301 - 320 of 722 Jobs

Mid Cybersecurity Engineer

Booz Allen Hamilton

San Diego, California, USA

Full-time

Job Number: R0223686 Cybersecurity Engineer, Mid The Opportunity: Are you looking for an opportunity to advance your experience in cybersecurity and security engineering that will safeguard our nation ? As a systems security and network security engineer, you can identify the tools, applications, and systems needed to assess vulnerabilities and recommend the best solution and security strategy. We need your experience to develop and implement security solutions that will protect our military .

Information Systems Security Officer (ISSO) Senior - TS/SCI w/Poly

Jacobs

Fort Meade, Maryland, USA

Full-time

Your Impact: Are you searching for a professional environment that encourages personal and educational development and dedication to the mission? Join a team of security experts who are dedicated to protecting and securing our customers' systems at both the enterprise and program level. Our specialists work closely with others in the RMF process to ensure the highest level of security for every system. Amentum is seeking an Information Systems Security Officer (ISSO) Senior for a prime contrac

Senior Specialist, Cyber Infrastructure Systems Engineer TS/SCI- Vandenberg, CA

Harris Corporation

Lompoc, California, 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

Linux Systems Administrator (Tier I)

American Systems Corporation

Arlington, Virginia, USA

Full-time

Overview AMERICAN SYSTEMS is a 100% employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Program Mission Support, Engineering & Analysis, and Training. Responsibilities This job requisition is for potential upcoming work at AMERICAN SYSTEMS and does not represent a current opening. Qualified candidates will be contacted when the work becomes available. As a Tier I Linux S

Information System Security Officer (ISSO)

Leidos

Marysville, California, USA

Full-time

Are you ready for a rewarding career opportunity? Unleash your potential at Leidos, where we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer's success. We empower our teams, contribute to our communities, and operate sustainably. 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. If this sounds like an

Cyber Security Engineer Staff

Lockheed Martin Corporation

King of Prussia, Pennsylvania, USA

Full-time

Job Description The coolest jobs on this planet or any other are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin Space is a pioneer, partner, innovator and builder. Our amazing people are on a mission to make a difference in the world. Every single day we use our unique skills and experiences to craft, design and build solutions to some of the worlds' hardest engineering problems. Our culture inspires employees to dream big, perform with excellence and build incredi

Information System Security Officer (ISSO) - Tucson, AZ

RTX Corporation

Tucson, Arizona, USA

Full-time

Date Posted: 2025-07-29 Country: United States of America Location: AZ855: RMS AP Bldg M05 1151 East Hermans Road Building M05, Tucson, AZ, 85756 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 At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation

Senior Information Systems Security Engineer

Leidos

Maryland, USA

Full-time

As a Senior Information Security Systems Engineer (ISSE) you will join a small team of security engineers providing Information Assurance (IA) Architecture Analysis and Security Engineering Support for the implementation and fielding of the National Leadership Command Capability in support of Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications. The ISSE will perform in a consultant like role providing technical knowledge, expertise

Jr. Linux System Administrator (TS/SCI)

Maxar Technologies Holdings Inc

Herndon, Virginia, USA

Full-time

Please review the job details below. Maxar is currently seeking a Jr. Linux System Administrator to join our team. This role will be performed in our Maxar facility located in Herndon, Virginia. As a Maxar team member, you will have the opportunity to closely support our mission partners, and your work will have a direct impact on mission imperatives. In this role, you'll work as part of our infrastructure team and you will work closely with our software development DevOps and cybersecurity tea

Cyber Security Systems Engineer

Lockheed Martin Corporation

Kirtland Air Force Base, New Mexico, USA

Full-time

Job Description What We're Doing: At Lockheed Martin Rotary and Mission Systems (RMS), we are driven by innovation and integrity. We apply the highest standards of business ethics and visionary thinking to push the boundaries of what's possible. As a Lockheed Martin employee, you will have the opportunity to contribute to groundbreaking projects that shape the future of Aerospace and Defense. We value your skills, training, and education, and we are committed to providing a supportive environm

Cloud Cybersecurity Subject Matter Expert

Decisionpoint Corporation

US

Full-time

Overview DecisionPoint Corporation is seeking a highly skilled Cloud Cybersecurity Subject Matter Expert (CC SME) to provide comprehensive cyber leadership across a large-scale Department of Defense program supporting secure outreach, IT operations, and data systems. The CC SME will oversee cloud cybersecurity engineering and ensure full compliance with federal security frameworks, leading efforts related to risk management, incident response, vulnerability mitigation, and secure system integrat

Senior Specialist, Cyber Intelligence

Harris Corporation

Nebraska, 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

Alternate Information System Security Officer

Cayuse Holdings, LLC

Arlington, Virginia, USA

Full-time

Overview The Work The Alternate Information System Security Officer (AISSO) is responsible for providing support to senior ISSOs for implementing, and enforcing information systems security policies, standards, and methodologies and assist with preparation and maintenance of documentation. Assist in the evaluation of security solutions to ensure they meet security requirements for processing classified information. Assist with the CM for information system security software, hardware, and firmwa

Senior Staff Consultant

Credence Management Solutions

Scott Air Force Base, Illinois, USA

Full-time

Overview At Credence, we support our clients' mission-critical needs, powered by technology. We provide cutting-edge solutions, including AI/ML, enterprise modernization, and advanced intelligence capabilities, to the largest defense and health federal organizations. Through partnership and trust, we increase mission success for war-fighters and secure our nation for a better future. We are privately held, are repeatedly recognized as a top place to work, and have been on the Inc. 5000 Fastest G

Specialist, Info Security Systems Engineer Secret - Clifton, NJ/Palm Bay, FL/Plano, TX

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

Information Systems Security Officer (ISSO) - Andover, MA

RTX Corporation

Andover, Massachusetts, USA

Full-time

Date Posted: 2025-07-15 Country: United States of America Location: MA101: Andover MA 350 Lowell St Essex 350 Lowell Street Essex, Andover, MA, 01810 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 At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation

Digital Signal Processing (DSP) Engineer - TS/SCI with Poly

Leidos

Las Cruces, New Mexico, USA

Full-time

Leidos is seeking a highly skilled Digital Signal Processing (DSP) Engineer with an active Top Secret/SCI clearance with Polygraph to support rapid-response research and development (R&D) in various secure laboratory environments, focusing on mission-critical SIGINT and RF collection challenges. This role involves leveraging in-depth expertise in developing prototype solutions to exploit digital signals from overhead SIGINT and other RF collection sources, tailoring tools and techniques to prose

Specialist, Cyber Intelligence (ISSO)

Harris Corporation

Rochester, New York, 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 Information Systems Security Officer 15k Sign on Bonus

Leidos

Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a Senior Information Systems Security Officer (ISSO) 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 Leidos Pay and Benefits, including 4 or more weeks Paid Time Off,

Information Systems Security Officer - 15k Sign on Bonus!

Leidos

Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a Senior Information Systems Security Officer (ISSO) 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 Leidos Pay and Benefits, including 4 or more weeks Paid Time Off,