Jobs in the United States

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Added 1 min ago
Sr. Full Stack Application Engineer
Hays
FL
Mentor and guide other engineers in full-stack best practices, code quality, system design, and UI/UX design principles.
Added 13 mins ago
O
Firmware Engineer, Robotics
OpenAI
San Francisco, CA
- $380,000 to $445,000 USD / year
…they need. Progress is rapid, and based on a foundation of co-design between robotics hardware and ML…
Added 17 mins ago
R
Staff Software Engineer, Revenue & Billing
Rillet
San Francisco, CA
- $240,000 to $300,000 USD / year
The people who thrive at Rillet do not wait for assignments. They internalize the mission, design a strategy, and bring back results that are better, faster, and more creative than a…
Added 18 mins ago
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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 18 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 18 mins ago
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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 18 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
…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 18 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 18 mins ago
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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 18 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
…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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Senior Core Infrastructure Engineer
Oracle
Nashville, TN
- $79,200 to $209,500 USD / year
System Design & Architecture - System Scalability:
Added 28 mins ago
Electrical/I&C Component Engineer
Duke Energy Carolinas, LLC
York, SC
However, hybrid employees must live within a reasonable commute to their designated Duke Energy facility, not greater than 50 miles one way · Hybrid work arrangement: after onboarding, employees must work onsite at Catawba Nuclear Station at least two days per week, with two remote days
Added 28 mins ago
Electrical/Power Systems Engineer
Duke Energy Carolinas, LLC
York, SC
However, hybrid employees must live within a reasonable commute to their designated Duke Energy facility, not greater than 50 miles one way · Please note that in order to be considered for this position, you must possess all of the basic/required qualifications
Added 28 mins ago
Electrical/ I&C / Digital Process Systems Engineer
Duke Energy Carolinas, LLC
York, SC
However, hybrid employees must live within a reasonable commute to their designated Duke Energy facility, not greater than 50 miles one way · Hybrid work arrangement: after onboarding, employees must work onsite at Catawba Nuclear Station at least two days per week, with two remote days
Added 28 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 29 mins ago
Software Engineer II- Full-stack Developer
Deloitte
Saint Louis, MO
Software Engineer II, AI & Engineering/Engineering as a Service
Added 29 mins ago
Software Engineer II- Full-stack Developer
Deloitte
Kansas City, MO
Software Engineer II, AI & Engineering/Engineering as a Service
Added 39 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 39 mins ago
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Senior Network Engineer
Jobgether
Remote, United States
- $97,500 to $162,500 USD / year
The Senior Network Engineer will design, implement, and manage secure, scalable enterprise network infrastructures across hybrid cloud and on-premises environments.
Added 39 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 40 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 51 mins 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 54 mins 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 58 mins ago
Industrial Engineer
Saber Power Services
Baton Rouge, LA
Saber Power Services is a fully integrated electrical power system services firm providing end-to-end solutions across utility, renewable energy and battery storage, industrial,…
Added 1 hour ago
SI
Mechanical Design Engineer
SoLa Impact
Los Angeles, CA
- $70,000 to $90,000 USD / year
0 - 3 years of Mechanical Engineering industry experience required

Fluidstack

Mechanical and Thermal Engineer, Power Electronics

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

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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 mechanical and thermal architecture of the SST block: enclosure, busbars, cold plates, coolant loops, and a layout that fits megawatts of power electronics into a few cubic meters.
Get heat out of high-voltage parts, including transformers cooled through their insulation, while holding every creepage and clearance distance at tens of kilovolts.
Size the liquid cooling (glycol loops, heat exchangers, dielectric secondary loops) and close the thermal budget against measured losses at full power.
Design for manufacture, service, and transport: modules a technician can swap, enclosures rated for outdoor sites, and assemblies a contract manufacturer can build thousands of times.
Hand off drawings, tolerances, and test fixtures to suppliers, the test lab, and the certification body.

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 the enclosure and cooling for high-power converters (MV drives, inverters, SSTs, traction, or EV fast chargers) and shipped them.
You've laid out high-voltage busbars and conductors to meet creepage and clearance rules in a tight volume.
You've built liquid cooling for power electronics, from cold plates to heat exchangers, and matched your thermal models to test data.
You've designed parts for volume manufacture with a contract manufacturer and fixed what broke on the line.
You've designed hardware for outdoor or industrial sites: dust, humidity, vibration, and shipping loads.
Bonus: Thermal and flow simulation (CFD, Ansys Icepak, COMSOL). Mechanical CAD (SolidWorks, Creo, NX). Insulation coordination standards (IEC 60664, UL 840). Enclosure ratings (NEMA, IP). Design for manufacture and assembly (DFM, DFA).

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.

Apply on jobs.ashbyhq.com About employer

More about this job

Skills

Power electronics
CFD
Ansys
Dassault Systemes SolidWorks
PTC Creo
Siemens NX
Assembly

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Work requirements

Jobs in the United States