Senior Modeling Engineer - TS/SCI Polygraph Required

Leidos; Reston (VA); On-site; USD 131,000 - 237,000; Full time

Job summary

Leidos is seeking a Modeling Engineer to support national security missions for DTRA and DIA. You will develop high-fidelity 3D BIM models of complex facilities, integrate field LiDAR data, and manage cross-domain data across Unclassified to TS/SCI networks.

You will collaborate with analysts to support vulnerability and defeat assessments. The role requires active TS/SCI clearance and a strong background in BIM tools, point-cloud processing, and cross-domain workflows.

Qualifications

• Bachelor’s-level STEM degree with 12–15 years of relevant experience preferred.
• Active TS/SCI Polygraph clearance required, U.S. citizenship.
• Experience with BIM workflows and facility spatial analysis.
• Proficiency in multiple modeling tools listed above.

Responsibilities

• Build high-fidelity 3D BIM models of complex facilities and utilities.
• Lead 3D modeling, field surveys, and LiDAR data capture.
• Manage cross-domain data movement across classifications.
• Prepare data for blast/structural integrity and vulnerability analyses.
• Deliver technical briefs and 3D visualizations to DoD decision-makers.

Skills

3D BIM modeling

LiDAR field surveying

Cross-domain data handling

Spatial data integration

Field data processing

Education

Bachelor’s degree in civil/structural/mechanical engineering or GIS

Master’s degree preferred

Tools

Autodesk Revit

Navisworks

AutoCAD

SolidWorks

Bentley/OpenBuildings/MicroStation

Autodesk ReCap

Leica Cyclone

FARO Scene

CloudCompare

Job description

Description

Leidos is seeking a highly skilled Modeling Engineer to support critical national security missions for the Defense Threat Reduction Agency and the Defense Intelligence Agency. This position focuses on advanced structural modeling of complex facilities, critical infrastructure, and target environments to enable Countering Weapons of Mass Destruction and Hard and Deeply Buried Target vulnerability and defeat assessments.

The ideal candidate will bridge the gap between field-captured spatial data and high-fidelity analytical models. In this role, you will lead 3D Building Information Modeling efforts, manage cross-domain data movement between unclassified and classified networks, and perform field surveys using LiDAR and point cloud technologies.

Key Responsibilities

Structural and Infrastructure Modeling

• Build detailed, high-fidelity 3D BIM models of complex underground, hardened, and above-ground facilities, including structural framing, foundations, and critical utilities.
• Map complex system-of-systems connectivity, including structural dependencies, HVAC/MEP systems, communications, power, and operational equipment.
• Convert technical, operational, and intelligence data into precise spatial models to support blast, impact, structural integrity, and physical vulnerability simulations.

Reality Capture and Field Surveying

• Execute field data collection using terrestrial, aerial, and mobile LiDAR systems, handheld scanners, and photogrammetry tools.
• Process, clean, stitch, and georeference large point cloud datasets into actionable BIM environments using scan-to-BIM workflows.
• Participate in CONUS and OCONUS site surveys in dynamic environments to capture ground-truth physical characteristics.

Cross-Domain Data Handling and Architecture

• Manage model development across multiple classification levels, including Unclassified, Secret, and TS/SCI environments.
• Prepare, filter, and validate spatial and geometric data for high-to-low and low-to-high cross-domain transfer protocols.
• Maintain strict model security controls, ensuring attribution and metadata conform to Intelligence Community classification guidelines.

Mission Support and Threat Assessment

• Collaborate with weapon effects analysts, structural dynamicists, and intelligence specialists to support target vulnerability and defeat assessment pipelines.
• Quantify structural load paths, material properties, and failure modes under extreme loading conditions.
• Serve as a subject matter expert within the technical domain area.
• Deliver technical briefs, spatial analytical products, and interactive 3D visualizations to key Department of Defense decision-makers.

Required Qualifications

• Candidates for consideration must possess an in-scope and active TS/SCI Polygraph clearance and the ability/willingness to maintain this clearance while holding this position. U.S. Citizenship is required.
• In-depth understanding of technical principles, theories, concepts, and their application across a range of programs.
• Typically requires a bachelor’s degree in civil engineering, structural engineering, mechanical engineering, geographic information systems, or a related STEM field, and 12–15 years of relevant prior experience. A master’s degree is preferred.
• Relevant work experience includes structural or systems modeling, BIM workflows, and facility spatial analysis.
• Additional relevant experience may be considered in lieu of a degree.
• Proficiency with Autodesk Revit, Navisworks, AutoCAD, SolidWorks, Bentley Systems, including OpenBuildings or MicroStation, or other applicable modeling software.
• Hands-on experience with point cloud processing software, such as Autodesk ReCap, Leica Cyclone, FARO Scene, or CloudCompare.
• Direct experience conducting LiDAR scanning and photogrammetric site collections.

Preferred Qualifications

• Prior experience supporting DTRA, DIA, U.S. Strategic Command, or U.S. Special Operations Command counter-threat missions.
• Familiarity with Hard and Deeply Buried Target design concepts, underground engineering, or hardened structures.
• Background with cross-domain transfer platforms, including CDS tools, guard solutions, and data sanitization standard operating procedures.
• Understanding of finite element analysis or computational fluid dynamics modeling integration, such as Ansys or LS-DYNA.
• Knowledge of GIS platforms, including ArcGIS Pro, and CAD-to-GIS integration workflows.

#ASBA

#Snakehead

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

August 14, 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 $131,300.00 - $237,350.00

The Leidos pay range for this job level is a general guideline onlyand 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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay And Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

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If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.