Senior Leadership Team
This function is responsible for corporate administration and Team management. It drives the work of the Team in alignment with mission and vision, and provides support to enable team success in fulfilling our mission.
Catrina Ahlbach
Chief of Staff, Manager of the Office of the CEO
Catrina joined W3C in December 2024. A long time web developer and evangelist, she is now working on a Masters in Library and Information Studies.
catrina@w3.org
Catrina's Github account
Sylvia Cadena
Chief Development Officer
I joined the World Wide Web Consortium (W3C) as Chief Development Officer in September 2024 to focus on setting direction and expanding development portfolio across internationalization, accessibility, privacy and security for the Web, ensuring the longevity of the organization by defining a vision for financial security.
I am a seasoned international development expert with 30 years’ experience across Latin America and the Asia Pacific. I have extensive experience in fundraising, design, management and reporting at local, national and regional level, leading purposeful collaborations that strategically use the Internet and the Web for social, economical, and cultural development.
Before W3C, I worked at APNIC for 16 years. During my tenure, I worked to establish the Information Society Innovation Fund (ISIF Asia); the Seed Alliance and more recently the APNIC Foundation, where I worked to expand its grant making, allocating close to 11M USD to close to 200 initiatives across 32 economies. I also led the design and implementation of a number of training and professional development initiatives addressing gender diversity and social inclusion in APAC.
Throughout my career I have served the Internet technical community on a variety of roles across a number of advisory bodies and selection committees related to Internet Governance, innovation, women in technology and professional development initiatives with a focus on the Internet industry, at a global and regional level. I have addressed many national, regional and international conferences.
Read more in my LinkedIn profile.
Seth Dobbs
Chief Executive Officer
Seth is W3C President & Chief Executive Officer (CEO) since November 2023.
Seth reports to the W3C Board of Directors and takes responsibility for the fiscal integrity, financial stability and revenue generation of the World Wide Web Consortium (W3C). He leads the change management and integration efforts for W3C to create new offerings, seek broader financial support opportunities, and succeed as a public-interest not-for-profit with global partners. He oversees shaping and running W3C in line with its mission to lead the Web to its full potential.
Christine Gefaell
Director, Legal & Compliance
Christine joined the W3C Team in October 2024 as Director of Legal and Compliance to ensure W3C operates in full compliance with all applicable laws and regulations throughout the world, to advise on all legal matters, to guide the organization's policies, ultimately furthering our mission and goals.
Prior to joining W3C, Christine worked as an associate general counsel in the ethics and compliance department at a global, biotech company focusing on areas such as antitrust, trade compliance, anti-bribery/anti-corruption, human rights, and risk management, generally. Previous to this corporate position, she worked in litigation as a defense, professional malpractice attorney. Christine is licensed in both New Jersey and Connecticut.
See her LinkedIn profile for more information.
Dominique Hazaël-Massieux
VP, Global Impact; VP, W3C EMEA; Distinguished Expert, VR/AR & AI
Dominique is VP of Global Impact, VP of EMEA operations, Distinguished Expert on AR/VR and AI. He manages W3C Developer Relations, serves as W3C Community Development Lead (in charge of managing the Community Groups program), and serves as staff contact in the Web Real-Time Communications Working Group, the Web and Machine Learning Web Working Group, and the Web & Networks Interest Group. He is the General Manager of ERCIM, the W3C Partner in Europe. He also develops tools and applications as needed in his various roles.
He joined initially W3C’s Communication and Systems Team as a member of the Webmaster Team in October 2000; after having joined then led the QA Activity until September 2005, Dom took part in the Mobile Web Initiative as Staff Contact for the Best Practices Working Group and later as co-Chair of the Mobile Web Test Suites Working Group. Dom also served as Staff Contact for the Device and sensors Working Group
Dominique holds an engineering degree from the “Grande Ecole” École Centrale Paris.
Vivien Lacourba
Director, Systems
Vivien joined W3C in May 2003 as the W3C Webmaster at the MIT/CSAIL host site in Cambridge, MA, USA.
Since September 2004 Vivien is working as a Systems & Network Engineer for W3C Europe at the ERCIM host site in Sophia-Antipolis, France.
Vivien graduated in September 2003 from the Polytech Nice Sophia engineering school (formerly known as ESSI) in Sophia-Antipolis, France.
He holds an engineering degree in Computer Science, specializing in Networks. In June 2000, he received a two year degree in Computer Programming at the University of Lyon, France.
