The register
The register lists Energy Systems Catapult in Birmingham as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Energy Systems Catapult Limited, number 08705784, incorporated 2013: 13 years of filings behind the name. Registered office: 7th Floor 18 The Priory Queensway, Birmingham, B4 6BS, B4 6BS. By its SIC codes the business is in professional and technical services.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.