Soria will report to Sirius’s Bermuda CEO Warren Trace.
Previously, Soria served as vice president at QBE Re Bermuda, joining the company’s island property and casualty portfolios in 2014.
He has also worked as a reinsurance broker at both Willis Re and Aon Benfield.
Commenting on the appointment, Trace said: “I have known Erik Soria for nearly his entire career and am thrilled that we could bring on board a person of such high calibre.”
He added: “He brings to Sirius an extensive casualty background with an invigorating energy that complements nicely our group-wide efforts to expand into this line.”
Last year, Sirius expanded its writings in casualty reinsurance when Robert McFadden joined the New York office to lead the initiative.