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Sigma Science

Our Leadership Team

Gilbert Torres

President and Chief Executive Officer (CEO)

Gil is responsible for establishing and executing Sigma’s corporate strategy and setting the vision, values, and culture for our employees. Prior to joining Sigma he held leadership roles in Nuclear Operations, Engineering, Nuclear Safety and Nuclear and High Hazard Packaging and Transportation. He has a Master of Science degree in Industrial Engineering, a Bachelor of Science in Mechanical Engineering. Gil is passionate about attracting and retaining the highest caliber of technical experts by providing employees with rewarding and challenging career opportunities.

In McCann

Executive Vice President

In is responsible for the successful execution of Sigma Science’s client portfolio along with the day-to-day operations of the company. He brings over 20 years of engineering expertise, having delivered over $600M of technical systems to the DoD, DOE, NNSA, and the Intelligence Community in support of the Nuclear Non-Proliferation, Counter-Proliferation, Counter-Terrorism, and U.S. wartime missions. In holds a Master of Science degree in Computer Science and a Bachelor of Science degree in Biochemistry. In his spare time, In enjoys spending time traveling with his family and supporting the local homeless community in Albuquerque.

Ann Riedesel

Director of Business Development

Ann is responsible for Sigma’s marketing, communications, and company growth. She has more than 30 years of experience in corporate communications, marketing, public relations, and strategic planning. She has worked with large government contractors as well as small businesses. She is a member of the Waste Management Symposium Planning and Advisory Committee and is actively involved in promoting science, technology, engineering, and mathematics (STEM) education initiatives. Ann has a Bachelor of Science degree in Organizational Communication.

Kimberly Pena

Chief Financial Office

Kimberly manages the corporate finances of Sigma. She brings more than 30 years of experience in finance, accounting, and regulatory compliance to. She has a Bachelor of Business Administration degree, with a concentration in Accounting, and is a Certified Public Accountant. degree, with a concentration in Accounting, and she is a Certified Public Accountant. Kimberly was inducted into the University of New Mexico (UNM) Anderson School of Management Hall of Fame in 2013, and she was also a nominee for the San Diego Business Journal’s 9th Annual Women Who Mean Business Award. She is a former Trustee of the University of New Mexico Foundation Board.