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30 information system security engineer jobs found

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Security Clearance LMI information system security engineer
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LMI
Mar 16, 2026
Information System Security Engineer (ISSE) AWS Cloud Security - Clearance Required
LMI NC
Overview LMI is seeking a skilled Information System Security Engineer (ISSE) with hands-on experience in AWS cloud security to provide advanced cybersecurity engineering and Risk Management Framework (RMF) support for Department of Defense (DoD) cloud-based systems. This position focuses on designing, implementing, and maintaining secure AWS environments aligned with DoD Cloud Computing Security Requirements Guide (CC SRG), NIST SP 800-53, and DISA STIGs/SRGs to support Authorization to Operate (ATO) efforts.   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,...
LMI
Apr 08, 2026
Army Information Systems Security Engineer (ISSE)
LMI Remote, UNAVAILABLE
Overview LMI, a consultancy dedicated to supporting government transformation and readiness, is seeking a skilled Information Systems Security Engineer (ISSE) to support the Naval Autonomous Data Collection System (NADACS) portfolio. Utilizing a blend of digital solutions, analytics, and security expertise, this role focuses on advancing mission success for the U.S. Army by providing robust system security engineering and cyber compliance solutions. Join LMI’s team and contribute to the secure deployment and modernization of NADACS—pivotal to U.S. Army operations and logistics. This role offers the chance to shape security processes, influence system compliance, and enable mission success through advanced cybersecurity solutions. Extensive collaboration and technical expertise are key for a security-first approach in protecting critical DoD systems. This position requires a  Secret clearance .   LMI is a new breed of digital solutions provider dedicated to...
LMI
May 21, 2026
Senior Software Test Engineer - TS Clearance Required
LMI Colorado Springs, CO
Overview LMI is actively seeking a skilled, experienced Senior Software Test Engineer to join LMI’s Space Market modeling and simulation (M&S) development team in Colorado Springs, CO. This role involves working directly with USSF and US Government customers, as well as analytical partners, to translate wargame, exercise, training, and analytic needs into responsive, high-performance software applications within LMI’s Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR ® .   The ideal candidate is adept at applying systems engineering principles in modern software environments, with strong understanding of software integration and testing, and familiarity with DevSecOps pipelines, CI/CD practices, and cloud-native architectures. Candidates should be comfortable working across disciplines to integrate and test modeling and simulation software in secure environments (both on-prem and cloud-based), collaborating closely with...
LMI
May 16, 2026
Cyber Engineer - TS/SCI with Polygraph Required
LMI McLean, VA
Overview We’re looking for a Cyber Engineer to help deploy, extend, and integrate LIGER, an enterprise AI platform that connects knowledge, systems, and agentic workflows to accelerate outcomes across federal missions. You’ll join a small, cross-functional team working directly with customers to get LIGER into production and build the features that make it stick.    Join our cutting-edge generative AI (GenAI) platform, LIGER™ , created by its technology studio, LMI  Forge . LIGER™ harnesses the power of advanced technology, data analytics, and the latest in machine learning and natural language processing to provide secure, private, and trustworthy GenAI solutions for government.   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....
LMI
May 16, 2026
Sr. Platform Engineer
LMI Washington, DC
Overview LMI, a trusted government contractor with decades of experience delivering cutting-edge solutions, is seeking a driven and innovative Platform Engineer to help build and extend IronGate, an ETL solution focused on moving data from commercial environments into secure environments. You’ll be an initial member of a small, cross-functional team maintaining this product on contract. This position requires the ability to obtain a clearance;  U.S. citizenship is required. This role requires quarterly travel for in person team planning and collaboration events.   This isn’t a maintain-the-backlog role. You’ll work across the stack, own features end-to-end, and help shape how this solution is built for long term success for our clients.   About This Team IronGate sits within LMI’s Chief Technology Office. We’re a small, high-visibility team building an ETL for federal agencies. The culture is more startup than traditional government contractor;...
