Systems Security Engineer

Systems Security Engineer Jobs

28 jobs found

Today

Information Systems Security Engineer

Leidos Mountain View, CA

Mountain View, CA

Today

$131k - $237k/yr Full time Cybersecurity Operations Data Security Facilities Management

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Job Description

Leidos’ AEGIS program is seeking an Information Systems Security Engineer to support advanced cybersecurity engineering for NASA Advanced Supercomputing (NAS) systems and high-performance computing (HPC) environments. This onsite role in Mountain View, CA focuses on securing large-scale simulation and mission workloads by leading security planning, compliance execution, and risk-focused technical assessments.

The position requires deep expertise across security frameworks, HPC-specific architectures, and assessment and authorization activities. You will oversee System Security Plans (SSPs), coordinate remediation planning, and provide senior technical guidance to stakeholders working across systems engineering, networking, storage, and operations.

Responsibilities

Ensure the compliance and integrity of System Security Plans (SSPs) and related security artifacts with NASA and U.S. Government security requirements, including NPR 2810.1F, NIST 800-53/53B, FISMA, and NIST HPC Security Overlay guidance.
Act as a senior technical advisor on complex HPC security challenges, including hardening for MPI-based workloads, GPU/accelerator nodes, and high-speed fabrics such as InfiniBand and Slingshot, as well as performance-critical parallel filesystems.
Evaluate and recommend advanced security solutions that support HPC performance while maintaining robust cybersecurity protections for large-scale simulation workflows, mission operations, and research productivity.
Lead analysis and reporting for HPC-specific security data, including vulnerability assessments, risk evaluations, security telemetry, and compliance findings, providing actionable recommendations to Division and Branch leadership.
Oversee development, tracking, and remediation of Plans of Action and Milestones (POA&Ms) across HPC systems, coordinating resolution activities with systems engineering, networking, storage, and operations teams.
Lead complex compliance assessments for large-scale HPC environments, including high-speed interconnect configuration considerations, MPI-node exposure risks, GPU driver-level vulnerabilities, and HPC authentication and authorization workflows; present findings to NAS leadership.
Provide technical leadership and coordination to implement, enforce, and maintain compliance with Government cybersecurity policies, including NPR 2810.1F, NIST 800-53/800-53B, NIST SP 800-234, DHS directives, FIPS standards, OMB guidance, and FISMA requirements.
Coordinate senior technical expertise during NASA Assessment and Authorization (A&A) activities, including data calls, technical evaluations, control inheritance definitions, and documentation updates.
Lead credentialed and performance-aware vulnerability assessments across HPC environments, ensuring scanning methodologies accommodate GPU nodes, high-speed fabrics, and parallel filesystems without impacting mission-critical workloads; analyze findings and provide risk-based recommendations to NAS leadership and Information System Security Officials (ISSOs).
Evaluate and escalate potential or actual HPC security incidents to appropriate NAS or Agency personnel and support investigations with NASA SOC, Incident Response Teams, and NAS Management.
Lead technical Root Cause Analysis (RCA) and recommend corrective actions for complex HPC security issues, including system performance anomalies, distributed job failures, and vulnerabilities in parallel computing environments.
Provide technical guidance to help develop and refine cybersecurity policies, procedures, and guidelines so HPC computational, storage, networking, and data-analysis systems maintain NASA and federal security compliance.
Maintain current HPC cybersecurity expertise by evaluating emerging threats, technologies, and advisories from NASA, NIST, DOE, and industry sources; provide technical guidance on HPC risks such as accelerator vulnerabilities, MPI/RDMA protocol threats, and job-scheduler exploitation vectors.
Provide senior-level coordination and oversight of security compliance activities related to Section 508, Supply Chain Risk Management (SCRM), IPv6 adoption, and cybersecurity reviews for HPC IT acquisitions, including compute clusters, interconnects, accelerators, and data-storage hardware.
Lead vulnerability assessments and contribute to the design and enhancement of intrusion detection tools for advanced network architectures supporting HPC environments.

