Expert Systems Engineer - TS/SCI with Polygraph Required
$114.11k - $203.11kLMI Government Consulting
Overview LMI currently has three opportunities for Expert Systems Engineers to support an Intelligence Community customer in the northern Virginia area. The ideal candidate will serve in a full-time client facing role as an Expert Systems Engineer for an Intelligence Community (IC) client specializing in application development and maintenance with application instances in the cloud environment. The candidates will demonstrate polished skills in programming and execution while managing and configuring the cloud environment for optimal usage. Lastly, candidates will provide engineering support in tracking hardware devices and software licenses for stand‑alone tablets and other peripheral devices. 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 Perform tasks similar to the following, or maybe required to perform additional tasks as assigned by the client. Demonstrated experience working in Linux environment including working with the Linux terminal Demonstrated experience creating and updating images for tablets for anti‑virus and operating system updates and re‑baselining tablets before re‑use. Demonstrated experience supporting and maintaining hardware inventory levels to include assisting with the research and procurement of the next generation of tablets, printers, and any other peripheral items required to support tablets for training classes. Demonstrated experience providing support in tracking hardware devices and software licenses for stand‑alone tablets. Qualifications Have the following required skills, certifications and demonstrated experience: Demonstrated experience of client systems. Demonstrated experience with maintaining web servers Demonstrated experience with IIS and Nginx Demonstrated experience with General server and Storage (S3) volume management and backups within AWS Demonstrated experience managing clusters, managing database users and permissions, and maintaining replication in MongoDB database management Demonstrated experience with, or a working knowledge of, authentication and authorization systems and standards Demonstrated experience with, or a working knowledge of, web security standards Demonstrated experience with, or a working knowledge of, network systems and protocols Demonstrated experience with, or a working knowledge of, the Sponsor’s security requirements for stand‑alone devices Active TS/SCI with polygraph required At least a Bachelors degree Demonstrated experience with Linux Other skills and demonstrated experiences that are highly desired but not mandatory to perform the work, include: Demonstrated experience with Unix scripting, Perl, Powershell, Python, Ruby, and similar technologies. Demonstrated experience with unicode and multilingual, multibyte languages and computing or similar technology. Demonstrated experience working with creation, maintenance, and implementation of needed workflows. Degree in Systems Engineering or a similar field. Target salary range: $114,108 - $203,112. Final compensation will be determined by a variety of factors including but not limited to your skills, experience, education, and/or certifications. The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances. Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work. #J-18808-Ljbffr LMI Government Consulting
$164.9k - $223.1k
Systems Engineer - Service Delivery for GDIT (McLean, VA) Seize your... ...process through SSJ, SOW, requirements, etc. products. Foster communication... ...program reviews, working with 3rd‑party vendors,... ...Security Clearance Level: TS/SCI with Polygraph Location: McLean, VA (On...SuggestedWork experience placement$142.79k
...Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT... ...Operations Skills: Operating Systems (OS), System... ...opportunity as a Systems Engineer with GDIT. A career in enterprise... ...role. Security Clearance: TS/SCI clearance and ability...SuggestedTemporary workSummer workWork at officeLocal areaRelocationFlexible hours- xmstart, inc is seeking experienced Systems Engineers to join their team in Chantilly, VA or Washington, DC. This full-time position requires 100% onsite work. The ideal candidates will have active TS/SCI with Polygraph and a Bachelor's Degree preferred. Responsibilities...SuggestedFull time
$114.11k - $203.11k
...Government Consulting is seeking an Expert Systems Engineer in McLean, Virginia. This full-time... ...an Intelligence Community customer with cloud application development. Candidates... ..., web servers, AWS management, and require an active TS/SCI security clearance. The target...SuggestedFull time$114.11k - $203.11k
LMI is seeking an Expert Systems Engineer to support Intelligence Community operations in McLean, Virginia.... ...web servers, and track hardware devices. Required qualifications include an active TS/SCI clearance, experience with Linux, web servers, and AWS solutions. The...SuggestedFull time- ...technology firm in Washington DC seeks a Systems Engineer knowledgeable in ISO/IEC15288... ...degree or equivalent experience, along with expertise in system engineering.... ...deliverables. A security clearance (TS/SCI FS Poly) is required at hire or if reactivated within two...
