The XML Guild

          where you find established XML experts . . .

Members

Kal Ahmed
Robin Berjon
Michel Biezunski
Jon Bosak
Ronald Bourret
Romain Deltour
Peter Flynn
Charles Foster
Florent Georges
Tony Graham
Betty Harvey
G. Ken Holman
Michael Kay
Jirka Kosek
Deborah A. Lapeyre
Evan Lenz
Benoît Marchal
Dan McCreary
David Megginson
Steve Newcomb
Uche Ogbuji
Nikita Ogievetsky
Wendell Piez
Adam Retter
C. Michael Sperberg-McQueen
Jeni Tennison
B. Tommie Usdin
Eric van der Vlist
Priscilla Walmsley
Sam Wilmott
Mohamed Zergaoui

The XML Guild currently has members in Belgium, Canada, Czech Republic, France, Ireland, the U.S.A., and the United Kingdom, all of whom are willing to work with customers in other locations.

Member Profiles

Kal Ahmed

Kal Ahmed is co-founder of Networked Planet Limited a company specializing in practical topic map solutions for the .NET platform. He has a long experience with XML and SGML document management systems and more recently has worked extensively with Topic Maps both as a founder member of TopicMaps.Org and contributor to the XTM 1.0 specification; as co-editor of the forthcoming revision of the ISO Topic Maps standard ISO 13250 and also as a developer of the open-source topic map toolkit TM4J.

Website: http://www.networkedplanet.com/
Email: kal.ahmed@networkedplanet.com


Robin Berjon

Robin Berjon has a dozen years' experience doing web development and standards during which he released a number of open source libraries to help with web publishing and XML processing. He was the chair of five W3C working groups (two on binary XML, two on Web APIs, one on mobile), has edited a number of specifications (HTML5, DOM4, SVG Tiny 1.2, a few other DOM or CSS related ones), and has participated in a dozen working groups. He's also developed mobile user interfaces, TV programs, and the widget platform for Joost. He has contributed extensively to open source projects.

When off work he reads books that his wife says he only buys because the titles make him look smarter than he is, has fun with his daughters, and gets badly beaten up by his cat in hand-to-paw combat.

Website
http://berjon.com/
Email
robin@berjon.com

Michel Biezunski

Michel Biezunski is a consultant in the field of information management based in New York City, working under the name Infoloom. He is assisting his customers by finding innovative ways to leverage complex networks of existing information repositories, and providing ways to interconnect pieces coming from various places. The products are navigational networks customized for various user needs (possibly displaying multiple perspectives). Michel's working experience covers various domains, including the publishing, finance, healthcare, and media industries, and governmental agencies. Michel's focus is in the area of semantic integration, auditable information systems, XML/SGML Applications, navigation models within complex information sets, and hyperlink-based models. He is recognized as the main initiator and co-inventor of the Topic Maps standard (ISO/IEC 13250). He has written many articles and developed and conducted numerous workshops. Michel is now working on innovative solutions for auditability and integration of information systems.

Website: http://www.infoloom.com/
Email: mb@infoloom.com


Jon Bosak

Jon Bosak organized and led the working group that created XML, subsequently serving for two years as chair of the XML Coordination Group of the World Wide Web Consortium. He is a long-time member of OASIS, the Organization for the Advancement of Structured Information Standards, and he chaired the committee that developed the OASIS process for the definition of industry-specific XML markup standards. He has also served on the Advisory Board of the Electronic Business XML initiative (ebXML), a joint project of OASIS and the United Nations body for Trade Facilitation and Electronic Business (UN/CEFACT); on the Solution Provider Board of RosettaNet, the leading XML-based supply-chain organization for the electronics industry; and on the Board of Governors of the Electronics Industry Data Exchange Association (EIDX), a member section of CompTIA. He currently chairs the OASIS Universal Business Language Technical Committee. Articles by Jon Bosak can be found on his web page.

