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Cimarron is seeking a Propulsion Senior Engineer - Pressure & Fluid Systems who will own the end-to-end technical execution of a bipropellant feed system from requirements definition through design, build, integration, test, and flight readiness. You will lead cross-functional teams and suppliers to deliver to aggressive cost and schedule targets while maintaining safety and configuration discipline. The ideal candidate combines deep hands-on propulsion hardware experience with strong technical leadership, clear communication, and a bias for execution.

This position is 100% onsite located in Houston, TX. Key Duties: Owns the end-to-end technical execution of spacecraft pressure control and fluid systems - including COPVs, flow control devices (valves, regulators, manifolds, filters) from requirements through design, build, integration, test and flight readiness. Serve as a subject matter expert in propellant feed system and pressurization system design, providing technical authority on system architecture, component selection, and interface definition across the development lifecycle.

Perform detailed modeling, analysis and simulation of fluid systems using tools such as GFSSP, ANSYS, Fluent to evaluate system performance, fluid dynamics, thermal effects and transient behaviors. Perform detailed sizing and selection of fluid system components, ensuring compatibility with performance, environmental, material and other requirements. Define, plan, and execute system and component level tests including development, qualification and acceptance testing anchor analytical models and validate simulations against test data.

Lead and participate in internal and external design and gate reviews, trade studies and subassembly integration activities; ensure compliance with system requirements and program milestones. Coordinate and manage technical requirements and design certification activities with external vendors and suppliers, interface on cost, schedule, design, manufacturing and acceptance. Define and control functional and physical interfaces between the fluid/pressure systems and vehicle level systems, collaborating with structures, thermal, avionics, and software teams.

Provide technical mentorship and guidance to less experienced engineers. Responsible for delivering against safety, cost, and schedule targets.Required Skills, Experience, and Education: Due to facility security requirements, only U.S. citizens or permanent residents are eligible for consideration at this time

Ability to complete a pre-employment background check and drug screening, which will include but is not limited to testing for marijuana use. Must be willing to work evenings and weekends as needed to meet critical project milestones. 7 or more years of relevant experience with demonstrated depth in pressure control and fluid systems design.

Significant hands-on experience with propellant feed system design, development, qualification and integration, including COPVS, valves, regulators, filters, manifolds and instrumentation. Expertise in fluid dynamics, thermodynamics and heat transfer with demonstrated application to propulsion systems. Experience with oxygen compatibility requirements and assessments.

Experience coordinating with external vendors on technical requirements, design verification, cost and schedule performance. 3D modeling software experience: SolidWorks preferred. Bachelor's degree from an accredited college or university in Aerospace, Mechanical or related Engineering discipline required.

Desired Skills, Experience, and Education: Masters degree. Business Profile: Cimarron is a global solutions company with a strategic partnering approach to satisfying customer-driven requirements. We ensure customer success with a modern approach and experienced leadership.

Driven by an entrepreneurial spirit, Cimarron is fueled by highly skilled employees, developing new innovative technologies, and delivering superior products and services. We believe in recognizing employees' worth by offering competitive salaries and benefits, including health, dental, and vision insurance, 401(k) contributions, educational reimbursement, and much more. From company communication through Company-wide information meetings led by our President and CEO, to an Awards program designed to recognize our amazing employees and their accomplishments, you will not only feel like you are a part of a team, you will be a valued member of the Cimarron family.

Cimarron is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or any other characteristic protected by federal, state, or local law.Required Skills, Experience, and Education: Due to facility security requirements, only U.S. citizens or permanent residents are eligible for consideration at this time

Ability to complete a pre-employment background check and drug screening, which will include but is not limited to testing for marijuana use. Must be willing to work evenings and weekends as needed to meet critical project milestones. 7 or more years of relevant experience with demonstrated depth in pressure control and fluid systems design.

Significant hands-on experience with propellant feed system design, development, qualification and integration, including COPVS, valves, regulators, filters, manifolds and instrumentation. Expertise in fluid dynamics, thermodynamics and heat transfer with demonstrated application to propulsion systems. Experience with oxygen compatibility requirements and assessments.

Experience coordinating with external vendors on technical requirements, design verification, cost and schedule performance. 3D modeling software experience: SolidWorks preferred. Bachelor's degree from an accredited college or university in Aerospace, Mechanical or related Engineering discipline required.

Desired Skills, Experience, and Education: Masters degree. Business Profile: Cimarron is a global solutions company with a strategic partnering approach to satisfying customer-driven requirements. We ensure customer success with a modern approach and experienced leadership.

Driven by an entrepreneurial spirit, Cimarron is fueled by highly skilled employees, developing new innovative technologies, and delivering superior products and services. We believe in recognizing employees' worth by offering competitive salaries and benefits, including health, dental, and vision insurance, 401(k) contributions, educational reimbursement, and much more. From company communication through Company-wide information meetings led by our President and CEO, to an Awards program designed to recognize our amazing employees and their accomplishments, you will not only feel like you are a part of a team, you will be a valued member of the Cimarron family.

Cimarron is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or any other characteristic protected by federal, state, or local law.