Aecon Concessions is seeking a Senior Estimator (Transmission) to accurately estimate labour, equipment, and material costs for transmission projects across Canada. Reporting to the Estimating Manager, you will lead tender submissions and coordinate with Operations, PMO, and Owners to ensure pricing accuracy and compliance. Candidates based in any Aecon office in Canada are welcome. The role requires a civil/construction/electrical/business background with 10+ years in estimating and solid MS