Websitehttp://www.ibiblio.org/bosak/
Emailbosak@pinax.com


Ronald Bourret

Ronald Bourret is a consultant, writer, and researcher, specializing in how XML and databases work together. As a consultant, he focuses on high-level projects, such as reviewing XML application architectures, designing features for XML / database tools, and introducing clients to XML and how it applies to their specific situation. His writing includes XML and Databases, often considered the standard introduction to the subject, the XML Namespaces FAQ, and an IBM Redbook about XML support in DB2. He also maintains a Web site with descriptions of more than 200 XML / database and XML data binding products.

Website: http://www.rpbourret.com
Email: rpbourret@rpbourret.com


Romain Deltour

Romain Deltour is a French software developer with a decade's experience in XML technologies. He has been involved for several years in digital publishing and accessibility, notably within the DAISY Consortium where he leads open source projects and contributes to standards development. He also actively participates to several EPUB working groups at IDPF.

Romain works daily with XProc and XSLT, but he also keeps a close eye to a wide range of other technologies. He is particularily interested in Web standards and digital publishing. Romain is a firm believer in Open Source and inclusive technologies.

Email
rdeltour@gmail.com
Twitter
rdeltour

Peter Flynn

Peter Flynn runs the text management consultancy Silmaril which provides structured document solutions to clients in publishing, financial services, training, and government.

Peter is a graduate of the London College of Printing and the University of Westminster. He worked for a UK Training Board and for a US computer-bureau operation as IT consultant before joining University College Cork to work on research and academic computing support, and then founding Silmaril Consultants.

In the 1980s he was Secretary of the TeX Users Group, and using DAPHNE to typeset SGML for research users. In 1990 he was Secretary of RARE WGIII when the Member for CERN demonstrated the WWW, and he installed Ireland's first Web server a few months later. Peter was a member of the IETF Working Group on HTML and a contributor to the W3C XML SIG. He has published books on HTML, SGML/XML, and LaTeX. He is editor of the XML FAQ and a contributor to conferences and journals in electronic publishing, markup, and Humanities computing. He is currently completing a part-time PhD on the usability of editing interfaces for structured documents with the Human Factors Research Group in Applied Psychology in UCC.

Professional websitehttp://www.silmaril.ie
Personal websitehttp://blogs.silmaril.ie/peter
Email: peter (at) silmaril (dot) ie


Charles Foster

Charles Foster is the Managing Director and Principal Consultant of MarkLogician. Based in the UK, he is an independent MarkLogic expert. Charles is the Chairman of XML London, a highly successful annual XML/Semantic Web Conference.

Charles is the author of the MarkLogic, eXist, BaseX and Sedna XQJ APIs (XQuery API for Java).

Website: http://marklogician.com
Website: http://xmllondon.com
Emailcharles@marklogician.com


Florent Georges

Florent Georges is the founder and CTO of H2O Consulting. He has been involved in the XML world for 10 years, especially within the XSLT and XQuery communities. He is an invited expert in the XSL working group at W3C.

His main interests are in the field of XSLT and XQuery extensions and libraries, packaging, unit and functional testing, and portability between several processors.

Since the beginning of 2009, he has worked on EXPath, to define "standard" extension function libraries that can be used in XPath (so in XSLT, XQuery and XProc as well).

Website: http://h2oconsulting.be/
Website: http://expath.org/
Emailfgeorges@h2oconsulting.be
Twitter: fgeorges


Tony Graham

Tony Graham is a principal of Menteith Consulting Ltd. An Australian now based in Dublin, Ireland, he has previously worked with XML and other markup technologies in the USA and Japan. He is an invited expert on the FO subgroup of the W3C XSL Working Group and a previous member of the W3C XML Protocol Working Group and the OASIS Web Services Reliable Messaging TC. He is also the principal author of the xmlroff XSL formatter and the author of Unicode: A Primer, the first book about the Unicode Standard, and numerous articles and conference presentations on XML, XSL, XSLT, and Unicode.

