Fluid Systems Engineer
$100k - $175kGeneralmatter
About the Company General Matter enriches uranium. We are designing, building, and operating the world’s lowest-cost enrichment services, here in the US. In the process, we are restoring America’s ability to produce nuclear fuel to power AI, advanced manufacturing and critical industries our country relies on to remain competitive. Fuel drives the cost of advanced reactor electricity production, and enrichment drives the cost of the fuel that advanced reactors consume. Reliable, low-cost enrichment is the catalyst for the nuclear Renaissance now under way. Our mission is to make nuclear not only the cleanest and safest source of baseload power, but also the most affordable. We believe abundant nuclear energy will lead to a post-scarcity society. We were incubated inside Founders Fund, like Anduril and Palantir before us, and are backed by over a dozen of the world's top venture capital firms. Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production. We are a mission-driven company with a culture of urgency, accountability, and transparency. Help us build a high-energy society by making the cleanest, safest form of baseload energy the most affordable. About This Role We are seeking a Fluid Systems Engineer to lead the design, analysis, and deployment of fluid systems for our uranium enrichment facility. This role is responsible for developing highly reliable, manufacturable systems that move, store, and control fluids critical to enrichment operations. You will own systems from early sizing and architecture through detailed mechanical design, testing, and production ramp, working closely with manufacturing, operations, and safety teams. Responsibilities Perform system-level sizing and performance analysis for fluid systems to establish requirements and operating margins. Translate requirements into hardware concepts, evaluating architectures and design trades for performance, safety, and manufacturability. Design pressurized and unpressurized components and assemblies, producing original CAD models, drawings, and specifications. Conduct structural and mechanical analysis to ensure survivability under pressure, thermal, and operational loads. Drive design-for-manufacturability improvements to enable efficient, repeatable production. Lead first-article builds and work directly with manufacturing teams to establish robust production processes. Plan and execute development, qualification, and acceptance testing for critical hardware. Define concepts of operations for systems, from commissioning and acceptance testing through steady-state operation. Participate in internal and external design reviews with cross-functional partners, suppliers, and stakeholders. Basic Qualifications Bachelor’s degree (or higher) in Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Engineering Physics, or a related field. +4 years of experience in Fluids System design, analysis or hardware development Preferred Skills and Experience Experience with gas dynamics, thermal analysis, and finite element analysis (FEA). Hands-on experience but not limited to pressurized systems (e.g., valves, regulators, piping, tubing, pressure vessels). Experience owning operation-critical hardware from concept through production. Proficiency with FEA tools and CAD software Comfortable working across disciplines with manufacturing, safety, and operations teams. Strong communication, organization, and technical leadership skills. Additional Requirements Ability to work extended hours and weekends as necessary. Equal Opportunity Employer General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Compensation and Benefits The base salary range for this role is $100,000–$175,000 annually. Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan. #J-18808-Ljbffr Generalmatter
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General Matter in Los Angeles is seeking a Fluid Systems Engineer to lead the design and deployment of fluid systems for uranium enrichment. The role demands 4+ years of experience in fluid systems design and a Bachelor’s in Mechanical Engineering or related field. This...Suggested$140k - $180k
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jobs.frontdoordefense.com - Jobboard is seeking a Mechanical Engineer, Fluid Systems, for their location in El Segundo, California. This role focuses on the design and production ramp of Kaleidos fluid systems. The ideal candidate will have a Bachelor's degree in relevant...- A leading engineering firm is seeking a Senior Mechanical Engineer specializing in Fluid Systems to manage critical fluid technology from design to production. This role involves complex thermal analysis, component selection, and vendor collaboration to contribute to innovative...
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General Matter in Los Angeles is seeking a Fluid Systems Engineer to design, analyze, and deploy fluid systems for our uranium enrichment facility. This role involves working closely with cross-functional teams to ensure that the systems designed meet both performance...- A leading engineering firm in El Segundo is looking for a highly motivated Mechanical Engineer specializing in fluid systems. The role involves managing critical fluid systems, conducting thermal and fluid analysis, and collaborating on components such as compressors and...
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...Job Description Job Description Senior Fluid Systems Engineer - Architect Advanced Thermal & Power Conversion Systems Hawthorne, CA | On-site Opportunity Summary Join a venture-backed energy technology company developing advanced power generation systems...- Mechanical Engineer , Fluids Systems Radiant is seeking a highly motivated Mechanical Engineer, Fluids Systems to own critical Kaleidos fluid systems from preliminary design through build and production. These systems include the primary loop subsystems and power conversion...Full timeImmediate startRemote workFlexible hoursWeekend work
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Mechanical Engineer, Fluid Systems - 2026 New Graduate Own the end-to-end design and production ramp of Kaleidos fluid systems Location: El Segundo, California, United States Compensation: $105,000 - 125,000 USD / year Job Tags: Hardware About The Role Radiant is seeking...$105.75k - $169.63k
...adversaries. We are seeking an Integration Engineer to own the design release, build, test, and delivery of key vehicle fluid, propulsion, and mechanism assemblies — including... ...control surface actuators, spike inlet systems, engine integration, and other mission-critical...Weekly payPermanent employmentWork at officeFlexible hours- ...practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory‑built microreactors that use... ...motivated Staff Mechanical Engineer to own critical Kaleidos fluid systems from preliminary design through build and production. These...Full timeSummer workRemote workFlexible hoursWeekend work
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Sr. Mechanical Engineer (Infrastructure Fluid Systems) Design and implement advanced fluid systems for SpaceX's manufacturing facilities. Location: Hawthorne, California, United States Compensation: $125,000 - 175,000 USD / year About The Role SpaceX was founded under...Permanent employmentTemporary work- ...EXPLORATION TECHNOLOGIES CORP is looking for a SR. HVAC DESIGN ENGINEER to join their construction and infrastructure team in... ...designing advanced manufacturing facilities and being an expert on fluid systems including HVAC, piping, and dust collection. The ideal candidate...
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A leading aerospace company is seeking a Mechanical Engineer to join its construction team in Hawthorne, CA. In this role, you will... ...be responsible for designing and analyzing advanced HVAC and fluid systems critical to manufacturing processes. Candidates should have a...- ..., safe, and low-cost space vehicles and systems within a culture of safety, collaboration... ....As part of a hardworking team of engineers, specialists, and technicians, you will... ...current technical hands-on experience in: Fluids, Thermal, Propulsion, Cryogenics, Pneumatics...Permanent employmentTemporary workLocal area
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