Electrician Needed

[J Anoni]

I am looking for an electrician and would appreciate any recommendations that could be provided in Guanajuato.
? English speaking would be a big plus.
? Equivalent of a "licensed electrician", rather than "a contractor who can do electrical work", would be a big plus.
? Experience in the connection of gasoline backup generators to household electrical systems through the use of transfer switches, would be a big plus.
? Specifically: to connect a generator transfer switch to a main circuit breaker box.