Websitewww.menteithconsulting.com
EmailTony.Graham@MenteithConsulting.com


Betty Harvey

Ms. Harvey is President of Electronic Commerce Connection, Inc. Ms. Harvey has participated with many Government and commercial enterprises in planning and executing their migration to structured information. She is involved in the ebXML initiative and is the co-author of Professional ebXML Foundations published by Wrox, August, 2001, as well as many other publications. Ms. Harvey started and coordinates the Washington, D.C. Area SGML/XML Users Group . Prior to starting ECC, Inc., Ms. Harvey worked in Scientific and Engineering Computing at David Taylor Model Basic, NSWC. In her capacity with the Navy she participated in the development of US DoD CALS standards including IETMs, SGML and Internet protocols.

Websitehttp://www.eccnet.com
Emailharvey@eccnet.com


G. Ken Holman

Mr. G. Ken Holman is the Chief Technology Officer for Crane Softwrights Ltd., a co-editor of the UBL 2.0 specification, member of the W3C Working Group that developed XML from SGML, the founding chair of the two OASIS XML and XSLT Conformance Technical Committees and current chair of the Code List Representation Technical Committee and UBL HISC and SBS subcommittees and two task groups, a former international secretary of the ISO subcommittee responsible for the SGML family of standards, the current chair of the Canadian committee to the ISO, the author of electronically-published and print-published books on XML-related technologies, and a frequent conference speaker.

Website (books/videos): http://www.cranesoftwrights.com/links/trn-guild.htm
Website (training): http://www.cranesoftwrights.com/links/sched-guild.htm
Emailgkholman@CraneSoftwrights.com
Blog: http://plus.google.com/116832879756988317389/posts


Michael Kay

Michael Kay is the developer of the Saxon XSLT and XQuery processor. He is the editor of the XSLT 2.0 specification and is also a member of the XQuery working group in W3C. He wrote the Wrox Press book XSLT Programmers Reference, widely accepted as the definitive reference on XSLT, which is now in its third edition, and he has delivered a wide variety of papers, articles, and seminars on subjects related to XSLT and XQuery. He is based in the UK, and has 30 years' experience in the industry working with a wide variety of information management technologies. He founded Saxonica Limited in 2004 to continue the development of the Saxon technology and to provide services to Saxon integrators and users. Assignments undertaken include customized training courses and seminars, strategic advice on technology selection and application architecture, project mentoring, code reviews and performance tuning, and integration of Saxon into third-party tools.

Michael Kay is the joint winner (together with Norman Walsh) of the XML Cup 2005 awarded for services to the XML community.

Website: http://www.saxonica.com/
Emailmike@saxonica.com


Jirka Kosek

Jirka Kosek is a freelance XML consultant and teacher at University of Economics in Prague. He has more then 10 years experience in providing XML consultancy and training in Czech Republic and world-wide as well. His special focus is on documentation and electronic publishing systems. Jirka is an active member in several standardization bodies, including OASIS (DocBook TC and RELAX NG TC), W3C (XSL WG and ITS WG) and ISO/IEC JTC1/SC34.

Jirka Kosek is an author of several books about Web technologies. He also wrote numerous articles for IT developer magazines. In his free time he is contributing code into DocBook XSL stylesheets open-source project and co-organizing XML Prague conference.

Website: http://xmlguru.cz
Website: http://docbook.cz
Website: http://www.kosek.cz
Emailjirka@kosek.cz


Deborah A. Lapeyre

Debbie Lapeyre is Vice President of Mulberry Technologies, Inc. She is an XML architect and an expert in XML vocabulary and DTD/schema design who has worked with XML and XSLT since their inception and SGML since 1984. She serves on the Balisage: The Markup Conference committee and has been an organizer or co-chair for Extreme Markup Languages and several XML/SGML 'NN conferences. Ms Lapeyre has spoken and given tutorials at conferences and user groups around the world. She is a principal architect for the National Libraries of Medicine's Journal Archiving and Interchange Tag Suite. As a senior consultant, she leads Document Analysis teams, constructs and modifies schemas, and provides advice regarding all phases of the document lifecycle. Through Mulberry Technologies, Inc., Ms Lapeyre provides training in a wide range of XML technologies, including XML literacy and authoring, document analysis, DTD design and implementation, XSLT, XSL-FO, and Schematron.

