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About Us

At Duo, we combine security expertise with a user-centered philosophy to provide two-factor authentication, endpoint remediation and secure single sign-on tools for the modern era. It’s so simple and effective, you get the freedom to focus on your mission and leave protecting it to us.

Duo is built on the promise of doing the right thing for our customers and each other. This promise is as central to our business as the product itself. Our four guiding principles are the heart of this sensibility: Easy, Effective, Trustworthy, Enduring

Easy

As a company, we recognize that building the right kind of workplace is vital for building the right kind of products, so we start from within by empowering team members to innovate and lead.

For our customers, we design products that are a snap to get up and running, easy to maintain and don’t get in the way of you or your end users.

Effective

As a company, we support each other’s well-being, lead with compassion and promote diversity and inclusion.

For our customers, we build empathy for their needs and pain points by taking a people-first approach, from conducting extensive research with users to providing support that truly fosters peace of mind.

Trustworthy

As a company, we value learning together, focusing on the customer, mentoring next-gen tech talent and taking pride in doing the right thing.

For our customers, we build a resilient infrastructure, earn the endorsement of top-flight investors and recognize that we’re only as successful as you are.

Enduring

As a company, we plan for the future by investing in strong relationships, innovating and driving trends, and perpetually looking for ways to do better for ourselves and our community.

For our customers, we address today’s security issues while anticipating the challenges in years to come and working with intention to uphold our values as we grow.

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William Welch
President and Chief Operating Officer
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William Welch

William "Bill" Welch is a seasoned senior executive with more than 25 years experience leading global technology companies. As President and COO for Duo, Bill is charged with advancing the company’s long-term vision and global operations, as well as the strategy and acceleration of Duo’s go-to-market engine as the company continues to rapidly scale and expand internationally. Prior to Duo, Bill served as COO for cloud-based network security company Zscaler, where he led its global sales, channel, operations, customer care, and strategy. Before this, he was Vice President and General Manager for HP Software Americas, responsible for more than $2 billion in sales to Global 1000 organizations. He also previously served as Vice President of Sales Specialists in the Americas for Symantec, undertaking the integration of emerging technologies into Symantec’s product set and scaling the sales effort for high growth. Prior to Symantec, Bill held senior level management positions with Fortune 500 companies, including Oracle Corporation, Sun Microsystems, and BEA.

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Sydney Carey
Chief Financial Officer
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Sydney Carey

Sydney is an accomplished Chief Financial Officer with two decades of experience in public markets, corporate finance and strategy expertise. Prior to Duo, Sydney served as CFO for a number of high-growth private and public SaaS companies, including Apttus, ZScaler, MongoDB and TIBCO. Sydney is a Stevie Award Winner for Women in Business – Best Executive, and was named San Francisco Business Times’ Bay Area CFO of the Year. She holds a bachelor’s degree in Economics from Stanford University and is a passionate advocate for female leadership in the C-suite and women in finance, IT and STEAM education.

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Raffaele Mautone
Chief Information Officer
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Raffaele Mautone

In his various leadership roles, including the CIO for Duo, Raffaele has a consistent record of leading teams through successful acquisitions; strategic planning and implementation and deploying large, multi-tiered complex programs. At FireEye the IT organization that he grew proved themselves quickly with the delivery of 50 large multi-million dollar projects in a short period of time. In his previous roles, Raffaele’s experience in implementing marketing and sales strategies positioned the company for future growth. At McAfee Inc., as the Vice President of Worldwide Sales and Marketing Operations, his team deployed many applications and business process improvements needed to help with bookings, leads, new go-to-market programs and Master Data Management. Raffaele’s strategic thinking and effective leadership has been instrumental and paramount in his career as a IT, Sales and Operations professional. He attended Eastern Michigan University, where he earned a bachelor's degree in Communications.

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Neville Letzerich
Chief Marketing Officer
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Neville Letzerich

Neville oversees Duo’s dynamic marketing organization and is charged with telling the company’s unique security story to a worldwide audience. He has 20 years of executive experience heading global marketing teams and elevating industry-leading enterprise technology and cybersecurity brands. Neville has served as CMO for progressively growing companies such as HotSchedules and Forcepoint, LLC (formerly Websense), and leading marketing operations at BazaarVoice and the Information Intelligence Group within the EMC Corporation. Neville is based in Austin, Texas.

