Work4 is the leader in Facebook recruiting solutions. We help thousands of companies — including PwC, Intel, Accenture, L’Oréal, Paypal, Gap — connect with talent on social networks. Our technology transforms Facebook into a source of top quality talent, enabling enterprises to extend their employer brands, drive referrals organically and efficiently address specific profiles with targeted job ads. Our dedicated team of social recruiting experts provides ongoing best practices and advanced analytics to ensure customer success.
Work4 was established in 2010 and is backed by Matrix Partners and Serena Capital.
Stéphane Le Viet
Co-Founder and Chairman of the Board
Stéphane Le Viet is the co-founder of Work4 and Chairman of the Board. Having co-founded two other successful tech companies, Stéphane brings over ten years of startup experience and HR technology expertise to Work4. Stéphane gained valuable experience early in his career at McKinsey & Company in New York, after earning his MA in Applied Mathematics from Harvard University and his BS/MS in Electrical Engineering from Ecole Polytechnique in Paris.
Etienne Dargniès is the CEO of Work4. He oversees the company’s daily operations and is responsible for leading product development and business strategy. With previous experience as Managing Director at Nextedia Digital Marketing Agency, he brings a unique and fresh perspective to today’s recruiting issues. Etienne studied engineering at L’Ecole des Ponts et Chaussées and entrepreneurship at HEC Paris.
Olivier Le Floch
As Work4′s’ Chief Technical Officer, Olivier oversees our core technology development efforts. His professional interests include computer-human interaction, data visualization & exploration, and web application design & development. Prior to joining Work4, Olivier worked as a software engineer at Fotopedia, CTO at Aziluth, and board member at DojoCrea. Olivier received his MS in Computer Science from Ecole Polytechnique and Télécom ParisTech.
Senior Sales Director of North America
Ron Yazzetti Jr. is the Senior Sales Director of North America and has been in the recruitment industry since 2003. He’s spent time at leading companies such as Careerbuilder, Monster, Hotjobs, and Snagajob where he worked with many Fortune 500 companies on their recruitment needs. He received a culinary degree at Johnson and Wales University, but has found his passion in selling SaaS and recruitment-marketing solutions.
Vice President of Client Operations
James Winfrey is responsible for the day to dayoperations in the US. He brings over 13 years of Human Capital Experience specializing in analytics, talent management and social/mobile recruiting. James manages the US team who is ultimately responsible for our customers and partners daily interactions. Prior to joining Work4, James spent nine years with both Monster and Indeed working in the enterprise and staffing industries. He studied business at Texas State University where he received an advanced degree in Strategic Business Management and Marketing.
Chief Financial Officer
Arnaud is Work4’s Chief Financial Officer; he is in charge of managing and controlling day-to-day financial operations to preserve company assets. Since couples of years, Arnaud has served as a CFO in multiple well-known start-up in the tech industry such as Tigerlily, Bonitasoft, Sensitive Object … He received his Master Degree in engineering from Les Mines and graduated from ESSEC Business School.
Head of Sales EMEA
Daniel Morais has been successfully developing our solutions throughout Europe, the Middle East, and Asia as the head of sales at Work4 for the past 2 years. Together with the San Francisco-based team, he provides strategy for companies who aim for a strong employer brand and a connection with the best candidates in all sectors. He has been working in the recruitment industry for the past ten years, and prior to Work4 was a sales manager for the leading job boards in France.
Perrine El Khoury
Director of Business Development
Now the Director of Business Development, Perrine has been with Work4 since its beginnings, four years ago. During her time here, she has been identifying and strategically assessing opportunities to create long-term value for our organization. In addition to developing key partnerships both in France and San Francisco, she also manages the Business Development Team to create valuable growth. Prior to Work4, she worked at Sony and graduated from Audencia Business School.
Director of Client Operations
Renaud is Work4’s Director of Client Operations. In addition to spearheading the creation of dynamic sales processes, he also plays an integral role in business communications by providing efficient client support. Today, Renaud is working closely with our Sales team to ensure services are delivered to our clients all around the world. Before becoming part of the Work4 Team, Renaud studied at Paris Dauphine University and graduated from ESSEC Business School.
Board of Directors
Co-Founder and Board Member
Gautier Machelon is one of Work4’s Co-Founders and currently serves as a member of our board of directors. Prior to Work4, he was the CEO of Multiposting: the leading job posting software company in France. Gautier has taught at Sciences Po, and prior to co-founding these two successful companies he was an executive recruiter at CTPartners and Heidrick & Struggles.
