General Contractor Assistant Jobs in Hamilton, ON

Mechanical Project Manager

Maple Reinders Constructors is seeking a Mechanical Project Manager to support our self‑performing mechanical team across our civil infrastructure, industrial and food & beverage projects. This role focuses exclusively on process mechanical work, providing day‑to‑day leadership, coordination, and project delivery support for our in‑house mechanical crews.

The Mechanical Project Manager plays a key role in ensuring work is completed safely, efficiently, and in alignment with project requirements, while maintaining strong communication with internal teams, subcontractors, suppliers, and clients.

Job Duties:

• Develop and maintain project plans, schedules, and work assignments for the self‑performing mechanical team.
• Coordinate process mechanical construction activities on various projects such as water/wastewater, industrial, and food & beverage.
• Assist in selecting suppliers and sub‑trades, obtaining quotations, and supporting procurement for mechanical scopes.
• Manage and track submittals, RFIs, and shop drawing reviews for mechanical components.
• Maintain organized project documentation, administration files, and drawing control.
• Participate in and support QA/QC processes for mechanical installation work.
• Monitor progress and assist with preparing cost forecasts, budgets, and progress payment documentation.
• Support the preparation and negotiation of change orders related to mechanical scope.
• Collaborate closely with project managers, site supervisors, and estimating teams to provide mechanical expertise.
• Attend and contribute to project and coordination meetings with sub‑trades, suppliers, and internal project teams.
• Ensure all mechanical work is completed safely, meets required standards, and aligns with contract documents.
• Support obtaining required permits and inspections for mechanical installations.
• Build and maintain strong relationships with clients, consultants, and vendors.

Qualifications:

• 5+ years of experience in mechanical construction project coordination or project management (ideally with a general contractor or self‑performing contractor).
• Relevant education: Mechanical engineering, mechanical technology diploma, mechanical trade background, or a combination of experience and training.
• Hands‑on experience with process mechanical systems in civil infrastructure or industrial environments (water/wastewater, food & beverage, etc.).
• Strong understanding of mechanical installation practices, sequencing, and construction methodologies.
• Valid driver’s license and access to a vehicle.

About Maple Reinders:

Maple Reinders is one of Canada’s most respected and trusted construction firms, delivering innovative solutions for over 55 years. We are a full-service construction provider specializing in ICI buildings (industrial, commercial, institutional) and civil/environmental projects such as water and wastewater treatment plants, composting facilities, energy-from-waste, and biogas systems.

With 500+ team members across six offices nationwide and more than 2,900 projects completed coast-to-coast, we’ve built a reputation for excellence, adaptability, and integrity.

We are proud to be:

• A Platinum Member of Canada’s Best Managed Companies
• Certified Great Place to Work
• Recipients of numerous awards for innovation, sustainability, and design

We want an individual who will embody Maple Reinders core values of

• People – Supporting our people to thrive.
• Integrity – Doing the right thing without compromise.
• Relationships – Building trust with clients & partners.
• Stewardship – Caring for communities & the environment.
• Ingenuity – Embracing challenges. Encouraging ideas. Engineering solutions.

Why you should work here:

• Competitive Salaries (paid weekly)
• Company branded truck and gas card
• Starting at three weeks paid vacation plus additional gifted days off over the Christmas break
• RRSP with employer matching (up to 5%)
• Discretionary bonuses & profit sharing
• Group Health Insurance Plan (medical, dental, health care spending account)
• Life insurance and disability coverage
• Employee rewards program (Maple Points)
• Discount programs & memberships
• Employee and Project referral bonuses
• Employee Assistance Program
• Career growth and learning opportunities, including professional certifications

Salary Range: $100,000 - $145,000 / Year (depending on experience)

Location: Mississauga, ON

We use artificial intelligence (AI) to review resumes of candidates and assess their fit based on the criteria outlined in the job posting. We do not use AI to make any final hiring or interview decisions.

Maple Reinders is an equal opportunity employer and supports employment equity and diversity in the workplace. We encourage applications from all qualified individuals including women, visible minorities, Indigenous Peoples, persons with disabilities, and others who reflect our ever-changing workplace. Upon request, Maple Reinders accommodates candidates with disabilities throughout the hiring process. If you require accommodation during the hiring process, please contact hr@maple.ca