of job openings in Engineering, IT, Project Management, and more! https://www.dsnworldwide.com

Salary expectations: 90,000-95,000 per annual

What this role asks for

Particular to this role

Cisco · Networking

Rare in Diversified Services Network, Inc.'s other 44 open postings.

Standard for security roles

Cybersecurity

Common in security postings at any company.

88% of this description is written for the role. The rest is Diversified Services Network, Inc.'s standard text, folded away below.

Compared with Diversified Services Network, Inc.'s other open jobs.

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