LMI
May 14, 2026
Space Operations Software Engineer
LMI Colorado Springs, CO
Overview LMI is seeking a skilled Space Operations Software Engineer to support the Space Security and Defense Program (SSDP) Space Control Division (SCD) with development of resiliency, kill chain, and space systems modeling, simulation, prototyping, and analysis software to analyze proposed United States space architectures considered by SSDP, the Space Warfighting and Analysis Center (SWAC), and other related government partners. The applicant will work with SSDP and SWAC team members to understand the requirements of the architectures and the environment in which they will operate to be able to assess architecture resiliency against threats to the mission, using LMI’s RAPTR tool. In addition, the applicant may be required to develop new tools to assist with analysis.   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...
LMI
May 13, 2026
Model Based System Engineer
LMI Colorado Springs, CO
Overview LMI is seeking a Senior Model-Based Systems Engineer (MBSE) with deep expertise in SysML to support the development and representation of future space architectures, with a focus on sustained space maneuver and resilient orbital operations.   In this role, you will lead the creation of Model-Based Systems Engineering (MBSE) artifacts in SysML that translate conceptual architectures and analytical results into structured, interoperable system models. These models will support early-phase force design, architecture evaluation, and integration with external tools and analytical environments. This position is ideal for a systems engineer who can operate in ambiguous, concept-driven environments, and who excels at turning evolving ideas into coherent, defensible system models that inform decision-making.   This is an on-site role in Colorado Springs, CO and requires an active TS/SCI or TS with SCI eligibility clearance and a willingness to...
LMI
May 12, 2026
Sr. Platform Engineer
LMI Remote, UNAVAILABLE
Overview LMI, a trusted government contractor with decades of experience delivering cutting-edge solutions, is seeking a driven and innovative Platform Engineer to help build and extend IronGate, an ETL solution focused on moving data from commercial environments into secure environments. You’ll be an initial member of a small, cross-functional team maintaining this product on contract. This position requires the ability to obtain a clearance;  U.S. citizenship is required. This role requires quarterly travel for in person team planning and collaboration events.   This isn’t a maintain-the-backlog role. You’ll work across the stack, own features end-to-end, and help shape how this solution is built for long term success for our clients.   About This Team IronGate sits within LMI’s Chief Technology Office. We’re a small, high-visibility team building an ETL for federal agencies. The culture is more startup than traditional government contractor;...
LMI
May 08, 2026
Cybersecurity Engineer - Clearance Required
LMI Remote, UNAVAILABLE
Overview We’re looking for a Cybersecurity Engineer to support the secure deployment and continuous authorization of LIGER, an enterprise AI platform built for federal missions for a DHS customer. You’ll join a small, high-visibility team and own the security work that lets LIGER reach production, maintaining the ATO posture, driving vulnerability management, and partnering with cyber stakeholders to keep the platform compliant as it evolves. This position requires an active Secret clearance and the ability to obtain a CBP Background Investigation;  U.S. citizenship is required.   This is hands-on cyber engineering, not paper compliance. You’ll work alongside platform engineers, ISSOs, and the security team to harden deployments, validate controls, and resolve findings against real systems. If you want to do federal cybersecurity in an environment that ships fast and treats security as part of the product, keep reading.   LIGER sits within LMI’s...
LMI
May 08, 2026
Lead Platform Engineer - Clearance Required
LMI Remote, UNAVAILABLE
Overview LMI is seeking an experienced Lead Platform Engineer with an active SECRET clearance and minimum of 5 years of demonstrated experience to support a US Special Operations Command mission partner. This role involves working directly with US military and US Government mission partners, as well as other contracting partners, to develop-deploy-maintain cloud-based and on-prem digital & software solutions for the Warfighter.     The ideal candidate is adept at applying platform principles in modern software environments, with strong understanding of software integration/testing, strong familiarity with DevSecOps pipelines, CI/CD practices, and cloud-native architectures. Candidates should be comfortable working across disciplines in secure environments (both on-prem and cloud-based), collaborating closely with developers and other engineers.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact...
