Senior Modeling Engineer - TS/SCI Polygraph Required

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

Job summary

Leidos Inc seeks a Modeling Engineer to lead 3D BIM modeling of complex facilities and to bridge field data with high-fidelity analytical models. You will guide LiDAR field surveys, manage cross-domain data transfers, and deliver spatial visualizations to DoD stakeholders.

The ideal candidate will have extensive BIM and LiDAR experience, with TS/SCI clearance and a strong background in structural or systems modeling. Reston/VA location; competitive pay.

Qualifications

• Active TS/SCI clearance with ability to maintain it while employed.
• U.S. Citizenship is required.
• 12–15 years of relevant prior experience; master’s degree preferred.
• Experience in structural or systems modeling, BIM workflows, and facility spatial analysis.
• Proficiency with major modeling software listed above.
• Hands-on LiDAR and photogrammetry experience.

Responsibilities

• Build detailed 3D BIM models of complex facilities including structural framing and utilities.
• Map system connectivity and HVAC/MEP, power, and equipment relationships.
• Convert operational data into spatial models for vulnerability simulations.
• Conduct field surveys using LiDAR, photogrammetry, and scanning workflows.
• Manage cross-domain data transfer across unclassified to TS/SCI networks.
• Deliver briefs and spatial visualizations to DoD decision-makers.

Skills

Structural modeling

BIM workflows

Field surveying

Cross-domain data handling

Technical briefs

Spatial data analysis

Geospatial data

Education

Bachelor's degree in Civil/Structural/Mechanical Engineering or GIS (Master's preferred)

Tools

Autodesk Revit

Navisworks

AutoCAD

SolidWorks

Bentley OpenBuildings

MicroStation

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

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.

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.