The register
The register lists ScaleXP Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
At Companies House the business is Scalexp Ltd (company number 11447363), a private limited company incorporated in 2018, 8 years ago. The registered office is at 39 Pangbourne Avenue, London, W10 6DJ, W10 6DJ. Its filed activity puts it 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.