Bryan Lee serves as Chief Financial Officer and Treasurer at Five9, Inc., a leading provider of cloud contact center software. With over 25 years of experience in finance and accounting within the technology sector, Lee joined Five9 in March 2021 to lead the company's global financial strategy, investor relations, and treasury operations. A certified public accountant (CPA), he holds a Bachelor of Science in Business Administration from the University of California, Berkeley, and has a proven track record of driving financial excellence in high-growth SaaS environments. Prior to Five9, Lee was CFO at Guidewire Software from 2017 to 2021, where he oversaw the company's financial operations during a period of significant expansion, including multiple acquisitions and preparation for its transition to a public entity. Before that, he held the role of Senior Vice President of Finance and Principal Accounting Officer at BlackLine, Inc., contributing to its successful IPO in 2016 and subsequent growth as a public company. His earlier career included senior finance roles at Deloitte & Touche and Ernst & Young, honing his expertise in audit, compliance, and strategic financial planning. At Five9, Lee plays a pivotal role in supporting the company's mission to empower customer service through AI-driven cloud solutions. Under his leadership, Five9 has strengthened its financial position, optimized capital allocation, and delivered consistent revenue growth, enabling sustained investment in innovation and market expansion. Lee's strategic foresight continues to position Five9 for long-term success in the competitive contact center industry.