Requirements

Bachelor’s degree and at least 12 years of relevant experience in cybersecurity, information systems security, or a related technical discipline.
Demonstrated experience managing complex technical projects, coordinating cross-functional activities, and ensuring successful execution of cybersecurity initiatives.
Advanced technical knowledge of cybersecurity principles, security frameworks, risk management, and compliance requirements within complex IT environments.
Ability to independently prioritize, delegate, and oversee multiple concurrent projects while aligning with technical requirements, organizational priorities, and established timelines.
Demonstrated ability to provide technical leadership, mentor and develop team members, and coordinate workforce activities to achieve program objectives.
Strong analytical, problem-solving, and decision-making skills for evaluating complex technical challenges and recommending effective solutions.
Excellent collaboration and communication skills to work across multidisciplinary teams and engage technical stakeholders and leadership.
U.S. Citizenship required.
Ability to obtain and maintain a security clearance from Public Trust up to Top Secret, as required.

Technologies

NPR 2810.1F
NIST 800-53
NIST 800-53B
NIST SP 800-234 (HPC Security Overlay)
FISMA
InfiniBand
Slingshot
MPI
RDMA
GPU/accelerator nodes
Section 508
Supply Chain Risk Management (SCRM)
IPv6
FIPS standards
OMB guidance

Benefits

Health and Wellness programs
Income Protection
Paid Leave and Retirement

Compensation and Logistics

Location: Mountain View, CA (onsite)
Pay: USD 131,300 - 237,350 per year
Original posting date: October 21, 2026
FOR U.S. POSITIONS: subject to change based on business needs; job requisition reasonably anticipates remaining open for at least 3 days with an anticipated close date no earlier than 3 days after the original posting date

Securing Your Data

Leidos will never ask for payment-related information during the employment application process.
Leidos will never advance money as part of the hiring process.
Leidos will only communicate through emails generated by the Leidos.com automated system, not via free commercial services or WhatsApp/Telegram.
If an email requests payment-related or personal information, contact LeidosCareersFraud@leidos.com.

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1d ago

System Cybersecurity Engineer

HX5, LLC Colorado Springs, CO

Colorado Springs, CO

1d ago

Full time Cybersecurity Operations Cybersecurity Tools Incident Management

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Job Description

HX5, LLC is seeking a hands-on System Cybersecurity Engineer to support mission-critical systems from Petersen Space Force Base in Colorado Springs, Colorado. In this senior role, you will serve as a cybersecurity subject matter expert, integrating security across the system lifecycle while helping ensure systems remain secure, compliant, and operationally resilient.

Responsibilities

Conduct risk assessment and vulnerability management by identifying, evaluating, and prioritizing security vulnerabilities across the organization’s digital infrastructure.
Implement and maintain technical defenses to protect critical assets and secure infrastructure.
Monitor for potential threats and perform incident response actions to minimize impact and restore operations.
Support training and awareness by educating employees and customers on cyber risks, including required Government Training associated with the DET 5 and additional DET 5 training listed on the DET 5 myLearning page.
Ensure cybersecurity compliance with applicable requirements and regulations, including Annual Control Validations and cyber risk assessments.
Manage third-party risk by overseeing the security posture of vendors and partners to reduce potential vulnerabilities.
Register, review, and maintain system Ports, Protocols, and Services Management (PPSM) data, including ensuring boundary defenses such as firewalls and routers are configured to align with DISA PPSM Category Assurance List (CAL) requirements.
Identify and implement process improvements within an Agile Kanban construct to streamline the RMF lifecycle, including efforts to reduce bottlenecks in artifact collection and eMASS package processing.
Evaluate Engineering Change Proposals (ECPs) at the Engineering Review Board (ERB) level.
Perform early-stage Security Impact Analysis (SIA) to identify RMF control implications and ensure technical requirements for NCMC-ITW/AA and Legacy Space systems are met before development begins.

Requirements

One of the following education and experience combinations: 15 years directly related experience with proper certifications (as described in the functionally aligned job description), 8 years of which must be in the DoD; or Bachelor’s degree with 12 years of experience in the applicable technical/professional discipline (with 5 years in the DoD); or Master’s degree with 10 years of experience in the applicable technical/professional discipline (with 5 years of which
Hold DoD Manual 8140.03 / 8570.01-M baseline certification requirements for Information Assurance Technical (IAT) Level III or Information Assurance Management (IAM) Level II/III (e.g., CISSP, CASP+, CISM).
Hold or be actively pursuing security-related professional certifications within the GIAC family of certifications or CISSP, CISM, or CISA.
Provide proof of U.S. Citizenship or U.S. Permanent Residency.
Be able to complete a U.S. government background investigation.
Be able to obtain a Top-Secret clearance.
Be able to travel up to 25%, including air travel.

