Software security Jobs in District of Columbia

361 - 380 of 685 Jobs

Systems Security EngineerJob Title - Systems Security Engineer

SAICCompany Name - SAIC

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Beltsville, Maryland, USA

Full-time

Job ID: 2508107 Location: BELTSVILLE, MD, US Date Posted: 2025-07-31 Category: Cyber Subcategory: Cybersecurity Ops Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: Top Secret Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is seeking a highly motivated Systems Security Engineer. The successful candidate will provide support to the Cybersecurity Integrity Center in the Department of State Bureau of Diplomatic Technol

Senior Information Systems Security OfficerJob Title - Senior Information Systems Security Officer

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

We're searching for talented individuals who provide intelligence, engineering, and mission management expertise for the Government.This program will maximize the effectiveness and efficiency of our country's most important missions both at home and abroad. If you are ready to support a high-performing team that truly makes a difference, thencome join us! Job Description: The Information System Security Officer will provide vital support for the implementation and maintenance of our information

Information System Security Engineer 3Job Title - Information System Security Engineer 3

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

ORANGE you glad that you chose RealmOne? RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do this by offering exceptional benefits, flexible schedules, and the tools necessary to achieve success through paid training, mentoring, and the opportunity to work alongside top-notch security professionals. Join us on this journey as we execute t

Information System Security Engineer 2Job Title - Information System Security Engineer 2

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

Lead Baseline Security EngineerJob Title - Lead Baseline Security Engineer

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Washington, District of Columbia, USA

Full-time

Job Number: R0218699 Baseline Security Engineer, Lead Key Role: Develop and implement security solutions in alignment with security strategy. Maintain an awareness of market and technology trends to bring best of breed solutions to the client. Apply leading-edge principles, theories, and concepts and contribute to the development of new principles and concepts. Work on unusually complex problems and provide highly innovative solutions. Operate with substantial latitude for unreviewed action or

Information Systems Security EngineerJob Title - Information Systems Security Engineer

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Fort Belvoir, Virginia, USA

Full-time

Job Number: R0221437 Information Systems Security Engineer The Opportunity: Are you looking for an opportunity to share your experience in system security engineering to help our country and assist our clients with critical missions? As a systems security and network security engineer, you can identify the Information System Security Engineering needed to assess vulnerabilities and recommend the best solution and security strategy. We need your experience to lead the development and implementat

Security EngineerJob Title - Security Engineer

ManTechCompany Name - ManTech

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Herndon, Virginia, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Security Engineer to join our team in Herndon, VA. We are searching for a highly skilled Security Engineer to design, implement, and maintain secure environments that align with compliance standards in support of a high priority mission at one of our National Intelligence Customers. This role requires an individual with a strong technical foundation in cybersecurity, a deep understanding of federal security frameworks, and a proactive appro

Security EngineerJob Title - Security Engineer

ManTechCompany Name - ManTech

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Herndon, Virginia, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Security Engineer to join our team in Herndon, VA. The Security Engineer will design, implement, and maintain secure environments that align with compliance standards in support of a high priority mission at one of our National Intelligence Customers. This role requires an individual with a strong technical foundation in cybersecurity, a deep understanding of federal security frameworks, and a proactive approach to protecting mission-criti

Senior Network Security EngineerJob Title - Senior Network Security Engineer

Costar GroupCompany Name - Costar Group

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Arlington, Virginia, USA

Full-time

Senior Network 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 info

Security Analyst 2Job Title - Security Analyst 2

ManTechCompany Name - ManTech

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Chantilly, Virginia, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Security Analyst 2 to join our team in the Chantilly, VA area. Responsibilities include, but are not limited to: Fingerprinting NRO personnel and collecting and inputting biographical dataUploading and submitting fingerprints into the system of recordTaking the initiative, conducting work-arounds when needed, and making necessary decisions to ensure progress is made reach goalsUsing multiple NRO, DOD, and IC databases including, but not li

Network Security AnalystJob Title - Network Security Analyst

Cymertek CorporationCompany Name - Cymertek Corporation

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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

Sr. Systems Administrator TS/SCI PolyJob Title - Sr. Systems Administrator TS/SCI Poly

