Tax Lawyer recommendations

Anyone have a recommendation for a tax lawyer who can file both Spanish and USA taxes? I’ve lived in Spain for two years and my current gestor in Spain doesn’t have much knowledge about the US side of things and would prefer to use someone who does.

If I do need to keep an American and a Spanish tax accountant, does anyone have an American accountant they trust? I am going to need to amend the last two years returns to receive a refund on the social security amount I paid.

Thanks in advance!