Network Security Engineer Jobs in Washington

81 - 100 of 630 Jobs

Senior Endpoint Security EngineerJob Title - Senior Endpoint Security Engineer

Costar GroupCompany Name - Costar Group

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Arlington, Virginia, USA

Full-time

Senior Endpoint Security Engineer Job Description Overview CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world's real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate inf

System Security EngineerJob Title - System Security Engineer

Cymertek CorporationCompany Name - Cymertek Corporation

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Reston, Virginia, USA

Full-time

System Security Engineer LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a highly motivated and detail-oriented System Security Engineer to design, implement, and maintain security measures that protect our critical systems and data. In this role, you will work closely with cross-functional teams to identify vulnerabilities, develop robust security solutions, and ensure compliance with industry standards

Senior Systems Security EngineerJob Title - Senior Systems Security Engineer

SAICCompany Name - SAIC

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Alexandria, Virginia, USA

Full-time

Job ID: 2507174 Location: ALEXANDRIA, VA, US Date Posted: 2025-07-01 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is hiring a Senior Systems Security Engineer with an active TS/SCI clearance to participate in Independent Technical Risk Assessments (ITRA) and Program Protection Plan () reviews to

Information Systems Security EngineerJob Title - Information Systems Security Engineer

Data Intelligence LLC.Company Name - Data Intelligence LLC.

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Vienna, Virginia, USA

Full-time

Data Intelligence, LLC is seeking a skilled Information Systems Security Engineer (ISSE) to support a top-tier federal client engaged in national security and counterterrorism operations. This full-time position, based in Vienna, VA, plays a critical role in securing complex IT systems in a high-visibility, mission-driven environment. The selected candidate will work closely with government and contractor stakeholders to ensure compliance, manage risk, and defend against evolving cyber threats.

Information Systems Security Engineer (ISSE)Job Title - Information Systems Security Engineer (ISSE)

Elite TechnicalCompany Name - Elite Technical

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Fairfax, Virginia, USA

Full-time

Information Systems Security Engineer (ISSE)The Information Systems Security Engineer (ISSE) will directly support the Secretary of the Air Force (SAF) / Office of Competition (OC) Mission Partner Capabilities Office (MPCO) also known as SAF/CDMX Directorate. The Mission Partner Capabilities Office provides design, configuration, accreditation and implementation of mission and R&D information management systems and cloud-based solutions that support defense and intelligence priorities as well as

Information Systems Security Engineer (ISSE)Job Title - Information Systems Security Engineer (ISSE)

Cymertek CorporationCompany Name - Cymertek Corporation

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Reston, Virginia, USA

Full-time

Information Systems Security Engineer (ISSE) LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a proactive and skilled **Information Systems Security Engineer (ISSE)** to join our team and play a critical role in ensuring the security and integrity of our information systems. In this role, you will design, implement, and maintain security solutions to safeguard sensitive data and infrastructure. You will c

Senior Cybersecurity Information System Security EngineerJob Title - Senior Cybersecurity Information System Security Engineer

LMI Government Consulting (Logistics Management InCompany Name - LMI Government Consulting (Logistics Management In

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Fort Belvoir, Virginia, USA

Contract

Overview LMI is seeking a skilled Senior Cybersecurity Information Systems Security Engineer (ISSE) to support US Army PEO Soldier at Ft. Belvoir, Virginia. The ISSE will drive efforts that support software and hardware cybersecurity Risk Management Framework (RMF) Authority to Operate (ATO). LMI is committed to powering a future-ready, high-performing government with integrated capabilities that incorporate emerging technologies. Founded in 1961, LMI has a legacy of helping the Department of

Information System Security EngineerJob Title - Information System Security Engineer

Cymertek CorporationCompany Name - Cymertek Corporation

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Reston, Virginia, USA

Full-time

Information System Security Engineer LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a skilled and proactive Information System Security Engineer to join our cybersecurity team. In this role, you will design, implement, and maintain security solutions to protect critical information systems and ensure compliance with established security standards. You will collaborate with cross-functional teams to asse

Network EngineerJob Title - Network Engineer

Cymertek CorporationCompany Name - Cymertek Corporation

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Reston, Virginia, USA

Full-time

Network Engineer LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a skilled and proactive Network Engineer to join our team and play a key role in designing, implementing, and maintaining our network infrastructure. In this role, you will ensure the reliability, security, and scalability of our network systems, troubleshoot issues, and optimize performance to meet the needs of a dynamic and growing organi

Information Security Systems EngineerJob Title - Information Security Systems Engineer

LeidosCompany Name - Leidos

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Columbia, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a Sr. Information Systems Security 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 an

Intermediate Information Systems Security EngineerJob Title - Intermediate Information Systems Security Engineer

Base-2 Solutions, LLCCompany Name - Base-2 Solutions, LLC

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Fort Meade, Maryland, USA

Full-time

Job Description Supports the Government in the design, development, implementation, and/or integration of IA architectures, systems, or system components.Provides the Government assistance to ensure that the architecture and design of information systems are functional and secure, including program of record systems and special purpose environments with platform IT interconnectivity.Applies knowledge of IA policy, procedures, and workforce structure to design, develop, and implement secure netwo

