Leadership Team

Our team is dedicated to helping people live healthier and safer lives.

Shari founded and led Avant Healthcare Professionals for 18 years, achieving 38% CAGR and $175M in revenue by 2021. Avant earned many awards, Inc. 5000 (7x), Inc. 250 regional (2x), and EY Entrepreneur of the Year Florida 2017. Shari raised $50M+ in angel, private equity, and strategic investments before exiting in July 2021. She serves on several boards, including Nemours Children Health FL.

Shari Costantini

CEO

Spence has extensive experience managing financial, legal, and operational functions for high-growth companies. As Avant’s CFO from 2011 to 2019, he partnered with Shari to drive success. A CPA with a background at Ernst & Young, his expertise includes financial forecasting, workflow optimization, process improvement, contract negotiation, and investor relations.

Spencer Lloyd

Chief Financial Officer

Dr. Lestage, with a Ph.D. in Polymer Science, has 20 years of experience in infection control technologies. She held leadership roles at Clorox and Byoplanet International. In 2023, she founded CleanOps Collective, providing strategic support to cleaning industry startups and mid-size firms in product development, market strategies, and operations across North America and Europe.

Dr. Keri Lestage

Director of Strategic Partnerships

Dr. Christopher Coughlin earned a Ph.D. in Polymer Science from the University of Southern Mississippi. Chris has 35+ years of experience working across the US government, industry, and academia in research, engineering, and regulatory roles. He specializes in polymer chemistry/engineering for defense and consumer products.

Dr. Christopher Coughlin

VP of Engineering

Michele is a skilled administrative professional with 20+ years of experience supporting C-Suite and senior executives. Her expertise in front-office management ensures smooth workflows and enhanced office functionality. She has worked across healthcare staffing, higher education, and non-profits, contributing to executive success.

Michele Council

Office Manager

Kelly has a BS in Biology from Pennsylvania State University and an MS in Microbiology and Cell Science, which is in progress at the University of Florida. She is an expert in pathogen detection and vector-borne surveillance with the US Army of Public Health and microbiology and bio-stimulants in private industry.

Kelly Ager

Microbiology Manager