Tantek Çelik

Employment & Products (as of 2010)

1. Presently employed at Mozilla and not seeking employment. Rest of resume reflects 2010 and earlier experience.

2. 2007 - 2010Independent Technologist, San Francisco, CA

   Web Technologies and Services

   • hCard and hCalendar updates, value class pattern (accessibility, internationalization)
   • CASSIS Javascript/PHP framework
   • H2VX contacts and events conversion service

   Taught Independent Workshops

   Developed curriculum and exercises, marketed, organized, planned, and delivered.

   • HTML5 workshop
   • microformats workshop

   Organized Professional Conferences and Tracks

   • Supernova 2009 conference: Real Time Flow track chair
   • Supernova 2008 conference: Open Flow track chair
   • Future of Web Apps (FOWA) Miami 2007 co-chair

   Invited Presentations

   • See Invited Presentations below.

   Standards Leadership

   • Open Web Foundation (OWF) elected board member
   • World Wide Web Consortium (W3C) invited expert (in CSS and HTML working groups)
   • microformats.org community admin and leader
   • HTML5 Superfriends

   Technical Editing

   • "Microformats Made Simple" by Emily Lewis, New Riders Press, October 2009.

3. 2004 - 2007Technorati, San Francisco, CA

   2005 - 2007 Chief Technologist.

   Created and drove the launch of new efforts like Technorati's Media Products services and partnerships, the searchlet, Technorati This! favelet, blog/site widgets, and prototype microformats search. Investigated and defined new standards and new technologies companywide, with partners, and throughout the industry.

   Websites, tools, products lead, developed, and launched

   • numerous Media Products with mainstream media partners
   • Browser Search Plugins for Firefox and Internet Explorer
   • Blogger Widgets (Searchlet, authority rank, blog reactions)

   2004 - 2005 Senior Technologist.

   Led adoption and implementation of valid semantic XHTML and CSS across all company sites. A primary contributor to the design, development, and launch of politics.technorati.com "Election Watch 2004" site in 13 days.

   Websites developed and launched

   • Technorati main site (valid XHTML+CSS green redesign, XHTML strict update)
   • Election Watch 2004 (initial valid XHTML+CSS release, XHTML strict update with new Attention Index, Charts features)

4. 1997 - 2004Microsoft Corporation, Mountain View, CA

   2003 - 2004 Group Lead.

   Group/team/project/product(s): confidential. Directly led/managed 3 people and set direction/priorities for overall technology area. Successfully completed investigation phase, wrote funding and planning proposal for implementation phase, secured funding from upper management, wrote job descriptions and secured office space for new phase.

   1998 - 2004 Diplomat.

   Primary representative to the World Wide Web Consortium (W3C) Cascading Style Sheets (CSS) working group and HyperText Markup Language (HTML) working group (alternate 1998-2000).

   Specifications Produced / Contributions:

   • See below: Publications & Presentations.

   2000 - 2003 Software Development Lead.

   Tasman presentation engine v1. TV Products Group. Led design and implementation of W3C web standards support (Extensible HyperText Markup Language version 1.0 (XHTML 1.0)&XHTML 1.1, most of CSS-2&2.1, DOM 1.0 & most of 2.0), porting (Win32: CE3-4,NT,2000,XP), and code minimization/modularization. Directly led and managed 2-3 software developers (set goals/objectives, wrote performance reviews), and set direction and priorities for overall team of 8 including software testers.

   Products Shipped / Contribution:

   • MSN for Mac OS X / major update of Tasman engine (v0.9).
   • Internet Explorer version 5 for Macintosh (IE5/Mac) (
     1. 5.1TP/OSX,
     2. 5.1/OS8-9,
     3. 5.2/OSX
     ) / improved Tasman engine (v0.1).
   • UltimateTV 1.0 - Satellite TV PVR DVR web email convergence device / internet support improvements.

   1998 - 2000 Software Development Lead.

