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Engineering

Bothell, WA

Full-time

Senior Spacecraft Propulsion Test Engineer

Send your cover letter and resume to info@portalsystems.space with the email subject: Senior Structural Engineer — Spacecraft Systems

We are seeking a highly skilled Propulsion Engineer with extensive experience in spacecraft propulsion systems, particularly in analysis and testing within high-vacuum environments. The ideal candidate will have expertise in testing systems using storable propellants. Proficiency in propulsion modeling software, including ROCETS, TDK, and other industry-standard tools, is preferred.

Responsibilities

  • Design, analyze, and optimize spacecraft propulsion systems with a focus on storable propellants.
  • Conduct and oversee testing of propulsion systems in high-vacuum environments, ensuring system performance, reliability, and safety.
  • Utilize propulsion modeling software (e.g., ROCETS or TDK) to simulate and validate system performance.
  • Work with storable propellants in test and operational environments.
  • Develop and execute test plans, procedures, and data analysis for propulsion system development, qualification and acceptance.
  • Collaborate with test facility teams to ensure safe and efficient handling of hazardous propellants.
  • Support system-level trade studies, mission planning, and anomaly resolution related to propulsion performance.
  • Prepare and present technical reports, documentation, and findings to stakeholders, including internal teams and external partners.
  • Mentor junior test engineers and technicians.

Basic Qualifications

  • Master’s, or Ph.D. in Aerospace Engineering, Mechanical Engineering, or a related discipline.
  • Proven experience in spacecraft propulsion system design, analysis, and testing, specifically with storable propellants.
  • Expertise in propulsion modeling and simulation tools (e.g., ROCETS, TDK, or other).
  • Strong understanding of fluid dynamics, thermodynamics, and combustion processes in spacecraft propulsion.
  • Hands-on experience with high-vacuum test facilities and propellant handling procedures for hazardous chemicals.
  • Knowledge of thruster performance evaluation, reaction control systems (RCS), and main engine applications.
  • Strong ability to work in cross-functional teams and communicate complex technical concepts effectively.

Preferred skills & Experience

  • Experience with electric propulsion, hybrid propulsion systems, or green monopropellants.
  • Knowledge of mission design, orbital mechanics, and spacecraft system integration.
  • Familiarity with regulatory standards, safety protocols, and industry best practices for hazardous propellant handling and spacecraft propulsion.

To apply, please send your cover letter and resume to info@portalsystems.space with the email subject: Senior Spacecraft Propulsion Test Engineer

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