Technologies

Agile Kanban
RMF
eMASS
PPSM
DISA PPSM Category Assurance List (CAL)

Benefits

Medical/Dental/Vision Insurance
401(k) plan with Company Match
Paid Holidays
Paid Time Off
Parental Leave
Life Insurance
Tuition Reimbursement
Medical and Dependent Care Flexible Spending Accounts
Pet Insurance

Position type: Full-time. Expected hours: 40 hours per week with a flexible schedule Monday through Friday during core business hours.

Location: Colorado Springs, CO (onsite). Experience level: 10 years minimum. Education: Master’s degree.

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2d ago

Principal System Security Engineer (Cybersecurity)

Raytheon Tewksbury, MA

Tewksbury, MA

2d ago

$108k - $205k/yr Full time Data Security Information Security InfoSec

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Job Description

Lead cybersecurity system security engineering efforts to help protect Warfighter technology advantage through holistic security solutions.

Responsibilities

Coordinate cybersecurity activities across multidisciplinary engineering teams
Serve as a technical interface for cybersecurity matters with customers, program leadership, subcontractors, and other stakeholders
Develop plans and estimates; execute tasks; manage project tracking and reporting
Identify risks and support risk identification and mitigation planning
Ensure compliance with NIST Risk Management Framework (RMF) controls
Consult and assist program management with SSE architecture and related issues
Support development of bids and proposals
Define security development and testing efforts to implement security controls across networking devices, databases, operating systems, and hardware and software components
Integrate cybersecurity development activities across programs and teams
Develop top-level system requirements and flow down requirements and implementation concepts to subsystem
Understand and comply with DoD technology release and export licensing policies

Requirements

Typically requires a Bachelor’s Degree in Science, Technology, Engineering, or Mathematics (STEM) and 8+ years of prior relevant experience
Active and transferable U.S. Secret clearance required prior to start date
U.S. citizenship required (only U.S. citizens are eligible for a security clearance)
Experience in System Security Engineering, computer technology reverse engineering, anti-tamper, cybersecurity, or embedded security
Experience with NIST Risk Management Framework (RMF)
Experience in technical leadership

Preferred Qualifications

Implementation and business growth of SSE implementation throughout the entire life cycle
Experience delivering solutions that meet robust SSE systems security requirements
Cybersecurity certifications aligned to DoDD 8570/DoDD 8140 (examples listed: CISSP, GSLC, CEH)
Subcontractor management experience with SSE
Broad understanding of technology and working knowledge of DODI-S-5230.28
Strategic planning experience and U.S. Government contract proposal experience as an Information Assurance Engineer subject matter expert
Ability to demonstrate an exceptional degree of ingenuity, creativity, and resourcefulness
Excellent interpersonal skills and ability to interact positively with coworkers, suppliers, stakeholders, and customers
Experience contributing to team environments focused on developing creative solutions to technical problems, processes, IA controls, and maintaining certification and accreditation documentation

Technologies & Frameworks

NIST Risk Management Framework (RMF)
DoD technology release and export licensing policies
Networking devices
Databases
Operating systems

Security Clearance

Type: Secret (Current)
Status: Active and existing security clearance required on day 1
Eligibility: U.S. citizenship required

Location & Work Model

Onsite in Tewksbury, MA 01876, United States of America

Compensation

Salary range: USD 107,500 - 204,500 per year

Education

Bachelor’s Degree in Science, Technology, Engineering or Mathematics (STEM)

Benefits

Relocation assistance available
Medical, dental, vision
Life insurance
Short-term disability, long-term disability
401(k) match
Flexible spending accounts
Flexible work schedules
Employee assistance program
Employee Scholar Program
Parental leave
Paid time off
Holidays
Annual short-term and/or long-term incentive compensation programs (depending on level and coverage)

Job site requirement: Classified position; onsite employees work primarily onsite.

