Hello,
I have gone through your requirement, I can able to install & setup captcha in your joomla site.
I am ready to start right away and aiming to finish this task in a couple of hours.
Meanwhile, You can review my Freelancer profile, reviews & ratings which can gives you an idea about my work which I deliver to my clients. If you still want to see my work/portfolio than please let me know i am happy to show you before you make a hiring decision.
Should my proposal be of interest to you please do not hesitate to contact me to discuss this further.
Waiting for your reply & Looking forward to work with you.
Thanks with Regards,
Sid