Arlington, Virginia, United States · On-site
$108k–$195k/yr
Looking for an opportunity to make an impact? Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense G…
Skills: Model-Based Systems Engineering, SysML, Cameo, MagicDraw, NoMagic CSM
Arlington, Virginia, United States · On-site
$78k–$176k/yr
Program Operations Lead The Opportunity: To grow and transition effectively, organizations need help looking at their operation from the outside. Whether standing up a new organization, transforming an existing one, or t…
Skills: Change Management, Operational Analysis, Business Process Improvement, Stakeholder Management, Staff Product Development
Arlington, Virginia, United States · Hybrid
GenAI Adoption and Solutions Lead Function: GenAI Adoption, AI Solutions Enablement, Change Management, Stakeholder Engagement, and Government Technology Support Location: Remote, with ability to attend customer meetings…
Skills: Generative AI Adoption, Change Management, Stakeholder Engagement, Prompt Engineering, Workflow Automation
Arlington, Virginia, United States · On-site
$53k–$108k/yr
Foreign Clearance Program Specialist The Opportunity: To effectively operate globally, organizations need help looking at their operation from the outside. Whether standing up a new organization, transforming an existing…
Skills: Country Clearance Processing, Theater Clearance Coordination, Foreign Clearance Procedures, International Travel Reporting, Data Analysis
Arlington, Virginia, United States · On-site
$87k–$198k/yr
Nuclear Stockpile Stewardship SME The Opportunity: As an operations analyst, you’re passionate about exploring the root cause of an issue and then analyzing, reporting, and developing recommendations for a creative solut…
Skills: Nuclear Stockpile Stewardship, Nuclear Policy, National Security Strategy, Nuclear Weapons Physics, Interagency Collaboration
Arlington, Virginia, United States · Hybrid
$65k–$85k/yr
Company Description Work with Us. Change the World. At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work he…
Skills: Proposal Management, Adobe InDesign, Microsoft Word, PowerPoint, Adobe Acrobat
Arlington, Virginia, United States · On-site
$175k–$215k/yr
Umbra is an American space technology company delivering advanced systems, from sensors to spacecraft, that empower customers worldwide with unmatched access to critical information from space. Our mission is simple and …
Skills: Program Management, Government Contracting, Agile Development, Risk Management, Budget Forecasting
Arlington, Virginia, United States · On-site
$115k–$145k/yr
Responsibilities & Qualifications RESPONSIBILITIES Work alongside system administrators responsible for the Information Systems (IS) within the National Military Command Center (NMCC). Provide solutions based on system r…
Skills: VMware, Windows Server 2022, Windows Server 2019, Active Directory, Group Policy
Arlington, Virginia, United States · Hybrid
$140k–$155k/yr
Work Arrangement: Hybrid (1-2 days onsite per week) Clearance: Active Secret Foxhole Technology provides robust cybersecurity and IT support capabilities for federal civilian and defense agencies. A recognized leader in …
Skills: .NET, Java, ASP.NET Core, Spring Boot, NestJS
Arlington, Virginia, United States · Hybrid
$60k–$70k/yr
Position SummarySupports the development, execution and oversight of communications team initiatives and deliverables, with a primary focus on elevating executive thought leadership. While reporting to the Sr. Manager, E…
Skills: Executive Communications, Thought Leadership, Social Media Management, Media Relations, Project Management
Arlington, Virginia, United States · Hybrid
$140k–$155k/yr
Work Arrangement: Hybrid (1-2 days onsite per week) Clearance: Active Secret Foxhole Technology provides robust cybersecurity and IT support capabilities for federal civilian and defense agencies. A recognized leader in …
Skills: JavaScript, TypeScript, React, Next.js, NestJS
Arlington, Virginia, United States · On-site
$120k–$142k/yr
SkyePoint Decisions is a leading Cybersecurity Architecture and Engineering, Critical Infrastructure and Operations, and Applications Development and Maintenance IT service provider headquartered in Dulles, Virginia with…
Skills: Business Consulting, Risk Management, Technical Writing, Executive Communication, Project Coordination
Arlington, Virginia, United States · On-site
$100k–$124k/yr
SkyePoint Decisions is a leading Cybersecurity Architecture and Engineering, Critical Infrastructure and Operations, and Applications Development and Maintenance IT service provider headquartered in Dulles, Virginia with…
Skills: Digital Forensic Analysis, Network Administration, Virtualization, Azure Cloud Platform, Linux Administration
Arlington, Virginia, United States · On-site
Company Description Air is the leader in Enterprise Readiness. Our mission is to establish readiness as a real-time condition that is continuously achieved. Today, a dangerous Readiness Gap exists between what the front …
Skills: Client Engagement, Management Consulting, SaaS, Data Analytics, National Security Strategy
Arlington, Virginia, United States · On-site
$100k–$124k/yr
SkyePoint Decisions is a leading Cybersecurity Architecture and Engineering, Critical Infrastructure and Operations, and Applications Development and Maintenance IT service provider headquartered in Dulles, Virginia with…
Skills: Cybersecurity Data Analysis, Power BI, Tableau, Python, Pandas
Arlington, Virginia, United States · On-site
This position is a 1.0 FTE located at Washington-Liberty High School. QUALIFICATIONS: Must have or be eligible for Virginia licensure.Counseling endorsement.Dual endorsement in English as a Second Language and/or Special…
Skills: School Counseling, Classroom Management, Interpersonal Skills, Educational Leadership, Instructional Practices
Arlington, Virginia, United States · On-site
