81 - 100 of 433 Jobs

Associate Industrial Security Representative

Leidos

Gaithersburg, Maryland, USA

Full-time

Description The Digital Modernization Sector at Leidos is seeking an Associate Industrial Security Representative to join our security team in Gaithersburg, MD. The position operates under the guidance of the Leidos DECO/Global Solutions Management Operations (GSMO) Security Manager in the application of Leidos security standards and practices to existing US government facilities identified by the contract. Primary Responsibilities: Supporting, implementing, and providing guidance to customers

Information Systems Security Engineer - Top Secret W/ SCI Eligibility REQUIRED

TEKsystems c/o Allegis Group

Aberdeen, Maryland, USA

Full-time

Description Our team members are subject matter experts in both cybersecurity and US Government policy. We're excited about generating creative solutions to ambiguous security requirements. Our mission is deploying software in support of our customers' most critical needs as quickly as possible while upholding the government's trust. We achieve this through close consultation with stakeholders and direct ownership of the Authorization to Operate (ATO) process. We're seeking dedicated and motivat

Cyber Security Analyst - TS/SCI w/Polygraph

General Dynamics

Herndon, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Cyber Security Job Qualifications: Skills: Analytical Thinking, Cybersecurity, Security Controls Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Own your career as a Cyber Security Analyst at GDIT. Here, you'll have the opportunit

Cybersecurity Specialist

SAIC

Aberdeen Proving Ground, Maryland, USA

Full-time

Job ID: 2506984 Location: ABERDEEN PROVING GROUND, MD, US Date Posted: 2025-06-25 Category: Cyber Subcategory: Cybersecurity Spec Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI with Poly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAlC is seeking a Cybersecurity Specialist to support the U.S. Army Combat Capabilities Development Command (CCDEVCOM), Engineering and Systems Integration (ESl) Directorate, Quick

WIDS Engineer TS/SCI w/poly

General Dynamics

Chantilly, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Radio Frequency Job Qualifications: Skills: Digital Radio, Radio Frequency (RF), Wireless, Wireless Networks, Written Communication Certifications: None Experience: 2 + years of related experience ship Required: Yes Job Description: As a Signals Engineer you will conduct active moni

Information System Security Officer (ISSO)

Maxar Technologies Holdings Inc

Reston, Virginia, USA

Full-time

Please review the job details below. Maxar is seeking an Information System Security Officer (ISSO) to join our team in Reston, VA. Life with Us: Project: We're supporting a well-established customer that works on a critical and high-visibility mission. The team is tremendously talented and we need to add a seasoned ISSO with a strong foundation in US Government IT experience to work on the growing number of customer requirements. Previous experience working on-site to support the DoD and the

Senior Information System Security Engineer

Booz Allen Hamilton

Lexington, Massachusetts, USA

Full-time

Job Number: R0222757 Information System Security Engineer, Senior Key Role: Maintain responsibility for all Information Systems Security Engineer ( ISSE ) duties in support of Department of Defense ( DoD ) Risk Management Framework ( RMF ) and Intelligence Community Directive ( ICD ) 503. Leverage knowledge of National Institute of Standards and Technology ( NIST ) Spe cia l Publication 800-53 security controls and the Committee on National Security Systems Instruction 1253. Apply systems secur

Systems Integration Engineer Staff

Lockheed Martin Corporation

Littleton, Colorado, USA

Full-time

Job Description For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy's mission to provide affordable and credible strategic defense. We offer unique career opportunities and challenges on a program with a rich history and exciting future. We help keep this nation and our allies secure. The FBM Program is experiencing significant growth and we need your expertise to deliver amazing new technologies to our customers while maintaining the technical requirements of the s

Cybersecurity Systems Engineer/Information Systems Security Engineer (ISSE) - TS/SCI w. Polygraph

General Dynamics

Elkridge, Maryland, 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: Cyber Security Job Qualifications: Skills: Cybersecurity, Information Security Operations, Information System Security Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: *Position is currently located in Elkridge, MD and will relocate to anothe

Information System Security Officer (ISSO), Level 1

Lockheed Martin Corporation

Colorado Springs, Colorado, USA

Full-time

Job Description Lockheed Martin is a cybersecurity pioneer, partner, innovator and builder. Our amazing employees are on a mission to make a difference in the world and every single day we use our unique skills and experiences to create, design and build solutions to some of the worlds' hardest engineering problems. Do you want to be part of a culture that inspires employees to think big, perform with excellence and build incredible products? We provide the resources, inspiration and focus - i

Lead, Unmanned Maritime Systems Engineer (Top Secret Clearance)

Harris Corporation

Palm Bay, Florida, USA

Full-time

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris Technologie

Senior Specialist, Network Plan Engineer

Harris Corporation

San Antonio, Texas, USA

Full-time

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris Technologie

Systems Engineer, Senior

Lockheed Martin Corporation

Huntsville, Alabama, USA

Full-time

Job Description Protecting what matters most is the mission that matters most. The modern missile-threat landscape is characterized by increasing complexity and rapid evolution, making it essential to adopt a multifaceted defense approach. At Lockheed Martin, we recognize the critical importance of developing and integrating advanced solutions to protect people and nations worldwide. Detecting an enemy missile launch, identifying its intended target, calculating its precise trajectory, launchi

Classified Cybersecurity Senior ISSO

Lockheed Martin Corporation

Stratford, Connecticut, USA

Full-time

Job Description Oversee day-to-day information system security operations including auditing the IS, hardware, and software implementations and RMF package authorizations. Carry out technical administration of IS in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF). Upkeep, monitor, analyze, and respond to network and security events. Document compliance actions with the ISSM to address non-compliance in the allotted time frame. Ensure syst

Information Systems Security Manager - TS/SCI with Polygraph

General Dynamics

Bethesda, Maryland, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Information Security Job Qualifications: Skills: Cloud:Amazon Web Services (AWS), Plan of Action and Milestones (POA&M), RMF, Xacta (Platform) Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a person

Information Systems Security Manager - TS/SCI with Polygraph

General Dynamics Information Technology

Bethesda, Maryland, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Information Security Job Qualifications: Skills: Cloud:Amazon Web Services (AWS), Plan of Action and Milestones (POA&M), RMF, Xacta (Platform) Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a person

Information Systems Security Manager - TS/SCI with Polygraph

General Dynamics Information Technology

Bethesda, Maryland, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Information Security Job Qualifications: Skills: Cloud: Amazon Web Services (AWS), Plan of Action and Milestones (POA&M), RMF, Xacta (Platform) Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a pers

Information System Security Officer - TS/SCI w/Poly

General Dynamics Information Technology

McLean, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Information Security Job Qualifications: Skills: Amazon Web Services (AWS), Plan of Action and Milestones (POA&M), Risk Management Framework Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a persona

Information System Security Officer - TS/SCI w/Poly

General Dynamics Information Technology

McLean, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Information Security Job Qualifications: Skills: Amazon Web Services (AWS), Plan of Action and Milestones (POA&M), Risk Management Framework Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a personal

Senior Information Systems Security Manager

RTX Corporation

Cambridge, Massachusetts, USA

Full-time

Date Posted: 2025-07-29 Country: United States of America Location: MA105: BBN Headquarters 10 Moulton Street , Cambridge, MA, 02138 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: Top Secret Senior Information Systems Security Manager (Sr. ISSM) Our Cybersecurity team in Cambridge, MA. have a great opportunity for