Job Requirements
Reston, VA
Top Secret/SCI Polygraph not specified
Mid Level Career (5+ yrs experience)
$150,000 - $225,000
Job Description
Job #: 3056047
Apex Systems is currently hiring an MBSE Modeler with a large federal client. In this position, you will design, develop, and maintain SysML-based system models. You will collaborate with systems engineers, software engineers, architects, and government stakeholders to ensure the digital engineering environment accurately represents the operational and technical baseline, driving design and decision-making.
Project Details / Mission Supported:
• Develop, maintain, and evolve models representing system architectures, requirements, behaviors, and interfaces.
• Translate stakeholder needs and system requirements into model elements.
• Establish and enforce modeling conventions, patterns, and best practices.
• Support the creation and maintenance of digital system architectures.
• Integrate MBSE models with requirements management tools to maintain traceability.
• Collaborate with engineering teams to derive requirements and validate designs.
• Generate model-based reports and visualizations for technical reviews.
• Support verification and validation activities.
• Participate in on-site meetings with customers to present model content.
• Contribute to process improvement for MBSE and digital engineering.
Qualified candidates will have the following experience and skills:
- Bachelor’s degree in Systems Engineering, Electrical Engineering, Computer Science, Computer Engineering, or a related technical discipline. Additional relevant experience may be considered in lieu of a degree.
- 4-5+ years of experience in systems engineering for complex systems, with 2-3+ years focused on MBSE modeling.
Technical Skills:
• Proficiency in capturing program architecture in Cameo.
• Hands-on experience with MBSE tools such as Cameo/MagicDraw, IBM Rational Rhapsody, or Enterprise Architect.
• Proficiency in SysML (requirements, block definition, internal block, activity, sequence, state machine, parametric diagrams).
• Experience integrating models with requirements management tools (e.g., DOORS, Jama, JIRA).
• Understanding of systems engineering lifecycle processes.
• Ability to work onsite and coordinate with teammates.
• Strong communication skills for presenting complex model concepts.
• Must be professional, coachable, and solution-oriented.
Location: Fully Onsite in Reston, VA
Onsite expectation: Fully onsite, SCIF work
Clearance Level: TS with SCI eligibility in DISS
Salary/Pay range: $65-105/HR
Duration: 12 month ‘contract to hire’
PLEASE NOTE: Candidates must be able to obtain and/or maintain a TS/SCI security clearance as a condition and continuation of employment*
If you are interested, please apply here or email an updated copy of your resume to
Apex Systems Military & Veteran Programs
At Apex Systems, we are proud to support those who serve. Our commitment to the military community is reflected in our robust veteran hiring initiatives, military-friendly workplace policies, and nationally recognized programs. We value the leadership, discipline, and mission-first mindset that military professionals bring to our team. Join us in continuing your mission.
Why Apex is a Top Choice for Veterans and Military Talent:
• Military-Friendly Employer: Recognized as a Military Friendly® Employer for multiple consecutive years.
• Transition Programs: DoD Skill Bridge program with multiple pathway options.
• Veteran Hiring Commitment: We actively partner with multiple veteran and military organizations that specialize in IT upskilling and certification training, helping service members and veterans transition into high-demand tech careers
• Apex Military Network: Internal employee resource group supporting veterans, Guard/Reserve members, and their families.
Apex Benefits Overview
Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.
Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.
Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy
Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.
Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.
If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at accommodations@apexsystems.com or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.
UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.
Apex Systems is currently hiring an MBSE Modeler with a large federal client. In this position, you will design, develop, and maintain SysML-based system models. You will collaborate with systems engineers, software engineers, architects, and government stakeholders to ensure the digital engineering environment accurately represents the operational and technical baseline, driving design and decision-making.
Project Details / Mission Supported:
• Develop, maintain, and evolve models representing system architectures, requirements, behaviors, and interfaces.
• Translate stakeholder needs and system requirements into model elements.
• Establish and enforce modeling conventions, patterns, and best practices.
• Support the creation and maintenance of digital system architectures.
• Integrate MBSE models with requirements management tools to maintain traceability.
• Collaborate with engineering teams to derive requirements and validate designs.
• Generate model-based reports and visualizations for technical reviews.
• Support verification and validation activities.
• Participate in on-site meetings with customers to present model content.
• Contribute to process improvement for MBSE and digital engineering.
Qualified candidates will have the following experience and skills:
- Bachelor’s degree in Systems Engineering, Electrical Engineering, Computer Science, Computer Engineering, or a related technical discipline. Additional relevant experience may be considered in lieu of a degree.
- 4-5+ years of experience in systems engineering for complex systems, with 2-3+ years focused on MBSE modeling.
Technical Skills:
• Proficiency in capturing program architecture in Cameo.
• Hands-on experience with MBSE tools such as Cameo/MagicDraw, IBM Rational Rhapsody, or Enterprise Architect.
• Proficiency in SysML (requirements, block definition, internal block, activity, sequence, state machine, parametric diagrams).
• Experience integrating models with requirements management tools (e.g., DOORS, Jama, JIRA).
• Understanding of systems engineering lifecycle processes.
• Ability to work onsite and coordinate with teammates.
• Strong communication skills for presenting complex model concepts.
• Must be professional, coachable, and solution-oriented.
Location: Fully Onsite in Reston, VA
Onsite expectation: Fully onsite, SCIF work
Clearance Level: TS with SCI eligibility in DISS
Salary/Pay range: $65-105/HR
Duration: 12 month ‘contract to hire’
PLEASE NOTE: Candidates must be able to obtain and/or maintain a TS/SCI security clearance as a condition and continuation of employment*
If you are interested, please apply here or email an updated copy of your resume to
Apex Systems Military & Veteran Programs
At Apex Systems, we are proud to support those who serve. Our commitment to the military community is reflected in our robust veteran hiring initiatives, military-friendly workplace policies, and nationally recognized programs. We value the leadership, discipline, and mission-first mindset that military professionals bring to our team. Join us in continuing your mission.
Why Apex is a Top Choice for Veterans and Military Talent:
• Military-Friendly Employer: Recognized as a Military Friendly® Employer for multiple consecutive years.
• Transition Programs: DoD Skill Bridge program with multiple pathway options.
• Veteran Hiring Commitment: We actively partner with multiple veteran and military organizations that specialize in IT upskilling and certification training, helping service members and veterans transition into high-demand tech careers
• Apex Military Network: Internal employee resource group supporting veterans, Guard/Reserve members, and their families.
Apex Benefits Overview
Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.
Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.
Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy
Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.
Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.
If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at accommodations@apexsystems.com or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.
UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.
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