[1.2] WHAT DOES QUANTITY SURVEYOR DO?
When you are a Quantity Surveyor (especially when you are employed by Employer & QS Firm), you shall have a job responsibilities as below;

Budget Stage: The Quantity Surveyor shall carry out the feasibility cost estimate at a feasibility stage of a project and Cost Plan during design stages.
Pre-Contract: The Quantity Surveyor shall prepare procurement & tendering strategy when the Employer agrees on a estimated budget (Cost Plan).
Post-Contract: After the tender is awarded, the Quantity Surveyor shall prepare contract documents, financial statements, monthly interim payment valuations, design change pre-approvals, assessment of variations, and final accounts.