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3d ago

Optical Systems Engineer

Arete Boulder, CO

Boulder, CO

3d ago

$95k - $165k/yr Full time Data Analysis Data Processing Design Engineering

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Job Description

Arete is seeking an Optical Systems Engineer to design and build laser and optical systems. This full-time, exempt, non-supervisory role focuses on performance modeling and simulation, measurement planning and execution, and performance validation through analysis.

Location and Employment Details

Location: Boulder, CO (onsite)
Work setting: Full-time; exempt; non-supervisory
Role basis: Based in Niwot, CO
Salary: USD 95,000 - 165,000 per year

Core Responsibilities

Drive technical research for laser and sensor development programs
Manage proposals for pursuits of new science and technology business
Prepare calculations, models, and simulations to predict laser system performance
Analyze collected experimental data to assess laser system performance
Develop laser and optical system specifications
Collaborate with manufacturing and engineering staff to support design
Assemble, align, and test lasers and optical system systems
Document designs, procedures, and performance
Design optical fixturing and tests to support alignment, construction, and performance verification
Inspect optical component and systems
Prepare and present technical briefings
Participate in design reviews and maintain documentation of resulting system design
Prepare electrical and optical hardware for demonstrations and experiments
Plan and execute field tests and demonstrations of prototype hardware electro-optical systems and components
Support proposal preparation for new technical work
Serve as principal investigator for DoD research and development projects, including submission of technical proposals
Perform additional duties as assigned

Required Qualifications

Proficient theoretical understanding of laser physics, optics, and design approaches
Demonstrated capability in hardware build and test
Experience in the execution of DoD funded research and development programs
Appreciation of technical and business constraints for development projects
Intellectual curiosity and desire for continuous learning
Entrepreneurial mindset
Quickly understands overall project objectives and selects best suited solutions
Skilled and innovative problem solver
Works well independently and as part of a team
Strong work ethic and detail oriented approach
Inquisitive, with the ability to provide critical review of technical work by peers
Responsive to technical questions and review from peers and technical management
Comfortable adapting to a wide variety of roles supporting different laser, lidar, and optical system development projects
Proficient use of MS Office (Word, PowerPoint, Excel)
Proficient operation of standard electrical and optical test equipment (oscilloscopes, signal generators, laser sources, spectrometers, detectors, etc.)
Proficient in Matlab, Mathematica, Python, or other scientific computing language
Basic understanding of optical detectors and radiometry
Capable of developing models and simulations of laser dynamics to support optical designs
Capable of developing code to process collected sensor data
Ability to independently research literature to fill knowledge gaps as needed

Relevant Technologies

MS Office (Word, PowerPoint, Excel)
Matlab, Mathematica, Python
Oscilloscopes, signal generators, laser sources, spectrometers, detectors

Benefits

Medical, Dental & Vision Insurance
Life and Long-Term Disability (LTD)
Vision Reimbursement
Fitness Reimbursement
Company-funded 5% contribution to your 401(k) retirement plan
Company-funded 5% contribution to your Employee Stock Ownership Plan
Continuing Education Assistance
Flexible Scheduling
Paid Time Off (PTO)
Paid Parental and Bereavement Leave

Preferred Skills (Nice to Have)

Remote sensing systems (visible, IR, lidar)
Solid state laser development experience
Experience with COMSOL, Zemax, Ansys, Solidworks, CREO, or other design software
Familiarity with Structural Thermal Optical Performance (STOP) analysis workflows
Active security clearance

Additional Eligibility and Compliance Information

U.S. citizenship is required to meet position eligibility.
Successful passage of a criminal background screen is required to meet position eligibility.
Selected applicants will be subject to a government security investigation and must meet eligibility requirements for access to classified information.
Areté will consider qualified applicants with criminal histories in a manner consistent with the requirements of the Los Angeles Fair Chance Initiative for Hiring.
Successful passage of a Department of Transportation (DOT) drug test is required to meet position eligibility.
Qualified individuals with a disability or disabled veterans may request an accommodation if unable or limited in accessing the website; contact Areté Human Resources at 818-885-2200.

Salary Range by Level

Engineer 2: $95,000 - $120,000 (required BS +2/MS degree or higher)
Staff Engineer: $115,000 - $140,000 (experience of BS+5 years, OR MS+3 years)
Senior Engineer: $135,000 - $165,000 (experience of BS+9 years, MS+7 years, or PhD+4 years)

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6d ago

Systems Security Engineer

Bowhead Dahlgren, VA

Dahlgren, VA

6d ago

$110k - $135k/yr Full time Information Security InfoSec Security Testing

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Job Description

Bowhead is hiring a Systems Security Engineer (Cybersecurity/Quarantine Release) onsite in Dahlgren, VA.