Website: http://www.mulberrytech.com
Emaildalapeyre@mulberrytech.com


Evan Lenz

Evan Lenz, President of Lenz Consulting Group, is a recognized leader in the field of XML-based publishing. He has served as invited expert on the W3C XSL Working Group, in which he contributed to the design of XSLT 2.0, XPath 2.0, and XQuery. He has authored XML-related books and articles, including XSLT 1.0 Pocket Reference, and has spoken at numerous industry conferences. In addition, he has extensive training in human communication technologies such as NLP, which uniquely enhances his approach to consulting and training. With over a decade of experience specializing in XML technologies, Mr. Lenz is equipped to deliver extraordinary value in his client partnerships.

Website: http://www.lenzconsulting.com
Emailevan@lenzconsulting.com


Benoît Marchal

Benoît Marchal is a Belgian consultant. He is the author of XML by Example, Second Edition and other XML books. He has also published close to two hundred articles on XML, web services and related technologies.

Website:
Professional website www.psol.com;
Personal website www.marchal.com
Emailbmarchal@pineapplesoft.com


Dan McCreary

Dan is president of Kelly-McCreary & Associates, LLC. Dan is a data architecture consultant, author and standards evangelist. He has been active in XML and standards since 2000. Dan worked at Bell Labs as a chip designer, with Steve Job's at NeXT Computer as well as founding his own consulting firm of over 75 people. His background includes topics such as high performance computing, programming languages, databases and XML standards. He has published articles on the semantic web, metadata registries, US Federal XML standards (GJXDM and NIEM), XForms, XQuery and XRX. With his wife, Ann Kelly, Dan a co-author of Making Sense of NoSQL by Manning Publications. He is also the author or editor of three XML-related wikibooks on XForms, XQuery, and XRX. Dan is an advocate of functional and declarative programming, standards and ultimate Frisbee. He has three adult daughters and lives in Minneapolis, MN.

Websitehttp://www.danmccreary.com/
Personal Bloghttp://datadictionary.blogspot.com/
Emaildan@danmccreary.com
Twitter: dmccreary


David Megginson

David Megginson, principal of Megginson Technologies, has been active within the SGML and, later, XML communities since 1991. He led the original initiative that created SAX, the Simple API for XML, which is now the most widely used streaming API for XML and has been implemented in products by IBM, Oracle, Apache, and Sun, along with many others.

David's work includes consulting and development for many companies and organizations, a large number of Open Source software packages, and two books: Structuring XML Documents (1998) and Imperfect XML (2004).

David formerly chaired the XML Information Set Working Group at the World Wide Web Consortium (W3C) and served as a member of the W3C's XML Working Group and XML Coordination Group. David is currently chair of the annual XML conference: the next conference will be held in Boston from 5-7 December 2006.

In Spring 2000, David was proud to receive the Java Technology Achievement Award For Outstanding Individual Contribution to the Java Community from Sun Microsystems and JavaPro magazine.

Website: http://www.megginson.com/
Emaildavid.megginson@megginson.com


Steve Newcomb

Steve spends much of his time on semantic integration activities, often with reference to the ISO "Topic Maps" standard. His clients include government agencies, technology developers, and publishers.

Steve has recently open-sourced his Versavant subject addressing engine. He assists Michel Biezunski in maintaining the production system for IRS Tax Map. He serves as co-editor of the Topic Maps International Standard, ISO 13250. With Patrick Durusau, he is helping to draft ISO 13250-5, the Topic Maps Reference Model.

Steve is also co-chair the Extreme Markup Languages annual conference series in Montreal every August (www.extrememarkup.com).

Website: http://www.coolheads.com/
Emailsrn@coolheads.com


Uche Ogbuji

Uche Ogbuji, partner at Zepheira, specializes in the integration of next-generation Web systems with established enterprise data technology. He pioneered practical application of XML, RDF and SOA/Web Services, has led and sponsored several key open source software efforts to establish these, including Akara, Amara and EXSLT. Uche Ogbuji is a columnist for IBM developerWorks, Application Development Trends and XML.com. He has written over 300 articles on XML, Web Services and semantic technology in recognized publications, and speaks extensively at conferences worldwide.