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Paul DiMarzo
EVP of Corporate Development
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Paul DiMarzo

Paul has more than 26 years of experience as a finance professional. Prior to heading corporate development at Duo, Paul was CFO, leading the company through record revenue growth and funding. He is a three-time CFO and has served in senior management for a number of venture capital-financed technology companies in Boston and Ann Arbor, including Abuzz Technologies, Rock.com, Assay Designs and Molecular Imaging. He was a member of the professional staff of Deloitte in Boston and was on the management team at Sodexho-Marriott through its initial public offering in 1996. Paul is a CPA and holds a bachelor’s degree in economics from Holy Cross College.

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Jim Cyb
SVP of Worldwide Sales
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Jim Cyb

Jim Cyb heads up worldwide sales for Duo Security. Cyb was most recently the Vice President of Sales at Zendesk, where he achieved 5x customer growth with 14x revenue growth leading up to the company’s Initial Public Offering in May 2014. Previously Jim served in senior roles in technical sales, products and marketing.

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Steve McElfresh
SVP of People
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Steve McElfresh

Steve leads Duo’s People team, which is responsible for all things related to employee experience, including hiring and growing diverse talent. He joins Duo from New Relic, bringing more than 19 years of global HR leadership experience, with a passion for building inclusive and organizationally enduring companies. Steve has been the CEO of two management consulting organizations, Chief HR officer for three technology companies, and a university professor. He has presented HR programs across North America, Europe, the Middle East, India and Singapore. Steve holds a J.D. from Santa Clara University, as well as a Ph.D. in Social/Organizational Psychology from Boston College.

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Ash Devata
VP of Products
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Ash Devata

Ash is responsible for product and Go-To-Market strategy at Duo. Most recently, he managed the enterprise solutions portfolio at RSA, which helped customers solve use cases in GRC, DLP, SOC, SIEM, security analytics and vulnerability management. Ash also helped build and launch more than a dozen cybersecurity products, including four $100M+ revenue products, at RSA, EMC and Cisco in the last ten years.

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Mike East
VP of Sales, EMEA
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Mike East

Mike leads Duo’s London-based EMEA business. With 27 years of IT and security experience, Mike previously held leadership positions at Symantec, Mandiant, FireEye and CrowdStrike. He is passionate about solving the security issues that companies and governments face on a daily basis from ever-increasing cyber security threats. During his time in the security industry, Mike has built strong relationships with government, analysts, press, partners and customers across the EMEA region.

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Mike Hanley
VP of Security
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Mike Hanley

Mike leads all security research, development and operations functions at Duo. Prior to Duo, Mike was a senior member of the technical staff at CERT/CC, working on applied R&D programs for the US Department of Defense and the Intelligence Community. He has a master’s degree in Information Security Policy and Management from Carnegie Mellon University and a bachelor’s degree in Economics from Michigan State University.

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Peter Katz
General Counsel
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Peter Katz

Peter has more than 13 years of experience as in-house legal counsel. He has served as General Counsel of Duo Security since January 2015. Prior to joining Duo Security, Peter was Senior Counsel and Director at AlixPartners, LLP and before that worked as Associate Counsel at The Vanguard Group and an Associate at Pepper Hamilton LLP.

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Chester Kustarz
VP of Engineering
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Chester Kustarz

Chester leads product engineering and technical operations at Duo Security. Prior to Duo he developed software products for multiple industries including network security, pharmaceutical, healthcare and telecommunications. Chester holds a bachelor's degree in Computer Engineering from University of Michigan.

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Lisa Paul
VP of Customer Success
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Lisa Paul

Lisa Paul is Duo Security’s Vice President of Customer Success where she is responsible for the company’s customer support, business operations, and customer success teams. Prior to joining Duo, Lisa was Head of Sales Infrastructure at Google. She has also served as Director of Information Systems & Services at General Motors and held leadership positions at information technology consulting firms such as Xpedior and Accenture.

