As "E57" stated:
However, there is then a fine line between Electrical Designer, and Electrical Engineer, that shouldn't be crossed.
Look upon this as the "Golden Rule" as regarded by the DCA (Dept. of Consumer Affairs).
If you currently hold an Active "P.E." License (Professional Engineer), and it's in the Field of Electrical, then you may include the term "Electrical Engineer" on legal documents.
If you work for a Firm, which has an RMO or other responsible person with an Active P.E. License in the Field of Electrical, and you are able to perform work that gets stamped by that person, then you may use the term "Consultant" or "Consulting Engineer".
Otherwise, just use the term "Electrical Designer" or "Electrical Systems Designer".
This is SOP / Protocol in Californication, which may differ in your State.
Along with the "Injun-ear" stuff listed above, if any Contract type work is performed, Licensing per class involved would also be involved - much of which depends on the situations, but without any doubt is required for persons soliciting work.
Just an FYI