The register
The register lists Caldwell Consulting Engineers Limited in Belfast as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
At Companies House the business is Caldwell Consulting Engineers Limited (company number NI050076), a private limited company incorporated in 2004, 22 years ago. Registered office: Unit 6 Forest Grove Business Park, Newtownbreda Road, Belfast, BT8 6AW, BT8 6AW. 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.