Expert English to Spanish Transcription and Text Correction

I am seeking a skilled freelancer to accurately transcribe texts from English into Spanish. The project requires not only precise transcription but also thorough proofreading and correction of the Spanish text to ensure grammatical accuracy, natural flow, and overall high quality. The ideal candidate will have strong linguistic abilities in both English and Spanish, with a keen eye for detail in proofreading and editing. Please describe your experience with similar transcription and proofreading tasks.