Hello, my name is Bruno Gomes, i am a Professional Freelancer, Web Developer and Designer, specialized in CMS, such as Wordpress, Joomla, etc After reading your job description i would like to apply.
I have and already add similar issues like this solved, actually one very recent with a client, forms can be complicated in wordpress, specialy contact forms, using a none native plugin, i have many experience att this level, and i am sure i can help you promply and effective.
Feel free to ask any questions or doubts you may have.
Hope you take my answare in consideration
Best Regards