Specialist, Systems Engineer - Modeling and Simulation

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Harris is dedicated to recruiting and developing high‑performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3

Harris provides an inclusive, engaging environment designed to empower employees and promote work‑life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

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Harris is the Trusted Disruptor in defense tech. With customers’ mission‑critical needs always in mind, our employees deliver end‑to‑end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Specialist, Systems Engineer – Modeling and Simulation

Job Code: 34858

Job Location: Springfield, VA (100% On‑site)

Job Schedule: 5/8

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Harris Technologies is seeking a Modeling & Simulation Engineer to support high‑visibility national security space programs. This role focuses on developing and executing high‑fidelity space mission simulations to evaluate spacecraft performance, mission resilience, and operational effectiveness in contested and dynamic environments.

The selected candidate will apply astrodynamics, analytical modeling, and mission‑focused simulation techniques to support operational planning, system performance analysis, mission protection, and digital engineering initiatives.

• Experience with orbital mechanics modeling and space mission analysis.
• Develop, implement, and maintain high‑fidelity space mission models and simulations supporting operational planning, performance analysis, and mission assurance activities.
• Perform orbital mechanics modeling including orbit propagation, maneuver analysis, rendezvous and proximity operations (RPO), conjunction assessment, and/or covariance analysis.
• Develop and execute threat‑informed simulation scenarios incorporating adversary capabilities, red vs blue modeling, and Space Domain Awareness (SDA) considerations.
• Present technical findings, risk assessments, and analytical insights to program leadership and/or customer stakeholders.
• Support exercise planning, wargaming activities, and mission rehearsal simulations as required.

• Bachelor’s degree and minimum 4 years of prior relevant experience. Graduate degree and a minimum of 2 years of prior related experience. In lieu of a degree, minimum of 8 years of prior related experience.
• Top Secret/SCI with CI Poly required.
• 2 years of experience demonstrating the ability to translate operational requirements into executable simulation architectures.
• 2 years experience with modeling tools such as STK, ODTK, GMAT, Free Flyer, or Python‑based analytical environments.

• Experience supporting Space Domain Awareness (SDA), Mission Protection, or national security space operations programs.
• Knowledge of threat modeling and contested space environments.
• Experience supporting wargaming or operational exercises in coordination with Department of War (DoW) and Intelligence Community (IC) organizations, including U.S. Space Force and the National Reconnaissance Office (NRO).

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Harris Technologies is proud to be an Equal Opportunity Employer. L3

Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws.

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Harris maintains a drug‑free workplace and performs pre‑employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

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