$159k - $215k
...Possess: Top Secret SCI + Polygraph Clearance Level... ...Public Trust/Other Required: None Job Family... ...personal impact as an AWS Systems Engineer supporting an... ...Demonstrated experience with server technologies and... ...community. Our 30,000 experts extract the power of...Temporary workWork experience placementImmediate startRemote workWorldwideFlexible hours- ...experienced IT Enterprise Architect or Systems Engineer to join our Bethesda-area team and... ...transition plan; collaborating with content providers, developers, and... ...; and fostering a culture of innovation. A TS/SCI clearance with polygraph is required. #J-18808-Ljbffr Peraton
- ...Job Description Job Description Expert Systems Engineer – TS/SCI FSP Department: Government Customer – Herndon Location: Herndon, VA ACTIVE TS/SCI CLEARANCE WITH FULL SCOPE POLY REQUIRED TO BE CONSIDERED FOR THIS POSITION Position Overview Provide...
- ...related to national security programs. The role requires a minimum of 8 years of experience, with specific experience in government budgeting and... ...Process. Candidates must hold a current TS/SCI clearance with Polygraph. The position offers competitive compensation and...
$260k
B4Corp is looking for a Software Engineer - Level 1 located in Bethesda, MD. This role requires top-secret (TS/SCI) clearance and offers a salary up to $260,000 per year. You... .... Candidate must have a master’s degree with significant experience or a doctorate. Benefits...- IntelliGenesis LLC® is seeking skilled professionals for a contract position in McLean, Virginia. The role requires U.S. citizenship and an active TS/SCI clearance with polygraph. Candidates should demonstrate experience in technical project analysis and requirements...Contract work
$164.38k - $212.75k
...Top Secret/SCI Clearance... ...Secret SCI + Polygraph Public Trust/Other Required: None Job... ...Information System Security, Risk... ...Cybersecurity Systems Engineer/Information... ...(ISSE) with GDIT. A... ...Asset (HVA), TS (SCI), Secret... .... Our 26,000 experts extract the power...Full timeTemporary workPart timeFor contractorsInterim roleSummer workImmediate startRemote workWorldwideRelocationFlexible hours$148.75k - $201.25k
...Intelligence Planner Expert Our work depends on an Intelligence... ...remains synchronized with the most critical National Defense... ...Theater plans and emerging requirements. Expert Policy Guidance:... ...Need To Succeed Active TS/SCI w/ polygraph US Citizenship Required...Permanent employmentContract workTemporary workFor contractorsImmediate startRemote workWorldwideFlexible hoursShift work- ...meet critical mission requirements in the areas of Data... ...Software Development, Engineering, Targeting and... ...reliable partnerships with our customers and industry... ...modernization initiatives Ensure system availability,... ...an active/current TS/SCI with Polygraph clearance. Equal...
$164.38k - $274.52k
...Systems Engineer SME (TS/SCI with Poly Required) Job Category: IT Infrastructure and Operations Requisition Number: SYSTE002097 Posted: May 7, 2026 Employment... ...Citizen and requires an active/current TS/SCI with Polygraph clearance. Equal Opportunity Employer / Individuals...Full timeWork experience placementFlexible hours- ...seeking an Incident Response Expert III to join a client in... ...actions. The role requires developing technical... ...and collaborates closely with internal stakeholders across... ...Requirements Active TS/SCI clearance with Ability... ...Understanding of system and application security...
