Here are some sites to give you an idea for IT jobs in Kathmandu.
http://www.jobsnepal.com/
http://www.cloudfactory.com/careers/nepal
http://www.veriskit.com/jobs
http://lftechnology.com/
http://www.merojob.com/
esewa.com.np

there are more companies and you'll just have to do a little more digging.. good luck!