From 1985 until 1999, I studied, researched, and worked as a physicist and scientific computing specialist (radio telescopes, supernova explosion simulations, and particle accelerator physics). I have a PhD in Astrophysics & Applied Mathematics (University of Sydney and the University of Heidelberg, Germany).
Since 1999, I have worked primarily as an IT Consultant, IT Trainer, model-based systems engineer, software architect, and software developer, for clients in industry, engineering, education and science. I am also Content Management System (CMS) web developer, specialising in highly structured, database-driven technical content, and I enjoy creating technical media and educational resources.
To learn more about my passion for Model-Based Systems Engineering (MBSE) with Systems Modeling Language (SysML®) and graphical software engineering with Unified Modeling Language (UML®) visit my dedicated Model-Based Engineering résumé.
There is also a dedicated Software Engineering résumé with a focus on my experience with: coding languages such as Python, Java, C++, C, C#, and PHP: data oriented languages such as JSON, XML, and XML Schema; and SQL relational databases and pure-object databases.
And there is a dedicated Web Technologies résumé with a focus on PHP-driven Drupal™ CMS web development as used for this Webel IT Australia site, and the regular web culprits CSS, SASS, HTML, JavaScript, jQuery, XSL, etc..
I am also a big 
Wolfram Mathematica fan! Mathematica and the expression-based Wolfram Language (which is also a symbolic algebra language for actual mathematics and a numerical computation language) offer a superior alternative to mere "coding" languages for many tasks. And Mathematica can also seamlessly call Python, Java, and many other languages. Did you know that many Wolfram Language functions can also be compiled to optimised C for high performance?
The Wolfram Language is also brilliant for working with XML and JSON, and for RESTful web services, and it's easy to create powerful end-user GUIs and Wolfram Cloud web applications encapsulating solutions and workflows. The depth and breadth of the Wolfram technologies ecosystem is a wonder to behold.
You can also find out more about my entire career in Science and Information Technology at my online, database-driven, full career biographical Curriculum Vitae, which includes:
- Some past IT consultancy, IT training, scientific research, and study activities.
- Some organisations I have worked with.
- Some publications and reports I have authored and/or co-authored.
- Some technologies I have used.
- Some events I have participated in.
Please visit also:
- Webel IT Australia's IT Consultancy services and Client Showcase.
- My Linked In profile.
- Webel IT Australia on Linked In.
The human brain is multi-faceted. I'm a big believer in having creative pursuits to offset time spent with technology and science. These days, I get my artistic fix primarily through Flower photography, Light Art photography, Maths Art created using Wolfram Mathematica, and Visual FX digital art.
The Light Art photos were created using my motion-controlled Drancel Light Art system with custom electronics, which was of course developed using some model-based engineering, with UML modelling of embedded C++ for microcontroller programming, and SysML for device modelling, signal flow modelling, and component tracking. I even modelled an Arduino board in SysML! Unfortunately, SysML can't help me improve my hobby-level soldering skills.
I hope you enjoy this Drupal™-driven Webel IT Australia site.
Yours Systematically,Darren Kelly, BSc, PhD
Proprietor of Webel IT Australia, "The Elements of the Web"
Bondi, Sydney, Australia.