Jobs in the United States

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Added 7 mins ago
Sr. Full Stack Application Engineer
Hays
FL
Our client is seeking a Sr. Full Stack Application Engineer in Buena Vista, FL
Added 7 mins ago
Data Solutions Engineer
Hays
FL
Our client is seeking a Data Solutions Engineer in Tampa, FL/Hybrid
Added 15 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 19 mins ago
G
Manufacturing Engineer
GPAC
Wamego, KS
- $87,000 to $98,000 USD / year
We are seeking a motivated Manufacturing Engineer to join an established manufacturing organization. This individual will be responsible for designing, developing, testing, and continuously…
Added 19 mins ago
G
Manufacturing Engineer
GPAC
Leonardville, KS
- $87,000 to $98,000 USD / year
We are seeking a motivated Manufacturing Engineer to join an established manufacturing organization. This individual will be responsible for designing, developing, testing, and continuously…
Added 19 mins ago
G
Manufacturing Engineer
GPAC
Olsburg, KS
- $87,000 to $98,000 USD / year
We are seeking a motivated Manufacturing Engineer to join an established manufacturing organization. This individual will be responsible for designing, developing, testing, and continuously…
Added 19 mins ago
O
Firmware Engineer, Robotics
OpenAI
San Francisco, CA
- $380,000 to $445,000 USD / year
As a Firmware Engineer, you will define and drive the architecture of embedded systems for next-generation hardware products. You will own foundational firmware decisions across real-time…
Added 24 mins ago
R
Staff Software Engineer, Revenue & Billing
Rillet
San Francisco, CA
- $240,000 to $300,000 USD / year
…and trust their numbers. We're looking for a Staff Software Engineer to be a hands-on technical leader on our Revenue, Accounting & Tax (RAT) team, led by Victoria…
Added 25 mins ago
F
Magnetics Engineer, Medium-Frequency Transformers
Fluidstack
Austin, TX · Phoenix, AZ
- $210,000 to $270,000 USD / year
…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…
Added 25 mins ago
F
Controls and Firmware Engineer, Power Electronics
Fluidstack
Austin, TX · Phoenix, AZ
- $210,000 to $270,000 USD / year
…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…
Added 25 mins ago
F
Power Electronics Engineer
Fluidstack
Austin, TX · Phoenix, AZ
- $210,000 to $270,000 USD / year
…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…
Added 25 mins ago
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DC Power Systems and Protection Engineer
Fluidstack
Austin, TX · New York, NY · San Francsisco, CA · Seattle, WA
- $210,000 to $270,000 USD / year
…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…
Added 25 mins ago
F
Test and Validation Engineer, High Voltage
Fluidstack
Austin, TX
- $210,000 to $270,000 USD / year
…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…
Added 25 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
…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…
Added 25 mins ago
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Mechanical and Thermal Engineer, Power Electronics
Fluidstack
Austin, TX · New York, NY · San Francsisco, CA · Seattle, WA
- $210,000 to $270,000 USD / year
…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…
Added 34 mins ago
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Senior Core Infrastructure Engineer
Oracle
Nashville, TN
- $79,200 to $209,500 USD / year
…operability. Delivers features and load/performance tests; leverages data plane platforms and distributed state tools for high-volume retrieval, storage, and processing; and reviews peers’…
Added 35 mins ago
Associate Software Engineer, Fleet Support & Automation
Intramotev
St. Louis, MO
…- and most of those issues should not pull a core software engineer off their work. We are seeking an Associate Software Engineer, Fleet Support & Automation to be the first software…
Added 35 mins ago
MEP Superintendent
Turner Construction Company
New York, NY
…the 3D/4D model of the project to extract visuals, clashes, data and additional information to clearly and concisely convey clashes and design challenges. Convert point clouds data of…
Added 36 mins ago
Software Engineer II- Full-stack Developer
Deloitte
Saint Louis, MO
Software Engineer II, AI & Engineering/Engineering as a Service AI & Engineering leverages cutting-edge engineering capabilities to build, deploy, and operate integrated/verticalized sector…
Added 36 mins ago
Software Engineer II- Full-stack Developer
Deloitte
Kansas City, MO
Software Engineer II, AI & Engineering/Engineering as a Service AI & Engineering leverages cutting-edge engineering capabilities to build, deploy, and operate integrated/verticalized sector…
Added 38 mins ago
Engineer I - IV
State of Delaware
Dover, DE
Applicants must have education, training and/or experience demonstrating competence in each of the following areas:
Added 43 mins ago
Senior Data Engineer, Operational Excellence - EDA Infrastructure
NVIDIA USA
Remote, United States
AI Infrastructure Engineers at NVIDIA build the systems, tooling, and data infrastructure that enable operation of our AI cloud services. We are enabling engineering teams to innovate while…
Added 46 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 46 mins ago
J
Senior Network Engineer
Jobgether
Remote, United States
- $97,500 to $162,500 USD / year
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Network Engineer based in the United States.
Added 46 mins ago
Senior Data 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 Senior Data Engineer based in the United States.

Fluidstack

Controls and Firmware Engineer, Power Electronics

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

Write the control firmware for every SST cell and block: modulation, closed-loop voltage and current control, and voltage sharing across dozens of series-stacked cells.
Build the fast protection path that detects a fault and shuts the converter down within microseconds, from sensing to safe state.
Sequence startup, precharge, cell bypass, and the reconfiguration of the output from 800 V to 1,500 V.
Connect cell controllers to the block master and the site control system across isolation barriers, with telemetry operators can act on.
Prove the firmware on hardware-in-the-loop rigs before it runs on a high-voltage prototype.

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 written control firmware that runs a power converter at full power, and debugged it on the bench with a scope in hand.
You've controlled resonant or dual active bridge converters, or balanced series-connected cells.
You've built protection logic in an FPGA or DSP that trips in microseconds and fails safe.
You've used hardware-in-the-loop or model-based design to catch bugs before they reached hardware.
You keep firmware in version control with reviews and automated tests, and can show the release history of something you shipped.
Bonus: Embedded targets for power control (TI C2000, Xilinx or Intel FPGAs). Model-based design (MATLAB/Simulink, PLECS). Hardware-in-the-loop platforms (Typhoon HIL, OPAL-RT). Industrial communication (CAN, EtherCAT, fiber links). Functional safety practice (IEC 61508, MISRA C).

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