LMI
May 08, 2026
Data Engineer - Clearance Required
LMI Remote, UNAVAILABLE
Overview We are seeking a Strategic Data Engineer to support a critical Army mission by transforming complex technical data into actionable insights for senior leadership. You will be responsible for building automated data flows that map hardware and software interdependencies, identifying redundant requirements to drive program efficiency, and utilizing advanced modeling techniques to conduct "what-if" drills. The ideal candidate is a master of strategic storytelling; someone who can take deep-set technical data and use it to communicate investment trade-offs and resource needs to high-level stakeholders for our Army clients.   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...
LMI
May 08, 2026
Enterprise Data Engineer - Clearance Required
LMI Remote, UNAVAILABLE
Overview LMI is seeking an Enterprise Data Engineer with demonstrated experience designing and operating production data pipelines and analytics platforms to support a United States Special Operations Command (USSOCOM) mission partner. 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 outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen...
LMI
May 08, 2026
Cybersecurity Information System Security Officer (ISSO)
LMI Remote, UNAVAILABLE
Overview LMI is seeking a Cybersecurity Information System Security Officer (ISSO) with demonstrated experience managing the security posture of DoD information systems to support a United States Special Operations Command (USSOCOM) mission partner. 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 outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that...
LMI
Apr 07, 2026
Senior DevSecOps / Platform Engineer - Clearance Required
LMI Remote, UNAVAILABLE
Overview 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 outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.   The Opportunity We’re looking for a Senior DevSecOps / Platform Engineer with significant experience in AWS to help us build and support the core infrastructure that powers our Navy...
LMI
Apr 01, 2026
Product Support SME
LMI Wright-Patterson Air Force Base, OH
Overview 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 outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.   This role will support USAF acquisition logistics digital transformation utilizing cutting-edge technologies as well as streamlining and accelerating logistics processes using Agile methodologies....
LMI
Apr 01, 2026
Platform Engineer - Clearance Required
LMI Tysons, VA
Overview   LMI, a trusted government contractor with decades of experience delivering cutting-edge solutions, is seeking a driven and innovative Platform Engineer to support the deployment and maintenance of IronSled, a DevSecOps product tailored for government-authorized environments. IronSled accelerates software development and deployment in highly regulated environments by meeting stringent federal security requirements. The product streamlines accreditation processes for secure infrastructure within authorized government networks on cloud or on-premise systems. This position requires and active Secret clearance. This position can be performed remotely or hybrid (with occasional on-site work in government-authorized environments).    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...
LMI
Aug 04, 2025
Cybersecurity Engineer (DHS)
LMI Remote, UNAVAILABLE
Overview LMI is seeking a Cybersecurity Engineer to support our Department of Homeland Security (DHS) market.    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 outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value. Responsibilities Acquire and manage all necessary...
LMI
Jun 01, 2026
Database DevOps Engineer - Clearance Required
LMI Fort Belvoir, VA
Overview LMI is seeking a   Database DevOps Engineer to be part of a team that is designing and developing complex, cloud-based systems. This position requires an   Active Secret Clearance.   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 outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value....
LMI
May 22, 2026
Technical Advisor SME - Clearance Required
LMI Fort Belvoir, VA
Overview LMI is seeking a Technical Advisor SME who is a senior-level Subject Matter Expert (SME) in Information Systems to shape the strategic direction of new program implementing a SaaS solution that will impact the entire Army. This position requires Secret Clearance. This position can be performed in a hybrid remote capacity, with client site work at Ft. Belvoir 1-2 days a week. The ideal candidate bridges the gap between operators, engineers, and senior decision-makers -- equally credible briefing a general officer on capability roadmaps and challenging an engineering team on model architectures, implementation, and operational support.   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...
LMI
May 18, 2026
Forward Deployed Engineer - Clearance Required
LMI NC
Overview LMI is seeking a skilled Forward Deployed Engineer in the Fort Bragg, North Carolina region. Successful Forward Deployed Engineers demonstrate competency in integrating advanced technologies into existing business processes, building new functionality, ensuring successful software deployments, and working closely with customers. This role requires a combination of technical skills, strong communication, and the ability to quickly turn ideas into production caliber code. This role will work as part of the Sales Engineering team and engage directly with customers on-site, in a hybrid format, or remotely, as required by each customer including the potential for occasional short-term travel to customer locations across the United States. This position requires an active Secret clearance.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes...
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