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Systems Engineer II (Mission Engineering)

Sierra Space

Sierra Space

Software Engineering
Louisville, CO, USA · Louisville, KY, USA
Posted on Friday, July 14, 2023
Do you have a passion for space, a love of engineering, and a desire to support our nation’s heroes? Do you want to be a part of the future facets of space? We dream big at Sierra Space Corporation— from space exploration, habitation, and services development to keeping our service members safe and creating the systems that keep our world united and sustain our way of living. If this appeals to you, JOIN US! You will be part of an extraordinary team that is passionate about the mission, relentless in our commitments, driven to exceptionalism, and bold in thinking.

Sierra Space, based in Louisville, Colorado with operations in Madison, Wisconsin, Durham, North Carolina, and Kennedy Space Center, Florida, designs and manufactures advanced spacecraft, satellites, propulsion and environmental systems, spacecraft subsystems and components for the U.S. government (including NASA), commercial customers and international organizations. Learn more about Sierra Space

Sierra Space’s Orbital Systems and Services (OSS) division focuses on the design, build, and operations of small satellites in support of commercial services and national security space and offers two work locations: Louisville, Colorado and Centennial, Colorado.

Primary Responsibilities:

As a Mission Systems Engineer, you will be using your skills and expertise to research, architect, model, simulate, test, certify and improve cutting edge products and services. You'll be developing complex system architectures within contextual modeling platforms, ushering them from operational concept through preliminary and detailed design, simulation, and test using progressive tools.

As a cross-functional engineer, you oversee system-level ownership of new products and processes through the product lifecycle.

  • Create solutions to complex problems and integrate disparate systems and concepts.

  • Research and analyze alternative technologies, Lead trade studies.

  • Author technical and engineering memos to document decisions and solutions as required.

  • Support program efforts to interpret customer requirements and decompose them into hardware, software and system requirements and specifications.

  • Originate specifications, control documents, verification and validation plans, procedures, reports, or other documentation in support of design and development activities.

  • Define interfaces and develop Interface Control Documents (ICD).

  • Create architecture diagrams.

  • Develop test plans, test cases, and test procedures including execution scripts.

  • Coordinate and execute various test events such as development, risk reduction, requirement verification and other system functional/performance testing utilizing Software-in-the-Loop and Hardware-in-the-Loop test platform configurations, as well as flight hardware/software configuration.

  • Participate in Technical Exchange Meetings (TEMs) and other formal and informal engineering discussions with teammates, customers, and external stakeholders.

  • Brief customers and internal leadership on technical progress, risks, and alternative courses of action.

  • Prepare material for, and conduct periodic design reviews or major technical reviews, including design and test/launch readiness reviews.

  • Support the creation of, and adherence to, process controls, configuration management requirements, and peer review processes to ensure accuracy and completeness of technical products.

  • Provide inputs to team status, including schedule, budget and earned value.

  • Metrics definition, tracking and status reporting for the position’s areas of responsibility.

  • Refine and update appropriate sections of the program’s integrated master schedule.


  • The ability to obtain and maintain a Security Clearance is required for this position. Learn more about the background check process for Security Clearances

  • Bachelor of Science or master's degree in aerospace engineering or related discipline and typically 2(two) or more years of relevant experience; higher education by substitute for experience.

  • Relevant experience may be considered in lieu of education.

  • Practical knowledge of engineering principles and practices

  • Experience working in multi-disciplinary design and development teams.

  • Knowledge of requirements management, functional requirements parsing, derivation, and allocation; systems design, systems integration, technical risk identification and management strategies, and Verification and Validation (V&V) principles.


  • Strongly prefer experience in modeling, simulation and analysis experience related to spacecraft mission analysis.

  • Strongly prefer experience with Systems Tool Kit (STK) or equivalent analysis tools that support orbit integration/propagation, payload sensor modeling, and access metric assessment.

  • Strongly prefer experience in CONOPS development for spacecraft or space systems.

  • Domain expertise in one, or more of the following areas: Spacecraft Structures, Thermal Control Subsystems, Electrical Power Systems, Propulsion, Guidance, Navigation, and Control, Avionics, Communication.

  • Knowledge of various mission analysis techniques and software tools.

  • Experience or certification in INCOSE standards.

  • Background in the Aerospace and Defense Industry.

  • Knowledge in space vehicle mission planning, command and control, and operations.

  • Understanding of establishing and tracking key Technical Performance Measurements.

  • Familiarity with Matlab, DOORS, Cameo.


To conform to U.S. Government international trade regulations, applicant must be a U.S. Citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State or U.S. Department of Commerce.

This position requires the ability to obtain and maintain a Top-Secret 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.

With 30+ years of proven spaceflight heritage, Sierra Space has provided more than 4,000 space systems, subsystems and components to customers worldwide, and participated in more than 500 missions to space, including to Mars. The company has technology in production and in development to enable space habitats for short- and long-duration space travel, a fleet of Dream Chaser spaceplanes, and the first free-flying commercial space station. Please visit to learn more about Sierra Space, its business areas, capabilities, programs, products and services.

Physical/Mental/Emotional Requirements:

  • Frequently walk, sit, stand, climb stairs and steps
  • Frequently repeat same hand, arm, and finger motion many times to include finger and hand dexterity
  • Rarely lifting or carrying up to 20 lbs.

Working Conditions:

  • Rarely exposed to outdoor elements (high/low temperatures, sun, rain/snow, etc.)
  • Rarely exposed to fumes or hazardous chemicals/materials
  • Rarely exposed to loud noises
Estimated Starting Salary Range: $91,154.71 - $125,337.72. SNC considers several factors when extending job offers, including but not limited to candidates’ key skills, relevant work experience, and education/training/certifications.

Sierra Space offers a generous benefit package, including medical, dental, and vision plans, 401(k) with 150% match up to 8%, life insurance, 3 weeks paid time off, tuition reimbursement, and more.

At Sierra Space, our mission is to dream, innovate, inspire and empower the next generation to transform humanity through technology and imagination. As an Equal Opportunity Employer, we welcome our employees to bring their whole selves to their work. Sierra Space is committed to fostering an inclusive, accepting, and diverse environment free of discrimination on the basis of race, color, age, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Contributions to Sierra Space come in many shapes and styles, and we believe diversity in our workforce fosters new and greater ways to dream, innovate, and inspire.