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Sr. Full Stack Application Engineer
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Our client is seeking a Sr. Full Stack Application Engineer in Buena Vista, FL
Added 18 mins ago
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Power Electronics Engineer
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- $210,000 to $270,000 USD / year
- Test vendor hardware and data against your own models, and give the program lead the technical evidence behind each make, co-develop or buy call.
Added 20 mins ago
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Added 28 mins ago
Associate Software Engineer, Fleet Support & Automation
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Added 28 mins ago
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Added 39 mins ago
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Added 39 mins ago
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Added 43 mins ago
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Staff Machine Learning Engineer III
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Added 49 mins ago
Staff Machine Learning Engineer III
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- $103,200 to $161,250 USD / year
…committed, professional, and forward-thinking team but also to lead in the design and implementation of complex manufacturing processes and transform broad concepts into structured…
Added 1 hour ago
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Added 1 hour ago
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Lead and implement custom routing and L2/L3 control and data distribution protocols that incorporate mission critical network security, quality of service and dynamic communications…
Added 1 hour ago
Software Engineer II - Embedded Networking, Amazon Leo
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Senior Software Engineer - Embedded Networking, Payload Network Software Team
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- $140,000 to $175,000 USD / year
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Added 1 hour ago
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- $115,000 to $155,000 USD / year
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Founding Engineer
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Added 1 hour ago
Senior Software Support Engineer
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Added 1 hour ago
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Added 1 hour ago
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Radiation Effects Engineer
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Remote (excluding ND, VT, or RI), AZ · Tempe, AZ · Carlsbad, CA · Duluth, GA
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We have an exciting new opportunity for a Radiation Effects Engineer to join our Viasat Government team! You’ll work in a collaborative and inclusive environment that values diverse…
Added 1 hour ago
Senior Software Support Engineer
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RF Design Engineer – Next-Gen Wireless
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Fluidstack

Power Electronics Engineer

Austin, TX, United States
Phoenix, AZ, United States

$210,000 to $270,000 USD / year

Apply on jobs.ashbyhq.com About employer

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Job details

Pay: $210,000 to $270,000 USD / year
Posting language: English
Posted: Nov 11, 2026

Original job description

ABOUT FLUIDSTACK

We exist to make humanity more free. For most of human history, you farmed or you starved. Technology gave people more time for the things they wanted to do, instead of things they had to do. Powerful AI will be the biggest lever for human choice we've ever built - but only if models are aligned with what humanity actually wants. There are groups building AI who don't share these goals. Whoever deploys frontier compute infrastructure fastest will decide whether AI expands human freedom or shrinks it.

We're singularly focused on delivering 10 to 100s of GWs of compute faster than anyone else, rethinking every layer of the stack. We acquire power, design and build data centers, and operate them - with teams spanning hardware and software. Speed and scale are our key differentiators. Come be a part of building civilization-scale infrastructure for AI.

We hire people who care deeply about this problem space. If that is you, please apply!

HOW WE OPERATE

Be a barrel. Full autonomy. Own things end to end, take on scope without being asked, no permission required to operate outside your core role.
Insane urgency. We drive everything forward as fast as possible.
Reason from first principles. Challenge every assumption. Zero analogy thinking, no egos, the best idea wins.
Love of the game. The frontier of AI is the most interesting problem of our time. We put in long hours at high intensity to push the frontier forward.
Build something that actually matters. If you're going to spend your time, spend it on something that matters to the world.

THE PRODUCT ENGINEERING TEAM

Product Engineering builds the power and cooling systems that let Fluidstack deliver gigawatt-scale AI data centers faster and denser than the grid-standard supply chain allows. The SST group is designing solid-state transformers as a core building block of that power architecture.

Examples of key problems the team is working on

Architect a medium-voltage solid-state transformer that can be manufactured, serviced, and scaled across gigawatt-scale campuses, not just demonstrated in a lab.
Define the interface between the SST and the MVDC distribution system, including protection, control boundaries, and fault behavior.
Build a semiconductor and magnetics supply strategy that survives a thin 10kV SiC market over a multi-year horizon.
Take converter hardware from topology selection through working prototypes on a schedule that data center construction actually depends on.

ROLE SCOPE

Design the SST cell and block in detail: converter implementation, component selection, magnetics interface, and loss and thermal budgets for a 5 MW block on a medium-voltage DC bus.
Simulate, build and bring up the first cell prototypes with the PCB, firmware and test engineers, and debug them at full voltage and power.
Turn the program's architecture decisions into a buildable design: schematics, design calculations, and the technical sections of the SST specification.
Test vendor hardware and data against your own models, and give the program lead the technical evidence behind each make, co-develop or buy call.
Carry the design through cell, block and pilot-unit design reviews, closing every open loss, thermal and insulation item before the next build.

WHAT WE'RE LOOKING FOR

The below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly, tell us where you would. https://jobs.ashbyhq.com/fluidstack/05c2e69c-42f9-4fcb-9cf0-a467aaf98f1c

You've hands-on developed and validated high-power or medium-voltage power converters at the lab bench, going far beyond writing technical requirements.
You've engineered isolated DC-DC converters utilizing 1.7 kV+ SiC devices and can rigorously justify your efficiency calculations.
You've guided conversion systems from initial simulation models through hardware bring-up and full qualification testing.
You've collaborated directly across PCB, controls, and magnetics domains to balance architectural trade-offs across the unit.
You've identified hardware bugs during bench evaluation and resolved them in subsequent board iterations.
Bonus: Solid-state transformer products. Resonant converter topologies (DAB, LLC, CLLC). Circuit simulation. SiC voltage derating. Power conversion safety standards.

We are committed to pay equity and transparency.

Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.

Applicant Privacy Notice https://fluidstack.io/legal/applicant-privacy-notice AI Screening Notice https://fluidstack.io/legal/ai-screening-notice Ashby Bias Audit https://fluidstack.io/legal/ashby-bias-audit

You will receive a confirmation email once your application has successfully been accepted. If there is an error with your submission and you did not receive a confirmation email, please email careers@fluidstack.io with your resume/CV, the role you've applied for, and the date you submitted your application-- someone from our recruiting team will be in touch.

Work requirements

Jobs in the United States