Philippe Le Hegaret
VP, Technical Strategy
Philippe Le Hegaret is VP, Technical Strategy, responsible for the technical mission of the Consortium. Until 2025, he was also the Project Lead, responsible to drive the work necessary to achieve technical operational success. He is the current co-Chair of the W3C Process Community Group. Until 2016, he was for the former W3C Interaction Domain, which produced frontend Web technologies including HTML5, CSS3, SVG, WOFF, or Web APIs. Prior to 2009, Philippe lead the W3C Architecture Domain, which produced the W3C Core technologies in the area of XML, Web Services, and Internationalization. He is a former Chair of the Document Object Model (DOM) Working Group.
Prior to joining W3C, Philippe promoted the use of XML inside Bull in 1998, also focusing on the interaction between XML and object structures. He wrote the first version of the CSS validator in 1997.
Philippe holds a Master's Degree in Computer Science from the University of Nice (France).
An Qi (Angel) Li
Director, Chapters; Director, W3C China
Angel Li joined W3C in 2006. Since 2010, she had been devoted to setting up the fourth Host of W3C in China together with W3C Team and Beihang University. In January 2013, as the Host of W3C in China was officially launched, Angel Li was assigned as the Manager of W3C China Host, responsible for managing W3C activities in China as well as joining the global W3C management team.
Angel left W3C in June 2018 and started an adventure in the industry with Alibaba, mainly working as the representative of Alibaba in a number of domestic and international standard organizations. Her life in W3C included being the Advisory Representative and the chair of couple of groups.
In Nov 2021, Angel rejoined W3C as the Deputy Director of W3C China. From Jan 2022, she started to work with W3C community as the co-chair of W3C Governance Task Force focusing on the design and implementation of new W3C governance structure. With the Board of Directors officially seated in Oct 2022 and W3C Inc the new legal entity up and running on Jan 2023, the W3C Governance Task Force completed its mission and Angel shifted her focus to W3C Global Chapters and Evangelists Program, Diversity Fund Selection Committee and a few other projects. She was appointed as the co-chair of the W3C Advisory Board in Jan 2025 and has been working with the W3C Advisory Board on topics of interests to the community.
Coralie Mercier
Director, Marketing & Communications
Coralie is Director of W3C Marketing & Communications. Since February 2015, she manages the Consortium's Comm activities, including messaging, press relations, W3C website, branding, marketing, internal communications as well as Public and Member communications. Previously and since 2005, Coralie was W3C Communications Team assistant.
Since joining W3C in January 1999 with degrees in secretarial work and English as a foreign language, Coralie held a number of positions such as W3C Europe team assistant, W3C Europe administration manager (2001-2006). She was team contact for the W3C Advisory Board (2005-2017), helped with community outreach and developer relations.
Ralph Swick
Chief Operating Officer
Ralph joined W3C in January 1997, to focus on the Privacy and Demographics project. As that project (now called P3P) was starting, Ralph also started the Metadata project. The Resource Description Framework became a full-time responsibility when the Metadata Activity turned into the Semantic Web Activity. In 2007 Ralph became the leader of the Technology and Society Domain and in 2009 was appointed Acting Chief Operating Officer. As of 2010 the 'acting' qualifier was removed. Then in 2022 Ralph was appointed as Interim Chief Executive Officer of the new W3C, Inc. In November 2023 when W3C's permanent CEO joined, Ralph resumed his role as Chief Operating Officer.
Ralph came to W3C from the X Consortium, where he was Technical Director for the X Window System. Ralph brings to W3C both a systems background and an application background. Long involved with the X Window System, Ralph was one of the architects of the Xt Intrinsics (user interface) toolkit.
Prior to joining the X Consortium, Ralph was a software engineer for Digital Equipment Corporation in their Office Systems Advanced Development Group. There he worked on information filtering tools (software agents) and computer-supported cooperative work tools. Before that, Ralph was in Digital's Corporate Research Group working at MIT Project Athena. Ralph holds a BS in Physics and Mathematics from Carnegie-Mellon University.
Ralph's interests are in applications of Web technologies to support human-human interaction, especially over time and distance.
Ken Troshinsky
Chief Financial Officer
Ken joined the W3C Team in February 2024 as Chief Financial Officer (CFO).
Naomi Yoshizawa
Director, Global Member Relations; Director, W3C Japan
Naomi is the Director of Global Member Relations to ensure member satisfaction, encourage participation in W3C groups and events. She is also appointed as the Director of W3C Japan.
Prior to joining W3C, Naomi worked at AT&T Japan as a manager of Marketing Communications for AT&T World Access. She worked on a team that created an innovative prepaid card, produced publications and bids for designs, and developed sales channels. She was awarded a Grand Prize for Best Operations Manager.
She earned an MBA of International Management, from Aoyama Gakuin University, accredited by EFMD.
