Firefly Space Systems

Spacecraft Thermal Engineer II

Firefly Space Systems$95K — $115K *
Aerospace & Defense
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • B.S. in Aerospace Engineering, Mechanical Engineering, Physics, or related field
  • 3-8 years of spacecraft or aerospace thermal analysis experience
  • Strong experience with Thermal Desktop and thermal analysis software
  • Comprehensive understanding of spacecraft thermal control systems
  • Experience correlating analytical models with test data
  • Working knowledge of Python and MATLAB
  • Excellent technical communication skills

Responsibilities

  • Develop and maintain subsystem and vehicle-level spacecraft thermal models
  • Own thermal analyses from setup through documentation with minimal oversight
  • Execute thermal trade studies for design, integration, testing, and mission operations
  • Develop thermal control solutions like MLI and radiator sizing
  • Coordinate thermal environments with engineering teams and customers
  • Organize and support vehicle-level thermal vacuum testing
  • Support thermal control subsystem on console during launch operations

Benefits

  • Mentorship opportunities for entry-level engineers
  • Involvement in advanced spacecraft thermal challenges
  • Collaboration across multiple engineering disciplines
  • Contributions to process improvements and automation
Full Job Description
SUMMARY

Firefly Thermal Engineers apply advanced simulation and heat transfer expertise to solve complex spacecraft thermal challenges from concept development through flight operations. Engineers in this role independently own subsystem thermal analyses, develop validated thermal models, and influence engineering decisions through high-quality analytical work.

Successful candidates are expected to drive thermal analyses from problem definition through documentation while collaborating across multiple engineering disciplines.
RESPONSIBILITIES
  • Independently develop and maintain subsystem and vehicle-level spacecraft thermal models.
  • Own thermal analyses from model setup through documentation with minimal oversight.
  • Execute thermal trade studies supporting design, integration, testing, and mission operations.
  • Develop thermal control solutions including MLI, radiator sizing, heater strategies, coatings, and other passive and active thermal control technologies.
  • Coordinate thermal environments with internal engineering teams and external customers.
  • Organize and support testing, including vehicle-level thermal vacuum testing.
  • Support the thermal control subsystem on console during launch operations.
  • Correlate analytical models using thermal vacuum and environmental test data.
  • Break large analytical efforts into actionable tasks while managing priorities across multiple programs.
  • Document analysis results for internal and customer design reviews.
  • Mentor entry-level engineers by reviewing models, analyses, and reports.
  • Identify model sensitivities, uncertainties, and technical risks while recommending mitigation strategies.
  • Contribute to process improvements, automation, and modeling best practices.


QUALIFICATIONS

Required
  • B.S. in Aerospace Engineering, Mechanical Engineering, Physics, or related field
  • Approximately 3• 8 years of spacecraft or aerospace thermal analysis experience
  • Strong experience with Thermal Desktop and related thermal analysis software
  • Strong understanding of spacecraft thermal control systems
  • Experience correlating analytical models with test data
  • Working knowledge of Python and MATLAB
  • Excellent technical communication skills
  • Demonstrated ability to independently execute complex engineering analyses

Desired
  • M.S. degree
  • Experience with ANSYS SpaceClaim, NX, or Simcenter
  • Experience developing thermal test plans and coordinating thermal vacuum tests
  • Familiarity with NASA spacecraft thermal standards
  • Experience supporting spacecraft through integration and environmental testing

About Firefly Space Systems

Firefly Space Systems was an American aerospace manufacturer based in Cedar Park, Texas. The company was founded in 2013 with the goal of developing low-cost launch vehicles for the small satellite industry. Firefly's Alpha rocket was designed to carry payloads of up to 1,000 kg to low Earth orbit. The company was acquired by EOS Launcher in 2017 and is now known as Firefly Aerospace. Firefly Aerospace is continuing the development of the Alpha rocket and is also working on a larger rocket called Beta, which is designed to carry payloads of up to 8,000 kg to low Earth orbit. Firefly Aerospace is committed to providing affordable access to space for small satellite operators.
Learn more about Firefly Space Systems
Industry
Founded
2013

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