Network Security Engineer Jobs in District of Columbia

81 - 100 of 640 Jobs

Data Security EngineerJob Title - Data Security Engineer

BOOZ, ALLEN & HAMILTON, INC.Company Name - BOOZ, ALLEN & HAMILTON, INC.

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Arlington, Virginia, USA

Full-time

Data Security Engineer Key Role: Architect, deploy, and configure data security solutions across various clients for DoD, IC, and Civilian Federal clients. Create new architectures to meet client requirements adhering to Zero T rus t best practices and IC data header guidelines. Interface with key stakeholders, including agency personnel and internal delivery and engineering teams. Assist in building custom policy to ensure positive control of data across hybrid cloud environments. Basic Quali

Security EngineerJob Title - Security Engineer

LeidosCompany Name - Leidos

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Herndon, Virginia, USA

Full-time

Job DescriptionDescription 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 pro

Software Development Engineer II, Infrastructure Security-HLSJob Title - Software Development Engineer II, Infrastructure Security-HLS

Amazon Data Services, Inc.Company Name - Amazon Data Services, Inc.

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Herndon, Virginia, USA

Full-time

AWS Infrastructure Services owns the design, planning, delivery, and operation of all AWS global infrastructure. In other words, we're the people who keep the cloud running. We support all AWS data centers and all of the servers, storage, networking, power, and cooling equipment that ensure our customers have continual access to the innovation they rely on. We work on the most challenging problems, with thousands of variables impacting the supply chain - and we're looking for talented people who

Software Development Engineer II, Infrastructure Security-HLSJob Title - Software Development Engineer II, Infrastructure Security-HLS

Amazon Data Services, Inc.Company Name - Amazon Data Services, Inc.

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Herndon, Virginia, USA

Full-time

Software Development Engineer II, Infrastructure Security-HLSJob Title - Software Development Engineer II, Infrastructure Security-HLS

Amazon Data Services, Inc.Company Name - Amazon Data Services, Inc.

•

Herndon, Virginia, USA

Full-time

Software Development Engineer II, Infrastructure Security-HLSJob Title - Software Development Engineer II, Infrastructure Security-HLS

Amazon Data Services, Inc.Company Name - Amazon Data Services, Inc.

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Herndon, Virginia, USA

Full-time

AWS Security EngineerJob Title - AWS Security Engineer

Advance Digital SystemsCompany Name - Advance Digital Systems

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Washington, District of Columbia, USA

Contract

We are seeking an experienced AWS Security Engineer is responsible for designing, implementing, and maintaining secure cloud architectures in AWS while ensuring continuous compliance with federal cybersecurity policies and frameworks. This hybrid role includes supporting cloud security engineering as well fulfilling the duties of an Information System Security Officer (ISSO) to support Authorization to Operate (ATO) activities, security documentation, and ongoing system monitoring. Position Resp

Lead Platform Engineer, Workday (Workday Security)Job Title - Lead Platform Engineer, Workday (Workday Security)

Capital OneCompany Name - Capital One

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McLean, Virginia, USA

Full-time

Lead Platform Engineer, Workday (Workday Security) The Workday Security Platform Engineer will be responsible for leading the design, implementation, and maintenance of security measures to protect Capital One HR Workday environment. This role involves working closely with cross-functional teams to ensure the confidentiality, integrity, and availability of Workday applications and data. The WD Security Engineer will act as a subject matter expert in Workday security, providing strategic guidanc

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

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

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

Security EngineerJob Title - Security Engineer

LeidosCompany Name - Leidos

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Sterling, Virginia, USA

Full-time

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 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 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

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

IT Security EngineerJob Title - IT Security Engineer

LeidosCompany Name - Leidos

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Springfield, Virginia, USA

Full-time

Job DescriptionDescription We are seeking a Cyber Security Engineer who is responsible for developing and implementing advanced security solutions to defend critical systems, networks, and data against evolving cyber threats. This role combines technical expertise in both software and hardware to support the design and deployment of defensive cyber measures. The engineer conducts research on current and emerging cyber threats, identifies vulnerabilities, and ensures that development environments

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