Jobs in the United States

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Added 9 mins ago
Sr. Full Stack Application Engineer
Hays
FL
Partner with designers, product managers, and data engineers to translate design concepts into functional, high-performance web applications
Added 17 mins ago
Member of Technical Staff, Security
Sieve
San Francisco, CA
All roles at Sieve require you to be onsite in San Francisco 5 days per week.
Added 21 mins ago
G
Manufacturing Engineer
GPAC
Wamego, KS
- $87,000 to $98,000 USD / year
Troubleshoot product design and manufacturing issues while implementing effective solutions.
Added 21 mins ago
G
Manufacturing Engineer
GPAC
Leonardville, KS
- $87,000 to $98,000 USD / year
Troubleshoot product design and manufacturing issues while implementing effective solutions.
Added 21 mins ago
G
Manufacturing Engineer
GPAC
Olsburg, KS
- $87,000 to $98,000 USD / year
Troubleshoot product design and manufacturing issues while implementing effective solutions.
Added 26 mins ago
R
Staff Software Engineer, Revenue & Billing
Rillet
San Francisco, CA
- $240,000 to $300,000 USD / year
- Partner with product, design, accounting experts, and customer-facing teams to make sound tradeoffs and deliver work that solves real customer problems.
Added 27 mins ago
F
Magnetics Engineer, Medium-Frequency Transformers
Fluidstack
Austin, TX · Phoenix, AZ
- $210,000 to $270,000 USD / year
…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…
Added 27 mins ago
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Controls and Firmware Engineer, Power Electronics
Fluidstack
Austin, TX · Phoenix, AZ
- $210,000 to $270,000 USD / year
…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…
Added 27 mins ago
F
Power Electronics Engineer
Fluidstack
Austin, TX · Phoenix, AZ
- $210,000 to $270,000 USD / year
…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…
Added 27 mins ago
F
DC Power Systems and Protection Engineer
Fluidstack
Austin, TX · New York, NY · San Francsisco, CA · Seattle, WA
- $210,000 to $270,000 USD / year
…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…
Added 27 mins ago
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Test and Validation Engineer, High Voltage
Fluidstack
Austin, TX
- $210,000 to $270,000 USD / year
…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…
Added 27 mins ago
F
PCB Design Engineer, Power Stage Hardware
Fluidstack
Austin, TX · New York, NY · San Francsisco, CA · Seattle, WA
- $210,000 to $270,000 USD / year
- Bring up boards on the bench with the technicians and test engineer, and close design spins from prototype cells to pilot units.
Added 27 mins ago
F
Mechanical and Thermal Engineer, Power Electronics
Fluidstack
Austin, TX · New York, NY · San Francsisco, CA · Seattle, WA
- $210,000 to $270,000 USD / year
…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…
Added 29 mins ago
Sr. Field Application Engineer
Bosch Group
Sunnyvale, CA
Candidates must live within commutable distance from the Bosch Sunnyvale, CA facility and be available to come into the office weekly (or as required)
Added 35 mins ago
Electrical Engineer
IPG
Marysville, MI
Electrical Engineering Design and Product Development
Added 37 mins ago
Lead Engineer - Balance of Station (BOS) SME
Duke Energy Progress, LLC
Charlotte, NC
The Lead Engineer is at the specialist level of the Engineering classification hierarchy. Employees at this level solve complex problems, manage work, and provide leadership to others in…
Added 38 mins ago
Software Engineer II- Full-stack Developer
Deloitte
Saint Louis, MO
Engineering as a Service provides complete design, implementation, and technology operations, leveraging our core engineering expertise. We transform engineering teams, modernize…
Added 38 mins ago
Software Engineer II- Full-stack Developer
Deloitte
Kansas City, MO
Engineering as a Service provides complete design, implementation, and technology operations, leveraging our core engineering expertise. We transform engineering teams, modernize…
Added 48 mins ago
Staff Site Reliability Engineer
Jobgether
Remote, United States
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Staff Site Reliability Engineer based in the United States.
Added 48 mins ago
Senior Data Engineer
Jobgether
Remote, United States
The Senior Data Engineer will design, build, and operate the core data infrastructure powering advanced blockchain intelligence and analytics products.
Added 49 mins ago
CP
Advanced Solutions 5G RF Engineer
Cellco Partnership
Basking Ridge, NJ · Irving, TX · Cary, NC · Temple Terrace, FL
- $74,000 to $142,000 USD / year
As the Senior 5G RF Engineer for the WCC Advanced Solutions Team, you will serve as the primary RF engineering resource responsible for designing private LTE/5G and in-building systems…
Added 1 hour ago
BS
Engineering Leader - Optical Communications
Bright Silicon Technologies
Pleasanton, CA
- $175,000 to $275,000 USD / year
…directing light. We are experts in precision engineering, optical design and product development who are delivering technological breakthroughs to revolutionize photonics. The Lightfield…
Added 1 hour ago
Associate, Electrical Engineer
L3Harris Technologies
Ashburn, VA
As an Associate Electrical Engineer, you will assist experienced engineers with assigned design, test, and integration tasks for circuit card assemblies (CCAs) containing analog, digital,…
Added 1 hour ago
Field Engineer - Network Deployment
The GOR Group
Abilene · Abilene, TX
This position works in partnership with operations and across multiple levels and departments to plan, design, configure, deploy, and troubleshoot client network installations. The Project…
Added 1 hour ago
Industrial Engineer
Saber Power Services
Baton Rouge, LA
The Industrial Engineer is responsible for driving manufacturing efficiency, productivity, quality, and continuous improvement across the Protective Relay Panel, Power Quality Capacitor…

Fluidstack

DC Power Systems and Protection Engineer

Austin, TX, United States
New York, NY, United States
San Francsisco, CA, United States
Seattle, WA, United States

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

Apply on jobs.ashbyhq.com About employer

Applications open in a new tab.

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

Own protection and grounding for every zone, from a bipolar medium-voltage DC bus carrying hundreds of megawatts over miles to the 1,500 V solar and battery bus and the 800 V racks.
Specify, and where no product exists co-develop with vendors, the DC breakers, fuses, and disconnects for these buses, from medium-voltage feeders to hall buses carrying tens of thousands of amps.
Design fault clearing without conventional breakers where possible, using SSTs that stop switching within microseconds, isolators that open at zero current, and fuses only where paralleled units can backfeed, and prove it in electromagnetic transient studies.
Turn fault studies into requirements every SST, battery converter, and breaker vendor must meet: fault current contribution, interruption time, and coordination settings.
Run live short-circuit and interruption tests on an energized multi-SST bus that prove the design to insurers, lenders, and the authority having jurisdiction.

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 designed protection for a medium- or high-voltage DC system (MVDC, HVDC, shipboard, rail, or DC microgrid) and seen it through commissioning.
You've built and run electromagnetic transient models of converter-dominated systems, and used them to set breaker, fuse, or relay requirements.
You've made a grounding call (solid, resistance, or floating) and defended its trade-off between fault current and insulation stress.
You've specified, designed, or qualified DC breakers, fuses, or switchgear for medium-voltage or high-current DC, and tested them through interruption.
You've written protection requirements a converter or breaker vendor had to redesign to meet.
You find the failure case others missed and can show it in a single simulation plot.
Bonus: DC interruption technology (solid-state and hybrid breakers, high-speed DC fuses). EMT simulation (PSCAD/EMTDC, EMTP, PLECS, MATLAB/Simulink). Protection coordination and relay settings (ANSI device functions, IEC 61850). MVDC standards (IEEE 1709). Professional Engineer license (PE).

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