Network Engineer / Systems Administrator (SA)Job Title - Network Engineer / Systems Administrator (SA)

Cymertek CorporationCompany Name - Cymertek Corporation

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Reston, Virginia, USA

Full-time

Network Engineer / Systems Administrator (SA) LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a highly skilled and proactive **Network Engineer / Systems Administrator (SA)** to join our team and play a pivotal role in maintaining and enhancing our IT infrastructure. In this role, you will be responsible for designing, implementing, and managing network systems, as well as ensuring the reliability, secur

System Security EngineerJob Title - System Security Engineer

Cymertek CorporationCompany Name - Cymertek Corporation

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Chantilly, Virginia, USA

Full-time

System Security Engineer LOCATION Chantilly, VA 20151 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a highly motivated and detail-oriented System Security Engineer to design, implement, and maintain security measures that protect our critical systems and data. In this role, you will work closely with cross-functional teams to identify vulnerabilities, develop robust security solutions, and ensure compliance with industry standa

Systems Security EngineerJob Title - Systems Security Engineer

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Chantilly, Virginia, USA

Full-time

Job Number: R0220802 Systems Security Engineer The Opportunity: Are you looking for an opportunity to combine your technical skills with big picture thinking to make an impact in national security? You understand your customer's environment and how to develop the right systems for their mission. Your ability to translate real-world needs into technical specifications makes you an integral part of delivering a customer-focused engineering solution. As a leader in systems engineering, we're lookin

Information Systems Security Engineer (ISSE)Job Title - Information Systems Security Engineer (ISSE)

Cymertek CorporationCompany Name - Cymertek Corporation

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Chantilly, Virginia, USA

Full-time

Information Systems Security Engineer (ISSE) LOCATION Chantilly, VA 20151 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a proactive and skilled **Information Systems Security Engineer (ISSE)** to join our team and play a critical role in ensuring the security and integrity of our information systems. In this role, you will design, implement, and maintain security solutions to safeguard sensitive data and infrastructure. You wil

Information Systems Security Engineer (ISSE) - PlacementJob Title - Information Systems Security Engineer (ISSE) - Placement

Apex SystemsCompany Name - Apex Systems

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Washington, District of Columbia, USA

Full-time

Job#: 2070910 Job Description: Apex Systems is seeking an Information Systems Security Engineer (ISSE) to support the US Airforce at the Pentagon. If interested, email your resume. Position: ISSE Location: Fully onsite @ the Pentagon Hours: M-F 8 hour shift between 6AM-6PM Compensation: $145,000-$155,000/yr Job type: Long term contract Certifications: Must have Security + Overview: Seeking high-level IT Professionals to provide cyber security and security engineering services including syste

Security EngineerJob Title - Security Engineer

LeidosCompany Name - Leidos

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Chantilly, Virginia, USA

Full-time

We are seeking a highly skilled Cyber Security Engineer supporting the NRO cyber operations group or Industrial Control Systems group at each site by working with the Information Security Offices to design, implement, and support defensive security solutions that safeguard mission-critical systems and data. The ideal candidate will have deep expertise in cyber threat research, vulnerability assessment, and secure software development practices. This role focuses on protecting networks, data, and

Security Engineer With Splunk Experience - RemoteJob Title - Security Engineer With Splunk Experience - Remote

The Dignify Solutions, LLCCompany Name - The Dignify Solutions, LLC

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Herndon, Virginia, USA

Contract, Third Party

Splunk Enterprise Certified Administrator Effective communication and collaboration skills Problem-solving skills and the ability to think strategically about security Continuous learning mindset Experience with data onboarding, parsing, and indexing in Splunk Minimum 5 years of hands-on experience in Splunk Administration Minimum 3 years of hands-on experience with AWS Proficient in both Linux and Windows environments Hardware, software, and network-level troubleshooting skills Log management a

Virtru Security EngineerJob Title - Virtru Security Engineer

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Arlington, Virginia, USA

Full-time

Job Number: R0219984 Virtru Security Engineer The Opportunity: As a Virtru Security Engineer you'll play a critical role in the world of zero t rus t. You will support the cyber architecture development, implementation, and sustainment across multiple networks of different classification levels. You'll interface with stakeholders and engineering teams to delve into the details and dependencies of critical processes and users' roles within them. You'll lead security compliance initiatives and a

Information System Security Engineer - SeniorJob Title - Information System Security Engineer - Senior

JacobsCompany Name - Jacobs

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Washington, District of Columbia, USA

Full-time

As a Top Secret Information Systems Security Engineer (ISSE) for this program, you will be working in an organization that's mission is to develop and operate the best possible software for critical national security enterprise applications. This organization leverages SCRUM and SAFE Agile software development methodology and strong Dev Ops practices. You will be responsible for the secure design, analysis, and test of information security systems and products. You will ensure technical documen