S

SpaceX

Builds rockets and runs Starlink satellite internet

Test Engineer – Electric Propulsion, Satellites - Electric Propulsion, Satellites

Full-TimeUpdated on 10/23/2026
$100k - $140k
Junior
Bachelor's, Master's
Redmond, WA, USA
In PersonCompany shuttles run weekdays from select Seattle locations to the Redmond office.
Aerospace EngineeringPropulsion

About the job

Requirements
  • A bachelor's degree in mechanical engineering, electrical engineering, aerospace engineering, physics, or a related STEM field is required.
  • At least 1 year of hands-on hardware experience is required; experience from internships, clubs, or other hands-on extracurricular activities qualifies.
  • Candidates must be willing to work extended hours and weekends as needed for mission-critical deadlines.
  • The role requires physical effort, including extended sitting or standing and lifting and carrying materials or equipment up to 25 pounds unassisted.
Responsibilities
  • Develop and execute rigorous system-, thruster-, and component-level tests to evaluate hardware performance and survivability during the Starlink mission.
  • Own repeated test campaigns, including creating test plans, activating new systems, operating tests, reviewing data, and designing and fabricating test stands and diagnostic equipment.
  • Provide daily direction and instruction to technicians building test articles, fabricating test stands and equipment, integrating test articles, and executing test processes.
  • Develop and maintain test procedures, sequences, scripts, configuration files, and software.
  • Operate and troubleshoot data acquisition and control systems, wiring, and instrumentation, primarily using Beckhoff/TwinCAT data acquisition systems and Python-based test software.
  • Operate and troubleshoot electric thrusters and supporting equipment, including high-vacuum facilities, pressurized feed systems, avionics circuits, and thruster diagnostics.
  • Design, operate, and fabricate mechanical systems for thruster ground support, including test stand support structures, heat exchangers, vacuum pumps, tooling, valves, tubing, and transient-protection circuitry.
  • Use the scientific method in a research and development context to minimize unknowns and produce clear, actionable conclusions that inform propulsion-system reliability and performance improvements.
  • Manage schedules and deliverables for vehicle subsystem qualification testing; document and present results and conclusions clearly and explain technical details to broad audiences.
  • Operate and interpret electronic, mechanical, and plasma diagnostics, including oscilloscopes, current and voltage diagnostics, pressure transducers, gas flowmeters, and low-force thrust stands.
  • Develop processes that increase testing capability and rates while maintaining quality and rigor; automate repetitive test operations to improve efficiency and safety.
  • Anticipate and characterize system pitfalls and potential hazards, and collaborate with design engineers to resolve problems and improve test stands and flight hardware.
  • Analyze and review data using numerical data analysis tools to verify hardware operation and interpret test results.
  • Develop, maintain, and execute integration and testing processes, and collaborate with design engineers to improve hardware.
  • Collaborate with the hardware reliability team to lead experiments supporting anomaly investigations.
  • Collaborate with software teams to minimize differences between ground test and flight operations through safe, efficient, and readable software.
Desired Qualifications
  • A master's degree in mechanical or aerospace engineering, or equivalent experience.
  • Experience with production and test systems, including hands-on experience in a test or production facility, factory, or laboratory.
  • Experience with hardware automation software, including data acquisition setup and instrumentation networking with logic controllers.
  • Mechanical aptitude and experience.
  • Knowledge of or experience with aerospace structural, mechanical, or propulsion-system assembly and testing.
  • Ability to use test instrumentation and control components, including pressure transducers, thermocouples, resistance temperature detectors, strain gauges, accelerometers, flow meters, load cells, relays, solenoid valves, and basic circuits.
  • Ability to solve problems requiring technical analysis.
  • Ability to read and understand technical manuals, reports, and mechanical and electrical schematics.
  • Knowledge of hazardous systems and safety practices involving cryogenics, flammable materials, high voltage, and high pressure.
  • Knowledge of high-pressure system design and handling.
  • Experience using test instrumentation and control components.
  • Intermediate skill with Microsoft Windows operating systems.
  • Intermediate skill with Microsoft Office applications, including Excel, PowerPoint, Word, Outlook, and OneNote.
  • Intermediate to advanced skill with Python.
  • Novice skill with C and C++.
  • Novice skill with computer-aided design modeling; Unigraphics NX is preferred.
  • Novice to intermediate skill with MATLAB.

About the company

SpaceX builds and launches reusable rockets and spacecraft for NASA, the military, and companies, and it runs Starlink, a satellite internet service for homes and businesses. In 2020, its Dragon capsule became the first privately built spacecraft to carry astronauts to the International Space Station. Its Falcon 9 rocket lands its first stage so the booster can fly again, which cuts launch costs, while Starlink beams internet from low-orbit satellites to small dishes for a monthly fee. SpaceX also owns xAI, maker of the Grok chatbot and owner of the social network X, and is building Starship, a fully reusable rocket meant to carry people to the Moon and Mars. Elon Musk founded SpaceX in 2002, and it is based in Starbase, Texas.

Company Size

10,001+

Company Stage

IPO

Headquarters

Starbase, Texas

Founded

2002

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Simplify's Take

What believers are saying

  • Starlink demand keeps compounding: subscribers doubled to 12 million in the year to June 2026.
  • Room to grow: SpaceX listed 2,693 open roles in October 2026, over a third of them for Starlink.
  • Rivals rent its AI supercomputers: Claude maker Anthropic agreed in May 2026 to pay SpaceX $1.25 billion a month.

