A Purchasing Staff job description typically involves tasks like sourcing and acquiring goods, services, or materials for an organization, managing suppliers, analyzing costs, and ensuring timely delivery and quality of purchases. They research potential vendors, evaluate offers, negotiate contracts, and track inventory. 

Job requirements outline the qualifications, skills, and experience needed to succeed in a specific role. Examples include educational background, work experience, certifications, technical skills, soft skills, physical abilities, and language requirements. These requirements are often categorized as "must-haves" and "nice-to-haves" to clarify essential and desirable qualifications.