{"id":2057165,"url":"https://alion.io/job/sierra-space-mission-design-engineer-i","title":"Mission Design Engineer I","company":{"id":58801,"name":"Sierra Space","domain":"sierraspace.com","url":"https://alion.io/company/sierra-space","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":78,"open_postings":30,"ghost_share":0,"stale_share":0.867,"repost_share":0,"time_to_fill_p50_days":35,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Aerospace","role_family":"Aerospace","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Centennial, United States","Louisville, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":77685,"max":106816,"currency":"USD","period":"year","gross":null,"usd_annual":106816},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Cameo Systems Modeler","optional":true},{"name":"MATLAB","optional":true},{"name":"Python","optional":true},{"name":"STK","optional":true},{"name":"SysML","optional":true}],"status":"live","first_seen_at":"2026-10-07T00:00:00Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-30T16:00:58Z","board_verified":true,"closed_at":null,"days_open":23,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":23},"description":"Sierra Space Careers:\nAt Sierra Space, we build the missions and systems that keep our world secure in the domain above Earth.\nSierra 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.\nOur 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.\nWe are mission-driven, and together, we are an extraordinary team.\nAbout the Role\nThe Mission Design & Analysis Engineer I is an entry-level role focused on supporting senior engineers in mission design and analysis projects. The Mission Design & Analysis Engineer I works to define mission parameters and derive driving mission requirements as part of a novel spacecraft development. The Mission Design & Analysis Engineer I 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, then communicate those results to the broader design team.In this role, you will assist senior engineers in the analysis, modeling, and simulation of system and system-of-systems performance parameters. You will collect and analyze data related to mission design and system performance, helping to develop solutions to routine technical problems of limited scope and complexity. Additionally, you will prepare technical documentation and reports to communicate findings and support project objectives. Working collaboratively with team members, you will contribute to achieving project goals and meeting deadlines. Your responsibilities will also include clearly communicating technical concepts and information both verbally and in writing to ensure effective collaboration and understanding.\nAbout You\nOur 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.\nWe’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.\nMinimum Qualifications:\nRequires Bachelor's degree in a related field (or equivalent work experience in lieu of degree).\nTypically entry-level 0 - 2 years of experience.\nBasic knowledge and understanding of systems design and development principles.\nAbility to work in a team and follow instructions from senior engineers.\nAbility to clearly communicate verbally and in writing.\nPreferred Qualifications:\nInternship, co-op experience or specialized education in mission design or analysis, astrodynamics, or system-of-systems engineering.\nExperience working in or familiarity with common industry system & mission modeling tools and languages, such as STK, FreeFlyer, Cameo EA, SysML, Matlab, Python or similar.\nStrong problem-solving skills and attention to detail.\nEagerness to learn and develop new skills in a dynamic work environment.\nCompensation:\nPay Range:\n$77,685.00 - $106,816.50Your 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.\nElevate Your Career\nAt 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.\nWe 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.\nSierra 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.\nApplication Deadline: This role will remain posted until a qualified pool of candidates is identified.\nPlease 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.\nSierra Space Corporation is an equal opportunity employer and is committed to working with and providing reasonable accommodations to applicants with disabilities. 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