# Mechanical Engineer, Thermofluids at Fluidstack

- Company: Fluidstack
- What the company does: Fluid State is a human resource firm that provides career management, customer services, recognition of protagonism, and help desk services. Backed by Seedcamp.
- Company website: https://fluidstack.io
- Type: Startups
- Level: Mid level
- Location: Austin, TX
- Work setup: Remote
- Pay: $210K to $260K base salary per year (USD)
- Posted: 2026-09-10
- Apply by: 2026-10-25
- Apply: https://jobs.ashbyhq.com/fluidstack/2d717643-6e6b-4429-be6b-208baa7a627f
- Page: https://www.1752.vc/careers/jobs/fluidstack-mechanical-engineer-thermofluids/

## About the role

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. Build something that actually matters. If you're going to spend your time, spend it on something that matters to the world.

## What they'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
- You’ve built a thermodynamic cycle model from fluid properties up and defended its assumptions to someone actively trying to break it
- You’ve sized real heat exchangers against published correlations, and you’ve caught a case where the correlation belonged to a different geometry than the one in front of you
- You’ve calibrated a model against a machine datasheet or test data and reported the gap honestly rather than tuning until it disappeared
- You’ve written the analysis that changed a design decision, in a form that people who never ran the code could read and act on
- You’ve sized a relief path and been the one who signed off that the system was protected

Tags: Development