That looks pretty good. You should however add categories for areas of expertise.
For example, technical and scientific translations usually fetch much higher prices. Thus, translators with technical expertise are unlikely to use your site and compete with the lower priced general purpose translators, unless their special skills can be easily differentiated.
For example, technical and scientific translations usually fetch much higher prices. Thus, translators with technical expertise are unlikely to use your site and compete with the lower priced general purpose translators, unless their special skills can be easily differentiated.