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20 software systems engineer jobs found

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LMI
Oct 27, 2026
Information Systems Security Engineer (ISSE)
LMI Remote, UNAVAILABLE
Overview LMI is seeking an Information System Security Engineer (ISSE) to design, implement, and validate security controls for Amazon Web Services (AWS) infrastructure and mission applications supporting Department of War mission partners. The ISSE will engineer secure solutions across development, deployment, and operations.   This hands-on role focuses on security architecture, hardening, AWS cloud and container security, automation, vulnerability remediation, and technical testing. The ISSE will work with engineers, the Information System Security Manager (ISSM), and the Information System Security Officer (ISSO) to implement controls and provide evidence supporting authorization and continuous monitoring.   This remote position requires an active Secret security clearance. Periodic travel may be required for integration, assessments, customer meetings, and access to approved facilities. All classified work must be performed in approved facilities....
LMI
Oct 26, 2026
Full time
DevSecOps/Cloud Engineer - Clearance Required
LMI Fort Belvoir, VA
Overview LMI is seeking an experienced Cloud Engineer with strong DevSecOps expertise to support a U.S. Army enterprise program. This role will design, build, and operate in a secure cloud infrastructure and CI/CD pipeline environment that power mission-critical Army systems and platforms. This position will be accountable for the availability, security, and performance of the environments the Army's teams rely on to support their enterprise systems.   This position requires an active Secret security clearance and an onsite presence at Fort Belvoir, VA.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.     Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic...
LMI
Oct 21, 2026
Full time
Cybersecurity Information System Security Engineer - Clearance Required
LMI Detroit, MI
Overview LMI is seeking a skilled Senior Cybersecurity Information Systems Security Engineer (ISSE) to support US Army  Portfolio Acquisition Executive (PAE) Maneuver Ground office in Detroit, MI . The ISSE will drive efforts that support software and hardware cybersecurity Risk Management Framework (RMF) Authority to Operate (ATO).     LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.   Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and...
SAIC
Oct 14, 2026
Senior Systems Engineer
SAIC VA
Description SAIC is currently hiring a System Engineer at Ft Belvoir, VA. Job Duties : Support the modernization and integration of the Intelligence Foundation layer aligning sensors, data, and analytics with command requirements of the US Army Intelligence and Security Command (INSCOM) needed to execute Multi-Domain Intelligence. Maintain responsibility for assessment and estimation of gap analysis, requirements, development, test, and deployment of products and systems. Work closely with customers, senior leadership within programs, and other systems engineers and development engineers to comprehend customer objectives and requirements and develop solutions from the conceptual stage through delivery and field deployment. Comprehend customer objectives, CONOPS, and requirements and translate those requirements into an executable development plan. Responsible for overseeing system definition and implementation in support of an overall system architecture for...
SAIC
Sep 23, 2026
Senior Network Engineer
SAIC CO
Description SAIC seeks a highly experienced and energetic Network Engineer to support the US Space Force, Space Systems Command, in performing operational maintenance and sustainment of ground-based radars critical to US and Allied strategic missile surveillance, warning, defense, and space surveillance missions in Colorado Springs, Colorado. In support of the government customer, the SAIC Program Manager, and the Chief Engineer, the Network Engineer is responsible for responsive and coherent planning, development and delivery of PARCS and UEWR radar network maintenance and modifications in response to change requests and deficiency reports. Job Duties: Provides expert knowledge for maintenance and upgrade of networks including servers, routers, switches, firewalls, remote access systems, and telecom equipment. Provides expert knowledge for maintaining network integrity and connectivity while ensuring compliance with policies and maintains system backup and recovery...
LMI
Sep 05, 2026
Full time
DevSecOps Engineer - Clearance Required
LMI Remote, UNAVAILABLE
Overview LMI is seeking a highly skilled DevSecOps Engineer to support Army Acquisition, Training, and Readiness (AT&R) in the sustainment and enhancement of the Army Contract Writing System (ACWS). ACWS is built on the Appian Platform. This position will enable secure, repeatable delivery by designing and maintaining CI/CD pipelines, automating infrastructure provisioning, integrating security controls, and supporting scalable cloud and containerized environments. The ideal candidate is comfortable working across development, infrastructure, and cybersecurity disciplines and can translate evolving requirements into clean, scalable, secure technical implementations while supporting an Agile delivery environment. LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal...