Prior to joining Zepheira he was founder and CEO of Fourthought where for a decade he led the practical application of the above-mentioned technologies to the needs of clients including Sun Microsystems, Phillips Petroleum, Quovadx, AFFINA, Naval Surface Warfare Center and the Webb Interactive Services team where Jabber was born.

Websiteshttp://zepheira.com/,   http://uche.ogbuji.net/
Emailuche@zepheira.com


Nikita Ogievetsky

Nikita Ogievetsky is a New York based consultant. He is an expert in Information Architecture, Data Modeling and Knowledge Sharing and Interoperability.

He leads the community in finding simple solutions for real life problems on the enterprise scale. Nikita contributed to the XTM 1.0 specification and is a funding member of TopicMaps.Org. He presented and published papers on the subjects of XML, XSLT, Knowledge Technologies, Physics and general computer science. As an author he has contributed to both XML Topic Maps (Addison-Wesley) and XSLT Cookbook (O'Reilly).

Website: http://www.cogx.com/
Email: nogievet@cogx.com


Wendell Piez

Wendell Piez, an independent consultant based in Rockville, Maryland, specializes in markup technologies including XML, XSLT and document modeling. In addition to designing and building applications using XML, XSLT, XSL-FO and XPath-based technologies such as Schematron and XQuery, he advises clients on how to build and maintain efficient and flexible document production systems. He has taught XML, XSLT, XPath, Schematron and SVG to numerous academic and industry audiences. A frequent presenter at conferences including the Digital Humanities, Extreme Markup Languages and other series, he has also published theoretical investigations regarding the semiotics of digital text encoding, and has contributed regularly to the HUMANIST, TEI-L and XSL-List discussion forums. With Jeni Tennison, he is co-originator of LMNL, the Layered Markup and Annotation Language. Dr Piez is an active member of the Association for Computers and the Humanities (ACH), teaches at the Graduate School of Library and Information Science (GSLIS) at the University of Illinois at Urbana-Champaign, and serves as General Editor of Digital Humanities Quarterly (DHQ). He is also lead developer for the Proceedings of Balisage: The Markup Conference.

Professional websitehttp://www.wendellpiez.com
Email: wapiez (at) wendellpiez (dot) com.


Adam Retter

Adam Retter is probably best known as an eXist-db developer. Adam has been contributing to Open Source projects for many years and has been a core committer on eXist since 2005. Adam contributes as an Invited Expert to the W3C XML Query, Provenance and CSV on the Web Working Groups. Adam also founded the EXQuery project and created RESTXQ. Adam is probably best described as a Software Engineer and passionate Open Source hacker. Adam has a wide-breadth of knowledge and skills but predominately works with Scala, Java, XQuery and XSLT.

Outside of work, Adam's passion is snowboarding and he worked for several years as a Snowboarding Instructor at his local club. Recently he has co-authored a book for O'Reilly on eXist.

Website
http://www.adamretter.org.uk/
Email
adam.retter@googlemail.com

C. Michael Sperberg-McQueen

C. M. "Michael" Sperberg-McQueen is the Principal of Black Mesa Technologies, providing consulting and freelance contract work in the area of information management using descriptive markup. He is Co-chair of Balisage: The Markup Conference (every August in Montréal).

Formerly a member of the technical staff at W3C, Michael was also a co-editor of the Extensible Markup Language (XML) 1.0 spec (1998), and chair of the XML Schema working group. He was also instrumental in the Text Encoding Initiative (TEI), an international cooperative project to develop and disseminate guidelines for the encoding and interchange of electronic text for research.

Michael was co-editor, with Lou Burnard, of the TEI's Guidelines for Electronic Text Encoding and Interchange in 1994. He also served as Editor in chief of the TEI from 1988 to 2000.

