<p>Aecon Concessions in Scarborough, Ontario, is hiring a Commercial Manager to lead complex contract and variation management on major rail infrastructure projects. The role emphasizes managing scope changes, estimating, scheduling, and cost control, with collaboration across leadership, project managers, contractors and consultants.</p><p>The ideal candidate will have a bachelor’s degree in a related field, 8–10 years in large-scale infrastructure, and 3–5 years in comm...