[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Leidos jobs](https://jobs.opennash.com/companies/leidos/) · [Search jobs](/search/) Leidos · Linthicum Heights, MD # Principal Cybersecurity Systems Engineer Linthicum Heights, MD Senior individual contributor $154,050.00 - $278,475.00 Security Listed on Leidos’s official careers site. Listed as of October 18, 2026. Check that it is still open and apply there. [Apply on Leidos’s careers site →](https://leidos.wd5.myworkdayjobs.com/External/job/Linthicum-Heights-MD/Principal-Cybersecurity-Systems-Engineer_R-00187412) [OpenNash Jobs](https://jobs.opennash.com/) / [Leidos](https://jobs.opennash.com/companies/leidos/) / Principal Cybersecurity Systems Engineer ## Job description Are you seeking a new and challenging position supporting a complex, mission-critical Program? Well, look no further! Leidos is currently looking to add a Sr. Systems Engineer to an Information Assurance Program near Ft. Meade, MD. The successful candidate will participate in the development/evaluation of system engineering documentation, such as System Engineering Plans, Initial Capabilities Documents, Requirements Specifications, security requirements and security testing documents. Provide technical support for the development, engineering, interfacing, integration, and testing of specific components of complex hardware/software systems to include requirements elicitation, analysis and functional allocation, conducting systems requirements reviews, and performing technical/non-technical assessments. Support the planning and test analysis of the DoD Certification/Accreditation Process (as well as other Government Certification and Accreditation (C&A) processes. ### Primary Responsibilities Perform cybersecurity high assurance evaluation activities to include reviews of security evaluation documents and other high assurance artifacts/documents for devices undergoing certification and assessment, to ensure devices meet security requirements. Attend and participate in relevant security-related meetings and reviews in an effort to translate vulnerability knowledge into guidance to prevent and/or manage risk. Clearly document security deficiencies found in the evaluation of artifacts and documents. Recommend requirement clarification and process/template improvement to mitigate security concerns. ### Qualifications 20+ years of System Engineering experience Bachelor's Degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university is required. Five (5) years of additional SE experience may be substituted for a Bachelor's Degree. Information Assurance/Cryptographic experience Excellent written and verbal communication skills a must Ability to work in a team environment and lead small teams Active TS/SCI with Poly Clearance required You Might Also Have: Experience in Space/Weapon/Ground/Terminal system development and or evaluation DoD Certification/Accreditation Process (as well as other Government Certification and Accreditation (C&A) processes. Experience in Space System Engineering conmd CABASAW If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. ### Original Posting July 15, 2026 For U.S. ### Positions While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. ### Pay Range Pay Range $154,050.00 - $278,475.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. ## At a glance - Posted by the employer: Not stated - First seen by OpenNash: Oct 11, 2026 - Last checked: Oct 18, 2026 - Listed for: 7 days - Location: Linthicum Heights, MD - Pay: $154,050.00 - $278,475.00[Apply on Leidos’s careers site →](https://leidos.wd5.myworkdayjobs.com/External/job/Linthicum-Heights-MD/Principal-Cybersecurity-Systems-Engineer_R-00187412) ## More jobs at Leidos ### [Cybersecurity Systems Engineer](https://jobs.opennash.com/companies/leidos/jobs/6999abdc8f84bda6f22f/) Linthicum Heights, MD ### [Artificial Intelligence (AI) Engineer (SWE-2)](https://jobs.opennash.com/companies/leidos/jobs/090ab56f875c03e1383d/) Linthicum Heights, MD ### [Senior AI Engineer (SWE-3)](https://jobs.opennash.com/companies/leidos/jobs/11ae7576dc787d58ae02/) Linthicum Heights, MD ### [(ISSO) Information Systems Security Officer](https://jobs.opennash.com/companies/leidos/jobs/531c15fece37c92f0178/) Hampton, VA ## Similar jobs at other companies ### [Cybersecurity Engineer - Principal](https://jobs.opennash.com/companies/huntington-bank/jobs/a5a1b9529f82aae87e09/) Huntington Bank · TX MI IL PA OH GA ### [Cybersecurity Systems Engineer (Level 1/2)](https://jobs.opennash.com/companies/northrop-grumman/jobs/764c58085c0646ac401b/) Northrop Grumman · United States-California-El Segundo ### [Cybersecurity Systems Engineer (Level 3/4)](https://jobs.opennash.com/companies/northrop-grumman/jobs/42c4e7821295c312c785/) Northrop Grumman · United States-California-El Segundo ### [Systems Engineer Principal – Lead Systems Engineer - Sign On Bonus](https://jobs.opennash.com/companies/bae-systems/jobs/657e2c9d99a45a32a818/) BAE Systems · Boulder, Colorado, United States ### [Systems Engineer Sr Principal – Chief Systems Engineer - Sign On Bonus](https://jobs.opennash.com/companies/bae-systems/jobs/500ef082f8a4f129959e/) BAE Systems · Boulder, Colorado, United States OpenNash lists jobs from employers’ own careers sites and does not handle applications. Dates come from the employer where stated; “first seen” and “last checked” are our own observations. OpenNash Jobs · Official listings with dates and links to the employer. [Weekly hiring report](/reports/hiring/) · [Methodology](/methodology/)