Dear [Recruiter's name], I'm writing to apply for the Data Analyst position. I've worked on a number of projects using Python, and I'm excited about your company — it has a great reputation in the field. I think I'd be a strong fit for the role, and I'm confident I could add real value to your team. I'd love to hear back from you. Best regards, [Your name] What gave you away: - Verb tense after "have": use the past participle, not the base verb — "I have done many projects," not "I have do." Same trap with "I have gone," "I have seen." - "interesting" vs. "interested": you are interested in something; a thing is interesting to you. So "I'm interested in your company," not "I am interesting in." - Office clichés like "kindly revert back": native speakers say "I'd love to hear back from you" or "Looking forward to your reply." ("Revert" only means "go back to a previous state.") One small thing: I replaced "Dear Sir" with "Dear [Recruiter's name]" — for a friendly US recruiter, using their name is warmer and avoids assuming gender. If you don't have a name, "Hi there," or "Dear Hiring Team," works well.