Responsibilities

Run vulnerability scans and identify weaknesses across security systems
Use DoD network analysis tools (e.g., ACAS, HBSS) to detect vulnerabilities
Perform application vulnerability assessments
Analyze vulnerability and configuration data to identify systemic security issues
Provide insights on the organization’s threat environment to improve risk management posture
Apply cybersecurity and privacy principles to organizational requirements, including confidentiality, integrity, availability, authentication, and non-repudiation
Troubleshoot and diagnose cyber defense infrastructure anomalies and work through resolution
Conduct impact/risk assessments
Apply host/network access controls (e.g., access control list)
Protect networks from malware using controls such as NIPS, anti-malware, and measures to restrict or prevent external devices and reduce unwanted traffic (e.g., spam filters)
Perform other duties as assigned

Requirements

High School Diploma required; bachelor’s degree highly desired
3-5 years of relevant experience
Knowledge of computer networking concepts and protocols and network security methodologies
Knowledge of network security architecture, including topology, protocols, components, and defense-in-depth and zero trust concepts
Knowledge of basic system, network, and OS hardening techniques
Knowledge of Intrusion Detection System (IDS) and Intrusion Prevention System (IPS) tools and applications
Knowledge of network protocols including TCP/IP, DHCP (Dynamic Host Configuration), DNS, and directory services
Knowledge of application vulnerabilities
Knowledge of system administration and hardening for network and operating systems
Experience with operating system administration concepts for Unix/Linux, IOS, Android, and Windows
Must meet DoD 8570 Information Assurance Technical Level II certification requirements at time of hire
Must currently hold a Top Secret security clearance
US Citizenship required for Top Secret clearance at this location

Technologies

ACAS, HBSS
NIPS, anti-malware
Intrusion Detection System (IDS), Intrusion Prevention System (IPS)
TCP/IP, Dynamic Host Configuration, DNS
Unix/Linux, IOS, Android, Windows
Virtual Private Network (VPN), encryption
access control list
DoD network analysis tools
DoD 8570 Information Assurance Technical Level II certification requirements

Preferred Skills

Knowledge of cyber threats and vulnerabilities
Knowledge of operational impacts of cybersecurity lapses
Knowledge of host/network access control mechanisms such as access control list and capabilities list
Knowledge of cybersecurity and privacy principles and organizational requirements (confidentiality, integrity, availability, authentication, non-repudiation)
Knowledge of network traffic analysis methods
Knowledge of VPN security
Knowledge of transmission records (e.g., Bluetooth, RFID, IR, Wi-Fi, paging, cellular, satellite dishes, VoIP) and jamming techniques that enable undesirable transmission or prevent systems from operating correctly
Knowledge of network access, identity, and access management (e.g., public key infrastructure, OAuth, OpenID, SAML, SPML)
Knowledge of system and application security threats and vulnerabilities (e.g., buffer overflow, mobile code, cross-site scripting, PL/SQL and injections, race conditions, covert channel, replay, return-oriented attacks, malicious code)
Knowledge of classes of attacks (e.g., passive, active, insider, close-in, distribution attacks)
Knowledge of application security risks

Physical Demands

Ability to lift 10-20 pounds or more
Ability to stand and walk for prolonged amounts of time
Ability to twist, bend, and squat periodically

Salary: USD 110,000 - 135,000 per year

Location: Dahlgren, VA (onsite)

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6d ago

Sr. Cybersecurity Engineer

Solutions Development Corporation King George, VA

King George, VA

6d ago

Full time Senior Cybersecurity Requirements Cybersecurity Tools

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Job Description

Solutions Development Corporation is hiring a Sr. Cybersecurity Engineer for onsite work supporting combat system cybersecurity across multiple classification levels.

