AmTrust has a new chief information officer, an executive chosen from within the company. Greenlight Capital Re hired an outside executive to fill the newly created position of chief operating officer.

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AmTrust Financial Services Inc. appointed Ariel Gorelik as a senior vice president and chief information officer.

Gorelik was previously chief operating officer of AmTrust’s AMT Warranty division. In his new position, he’ll lead AmTrust’s global IT organization and has a mission of making sure AmTrust leads with technology innovation, capitalizing on technology products to help AmTrust fulfill its business goals. He replaces Christopher Longo, who continues as an executive vice president and chief operating officer, and helped guide development at AmTrust as the company’s chief information officer since 2006.

Gorelik will report to AmTrust Chairman and CEO Barry Zyskind.

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Greenlight Capital Re hired Michael Belfatti to fill the newly created position of chief operating officer.

Belfatti will handle oversight of the company’s pricing, actuarial and risk management functions, and also spearhead data collection, analytics and technology efforts for the specialist P/C reinsurer. Also, as a member of the executive team, he’ll help with the development and execution of Greenlight Re’s overall strategy. Belfatti will report to Greenlight Re CEO Simon Burton.

Previously, Belfatti was founder and CEO of M.J. Belfatti & Company, a consulting firm that focused on insurance innovation, mergers and acquisitions and other operational and analytical projects. He has also held executive-level positions at Endurance Holdings Ltd. and Validus Holdings Ltd., among other previous jobs.

Sources: AmTrust Financial Services, Greenlight Capital Re