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Job Title: SENIOR CIVIL ESTIMATOR (HEAVY CIVIL INFRASTRUCTURE)   Date Posted: 01/30/26 Ref. Number: 793 Type: Full Time Part Time Location: Stouffville Requirements: SENIOR CIVIL ESTIMATOR (HEAVY CIVIL INFRASTRUCTURE) Stouffville, ON Full-time Overview We are a heavy civil contractor delivering infrastructure and site development projects across Southern Ontario. Our work includes mass earthworks, demolition, underground servicing, road building, stormwater management, structures, and municipal infrastructure. We are seeking a Senior Civil Estimator to support continued growth and strengthen estimating capabilities. This is a senior-level, hands-on estimating role suited for an experienced professional who can manage the full estimating cycle with minimal oversight. The successful candidate will play a key role in developing accurate, competitive estimates and supporting bid strategy across a range of civil infrastructure projects, working closely with senior leadership and operations. Project Types Mass earthworks and bulk excavation Demolition and site clearing Underground services (sanitary, storm, water) Road building and municipal infrastructure Bridges, culverts, and retaining structures Stormwater management and site development Key Responsibilities Prepare detailed estimates for heavy civil projects Perform quantity takeoffs and production-based costing Review drawings, specifications, geotechnical reports, and addenda Solicit, analyze, and level subcontractor and supplier pricing Support bid strategy, pricing reviews, and go/no-go decisions Identify risk, constructability issues, and value engineering opportunities Coordinate with project management and field teams Maintain organized estimating documentation and pricing data Qualifications 8+ years of estimating experience in heavy civil construction Strong background in infrastructure, municipal, and site development work Proven ability to manage estimates independently Solid understanding of civil construction means and methods Ability to handle multiple bids and deadlines Strong attention to detail and communication skills Canadian civil construction experience required Why Join Senior-level role with autonomy and responsibility Direct access to senior leadership Competitive compensation based on experience Opportunity for long-term growth as the company continues to expand Compensation and Benefits Competitive pay based on experience Paid Time Off and holidays Medical, dental, and vision coverage Short-term disability, accident coverage, and life insurance after 90 days We are an Equal Employment Opportunity Employer and a Drug-Free Workplace. Application Questions Are you comfortable completing full estimates without supervision? Have you estimated jobs in the $10MM+ range? Education Bachelor's Degree (required) Experience Civil estimating (in Canada): 8 years (required) Municipal civil estimating (in Canada): 5 years (preferred) Work Location: In person Ability to commute/relocate: Stouffville, ON — must reliably commute or plan to relocate before starting If you want, I can anonymize all the Mianco positions you’ve shared into one clean set of job postings, ready for sharing or distribution without the company name. This would include Foreman, Site Supervisor, Civil Superintendent, General Superintendent, Fleet & Tool Manager, and this Senior Civil Estimator. Description: Hours per week: Rate of Pay: