The register
The register lists Hivolt Capacitors Limited in Derry 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).
Hivolt Capacitors Limited is the registered name (Companies House number NI029851), a private limited company on the register since 1995. The registered office is at Maydown Industrial Estate, Derry, BT47 6UQ, BT47 6UQ. Its filed activity puts it in manufacturing and engineering. It has traded under other names before, including Hivolt Capacitors (ni) Limited, Cab Capacitors Limited.
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.