Founder and CEO
Roselle is a serial entrepreneur. Before founding KeyCaliber, she was an EIR here at Lytical Ventures. Her first venture-backed startup was Uplevel Security, an incident response technology company, where she was a co-founder and CEO. The company was acquired by McAfee in 2019. Before founding Uplevel, Roselle was the Cybersecurity Operations Branch Chief at the Executive Office of the President. She managed the 24x7 Security Operations Center that protected and defended the White House’s network.
Prior to the Executive Office of the President, Roselle managed daily operations activities for cybersecurity analysis teams at the Department of Homeland Security’s US-CERT and was instrumental in building two cyber threat intelligence platforms: one used internally by all of the US-CERT analysts and one used by over 50 federal departments and agencies. Roselle holds a BS in engineering from Princeton.