Barry Zwarenstein serves as the Chief Financial Officer at Five9 Inc., a leading provider of cloud contact center software. With a robust background in finance and technology, Zwarenstein has been instrumental in guiding Five9 through significant growth and strategic initiatives. Prior to joining Five9 in 2017, he held various senior finance roles at technology companies, including being the CFO at RingCentral, where he played a key role in the company's expansion and its successful IPO in 2013. His experience in scaling technology firms and navigating public markets has been a valuable asset to Five9. At Five9, Zwarenstein oversees all financial aspects of the company, including financial planning and analysis, accounting, treasury, and investor relations. Under his leadership, Five9 achieved a successful IPO in 2019, marking a significant milestone in the company's journey. His strategic financial management has been crucial in driving Five9's growth trajectory, helping the company to consistently meet and exceed financial targets. Zwarenstein's focus on operational efficiency and his ability to forge strong relationships with investors have solidified Five9's position as a leader in the cloud contact center industry. In addition to his professional achievements, Zwarenstein is known for his commitment to fostering a culture of transparency and accountability within the finance team at Five9. He holds a Bachelor of Science degree in Business Administration from the University of Southern California and an MBA from the Wharton School of the University of Pennsylvania. His educational background, combined with his extensive experience in the tech sector, makes him a pivotal figure in Five9's ongoing success and future growth strategies.