SAIC
Sep 02, 2026
Information Systems Security Engineer (ISSE) Edge
SAIC VA
Description SAIC is seeking two experienced Information Systems Security Engineers (ISSEs) to support the MAJESTIC Joint Program Office (JPO) -one serving as a traditional enterprise ISSE and one serving as a specialized Edge ISSE focused on tactical-edge environments. Together, these engineers will lead advanced security engineering and architecture efforts for MAJESTIC's mission-critical systems, including those operating in distributed, low-bandwidth, intermittently connected, and operationally constrained mission scenarios. The Enterprise ISSE will design, develop, implement, and validate security architectures for MAJESTIC's core systems and enterprise environments, ensuring security controls are integrated throughout the full engineering lifecycle-from requirements and high-level architecture through deployment, sustainment, modernization, and ATO maintenance. The Edge ISSE , leveraging the job functions described in ISSE_Edge, will engineer cybersecurity...
SAIC
Sep 02, 2026
Information Systems Security Engineer (ISSE) Architect
SAIC VA
Description SAIC is seeking an experienced Information Systems Security Engineer (ISSE) to support the MAJESTIC Joint Program Office (JPO) by performing advanced security engineering and architectural design for mission-critical IT systems. In this role, the ISSE will lead the design, development, implementation, and validation of security architectures , ensuring all security controls are integrated into system engineering processes across the full lifecycle-from requirements development to deployment and sustainment. The ISSE will collaborate closely with program leadership, system owners, developers, ISSMs/ISSOs, enterprise architects, and cybersecurity operations teams to ensure systems meet federal security requirements, including NIST 800-53, RMF, and customer-specific A&A frameworks such as ICD 503 and DAAPM. This role requires on-site support in Springfield, VA . Key Responsibilities: Design and engineer secure system architectures, integrating...
General Dynamics Mission Systems, Inc
Jun 10, 2026
Linux Integration and Test Engineer
General Dynamics Mission Systems, Inc San Antonio, TX
Basic Qualifications Master's degree, plus 6 years of relevant experience. Bachelor's degree in a specialized area or equivalent relevant experience is required; plus, a minimum of 8 years of relevant experience.   CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Job Opportunity: Linux Integration and Test Engineer at General Dynamics Mission Systems Position Overview: Join our team to help create mission-critical systems that keep people safe. As a Linux Integration and Test Engineer, you'll play a crucial role in configuring, troubleshooting, and ensuring the seamless integration of...
General Dynamics Mission Systems, Inc
Jun 06, 2026
Information Assurance Engineer
General Dynamics Mission Systems, Inc Scott Air Force Base, IL
Basic Qualifications Bachelor's degree in Engineering, or a related Science or Mathematics field, plus a minimum of 2 years of relevant experience; or Master's degree, plus 6 months relevant experience.   CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position   What You’ll Experience: Hands-on work with the  system development life cycle  and  Risk Management Framework (RMF) . Implementing  Security Technical Implementation Guides (STIGs)  and running security assessments of a mission critical system. Building RMF documentation, including security plans, testing plans, and compliance...
General Dynamics Mission Systems, Inc
May 26, 2026
Digital Design Engineer
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Bachelor's degree in Electrical or Computer Engineering, or a related Science, Engineering or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree plus a minimum of 3 years of relevant experience.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Duties and Tasks: Design of digital electronics including Field Programmable Gate Array (FPGA) development and circuit design Responsible for definition, design, verification and documentation Determines architecture, system simulation, and detailed design approach Defines module...
General Dynamics Mission Systems, Inc
May 06, 2026
Sr. Advanced FPGA/Firmware Engineer
General Dynamics Mission Systems, Inc Middletown, RI
Basic Qualifications Bachelor's degree in Electrical or Computer Engineering, or a related Science, Engineering or Mathematics field, plus a minimum of 8 years of relevant experience; or Master's degree plus a minimum of 6 years of relevant experience.   CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position As a  Sr Advanced FPGA/Firmware Engineer  for the Torpedo Systems Group, you will work with engineering teams to develop, deliver, and maintain software and firmware products. Additionally, you will be the government customer onsite and frontline engineering...
General Dynamics Mission Systems, Inc
Apr 27, 2026
Embedded Software Engineer (cleared)
General Dynamics Mission Systems, Inc Scottsdale, AZ
Basic Qualifications Bachelor's degree in Software Engineering, or related Science, Technology, Engineering or Mathematics field, plus a minimum of 8 years of relevant experience; or Master's degree, plus 6 years relevant experience.   CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a Senior Embedded software engineer for Secure Voice Products, you’ll be a member of a cross functional team responsible for developing security software for cutting-edge secure voice products.   We encourage you to apply if you have any of these preferred skills or...
General Dynamics Mission Systems, Inc
Apr 14, 2026
Senior Systems Engineer
General Dynamics Mission Systems, Inc Scottsdale, AZ
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position We are seeking a Systems Security Engineer who has experience in the design and development of NSA-certified Cybersecurity devices.     Key Responsibilities: Design and develop specifications for mission-critical NSA-certified Cybersecurity devices...