LeidosCompany Name - Leidos

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Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a System Administrator 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 vesting,

Senior Information Systems Security OfficerJob Title - Senior Information Systems Security Officer

BlueHaloCompany Name - BlueHalo

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Annapolis, Maryland, USA

Full-time

At BlueHalo, an AV Company, our Cyber experts operate at the mission's edge. Using advanced cyber techniques, our team of technologists and analysts employ capabilities spanning traditional computing environments to Internet of Things (IoT), including offensive and defensive cyber operations and analysis, signals intelligence (SIGINT) discovery, and data science. Our team is expanding to do the big things that have never been done before - the things the nation and the world are counting on us t

Senior Security Engineer - Cyber Threat Mitigation LeadJob Title - Senior Security Engineer - Cyber Threat Mitigation Lead

Electronic Consulting Services, Inc (ECS Federal)Company Name - Electronic Consulting Services, Inc (ECS Federal)

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Washington, District of Columbia, USA

Full-time

Job Description ECS is seeking a Senior Security Engineer - Cyber Threat Mitigation Lead to work in our Washington, DC office. Please Note: This position is contingent upon additional funding. ECS Federal is a leading information security and information technology company in Washington, DC. We are looking to hire a Senior Security Engineer - Cyber Threat Mitigation Lead to lead a cross functional team (Cyber Threat Intelligence, Hunt, and Analytics) on a long-term contract in Washington DC.

Sr. System Administrator TS/SCI PolyJob Title - Sr. System Administrator TS/SCI Poly

LeidosCompany Name - Leidos

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Annapolis, Maryland, USA

Full-time

Information Systems Security Manager (ISSM)Job Title - Information Systems Security Manager (ISSM)

Cymertek CorporationCompany Name - Cymertek Corporation

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Reston, Virginia, USA

Full-time

Information Systems Security Manager (ISSM) 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 dedicated and results-driven Information Systems Security Manager (ISSM) to lead and oversee the security management of our information systems. In this pivotal role, you will be responsible for ensuring the confidentiality, integrity, and availability of organizational systems while maintaining compliance w

Information Systems Security Engineer IIJob Title - Information Systems Security Engineer II

LeidosCompany Name - Leidos

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Annapolis, Maryland, USA

Full-time

The Digital Modernization Sector at Leidos currently has an immediate need for an experienced Information Systems Security Engineer (ISSE) II for a strategic High-Performance Computing (HPC) program. The ISSE II will need to be a self-starter with excellent analytical and problem-solving skills, flexibility, good judgment, and the ability to work within a team to mature the HPC capabilities of our customer. Primary Responsibilities: Assists the Government in creating techniques and tools within

Data Center Security OfficerJob Title - Data Center Security Officer

SecuritasCompany Name - Securitas

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Woodbridge, Virginia, USA

Full-time

Data Center Security Officer Your Next Career Opportunity Starts Here! What We Offer for Security Officers: Pay: $19.00 per hourShift Availability: 2nd Shift: 2:00 PM - 10:00 PM3rd Shift: 10:00 PM - 6:00 AM (Required to work at least one weekend shift, Saturday or Sunday) Apply now and take the first step toward a rewarding career with Securitas USA! Why Join Securitas? Weekly Pay: Get paid every week!Career Growth Opportunities: Advance your career with leadership roles, specialized training

Information Systems Security Manager (ISSM)Job Title - Information Systems Security Manager (ISSM)

Cymertek CorporationCompany Name - Cymertek Corporation

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Tysons, Virginia, USA

Full-time

Information Systems Security Manager (ISSM) LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for an experienced and dedicated **Information Systems Security Manager (ISSM)** to join our team and lead efforts to secure and protect our information systems. In this role, you will be responsible for overseeing the security posture of our organization's systems, ensuring compliance with relevant standards, and

Staff Software Engineer, Secure Development EngineeringJob Title - Staff Software Engineer, Secure Development Engineering

AirbnbCompany Name - Airbnb

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Remote

Full-time

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Airbnb is built on trust. The Secure Software Development Engineering team is dedicated to ensuring the sec