Website: http://www.blackmesatech.com/
Email: cmsmcq@blackmesatech.com
Blog: http://cmsmcq.com/mib/


Jeni Tennison

Jeni Tennison is an independent consultant specialising in XSLT and XML Schema development. She trained as a knowledge engineer, gaining a PhD in collaborative ontology development, and since becoming a consultant has worked on using XML in a wide variety of areas, including publishing, water monitoring and financial services. She is the author of XSLT & XPath On The Edge (Hungry Minds, 2001), Beginning XSLT (Wrox, 2003) and Beginning XSLT 2.0 (Apress, 2005), one of the founders of the EXSLT initiative to standardise extensions to XSLT and XPath, and an invited expert on the W3C XSL and XML Processing Working Groups.

Websitehttp://www.jenitennison.com
Emailjeni@jenitennison.com


B. Tommie Usdin

Tommie Usdin is President of Mulberry Technologies, Inc. She has been working with XML and XSLT since its inception and SGML since 1985. She chairs Balisage: The Markup Conference and previously chaired the Extreme Markup Languages conferences. She has given presentations, papers, and articles on numerous XML related subjects. Ms Usdin was on the editorial board of the 15th edition of the Chicago Manual of Style and was co-editor of Markup Languages: Theory and Practice, a peer-reviewed quarterly by MIT Press. She is lead developer of the National Libraries of Medicine's Journal Publishing Tag Set, an XML vocabulary used by many bio-science journals. Through Mulberry Technologies, Inc., she provides training in a wide range of XML and SGML technologies including; XML, XPath, XSLT, XSL-FO, and Schematron.

Website: http://www.mulberrytech.com
Emailbtusdin@mulberrytech.com


Eric van der Vlist

Eric van der Vlist is CEO and founder of Dyomedea. This seasoned engineer has a passion for new technologies (especially for the Internet, XML and open source software). His main activity is consulting but he also delivers trainings and is the author of several books on XML schema languages and Web 2.0.

In his spare time, Eric is a beekeeper and a fruit farmer (link in French)

Website: http://xmlfr.org
Website: http://dyomedea.com/english/
Email: vdv@dyomedea.com


Priscilla Walmsley

Priscilla Walmsley is a consultant and trainer specializing in XML architecture and implementation, XML and XML Schema design, XQuery and XSLT development, electronic publishing and content management. Ms. Walmsley has over fifteen years experience as a consultant, software architect, developer, and data administrator. She has held positions at RELTECH Group, Platinum technology, XMLSolutions Corporation (as a VP and co-founder), and Vitria Technology.

Walmsley was a member of the W3C XML Schema Working Group from 1999 to 2004, where she served as an Invited Expert. She is the author of Definitive XML Schema (Prentice Hall 2012), and XQuery (O'Reilly Media 2007). In addition, she co-authored the book Web Service Contract Design and Versioning for SOA (Prentice Hall 2008).

Website: http://www.datypic.com
Email: pwalmsley@datypic.com


Sam Wilmott

Sam Wilmott started using markup languages in the late '60s. Since then he has led the development of typesetting/text-formatting systems for the Canadian Government Printing Office and for a major real-estate company, implemented one of the first SGML parsers (which was also the first pull-model markup parser), and is the originator of the OmniMark programming language (http://developers.omnimark.com), with its strong support of SGML, XML, and text transformation.

Nowadays Sam is working in the XSLT world: he has recently contributed to the implementation of an XSLT compiler and currently works as an XSLT programmer and analyst. And is thinking about where XML processing is heading.

Website: http://www.wilmott.ca
Emailsam@wilmott.ca


Mohamed Zergaoui

Mohamed Zergaoui is CEO and founder of Innovimax. Based in Paris, very involved in standards, he is a Member of XSL and XML Processing Working Groups, as well as ISO JTC 1/SC 34.
He is also an organizer of XML Prague Conference.

He provides consulting and teaching to big publishing customers, as well as developping the whole chain for some emerging publishers (like Droit-Algerie).

His main focus is making XML mainstream, by focusing on optimisation, especially Streaming.

Website: http://innovimax.fr
Website: http://droit-algerie.com
Emailinnovimax@gmail.com