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Nick Soulliere
VP of Engineering Operations
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Nick Soulliere

Nick leads our Engineering Operations team and is responsible for the availability, resiliency, and performance of our production tools and services. Prior to joining Duo, he was VP of Technology at digital marketing firm HelloWorld, where he was responsible for all aspects of the platform used to deliver digital engagement for most of the Fortune 500 brands.

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Ambrosia Vertesi
VP of People and Growth Initiatives
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Ambrosia Vertesi

Ambrosia is global Vice President of People, Growth Initiatives. She was most recently Vice President of Talent at Hootsuite, where she spearheaded the company’s hyper growth – from twenty to nearly a thousand employees with various top employer recognitions. In addition to her role with Duo, Ambrosia is the co-founder of HR Open Source. An industry leader in emerging practices such as social HR and employer branding, she most recently delivered keynote speeches at Linkedin Talent Connect and HR Tech World Conference.

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Jeff Wiss
VP of Corporate Marketing
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Jeff Wiss

Jeff comes to Duo Security from DataStax where he served as Vice President of Corporate Marketing. Previously, Jeff was Vice President of Demand Generation at Zendesk. Jeff also headed up Product Marketing for the MySQL product line at Oracle since its acquisition of Sun Microsystems where he headed up MySQL marketing.

Benchmark Logo Index Ventures Logo Geodesic Capital Logo Meritech Capital Partners Logo GV Logo Redpoint Logo Lead Edge Capital Logo True Ventures Logo Workday Logo

Our Investors

We love our leadership and are proud of how everyone at Duo contributes to our success, but we couldn’t do it without the support of some of the industry’s leading investors. They continually fuel our growth so that we can continue to provide the most innovative solutions in information security.

But don’t just take our word for it – together, their portfolios span more than $7 billion, supporting dozens of companies like Dropbox, Slack, Twilio, Automattic and Typekit.

Our Board of Directors

We’re proud to benefit from the insights of the industry leaders who serve on our Board of Directors, helping to guide our future and offer entrepreneurial expertise.

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Dug Song
Chairman of the Board
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Dug Song

A leading voice in information security, Dug has a history of building successful products and companies to solve pressing security problems. Prior to launching Duo, Dug spent seven years as founding Chief Security Architect at Arbor Networks, protecting 80 percent of the world’s Internet service providers and helping to grow the company to $120M+ annual revenue before its acquisition by Danaher. He also built the first commercial network anomaly detection system, acquired by Check Point Software Technologies.

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Jon Oberheide
Duo Security
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Jon Oberheide

Jon is responsible for leading Duo’s product vision, the company’s security and the Duo Labs advanced research team. He is a well-known security expert and researcher with deep expertise across the cybersecurity domain, including mobile and cloud security and malware analysis. Jon was named to Forbes’ "30 under 30" list for his Android security research. He attended the University of Michigan and holds bachelor’s, master’s and doctoral degrees in computer science, and has held positions at Merit Network and Arbor Networks.

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Puneet Agarwal
True Ventures
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Puneet Agarwal

Puneet Agarwal is a Partner at True Ventures, where he brings a strong mix of operating and investing experience. He began his career in product management at CrossWorlds Software, an early integration software startup sold to IBM, and built upon his career at BEA Systems, where he conceived, initiated and ran BEA’s RFID initiative. Later, as VP of Product Management for Geodesic Information Systems, Puneet helped grow the company from $20M to more than $80M in revenue. He also has experience in investment banking from his time at J.P. Morgan and venture capital from his time at Mayfield Fund. Puneet holds bachelor’s and master’s degrees in Industrial Engineering from Stanford University, where he was also a Mayfield Fellow.

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Matt Cohler
Benchmark
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Matt Cohler

At Benchmark, Matt Cohler partners with entrepreneurs in social, mobile, cryptocurrency and cloud computing companies. Previously, he was a member of the management team at Facebook, and the company’s seventh employee, as well as a member of LinkedIn’s founding team. Matt has served on several company boards at Benchmark, including 1stdibs, Asana, Domo, Duo Security, Instagram, Quora, ResearchGate, Tinder and Uber, and as a board observer at Xapo and Zendesk. He has also worked with several non-profit organizations, such as Against Malaria Foundation, the CDC Foundation, the San Francisco Symphony, UCSF, and Women for Women International. He holds a bachelor’s degree in Music from Yale University.