   Tasman rendering engine v0. Internet Explorer for Macintosh (IE/Mac) team. Led design and implementation of compliant standards support, shipping the first browser ever to fully support CSS-1, HTML 4.0, PNG 1.0, DOM 1.0 HTML, ECMAScript-262, parts of CSS-2, and most of DOM 1.0 Core & some DOM 2.0. Led and managed 3-4 people (set goals/objectives, wrote performance reviews) out of a team of 11-12. Primary representative to W3C CSS&FP working group. Alternate representative to W3C HTML working group. Primary representative to W3C XForms working group (1999-2000).

   Products Shipped:

   • Internet Explorer for Macintosh (
     1. 4.5,
     2. 5.0 with Tasman v0 (first to pass W3C CSS-1 Test Suite)
     )

   1997 - 1998 Senior Software Engineer.

   Macintosh Internet Team. Led design and implementation of Cascading Style Sheets (CSS) browser support and CSS Object Model (CSSOM) support in Internet Explorer for Macintosh 4. Representative to W3C CSS&FP working group. Helped implement Document Object Model (DOM) support, Dynamic HTML (DHTML) support, and fixed numerous bugs in IE/Mac. Maintained Microsoft Component Library (COM) for 68k and PowerPC.

   Products Shipped:

   • Internet Explorer for Macintosh (
     1. 3.01,
     2. 4.0p1,
     3. 4.0,
     4. 4.01
     )
   • Microsoft Component Library for Macintosh (
     1. 2.19,
     2. 2.20,
     3. 2.21
     )

5. 1996 - 19976prime corporation, San Jose, CA

   Vice President.

   One of three principals of a Macintosh software product and consulting services company. Responsible for software engineering, consulting, website content authoring and maintenance, training, technical support, marketing, documenting, billing, sales, booth duty, presenting at MacHack conference.

   Major Products Shipped / Contribution:

   • REV autoversioning software / wrote v1.0 difference engine.
   • OpenContent™ (
     1. DR1,
     2. DR2,
     3. DR3
     ) container application SDK / software engineer.
   • Cyberdog DocBuilder (four releases:
     1. 1.0,
     2. 1.1,
     3. 1.2,
     4. 1.3b
     ) first fully functional container component / primary engineer.

   Services:

   • Development workshops & kitchens (US & Europe)
   • Phone consulting
   • Short-term development projects

6. 1992 - 1996Apple Computer, Inc., Cupertino, CA

   1993 - 1996 Co-Technical Lead.

   OpenDoc project. Implemented Document Shell subsystem, and led implementation of seven other subsystems and a dozen part editors. Identified and wrote critical code sections. Filed patents (see descriptions below). Technically led a team of more than a dozen engineers and provided technical leadership for human interface, marketing, evangelism, management, and developer support. Resolved cross-subsystem, cross-project and cross-company technical issues. Established and maintained process and guidelines for implementation of OpenDoc functionality. Documented and ensured documentation of design and implementation decisions. Presented at Apple World Wide Developers Conference (WWDC) and European Developer's Forum (EDF).

   Products Shipped:

   • OpenDoc component software toolkit (
     1. d2,
     2. A2,
     3. A6,
     4. A6+source,
     5. SOM DR1,
     6. DR2,
     7. DR3,
     8. DR4 1.0 GM
     )

   1992 - 1993 Senior Software Engineer.

   OpenDoc project. Led design and prototyping of the OpenDoc Storage subsystem and contributed to design of seven other subsystems. Contributed to implementation of OpenDoc Storage. Designed and developed turnkey documentation system for efficiently documenting all of the OpenDoc APIs and producing consistently styled and formatted documentation.

   1992 Software Engineer.

   System Storage Manager. One of three engineers who designed and implemented portions of a new system level structured storage manager.

7. 1990 - 1991Oracle Corporation, Redwood City, CA

   Macintosh Software Engineer

   Designed and implemented portions of ORACLE database client & server software for Macintosh including Server Manager, Pro*C and Pro*Pascal tools. Maintained database kernel archival subsystem. Wrote and performed industry standard TP1 RDBMS benchmark tests on Oracle Server for Macintosh.

   Products Shipped:

   • Oracle Server for Macintosh 1.0
   • Oracle for Macintosh v1.2

8. 1989 - 1990Apple Computer, Inc., Cupertino, CA

   System Software Engineer. Macintosh System 7.