Senior Network Security Administrator Jobs

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Senior Computer Network Engineer

Leidos

Odenton, Maryland, USA

Full-time

Job DescriptionDescription The Digital Modernization Sector at Leidos has an opening for a senior Network Engineer on the DISA Defense Red Switch Network team in support of an enterprise VoIP management system GSM-O II contract at Fort Meade, MD. The successful candidate will have a Network Engineering background responsible for the design, document, test, deployment and maintenance of the IP network solutions within an enterprise environment on a high-paced, fast-moving program. As a Network E

Senior Security Architect - Northeast region (Remote in Boston or New York Metro)

GuidePoint Security

Remote

Full-time

GuidePoint Security provides trusted cybersecurity expertise, solutions and services that help organizations make better decisions and minimize risk. By taking a three-tiered, holistic approach for evaluating security posture and ecosystems, GuidePoint enables some of the nation's top organizations, such as Fortune 500 companies and U.S. government agencies, to identify threats, optimize resources and integrate best-fit solutions that mitigate risk. GuidePoint Security is seeking an experienced

Senior Principal Network Engineer (P4), ONSITE, Tucson AZ

RTX Corporation

Tucson, Arizona, USA

Full-time

Date Posted: 2025-07-07 Country: United States of America Location: AZ888: RMS AP Bldg 928 1151 East Hermans Road Building 928, Tucson, AZ, 85706 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Secret Senior Principal Network Engineer (P4) Raytheon Digital Technology Classified Infrastructure Services Classified Netw

Application Security Administrator

VC5 Consulting

US

Full-time

We are seeking a highly skilled Application Security Administrator to serve as a pivotal bridge between our development and security teams, proactively safeguarding our applications from legacy systems to greenfield projects. This role is critical to enhancing our cybersecurity posture and ensuring security is integrated seamlessly throughout the software development lifecycle.Key Responsibilities: Conduct regular vulnerability management by running, interpreting, and verifying results from SAST

Network Security Engineer

Prosum

New York, New York, USA

Full-time

NETWORK SECURITY ENGINEER Salary Range: $160k to $200k LOCATION: NEW YORK (HYBRID) Job Summary: A Network Security Engineer is responsible for the design, implementation, and maintenance of network security infrastructure to protect an organizations data and systems from cyber threats. The engineer will manage firewalls, VPNs, intrusion detection systems (IDS), intrusion prevention systems (IPS), and other security measures, ensuring the confidentiality, integrity, and availability of sensitive

Senior Windows Server Systems Administrator

Leidos

Bethesda, Maryland, USA

Full-time

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Employees enjoy career enrichment opportunities available through mobility and development an

Sr Principal Engineer Software (Cloud Security)

PaloAlto Networks

Santa Clara, California, USA

Full-time

Company Description Our Mission At Palo Alto Networks everything starts and ends with our mission: Being the cybersecurity partner of choice, protecting our digital way of life. Our vision is a world where each day is safer and more secure than the one before. We are a company built on the foundation of challenging and disrupting the way things are done, and we're looking for innovators who are as committed to shaping the future of cybersecurity as we are. Who We Are We take our mission of

Senior System Security Engineer

Parsons Services Company

Boulder, Colorado, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is seeking a talented Senior Cyber Security Engineer to join our growing tea

Senior Network Engineer

Fortinet

Sunnyvale, California, USA

Full-time

Job Description Responsibilities: Deliver network implementation and remediation projects to meet demands Identify, diagnose and resolve network problem, analyze root cause Install, maintains and upgrade network hardware, software, and operating systems Reporting network operational status by gathering, prioritizing information Securing network system by establishing and enforcing policies, and defining and monitoring access Maximizing network performance by monitoring performance, troubleshoo

Senior Network Engineer (shift work)

Leidos

Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a Senior Network Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vestin

Systems Administrator Senior (VMware) - TS/SCI required

General Dynamics

Fort Belvoir, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Computer Backups, Disaster Recovery (DR), System Administration Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Systems Administrator Senior (VMware) - TS/SCI required Transform technology

Network Security Threat Detection Engineer

Meta Platforms, Inc. (f/k/a Facebook, Inc.)

Menlo Park, California, USA

Full-time

Meta Platforms, Inc. (f/k/a Facebook, Inc.) has the following positions in Menlo Park, CA Network Security Threat Detection Engineer: Develop optimized network monitoring systems. Design and deploy new network architectures (ref. code REQ-2502-147390: $222,772/year - $240,240/year). Individual pay is determined by skills, qualifications, experience, and location. Compensation details listed in this posting reflect the base salary only, and do not include bonus or equity or sales incentives, if a

Systems Administrator - Senior - TS/SCI required

General Dynamics

Shafter, California, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Communication, Information Technology (IT) Systems, System Infrastructure Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Systems Administrator Senior - TS/SCI required Transform technology

Information System Security Engineer - Senior

Jacobs

Warrenton, Virginia, USA

Full-time

Are you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking an Information System Security Engineer - Senior to join our team of passionate individuals in Warrenton, VA. In this role you will support challenging, mission-critical projects that make a direct impact on the Nation's security and intelligence mission. Your Impact: The mission of the Lone Wolf program is to support, operate, and maintain the Distributed Continu

Network Security Analyst

Cymertek Corporation

Honolulu, Hawaii, USA

Full-time

Network Security Analyst LOCATION Honolulu, HI 96815 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a detail-oriented and proactive Network Security Analyst to join our cybersecurity team. In this role, you will monitor, analyze, and protect the organization's network infrastructure against potential threats and vulnerabilities. You will be responsible for identifying security risks, responding to incidents, and implementing

Network Security Analyst

Cymertek Corporation

Tysons, Virginia, USA

Full-time

Network Security Analyst LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a detail-oriented and proactive Network Security Analyst to join our cybersecurity team. In this role, you will monitor, analyze, and protect the organization's network infrastructure against potential threats and vulnerabilities. You will be responsible for identifying security risks, responding to incidents, and implementing m

Network Security Analyst

Cymertek Corporation

Chantilly, Virginia, USA

Full-time

Network Security Analyst LOCATION Chantilly, VA 20151 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a detail-oriented and proactive Network Security Analyst to join our cybersecurity team. In this role, you will monitor, analyze, and protect the organization's network infrastructure against potential threats and vulnerabilities. You will be responsible for identifying security risks, responding to incidents, and implementin

Network Security Analyst

Cymertek Corporation

Georgia, USA

Full-time

Network Security Analyst LOCATION Fort Eisenhower, GA 30905 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a detail-oriented and proactive Network Security Analyst to join our cybersecurity team. In this role, you will monitor, analyze, and protect the organization's network infrastructure against potential threats and vulnerabilities. You will be responsible for identifying security risks, responding to incidents, and imple

Network Security Analyst

Cymertek Corporation

Reston, Virginia, USA

Full-time

Network Security Analyst LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a detail-oriented and proactive Network Security Analyst to join our cybersecurity team. In this role, you will monitor, analyze, and protect the organization's network infrastructure against potential threats and vulnerabilities. You will be responsible for identifying security risks, responding to incidents, and implementing m

Network Security Analyst

Cymertek Corporation

Annapolis, Maryland, USA

Full-time

Network Security Analyst LOCATION Annapolis Junction, MD 20701 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a detail-oriented and proactive Network Security Analyst to join our cybersecurity team. In this role, you will monitor, analyze, and protect the organization's network infrastructure against potential threats and vulnerabilities. You will be responsible for identifying security risks, responding to incidents, and im