Senior Engineering Manager:I am an Senior Engineering Manager on the Acrobat Mobile team. The responsibilities of my team include PDF, Accessibility, Reflow and other Core/Shared Technologies.PDF Expert for ISO:I provide my technical expertise to the International Organization for Standardization (ISO) as a PDF expert and US representative. I am member of several working groups in Technical Committee 171, Sub Committee 2, which work to standardize various aspects of PDF. Specifically, I am a member of the PDF/A, PDF/E (including PRC) and PDF/UA working groups and also a member of the ISO 32000 (PDF) committee. I am also a member of various ad hoc committees.

Engineering Manager:I am an Engineering Manager on the Acrobat team. The responsibilities of my team include Release/Production Engineering, Digital Signatures and Browser.PDF Expert for ISO:(See successive role at Adobe Systems above)

PDF Expert for ISO:(See successive role at Adobe Systems above)Test Automation Infrastructure Lead:Adobe is committed to releasing enterprise quality software. To continue meeting this goal, I will be leading the project to continue enhancing the testability of Acrobat and Reader's code. I will bring my software engineering experience to help ensure that all new code added to Adobe Acrobat and Reader is highly testable.

PDF Expert for ISO:(See successive role at Adobe Systems above)Acrobat Portfolio Team:I worked on the Acrobat X implementation of PDF Portfolio technology. A PDF Portfolio allows an author to attach multiple documents into a PDF and then provide rich navigation experiences around the attachments. These attachments can take the form of PDF, but can also include Office documents, CAD drawings, Images and many other formats. I helped implement a mechanism to publish these documents as Web Sites and worked on various other aspects of the project.

PDF Expert for ISO:(See successive role at Adobe Systems above)Acrobat Portfolio Team:(See successive role at Adobe Systems above)Acrobat Digital Signature/Security Team:I was a member of the Acrobat Security team, working on Digital Signature solutions for Adobe Acrobat. During my time in the team, I implemented the Adobe Automated Trust List mechanism, which allows automatic distribution of trusted root certificates to Acrobat, so that large companies and governments can deliver signature workflows to end users without requiring them to follow complex installation and trust configuration steps. I also implemented support to allow Adobe Acrobat 9 to perform Signing and Encryption/Decryption operations using credentials stored in the Mac Keychain. This included interfacing with the CDSA/CSSM mechanisms provided by OS X.PDFXML Project:I worked on the PDFXML project at Adobe, developing both the XML syntax for representing PDF and the C++ plug-in implementation for Adobe Acrobat to support it. PDFXML consists of a package containing XML components which describe the various structures inside PDF. SVG was used to represent the pages, custom XML grammars were defined to represent bookmarks, annotations, logical structure, etc.. The PDFXML package also contained binary resources (e.g. images, fonts), which are used in rendering the content. PDFXML was defined using RelaxNG and I also wrote AIR/Flash applications to support the project.Various Other Projects:As well as the work described above, I have also worked on fuzzing of PDF, workspace technologies and various other small projects.

I was the General Chair for the ACM Symposium on Document Engineering 2011 (DocEng 2011). I organized and planned the 2011 conference, along with my Conference Committee.

I contracted as a software engineer, working on PDF- and XML-centric solutions for Adobe Acrobat and the Adobe PDF Library. I wrote C++ plug-ins for Adobe Acrobat and C++/C# server/client solutions using the PDF Library. My primary project at Mimotek was working with their static content analysis and recognition engine. This engine consumes PDF documents, output by various systems, and performs content recognition on them. The PDFs could then be updated with logical structure information, content could be extracted as new PDF documents containing articles found within the original PDF, and the contents of the PDF could be extracted into various XML formats.

Whilst reading for my PhD at the University of Nottingham, England, I worked as a teaching assistant. I lectured for a number of courses including Documents and Typesetting (a Document Engineering course). I also set and marked coursework for the undergraduate students in the School of Computer Science, as well as acting as a lab assistant and personal tutor.Subjects taught or tutored by me included programming (C++/Java), Document Engineering (XML, XSLT, SAX/DOM (Java and Xerces)), Mathematics for Computer Science, as well as many other topics.

Adobe Systems was the sponsor of my PhD and as part of my sponsorship, I worked at Adobe as an intern. I worked as a developer in the Acrobat Engineering Group working on Adobe Acrobat 6. As part of my work, I looked at the relevance of XPath and XPointer syntax as a means of accessing content in PDF. I wrote C++ plug-ins (DLLs) for Adobe Acrobat and helped to develop a test plug-in for providing fragment identifiers into Acrobat.