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Network Security Administrator-Senior
Network Security Administrator-Senior-February 2024
Oakton
Feb 10, 2026
About Network Security Administrator-Senior

  Job Description:

  AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers’ mission.

  Our National Security Team supports the intelligence community, providing, operating and assuring critical voice, video and collaboration services for the full spectrum of operations.

  AT&T has an opening for a Network Security Administrator to support the client’s network tools function in providing firewall expertise.

  Description of Job Duties/Responsibilities:

  Perform IT Systems Administration on physical and virtual infrastructure with a focus on firewall, email, and web security protocols.

  Ensure cyber security and OPSEC policies, principles, and practices are an integral element of the operating environment.

  Integrate hardware and software components within the systems environment. Continually monitor and fine-tune performance of the Information Systems.

  Conduct analyses of network usage, user complaints, traffic interruptions, hardware and software capabilities, and other relevant factors.

  Configure and manage Palo Alto’s, Cisco ESAs, WSAs and Forcepoint Firewalls with basic network experience to include IP addressing, subnets and knowledge of protocols and port numbers.

  Required Clearance: TS/SCI with polygraph. (#ts/sci) (#polygraph)

  Required Qualifications: Candidate must have a total of 10 years of applicable experience. The experience can be a combination of degree and work history. This can be a High School degree and 10 years of work history OR an Associate’s and 8 years, a Bachelors’ and 6 years, a Masters and 4 years or a PhD and 2 years of relevant work history.

  Experience installing and configuring Windows 10; installing and configuring Windows Server 2012; configuring Advanced Server 2012 Services.

  Windows/UNIX Systems Administration experience to include Active Directory Domain Services (DNS, DHCP, GPO Management) as well as Active Directory Certificate Services.

  Experience with firewalls (Palo Alto, McAfee specifically but Cisco or any other vendor is good too).

  Understanding of Security protocols at least the level of Security +.

  Network experience at least with a Network + or CCNA R/S.

  Experience with troubleshooting, to include working from command lines, using Splunk or wireshark.

  Basic Linux / Unix is a plus.

  Desired Qualifications

  Security+ CompTIA commercial certification (or higher, such as CISSP, etc.).

  Windows and UNIX/Linux. VMware.

  Our Network Security Administrator-Senior earns between $79,300 - $148,415 yearly. Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.

  Joining our team comes with amazing perks and benefits:

  Medical/Dental/Vision coverage

  401(k) plan

  Tuition reimbursement program

  Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)

  Paid Parental Leave

  Paid Caregiver Leave

  Additional sick leave beyond what state and local law require may be available but is unprotected · Adoption Reimbursement

  Disability Benefits (short term and long term)

  Life and Accidental Death Insurance

  Supplemental benefit programs: critical illness/accident hospital indemnity/group legal

  Employee Assistance Programs (EAP)

  Extensive employee wellness programs

  Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phone

  Weekly Hours:

  40

  Time Type:

  Regular

  Location:

  Oakton, Virginia

  It is the policy of AT&T to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, AT&T will provide reasonable accommodations for qualified individuals with disabilities.

  AT&T will consider for employment qualified applicants in a manner consistent with the requirements of federal, state and local laws

  We expect employees to be honest, trustworthy, and operate with integrity. Discrimination and all unlawful harassment (including sexual harassment) in employment is not tolerated. We encourage success based on our individual merits and abilities without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, disability, marital status, citizenship status, military status, protected veteran status or employment status

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