Eliassen Group
Eliassen Group

Sr. Network Security Engineer III

Washington, DC, US • Posted 8 hours ago • Updated 8 hours ago
Full Time
On-site
USD $230,000.00 - 290,000.00 per year
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Job Details

Skills

  • Incident Management
  • SAP BASIS
  • NAC
  • Network Design
  • Agile
  • Security Architecture
  • Network Operations
  • Network Engineering
  • Enterprise Networks
  • Intrusion Prevention
  • Access Control
  • Network
  • Management
  • Firewall
  • Virtual Private Network
  • Palo Alto
  • ISE
  • ASA
  • Cisco PIX
  • IDS
  • IPS
  • Hardening
  • Network Security
  • Fortinet
  • Cisco
  • DoD
  • Network+
  • Security+
  • Cloud Computing
  • SSCP
  • CISSP
  • Cisco Certifications
  • Security Clearance
  • Screening
  • Artificial Intelligence
  • Recruiting
  • Taxes
  • Insurance
  • Law
  • Management Consulting
  • Finance
  • Regulatory Compliance

Summary

Description:
Onsite in Washington, DC

The Sr. Network Security Engineer III will secure and harden mission-critical enterprise networks for our client within a federal environment. The role will design and manage firewalls, VPNs, IDS/IPS, and NAC, enforce segmentation, and support incident response. The engineer will act as a hands-on subject matter expert, communicate risk to diverse stakeholders, and enable secure mission delivery across the organization.

This is a full-time, permanent opportunity, offering a competitive salary and comprehensive benefits package. Qualified applicants must be willing and able to work on a w2 basis.

Salary: $230,000 - $290,000/ yr. w2

Responsibilities:
  • Design, implement, and manage firewalls, VPNs, IPS, and NAC solutions in mission-critical environments.
  • Secure network perimeters and internal network segments using defense-in-depth strategies.
  • Respond rapidly to security incidents, vulnerabilities, and operational needs with urgency and discipline.
  • Support continuous security hardening and improvement of network infrastructure.
  • Participate in Agile execution, technical planning, and security risk discussions.
  • Communicate security impacts, risks, and mitigation strategies clearly to technical and non-technical stakeholders.
  • Recommend and implement security architecture and operational improvements.
  • Serve as a hands-on technical SME, contributing immediately with minimal ramp-up.
  • Establish and maintain a high level of customer trust and confidence through reliable, secure delivery.
  • Apply creativity and engineering judgment to deliver practical, mission-focused security solutions.
  • Design, implement, and manage next-generation firewalls, VPN solutions, intrusion prevention systems, and network access control platforms.
  • Secure network perimeters and internal segments, including policy design, segmentation, and threat mitigation.
  • Deploy and manage firewall rule sets, VPN tunnels, and security policies in mission-critical environments.
  • Operate at least one enterprise security platform, such as Palo Alto Networks, Fortinet, or Cisco security technologies.
  • Administer Cisco ISE and Cisco ASA environments.
  • Implement and manage IDS and IPS solutions and endpoint configuration hardening in secure environments.
  • Support Zero Trust architectures and identity-centric network security patterns.
  • Contribute immediately with minimal ramp-up in a mission-critical operational environment.

Experience Requirements:
  • Active Top Secret security clearance with SCI eligibility.
  • Security+ and at least one platform-specific security certification such as PCNSE, Fortinet NSE, or a Cisco security certification.
  • DoD 8140 certification aligned to the 441 Network Operations Specialist work role, such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.
  • 10+ years of network engineering experience focused on enterprise network security infrastructure.
  • Expertise designing, implementing, and managing next-generation firewalls, VPN solutions, intrusion prevention systems, and network access control platforms.
  • Hands-on experience securing network perimeters and internal segments, including policy design, segmentation, and threat mitigation.
  • Operational experience deploying and managing firewall rule sets, VPN tunnels, and security policies in mission-critical environments.
  • Hands-on experience with at least one enterprise security platform, such as Palo Alto Networks, Fortinet, or Cisco security technologies.
  • Hands-on experience with Cisco ISE and Cisco ASA environments.
  • Hands-on experience with IDS and IPS solutions and endpoint configuration hardening in secure environments.
  • Experience supporting Zero Trust architectures and identity-centric network security patterns.
  • Ability to contribute immediately with minimal ramp-up in a mission-critical operational environment.
  • Willingness to serve as essential personnel to support continuity of operations during shutdowns, emergencies, or other critical situations.

Education Requirements:
  • Bachelor's degree in a technical field preferred.
  • Security+ certification.
  • Platform-specific security certification such as PCNSE, Fortinet NSE, or a Cisco security certification.
  • DoD 8140-aligned certification such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.
  • Active Top Secret with SCI eligibility security clearance.


Recruitment Transparency Notice



Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team (, ) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group's use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
Please be advised- If anyone reaches out to you about an open position connected with Eliassen Group, please confirm that they have an Eliassen.com email address and never provide personal or financial information to anyone who is not clearly associated with Eliassen Group. If you have any indication of fraudulent activity, please contact .

About Eliassen Group:

Eliassen Group is a leading strategic consulting company for human-powered solutions. For over 30 years, Eliassen has helped thousands of companies reach further and achieve more with their technology solutions, financial, risk & compliance, and advisory solutions, and clinical solutions. With offices from coast to coast and throughout Europe, Eliassen provides a local community presence, balanced with international reach. Eliassen Group strives to positively impact the lives of their employees, clients, consultants, and the communities in which they operate.

Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.

Don't miss out on our referral program! If we hire a candidate that you refer us to then you can be eligible for a $1,000 referral check!

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.
  • Dice Id: cxelisen
  • Position Id: a1WUQ000001MvtV2AS
  • Posted 8 hours ago

Company Info

About Eliassen Group

Eliassen Group is a leading strategic consulting company that provides business and IT services for our clients as they seek to transform and execute strategies that will drive exceptional outcomes. Leveraging over 30 years of success, we focus on professional services, talent solutions, and life sciences. Eliassen Group offers local community presence and deep networks. We are committed to positively impacting the lives of our employees, clients, consultants, and the communities in which we operate.

Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.

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