Responsibilities

Develop cybersecurity requirements, policy standards, best practices, and guidance and procedures for combat systems
Conduct cybersecurity research, analysis, and coordination activities supporting DoD cyber assurance and policy efforts across multiple classification levels
Lead working groups to create cybersecurity strategies addressing emerging threats
Analyze cybersecurity, intelligence, and information technology policy gaps for combat systems
Perform cybersecurity system engineering design, analysis, and documentation for combat systems
Develop cybersecurity risk assessment analysis and risk mitigation plans for combat systems
Create documentation spanning cybersecurity requirements, gap analysis, threat analysis, system engineering, risk assessment, and mitigation for combat systems
Develop and/or use MBSE models to support cybersecurity analysis

Requirements

Five (5) years program specific security engineering experience working with Navy afloat or tactical combat systems, or ten (10) years general security engineering experience
Understand cybersecurity and military system specifications, including DoD Information Assurance (IA) policies for both land based and afloat/tactical systems
Ability to communicate clearly and succinctly in written and oral presentations
Minimum certification of IAT Level II or higher per DoD 8570.01 or successor
CASP+ CE (renamed to SecurityX)
NQV would be nice

Technologies

MBSE
CASP+ CE (renamed to SecurityX)

Clearance

Must have TS
SCI strongly desired

Location

King George, VA (onsite)
NSWCDD, Dahlgren VA: On Base DC or Dahlgren area

Benefits

Multi Health Insurance plans offered
Health Savings Account with employer contributions
Dental and Vision Insurance, at no cost to you for both you and your dependents
Short & Long-Term Disability, AD/D and Life Insurance plus additional voluntary coverage options for yourself, your spouse/partner, and children/grandchildren
PTO and Holidays
Flexible schedules
401(k) program with Employer match
Flexible spending accounts for Medical and Dependent Care
Partnered with Aflac for additional voluntary coverage for life’s unexpected events

Certification Requirements

Minimum cert as IAT Level II or higher per DoD 8570.01 or successor
CASP+ CE (renamed to SecurityX)
NQV would be nice

Send resume to: info@sdc-world.com

See other openings at: https://www.sdc-world.com/Pages/Employment.aspx

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7d ago

Senior Associate, Systems Engineer

L3Harris Technologies Greenville, TX

Greenville, TX

7d ago

Full time Senior Engineering Information Technology (IT)

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Job Description

Senior Associate, Systems Engineer will support technical planning and integration activities in a Quick Reaction Capability (QRC) environment for total systems and subsystems.

Responsibilities

Translate the voice of the customer into system-level requirements.
Perform requirement traceability and verification testing.
Develop and evaluate trade studies for accuracy and completeness.
Evaluate alternative solutions and establish preliminary system designs.
Write subsystem specifications based on system-level requirements.
Understand physical architectures covering voice, video, and data capabilities across multiple security domains.
Create System Block Diagrams.
Review and evaluate electrical wiring diagrams to ensure design details trace to system requirements.
Interpret complex system ICDs to support new architecture designs.
Support test planning, integration, verification, and validation planning.
Write verification test procedures to confirm system performance and capabilities meet system requirements.
Communicate technical information through effective presentations for both technical and non-technical stakeholders.
Work effectively in a dynamic, fast-paced Quick Reaction Capability (QRC) environment.
Apply working knowledge of LAN and VOIP protocols, including IP routing.
Apply knowledge of mission systems such as EO/IR, Video, Networks, SI/EW, and Avionics Interfaces.
Troubleshoot and perform multi-level testing and analysis of electrical signal interfaces and RF systems.
Use requirement traceability methods and support the systems engineering trade study process.
Coordinate with subcontractors and U.S. Government customers.
Develop, author, and implement system test plans.
Support engineering efforts involving FAA-certified general category aircraft.
Perform other duties as assigned.
Travel up to 25% based on business needs after full training and role assimilation.

Requirements

Active DoD Secret security clearance.
Bachelor’s Degree with 2 years of experience with aircraft systems architecture design, integration, and/or ground and flight test certification.
Graduate Degree with 0–2 years of experience with aircraft systems architecture design, integration, and/or ground and flight test certification.
In lieu of a degree: minimum 6 years of experience with aircraft systems architecture design, integration, and/or ground and flight test certification.
Demonstrated 2+ years of hands-on experience with systems engineering, configuration, testing, integrating, and/or verifying software and/or hardware in a multi-domain mobile airborne datalink, video, voice, and data communication systems environment.