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Karim Faris
Google Ventures
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Karim Faris

Karim Faris leads Google Ventures’ investments in enterprise software, data analytics and security, bringing more than a decade of operational and investment experience to his role. Prior to Google, Karim was a venture capitalist at Atlas Venture, where he worked on investments in software and Internet infrastructure, and was director of New Ventures at Level 3 Communications, responsible for evaluating new business opportunities and has led product development for the company’s voice services. Karim holds an MBA from Harvard Business School, a master’s degree in Electrical Engineering from University of Michigan, and a bachelor’s degree in Computer Engineering from Brown University, where he published several papers on neural networks.

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Ron Gill
Independent Board Member
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Ron Gill

Ron is an accomplished CFO with more than 20 years of experience in enterprise software. He joined NetSuite in 2007 prior to its IPO, serving as CFO from 2010 through the company's $9.3B sale to Oracle in 2016. Prior to joining NetSuite, Ron held a variety of financial leadership positions at Hyperion, SAP, Dell and Sony. In January 2018, Ron joined the Duo Board, where he was selected to serve due to his broad industry experience and extensive financial leadership experience. He qualifies as an audit committee financial expert under SEC guidelines and also serves on the board of HubSpot. Ron holds a master’s degree in International Business Studies from University of South Carolina and a bachelor’s degree from Baylor University.

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Hilarie Koplow-McAdams
Independent Board Member
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Hilarie Koplow-McAdams

Hilarie joined NEA as a Venture Partner in 2017 on the technology team where she focuses on enterprise software and services. An enterprise software veteran, Hilarie spent the last three decades at growth-stage technology companies in operating and board roles. Most recently, Hilarie was President at New Relic, responsible for their growth strategies as well as leading global sales, marketing, customer success, support and business development. In addition to Duo, Hilarie currently serves as a member of the board of directors for Tableau and Zendesk, and is Vice Chair of the Pancreatic Cancer Action Network. She also serves on the advisory council of the University of Chicago’s Harris School of Public Policy. Hilarie has a master’s degree in Public Policy from University of Chicago and a bachelor’s degree from Mills College.

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Lorrie Norrington
Independent Board Member
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Lorrie Norrington

Lorrie Norrington is an Operating Partner at Lead Edge Capital, where her areas of interest include e-commerce, software as a service and transformative business models. In addition to Duo, she currently serves on the boards of Colgate-Palmolive, Autodesk, Hubspot, Eventbrite, Bigcommerce and Catawiki. Prior to her current roles, Lorrie ran the eBay Marketplace business globally, was the CEO of Shopping.com, and was an EVP at Intuit where she led the Quicken and QuickBooks businesses. She has a bachelor’s degree from University of Maryland and an MBA from Harvard Business School.

Our Customers

Ninety-eight percent of Duo customers – which includes brands like Etsy, Facebook, Random House, Toyota and Zillow – would recommend our security solutions, and we hold the highest Net Promoter Score in the industry. Why? Our solutions are the easiest to use and best value in the biz, and our customer support can't be beat.

View our case studies
100+ Million $ ARR 2016 $119 Million Venture capital raised 98 % of customers recommend Duo 300 Million Authentications every month Employees Net Promoter Score 500+ 68 10,000+ Paying Customers 100+ Million $ ARR 2017 98 % of customers recommend Duo 10,000+ Paying customers in 100 countries Employees Net Promoter Score Venture capital raised 600+ 68 $119 Million 300 Million Authentications every month

Where in the World is Duo?

Duo supports the missions of customers across the globe. But you can find our 500+ team members working at our offices in Ann Arbor, MI; San Mateo, CA; Austin, TX and London, UK – or remotely at all manner of coworking spaces, home offices and coffee houses.

Seattle, WA Portland, OR Bend, OR Denver, CO Detroit, MI New York, NY Alpharetta, GA San Mateo, CA Austin, TX Ann Arbor, MI London, UK Seattle, WA Portland, OR Bend, OR Denver, CO Detroit, MI New York, NY Alpharetta, GA San Mateo, CA Austin, TX Ann Arbor, MI London, UK