O'neil Delpratt
Software Developer at Saxonica Ltd
Leicester, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolO'neil Delpratt is a seasoned software developer with 14 years’ experience specializing in XML technologies—XSLT, XQuery, XPath, XML Schema—and systems-level work in Java, C++ and C#. He has been a core contributor at Saxonica since 2010, implementing Java bytecode generation, C/C++/PHP bindings for Saxon, and a partial XForms runtime, and served as an invited expert on the W3C XQuery working group. His background blends academic research (PhD work on succinct, indexable in-memory XML representations) with production engineering, including JNI-based integrations and GraalVM native-image experimentation for Java/C++ interop. Comfortable across tooling like Eclipse, IntelliJ, Maven and Ant, he pairs deep protocol/standards knowledge with practical delivery of compilers and language runtimes. Based in Leicester, he combines long-term domain expertise with a habit of publishing technical insights on his developer blog.
14 years of coding experience
2 years of employment as a software developer
3 A Levels, Computer Science, 3 A Levels, Computer Science at Wyggeston Queen Elizabeth 1 College10 A-C GCSEs, 10 A-C GCSEs at Lancaster Boys SchoolPhD, Computer Science, PhD, Computer Science at University of Leicester
English
Stackoverflow
701reputation
35kreached
42answers
5questions
Github Skills (45)
projection10
xslt10
php10
xml10
abstract-syntax-tree9
xquery9
interpreter9
slideshow9
browser9
reveal9
parser8
code-generator8
w3c8
code-generation8
church8
Programming languages (7)
Github contributions (5)
Saxonica/Saxon-Forms
Jun 2017 - Dec 2022
XForms implemented using XSLT 3.0
Contributions:70 commits, 17 PRs, 66 pushes in 5 years 7 months
browserxformsjavascriptxmlxslt-3
Saxonica/saxonc-resources
Jul 2023 - Jan 2025
Contributions:38 pushes, 1 branch in 1 year 5 months
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