What critics are saying

  • Stock grants swing hard: shares closed between $108 and $211 in the four months after the June 2026 IPO.
  • Expect long weeks: 1,724 of SpaceX's 2,693 job posts in October 2026 mention extended hours and weekend work.
  • AI spending outruns sales: SpaceX put $15.8 billion into AI data centers in the June 2026 quarter, double its revenue.

What makes SpaceX unique

  • SpaceX is the world's busiest launcher by far: its 165 orbital launches in 2025 were nearly double China's total.
  • Starlink carries the profits: it earned $1.7 billion in the June 2026 quarter, while rockets and AI lost $1.8 billion.
  • Elon Musk has the final say: super-voting shares give him about 82% of shareholder votes after the June 2026 IPO.

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Benefits

  • Benefits and Perks - Our employees' well-being is important to us and essential to our capacity to do extraordinary things. We offer a wide variety of programs to support the health, wellness, and financial security of our employees and their families.

Growth & Insights and Company News

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CNBC
Oct 23rd, 2026
SpaceX books $561M gain on Boring Co. stake, lifting quarterly net income to $4B

SpaceX booked an unrealized investment gain of $561 million in the third quarter from its stake in Elon Musk's Boring Co., it said in a filing with the Securities and Exchange Commission (SEC) on Thursday. The gain made up more than half of SpaceX's "other income" and lifted net income to just over $4 billion. Boring Co. began inside SpaceX in 2017 and spun out a year later. Last month, it raised $3 billion at a $23 billion valuation, backed by the United Arab Emirates and longtime Musk supporters. Its only public tunnels are in Las Vegas. It also plans a Nashville project and more than 150 kilometres (93 miles) of tunnels in the UAE. SpaceX also bought $151 million of Tesla Megapack energy storage systems in the quarter.

Yahoo Finance
Oct 23rd, 2026
Musk eyes 2028 Terafab chip output as SpaceX Q3 revenue jumps 161% to $14.58B

SpaceX chief executive officer Elon Musk said the company aims for volume chip production at its Terafab plant in the third or fourth quarter of 2028. He called the timeline an "aspiration" and "very aggressive." Speaking on the third-quarter earnings call, Musk said SpaceX hopes to have a test chip working around May or June next year at its research fab in Austin, Texas. He said it has "some significant potential breakthroughs in chip fabrication" but declined to elaborate: "Let's not give away the shop here." SpaceX reported third-quarter revenue of $14.58 billion, up 161% and above estimates of $12.94 billion. Earnings were 35 cents per share against expectations of 12 cents. Capital expenditures totalled $19.6 billion, and the company expects $35 billion to $40 billion in the fourth quarter.

Yahoo Finance
Oct 22nd, 2026
SpaceX shares fall 9.1% on AI funding worries and Tesla merger uncertainty

Space Exploration Technologies Corp. (SpaceX) shares fell 9.1% on Thursday, October 22, as concerns over AI funding and a possible Tesla merger weighed on the stock. The S&P 500 and Nasdaq Composite dropped 1.2% and 2.6%, respectively. SpaceX's quarterly report showed revenue growth of 161% but capital spending of more than $16 billion. Management projected another $35 billion to $40 billion in the fourth quarter. With negative free cash flow, the company will likely need to borrow more, and higher oil prices could push borrowing costs up. Reuters reported that some people involved in the Tesla talks fear a merger endorsement by Elon Musk would bring unwanted scrutiny and delays. Others worry a deal would hurt SpaceX shareholders. The talks remain preliminary, with no terms set.

Yahoo Finance
Oct 22nd, 2026
Google pays SpaceX $11B a year for xAI compute, raising concentration risks

Google is paying SpaceX $920 million a month, or $11 billion a year, to lease xAI's cloud infrastructure through 2029. The deal gives it continuous access to a cluster of roughly 110,000 Nvidia graphics processing units (GPUs). Google held 15% of the global cloud market in the second quarter of 2026, behind Amazon Web Services at 28% and Microsoft Azure at 20%, according to Synergy Research Group. It could not expand fast enough to meet demand for Nvidia-powered computing. Buying the chips would have cost $3.3 billion to $4.4 billion, but Google would also have faced years of waiting for power connections, plus high running costs. Alphabet owns a 4%-5% stake in SpaceX. The risks: Google is funding a future cloud rival, and the cluster sits in centralised xAI facilities in Tennessee, where outages could hit many tenants.

Yahoo Finance
Oct 22nd, 2026
World's six richest lose $130B as AI spending fears hit tech stocks

The world's six richest people lost a combined $130 billion on Thursday as tech stocks fell on renewed doubts about returns on AI infrastructure spending. Elon Musk lost $74 billion, bringing his net worth to $914.7 billion, as SpaceX shares sank nearly 9%. Investors weighed a $35 billion cash-flow gap and Musk's confirmation that SpaceX is considering a merger with Tesla. Tesla fell 2%, after it cut its full-year capital expenditure guidance to $20 billion from over $25 billion. Mark Zuckerberg lost $18 billion as Meta fell 8%. The company raised the low end of its capital spending forecast by $5 billion, to $135 billion to $145 billion. Jeff Bezos lost $11 billion as Amazon fell nearly 5%. Larry Page and Sergey Brin lost a combined $15 billion, and Michael Dell lost $12 billion as Dell Technologies dropped 7%.