The register
The register lists Effisus UK Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Companies House lists it as Effisus UK Ltd, number 13099434, incorporated 2020: 5 years of filings behind the name. The registered office is at Pegasus, Unit 21 Battersea Business Centre, 99 - 109 Lavender Hill, London, SW11 5QL, SW11 5QL. By its SIC codes the business is in construction.
For a candidate this means one less obstacle: Effisus UK Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.