The beauty of the web is you can use anyone from around the entire world wide web for this SEO. I would first spend a bit of time getting to know some SEO basics and figure out exactly what you need and then start interviewing potential firms via email.

Google lists some helpful advice on questions to ask potential SEO’s

Some useful questions to ask an SEO include:

Can you show me examples of your previous work and share some success stories?
Do you follow the Google Webmaster Guidelines?
Do you offer any online marketing services or advice to complement your organic search business?
What kind of results do you expect to see, and in what timeframe? How do you measure your success?
What’s your experience in my industry?
What’s your experience in my country/city?
What’s your experience developing international sites?
What are your most important SEO techniques?
How long have you been in business?
How can I expect to communicate with you? Will you share with me all the changes you make to my site, and provide detailed information about your recommendations and the reasoning behind them?

What are you actually looking for? can you be more specific?

SEO/SEM are global and can be done from any part of the globe… there is no ristriction or any problem if it is in philippines.

Sunil
http://www.theseotraffic.com