Job Summary: Piedmont Global is seeking an experienced Proposal Manager to lead the full proposal development cycle across a mixed portfolio of federal, state and local government, education, healthcare, and commercial o…
Skills: Proposal Management, RFP Analysis, Federal Procurement, SLED Procurement, Compliance Matrix Development
Arlington, Virginia, United States · On-site
$175k–$240k/yr
About the Team: Information processing and sense-making systems are the lifeblood of national security efforts, facilitating an understanding of the global situation, strategic planning, and tactical execution. The relia…
Skills: Full Stack Development, React, TypeScript, Python, API Integration
Arlington, Virginia, United States · Hybrid
$105k–$152k/yr
Overview Nakupuna Consulting is seeking a Quality Engineer III to provide software testing, data collection and analysis, subject matter expertise, and mentorship supporting the execution of a large size, multi-year cont…
Skills: Software Testing, Manual Testing, Automated Testing, PeopleSoft HCM, Azure Dev Ops
Arlington, Virginia, United States · Hybrid
$106k–$140k/yr
Overview Nakupuna Consulting is seeking a Functional Analyst III to join the software development team supporting the execution of a large size, multi-year contract to the Integrated Personnel and Pay System – Army (IPPS…
Skills: PeopleSoft Configuration, Agile Development, Functional Software Design, Unit Testing, Peer Reviews
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The role involves using MBSE methodologies and tools to develop system architectures and align them with customer requirements. Key tasks include capturing and tracing system requirements, developing system behavior models, and mentoring junior engineers.
Candidates must be US citizens with an active Secret clearance and a degree in engineering with 6-8+ years of relevant experience. Proficiency in SysML and experience working in a SIL environment are required.
Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges across the globe. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.
The Non-Kinetic Effects Business Area, part of the Defense Sector at Leidos, currently has an opening for a cleared Senior Model-Based Systems Engineer to work in our Arlington, VA office. This is an exciting opportunity to use your experience helping multiple DoD customers develop “bleeding edge” technology protecting our warfighters in the field. Your role will directly support our diverse portfolio of programs through a combination of requirements and design architecture analysis; MBSE Model development; mentoring junior engineers and assisting technical leadership develop briefing material.
As a Senior Systems Engineer with Leidos, you will use MBSE methodologies and tools to help develop system architectures on new development programs and incorporating Leidos unique capabilities into test or fielded HW. This role will also assist the Solution Architect (SA) or Primary Investigator (PI) in aligning the solution architecture to the customer requirements. Opportunities for potential customer interaction and ideal way to grow into a SA or PI.
Day-to-day life will involve exercising existing tools and models and creating new models to represent emerging systems. This will be a synthesis of MBSE tools like NoMagic CSM to:
Capture, decompose, and trace system level requirements.
Analyze, define, and refine architectures, and interfaces.
Develop system structure and behavior.
Collaborate with government stakeholders, software, test, mechanical and electrical teams.
Mentor junior team members.
Bachelor’s degree in engineering or related field with 8+ years of prior relevant experience or a master’s degree with 6+ years of experience in one of these areas: systems engineering, software engineering, test engineering or related field.
Must be a US Citizen.
Must have an active Secret clearance with the ability to obtain TS.
Experience working in a SIL environment.
Experience with SysML, preferably using Cameo/MagicDraw.
Strong desire to grow and learn new technologies.
Ability to communicate effectively in writing and verbally from informal one-on-one discussions or in a small group environment.
Ability to work within a dynamic work environment, ability to handle multiple tasks at once (multi-task).
Active TS clearance.
Familiar with Agile Methodologies, preferably SCRUM or Kanban.
Experience with Atlassian tools such as JIRA, Confluence, Bitbucket.
OCSMP (OMG Certification for Systems Modeling Professionals)
Experience with executable SysML simulation capabilities and scripting languages.
Experience with MBSE methodologies such as Magicgrid.
Understanding of military CONOPS.
Experience leading other systems engineers.
ElectronicWarfare
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.
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.
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.
An industry & technology leader serving government & commercial customers with smarter, more efficient innovations
Leidos is an industry and technology leader serving government & 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 $17.2 billion for the fiscal year ended January 2, 2026. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
Offices: 1750 Presidents St, Reston, Virginia 20190, US · 11955 Freedom Drive, Reston, VA 20190, US · 1145 N 2nd St, Leavenworth, KS 66048, US · 9600 Great Hills Trail, Austin, TX 78759, US · 221 3rd St, Newport, RI 02840, US
Based on 1030 listings with disclosed salaries, most government & public sector jobs in Arlington, VA pay between $70k–$195k per year. Individual offers vary with seniority, company size, and specialization.
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Companies currently hiring include Arlington Public Schools, Booz Allen Hamilton, Amazon, Arlington County Government, Accenture Federal Services, among others. Browse the listings above to see every active employer.
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