General Dynamics Mission Systems, Inc
Mar 02, 2026
Systems Engineer
General Dynamics Mission Systems, Inc MD
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: Ability to obtain a Department of Defense Secret security clearance is required at time of hire.d Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position As a Systems Engineer, you will work alongside a team of highly talented hardware and software engineers to build new technologies to counter threats of tampering, reverse engineering, and supply chain exploits.   What You’ll Get to Do:...
QED Systems, LLC
Oct 27, 2026
ICIDS Fielding Coordinator
QED Systems, LLC VA
QED Systems, LLC, is currently recruiting an ICIDS Fielding Coordinator, tojoin our team at Fort Belvoir, VA to support our Product Manager Force Protection Systems (PM FPS) contract. Duties: Scheduling & Logistics Coordination Coordinate end-to-end scheduling for site surveys and system installations across multiple physical locations and military installations. Determine resource allocation by strategically assigning field technicians and engineers to specific sites based on project timelines, technical skill sets, and location constraints. Develop daily and long-term deployment schedules specifying exactly who will go to which site and when, minimizing travel overhead and project downtime. Manage logistical timelines to ensure all personnel, specialized equipment, and system components arrive at the designated installation site concurrently. Project Tracking & Communication Serve as the primary point of contact between fielding teams, project managers,...
LMI
Oct 27, 2026
Information System Security Officer (ISSO)
LMI Remote, UNAVAILABLE
Overview LMI is seeking an Information System Security Officer (ISSO) to support the Robotics and Autonomous Systems (RAS) business unit and Department of War mission partners. The ISSO will maintain system security documentation, coordinate Risk Management Framework (RMF) activities, support Authority to Operate (ATO) packages, and track security controls, vulnerabilities, and remediation actions throughout the system lifecycle.   The ISSO will work with the Information System Security Manager (ISSM), government system owners, assessors, and engineering teams to keep authorization records aligned with deployed systems. The ideal candidate combines hands-on DoD authorization experience with the technical judgment to evaluate evidence, identify security gaps, and coordinate corrective actions.   This remote position requires an active Secret security clearance and the ability to obtain and maintain Top Secret if required by the assignment. Periodic travel...
LMI
Oct 06, 2026
Full time
Autonomous Systems Integrator - Clearance Required
LMI Tampa, FL
Overview LMI is seeking an Autonomous Systems Integrator with strong DoD networking expertise to support Autonomous Warfare Command staff. The Integrator designs, configures, and troubleshoots the logical networks and secure data connections that link autonomous platforms, control stations, mission software, cloud services, and tactical edge systems. The role translates operational needs into network architectures and integration plans, then works across government and industry teams to deliver reliable end-to-end connectivity and interoperability.   Networking is the primary technical discipline for this position, supported by practical software integration and cloud experience. The emphasis is on routing, virtual networks, segmentation, secure communications, application connectivity, and data exchange across mission environments, rather than primarily administering physical servers, switches, or network appliances. The ideal candidate combines hands-on...
Lockheed Martin
Aug 21, 2026
Cyber Systems Security Engineer
Lockheed Martin FL
Standard Job Description At Lockheed Martin's Rotary and Mission System's Cyber Resiliency organization, we are dedicated to engineering and deploying cutting-edge cyber defense solutions across our corporation. Our focus on cybersecurity is paramount to ensuring mission success for our customers, even in the face of evolving cyber threats. THE WORK As a member of our team, you will be involved in a variety of activities aimed at enhancing the cyber resiliency of the AFSOC ACTS program. This includes tasks such as: • Hardening operating systems, applications, and network devices • Conducting vulnerability scans • Continuous monitoring of the security posture of the system • Assisting with Government Certification Test and Evaluation (CT&E) and Vulnerability Testing • Implementing security updates and patches • Applying configuration changes to ESS and ACAS security tools • Providing support to maintain the Certification and Accreditation (C&A) of the system to...
Lockheed Martin
Jul 17, 2026
Cyber Security Engineer Senior (Represented)
Lockheed Martin Moorestown, NJ
Description: WHAT WE’RE DOING At Lockheed Martin's Rotary and Mission System's Cyber Resiliency organization, we are dedicated to engineering and deploying cutting-edge cyber defense solutions across our corporation. Our focus on cybersecurity is paramount to ensuring mission success for our customers, even in the face of evolving cyber threats. WHO WE ARE Lockheed Martin is driven by innovation, integrity, and a commitment to excellence. We believe in applying the highest standards of business ethics and visionary thinking to everything we do. As part of our team, you will collaborate with a cross functional team of technical professionals including software and systems engineers and radar operators to maintain the cybersecurity posture of the Space Fence Radar System. WHO YOU ARE We are looking for individuals who are passionate about cybersecurity and eager to contribute their skills and expertise to our mission. You should have demonstrable knowledge in...
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