- Prepare and submit interim bills, running account bills (RAs) and final bills based on project progress and contract terms.- Coordinate with site engineers and project teams to verify work done, measurements, and quantities to support billing.- Review subcontractor/vendor billing claims and supporting documentation to ensure alignment with work orders and BOQs (Bill of Quantities).- Maintain accurate records of billings and supporting documents such as measurement sheets, material usage, change orders, retention summaries and payment certificates.- Monitor and report on outstanding bills, pending certifications, retention recoveries and billing status to project management and finance.- Ensure invoices/bills comply with the contractual conditions (payment terms, retention, scope of work, variation orders) and statutory requirements like GST, TDS etc.- Use billing/ERP software and MS Excel to prepare billing schedules, track billing vs project progress and assist in periodic billing reconciliations.- Liaise with procurement, accounts and project teams to capture billing data, update change orders, validate vendor bills and ensure there are no gaps in documentation.- Resolve basic billing queries from clients, consultants, subcontractors or internal teams escalate more complex disputes to senior billing/engineering staff.- Assist in preparation of monthly billing reports and dashboards showing billing achieved, outstanding billing, delays, and cash-flow implications.