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Job #: R-00102103
Location: Reston, VA
Category: Systems Engineering
Schedule (FT/PT): Full Time
Travel Required: Yes, 10% of the time
Shift: Day
Clearance: Secret
Referral Eligibility: Eligible
Referral Bonus Amount: $3,000
Group: Defense

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Job Description:

The Defense Group at Leidos currently has an opening for an experienced and motivated Digital/Systems Engineer to work in our Reston, VA office in a hybrid model.  This is an exciting opportunity to use your digital engineering experience and talent to support the development of modeling & simulation artifacts for research and development of Defense mission solutions. In this mission we will model and simulate multi-domain operations of tactical systems and network communications, define use cases, and use digital engineering to iterate on mission operation capability needs from requirements through design, and the development and testing of the HW and SW-based solution models that enable rapid information sharing and decision making in the mission.  You will engage in the architecture, requirements, design, development, testing, validation and verification of digital systems engineering models and simulations throughout the product development lifecycle of our digital systems engineering modeling and simulation R&D program.

Primary Responsibilities

  • Define and maintain MBSE projects in Cameo Systems Modeler / MagicDraw ver. 2021

  • Responsible for the development of MBSE-based SysML models, diagrams, and simulations

  • Support a digital engineering approach to iterate through architecture concepts and design of the system of systems

  • Model and simulate the system composition prior to the systems development and integration effort

  • Apply your MBSE talent using your SysML knowledge and past Cameo Systems Modeler / MagicDraw experience to model the systems architecture that satisfies operational mission needs

  • Support the systems architecture decomposition effort by defining requirements and allocation diagrams that derive from the envisioned systems architecture for the mission

  • Support the modeling of trade-studies (Analyses of Alternatives) that examine alternative system architectures and key technologies

  • Establish the design concepts, criteria and engineering artifacts for product research, development, integration, and test

  • Develop system block diagrams, use cases, activity, sequence, and state machines diagrams to describe the detail design, and model the behavior of hardware, software, and data of the system

  • Support the realization of the system of systems (product) through the development of validation and verification solution elements that confirm the modeled Mission capability

  • Support the use of Cameo Simulation Toolkit and the integration of the Cameo System Modeling Environment with third party co-simulation tools (i.e., MatLab) as needed

  • Adopt an agile Systems Engineering approach that establishes milestones, monitors adherence to the master plan and schedule, identifies and mitigates modeling problems and recommends solutions

Basic Qualifications

  • Bachelor's Degree in a STEM-related field, and 8 years of prior relevant experience in modeling and simulation or Master's with 6+ years of prior relevant experience

  • US Citizenship and active Secret Clearance (ability to clear for Top Secret)

  • MBSE modeling in Cameo Systems Modeler / MagicDraw

  • Expertise in the use of SysML and UML modeling language

  • Experience in Agile Systems Engineering and the Systems Engineering V-Model lifecycle

  • Experience supporting and participating in agile planning of Program Increments, Epics, Sprints, and Story boarding

  • Ability to follow and adhere to an agile Scrum/Kanban approach and use tools such as Jira and Confluence

  • Ability to work in small agile teams to research, develop and test new concepts and ideas

  • Ability to work, collaborate understand and communicate requirements and work products of other engineering disciplines (i.e., network, software, and security engineering)

  • Knowledgeable of change and configuration management principles and ability to implement and follow systems engineering, configuration/version control, and release management best practices

  • Qualified applicant will possess excellent communications, status reporting, demonstration, and team collaboration skills

  • Familiarity with DevSecOps and ability to work with other systems and software engineers through the entire product and SDLC lifecycle

Preferred Qualifications

  • Active DoD clearance (Top Secret preferred)

  • Previous experience modeling with Cameo Systems Modeler complex system designs

  • Experience with the use of the Unified Architecture Framework (UAF) and DoDAF

  • Familiarity with computer networks (LAN, WAN, MPLS), wireless networks (WiFi, 4G, 5G), and tactical communications networks and protocols (Link -16, VMF, USMTF, JREAP etc).

  • Ability to work across functions and with other domain teams to understand requirements, and successfully contribute in the delivery of models & simulations, and product development

Pay Range:

Pay Range $97,500.00 - $150,000.00 - $202,500.00

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.

About Leidos

Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. The company's global workforce of 47,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $15.4 billion for the fiscal year ended December 29, 2023.  For more information, visit

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 here.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

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 Diversity

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.

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