Which document formally expresses a candidate's interest in a job position?

The document that formally expresses a candidate's interest in a job position is a letter of application, which is specifically designed for this purpose. A letter of application serves as a personalized introduction to a potential employer, where the candidate outlines their interest in a specific job and highlights relevant skills and experiences that make them a suitable fit for the position.

This document goes beyond simply providing a summary of qualifications, which is typically found in a resume. While a resume includes details about work history, education, and skills in a more structured format, the letter of application allows the candidate to convey their motivation and enthusiasm for the role in a narrative form.

Unlike a job description, which outlines the responsibilities and requirements of the position from the employer's perspective, the letter of application is focused on the candidate's perspective and intentions. It demonstrates the candidate's proactive approach in seeking employment, which is a critical aspect of the job application process.