Dana Stalder is a Silicon Valley based general partner at Matrix Partners, where he invests in early stage software and internet companies. Dana’s experience cuts across multiple disciplines including sales, marketing, finance, technology and product management at companies such as eBay, Netscape, PayPal and Respond.com. He has managed nimble ventures as well as 2,500-person teams. Dana joined Matrix in 2008 from PayPal, where he was a senior vice president and managed all business operations, including product, sales, marketing and technology. Dana studied business and economics at Santa Clara University.
Xavier Lorphelin is a managing partner at Serena Capital, a European investment firm which finances fast-growing and innovative companies. Xavier has more than 15 years of experience in the development and investment in technology-driven companies. He worked for 5 years in the Silicon Valley, successively for Flextronics and JSource, which he co-founded in 1997. In 2002, Xavier joined Société Générale Asset Management in France to take over the venture capital activity, following the acquisition of the incubator Kangaroo Village that he co-founded in 2000. Xavier is a graduate from Ecole Polytechnique, Ecole Nationale des Ponts et Chaussées and Stanford University.
Co-Founder and Advisory Board Member
Matt was responsible for product strategy and execution for Work4′s social recruiting tools, as well as the company’s analytics and technical partnerships. He opened Work4′s first US office in San Francisco, where he also led business development and marketing initiatives. Matt studied at UC Berkeley and Oxford University before dropping out of Harvard Law School to join Work4.
Advisory Board Member
Gokul Rajaram serves as Product Engineering Lead at Square. Prior to joining Square, Gokul served as Director of Ads at Facebook, overseeing all of the social network’s Ads related activities. He also co-founded and served as CEO of Chai Labs which was subsequently bought by Facebook. Before Chai Labs, Gokul served as Product Management Director at Google where he was known as one of the godfathers of AdSense. In addition to his duties at Square, Gokul serves as an investor, board member and advisor at several digital media/software companies. He earned his MS in Computer Science from the University of Texas at Austin and his MBA from the Massachusetts Institute of Technology- Sloan School of Management.
Advisory Board Member
Yuri Milner is a well known Russian entrepreneur and venture capitalist. He founded investment firms Digital Sky Technologies (now Mail.ru Group) and DST Global which was one of the early investors in Facebook, Zynga and Groupon. Prior to founding the Mail.ru Group and DST Global, Yuri served at the World Bank, Alliance Menatep, and New Trinity Investments. Yuri studied theoretical physics at Moscow State University and earned his MBA at the Wharton School of Business. He was named in Fortune magazine’s list of the world’s fifty most prominent business people in 2010.
Advisory Board Member
Clara Shih is the co-founder and CEO of Hearsay Social, the developer of the market leading Social Media software solution for enterprises. In addition, she serves on the Board of Directors of Starbucks Corporation. Prior to co-founding Hearsay, Clara worked at Microsoft Corporation, Google, and Salesforce.com. She is the author of “Teamspace: A Simple, Self-Recovering Workspace for Collaborative Computing” and the New-York Times featured book: “The Facebook Era: Tapping Social Networks to Market, Sell, and Innovate” which has been translated into nine languages and is used as a textbook at Harvard Business School, Stanford, and over a dozen other academic institutions. Clara earned both her BS and MS in Computer Science at Stanford University.
Advisory Board Member
Steve Pogorzelski is the CEO of ClickFuel, the developer of the leading SaaS-based campaign management tool for SMBs. Prior to founding ClickFuel, Steve served as President of Monster North America, and Group President for Monster International. Other Board of Director affiliations include Morgan Goodwill Industries, StartDate Labs, OurStage.com, ClickFuel, and the Board of Visitors at the University of Wisconsin’s College of Letters and Science. Steve received his BA in Journalism/Advertising from the University of Wisconsin-Madison and is the co-author of “Finding Keepers” published by McGraw Hill.
Advisory Board Member
William is the CEO of HR consultancy Tincup & Co. William is one of the country’s leading thinkers on social media application for human resources, an expert on adoption of HR technology and damn fine marketer. William has been blogging about HR related issues since 2007. He’s a contributor to Fistful of Talent, HRTechEurope and HRExaminer and also co-hosts a daily HR podcast called DriveThruHR. William is a graduate of the University of Alabama of Birmingham with a BA in Art History. He also earned a MA from the University of Arizona and a MBA from Case Western Reserve University.
Advisory Board Member
Brian Louie helped build the foundation of Work4′s global sales and strategic partnership efforts from 2011 to 2014. Prior to Work4, he served in various Sales Leadership and Strategy roles at Yahoo! HotJobs and Monster Worldwide. With 13 years of experience in the online recruitment industry, he has developed a unique insight to the needs of employers and the shift to social recruiting strategies. Brian holds a BA from the University of California, Irvine.