- CWMD Subject Matter Expert (SME) for DAF/A10 - Active TS/SCI Required Job Locations US-VA-Arlington Job ID 2026-140... ...demonstrates competency in working with US Air Force headquarters‑level... ...ready Airmen and mission‑critical systems, DAF is tasked with fully developing...Full timeWork at officeLocal areaFlexible hours
- ...for the Cyber Subject Matter Expert, TS/SCI role at Blue Sky Innovators... ...operational cyber mission execution, with a strong emphasis on... ...&E efforts with operational requirements. Evaluate emerging... ...set job alerts for “Software Engineering Specialist” roles. Washington...Full time
$150k - $250k
...AT) Subject Matter Expert - Policy & Integration (Mid‑Level), TS/SCI Arlington, VA... ...site) Clearance: TS required (SCI eligibility required... ...professional with a strong policy... ...strategy, policy, and engineering . The successful... ...Tamper concepts and system implementations...- ...national security program requiring advanced cybersecurity... ...mission-critical systems. This role ensures alignment with Department of Defense (... ...Responsibilities Provide expert-level cybersecurity advisory... ...programs. Active TS/SCI with Polygraph required. U.S. Citizenship...Full time
- ...for you, as our nextTS/SCI cleared Systems Engineer,to play a critical role with design, engineering, development... ...high priority requirements from the product roadmap... ...MD Security Clearance TS/SCI Responsibilities... ...maintain a TS/SCI with Polygraph. Software development...Contract workFor contractorsRemote workFlexible hours
$148.8k - $306.5k
...in Arlington, Virginia, is seeking a Systems Engineer to support their Client platform.... ...Responsibilities include translating customer requirements into system designs, developing... ...in systems engineering, along with an active TS/SCI security clearance. Competitive compensation...Local area- ...looking to fill a Windows Systems Engineer and Administrator... ...Center (NMEC). This role requires an individual with subject matter... ...certification) Clearance Active TS/SCI clearance Active CI Polygraph or willing to obtain... ...Certified Solutions Expert (MCSE) or MCSA (...Shift work
- Space Systems Integration LLC is looking for a dedicated Space Systems Cybersecurity Engineer to join their Arlington, VA team. In this key role, you will integrate cybersecurity... ...in relevant domains, alongside an active TS/SCI security clearance. Expect a collaborative...
- Senior Systems Engineer (Hybrid) - TS/SCI Xcelerate Solutions is seeking a highly skilled... ...tasks to include requirements analysis, feature, system... ...testing, as well as working with the SE team in support of... ...to obtain and maintain a Polygraph. Experience with creating...Contract workRemote workFlexible hours
- B4Corp is seeking a Systems Engineer in McLean, VA, with a Top Secret (TS/SCI) Clearance. The position focuses on testing applications deployed on AWS, requiring experience in QA fundamentals, automation frameworks, and CI/CD pipelines. The ideal candidate will have strong...
- ...firm is seeking an Identity, Credential and Access Management Systems Engineer in Arlington, VA. The ideal candidate will have a TS/SCI clearance, a background in information technology, and experience with ForgeRock. Responsibilities include deploying and maintaining...Full time
- ...Consulting is seeking a C4I / Order of Battle Analyst to support DoD/IC clients at the DIA HQ in Washington, DC. Active TS/SCI with polygraph willingness required. 6+ years of all-source analysis experience or equivalent combination with education. Role entails producing...
- ...produce high-quality products for senior officials, and possess excellent communication skills. The position requires an active TS/SCI clearance and involves working with the military and strategic planning documents. This is a critical role for contributing to the...
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Expert Systems Engineer - TS/SCI with Polygraph Required. Be the first to apply!
- fulfillment expert Mc Lean, VA
- technology expert Mc Lean, VA
- guest service support expert Mc Lean, VA
- advanced systems engineer Mc Lean, VA
- distributed systems engineer Mc Lean, VA
- microsoft systems engineer Mc Lean, VA
- computer system validation engineer Mc Lean, VA
- mission system engineer Mc Lean, VA
- senior staff systems engineer Mc Lean, VA
- software system engineer Mc Lean, VA

