The use case: how First Light Fusion deploys CircleCI
A lead scientist uses CircleCI to automate and test fusion reactor design workflows, including CAD geometry generation and neutronics simulations, treating the design process like a software project. CircleCI runs parameterized tests, supports SSH debugging of failed builds, and shows test stages through Insights.
In the customer’s words
I can use Insights from CircleCI to see all of the stages a test went through.Other companies using CircleCI
Customers across industries, with public evidence.
See all CircleCI customers
Go straight to the source
Based on CircleCI’s published case study. We check the public evidence; the results are reported by the vendor.
circleci.com- Source published
- Nov 12, 2026
- Last checked
- Nov 12, 2026
Open source capture What the story claims, and what we checked
What we compared with the page.
- The passage quoted aboveChecked
Copied word for word from the page, near the name of First Light Fusion.
- The publication dateChecked
Read from the page’s own metadata, never guessed.
- First Light Fusion uses CircleCIChecked
Confirmed line.
- The result itselfNot checked
We quote it; we did not measure it.
Once Shimwell decided to apply CI/CD to his design workflows, he tested the free versions of CircleCI and Travis CI. “The overhead of getting CircleCI up and running was just so much easier – I was up running tests in much less time,” he says.