I'm a Java and PHP developer and I specialise in creating customisations and API integrations for the Bullhorn ATS/CRM system. You can check out some of the tools I've created for Bullhorn users on the Bullhorn Tools page. I also create bespoke components and can run mass updates for your Bullhorn account, if you'd like to know more, get in touch via the the Contact page.
I also dabble in C++ from time to time, mainly to maintain and document the open-source VJ app Aestesis Elektronika. I've created some free modules for Elektronika, which you can check out on the Elektronika page.