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Sr Systems Engineer - EO/IR Systems (Clearance Required)

Sierra Space
life insurance, paid time off, 401(k)
United States, Colorado, Centennial
Feb 27, 2026
Sierra Space Careers:

At Sierra Space, we build the missions and systems that keep our world secure in the domain above Earth.

Sierra Space team members share a spirit of innovation and collaboration and a belief that we can deliver on the boldest missions in space today. Together with our customers, we aim to safeguard our nation, sustain human presence in space, and secure the freedom of operations in low Earth orbit and beyond.

Our success is measured by the trust of those who rely on what we build and deliver, and our technologies keep the United States and its allies mission-ready throughout space.

We are mission-driven, and together, we are an extraordinary team.

About the RoleThe Sr Mission Design & Analysis Engineer leads mission design via modeling, simulation and analysis. The Sr Mission Design & Analysis Engineer leads teams to define mission parameters and derive driving mission requirements as part of a novel spacecraft development. The Sr Mission Design & Analysis Engineer understands and parses mission objectives to produce relevant mission modeling and simulation data using analytical methods and mission level modeling and simulation techniques. They create constellation and system-of-systems models to evaluate mission performance parameters, developing novel tools of limited complexity as required, then communicate those results to the broader design team and customers. The Sr Mission Design & Analysis Engineer maintains and updates the system performance models as required to verify and validate system performance throughout system development.

In this role, you will lead the analysis, modeling, and simulation of system and system-of-systems performance parameters to drive constellation design, payload selections, and vehicle sizing. You will oversee system modeling efforts on medium-sized teams, including the collection and analysis of data related to mission design and system performance. Additionally, you will develop novel modeling and analysis tools to produce relevant performance results as required, represent the mission viewpoint, and present mission performance models and analysis results to the development team and customers. You will lead analysis-based mission performance validation and verification efforts, prepare detailed technical documentation and reports to communicate findings and support project objectives, and work collaboratively with team members to achieve project goals and meet deadlines. Furthermore, you will work and communicate effectively with technical and specialty subject matter expert engineers to drive mission design and analysis products, ensuring high-quality deliverables and project success. About You

Our mission is driven by an unyielding commitment to advancing space-based technology in service of our customers and safeguarding national security. We seek individuals who are passionate about innovating beyond boundaries and relentlessly pursuing solutions that protect, preserve and empower - to join us in this critical mission.

We're looking for team members who align with our values, mission and goals - while also meeting the minimum qualifications below. The preferred qualifications are a bonus, not a requirement.

Minimum Qualifications:
  • Requires Bachelor's degree in a related field (or equivalent work experience in lieu of degree or Masters +8 yrs experience).
  • Typically 10+ years of related experience (or Masters + 8 yrs experience).
  • An active Top Secret with SCI eligibility U.S. Security Clearance is required.
  • Demonstrated expertise in mission design, mission modeling and simulation techniques, and mission analysis.
  • Demonstrated expertise in mission level objectives, requirements, and Design Reference Mission (DRM) development.
  • Ability to derive requirements and design drivers from system modeling and simulation results.
  • In-depth knowledge of systems design, systems development, and technical risk identification and management strategies.
  • Exceptional analytical and computational skills.
  • Demonstrated ability to work and communicate with technical and specialty subject matter expert engineers to drive systems engineering products.
Preferred Qualifications:
  • Advanced degree in Engineering, Physics, or a related field.
  • Extensive experience with common industry system & mission modeling tools and languages, such as STK, FreeFlyer, Cameo EA, SysML, Matlab, Python, or similar.
  • Strong understanding of orbital mechanics and astrodynamics.
  • Ability to independently research, adapt, and/or develop mission analysis tools to solve novel problems.
  • Ability to trade mission attributes to achieve design-to-cost and schedule constraints while maintaining mission objectives.
  • Experience with spacecraft systems and subsystems, space mission sensors, payloads, and ground systems.
  • Experience with electronic warfare, space domain awareness, electro-optical sensing, and mission communications.
  • Experience evaluating sensor or weapon system performance on space-based platforms.
  • Experience with DoD modeling environments (Brawler, Suppressor, AFSIM, EADSIM, ESAMS, etc).
  • Experience leading teams to achieve project results.
  • Familiarity with preparation and development of project estimates, technical proposals, and program cost and schedule management.
  • Excellent communication and presentation skills.
  • Ability to work independently and as part of a team.
  • Demonstrated ability to meet deadlines and deliver high-quality work.
Compensation:

Pay Range:

$143,700.00 - $197,608.50

Your actual base compensation will be determined on a case-by-case basis and may vary based on job-related knowledge and skills, education,experience, internal equity and market competitiveness.

IMPORTANT NOTICE:

This position requires current/active Top Secret with SCI eligibility U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment. Non-U.S. Citizens may not be eligible to obtain a security clearance. The Department of Defense Consolidated Adjudications Facility (DoD CAF), a federal government agency, handles the adjudicative aspects of the security clearance eligibility process for industry applicants. Adjudicative factors which affect the outcome of the eligibility determination include, but are not limited to, allegiance to the U.S., foreign influence, foreign preference, criminal conduct, security violations and illegal drug use.

Elevate Your Career

At Sierra Space, we are committed to your personal and professional development. We empower you to make profound and meaningful contributions and foster a vibrant culture of collaboration, where teamwork ignites breakthrough innovations.

We also offer a generous benefit package, including medical, dental, and vision plans, 401(k) with 150% match up to 6%, life insurance, 3 weeks paid time off, and more.

Sierra Space is an industry-leading space and defense technology company providing satellites, spacecraft, and enabling mission systems and components. We deliver mission-proven technologies to our customers that safeguard our nation, protect space-based assets and enable space exploration.

Application Deadline: This role will remain posted until a qualified pool of candidates is identified.

Please note: Sierra Space does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to Sierra Space team members not through our approved vendor list or Talent Acquisition will be considered property of Sierra Space, and we will not be obligated to pay any referral fees.

Sierra Space Corporationis an equal opportunity employer and is committed to working with and providing reasonable accommodations to applicants with disabilities. If you need special assistance or a reasonable accommodation related to applying for employment withSierra Spaceor at any stage of the recruitment process, pleasecontact us.

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