Systems Engineer

Systems Engineer (Modeler) – Ground-Based Radar Digitization (GBRD)

Location: Colorado Springs, CO

Make a Meaningful Impact at Leidos

At Leidos, we deliver innovative solutions through the dedication of our diverse and talented teams. We empower our people, support our communities, and operate with integrity and sustainability. Guided by our Mission, Vision, and Values, we are committed to doing what’s right—for our customers, our employees, and the world around us.

Your greatest work is ahead.

Leidos Defense Sector is seeking a Systems Engineering Modeler to support the Ground-Based Radar (GBR) Digitization Program, a major modernization initiative enhancing the nation’s missile warning, missile defense, and space domain awareness capabilities.

Mission Overview

In this role, you will support the modernization of legacy radar systems across eight Ground-Based Radar sites. These systems provide continuous surveillance, detection, tracking, and reporting of missile and satellite activity in support of Missile Warning (MW), Missile Defense (MD), and Space Domain Awareness (SDA) missions.

The GBR Digitization Program is implementing a common digital backend architecture and modernizing radar front-end systems to maximize standardization, improve maintainability, and enhance mission readiness across the enterprise.

What You’ll Do

• Model-Based Systems Engineering — Design, create, and maintain complex digital system models using SysML or UML to represent system architectures, requirements, behaviors, and interfaces.

• Architecture & Interface Modeling — Develop detailed architecture, behavior, and process models for radar back-end systems, algorithms, hardware, and software.

• Model-Based ICD Development — Author and maintain model-based Interface Control Documents (ICDs) and mapping frameworks to ensure interoperability across system components.

• Executable Models & Validation — Build executable models and automated validation suites to test system constraints and performance prior to physical prototyping.

• Scenario Thread Development — Support development of mission and operational scenario threads to inform system design and performance requirements.

• Digital Engineering Integration — Apply MBSE and Digital Engineering best practices to define the to‑be system design, including mission, cyber, interoperability, and environmental requirements. Work in CAMEO Enterprise Architect, providing model integration, branching, versioning, validation, audits and configuration control.

• Lifecycle Engineering Support — Contribute to system baseline development across the program’s three-phase contract: requirements definition, baseline establishment, and deployment of the modernized solution.

Basic Qualifications

• Bachelor’s degree in Systems Engineering, Information Systems, Computer Science, or related field and 4+ years of relevant experience (additional experience, training, or certifications may substitute for degree).

• US Citizen; Currently possesses an Active Secret Clearance.

• Demonstrated experience with Model-Based Systems Engineering (MBSE), Digital Engineering, Cameo, scenario thread development, system integration, configuration management, cybersecurity, test support, and CI/CD.

• Strong written and verbal communication skills with the ability to engage both technical and non‑technical stakeholders.

Preferred Qualifications

• Master’s degree in a related field with 2+ years of relevant experience.

• Professional certifications such as DoD IAT Level II (e.g., Security+).

• Experience supporting DoD, MDA, U.S. Space Force, Air Force, or Intelligence Community programs.

• Experience with Integrated Tactical Warning / Attack Assessment (ITW/AA) systems or radar systems.

• Experience with missile and space on‑orbit events, cybersecurity, classified networks, cloud solutions, operational acceptance governance, and system lifecycle management.

AMSOPP1

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:

June 30, 2026

Pay Range:

Pay Range $87,100.00 - $157,450.00

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