Looking For Your Next Adventure?

About The Company

Mattina Mechanical Limited (MML), headquartered in Hamilton, Ontario, is a privately owned, premier mechanical contracting firm recognized for delivering complex, high-impact projects across institutional, commercial, industrial and mid-high-rise residential sectors. Renowned for precision, reliability, and an unwavering commitment to safety and quality, MML combines technical expertise with innovative solutions to exceed client expectations.

The company’s growth is fueled by operational excellence, forward-thinking strategies, and a culture that champions collaboration, integrity, and the continuous development of its people. MML proudly operates as an open shop contractor, maintaining a workplace where opportunity is based on performance, skill, and commitment. The company values employee choice, respect, and fairness while fostering a unified culture built on teamwork, transparency and shared success.

Role Overview

MML is seeking a Buyer to join its Purchasing team in Hamilton, Ontario. Reporting to the Senior Manager, Procurement and IT, the Buyer will support active construction projects and operations through the purchasing, coordination, expediting, and management of materials, equipment, and supplies.

This position is ideal for a highly organized and detail-oriented purchasing professional who enjoys working in a fast-paced construction environment, coordinating multiple priorities, building strong vendor relationships, supporting project teams, and proactively managing purchasing and delivery-related challenges.

What You’ll Be Doing

• Procure materials, equipment, and supplies to support active construction projects and operations
• Receive and manage material requirements and purchasing requests from internal teams
• Coordinate with Shop Logistics personnel to verify inventory and clarify purchasing requirements
• Create and manage purchase orders based on project and operational needs
• Monitor open purchase orders and proactively follow up on deliveries or delayed materials
• Expedite shipments and work with suppliers to resolve delivery, quality, or quantity issues
• Build and maintain effective relationships with suppliers and vendors
• Evaluate suppliers, pricing, and products to support cost-effective purchasing decisions and project requirements
• Negotiate pricing, delivery timelines, and purchasing requirements with suppliers
• Work closely with Project Managers and Coordinators regarding material requirements, scheduling, and cost control
• Collaborate with Accounts Payable to resolve invoice discrepancies and purchasing-related issues
• Support internal teams with purchasing coordination, reporting, and procurement process improvements
• Prepare and maintain purchasing records, reports, and supplier information
• Ensure purchasing activities align with company policies, quality standards, and operational requirements

 What We’re Looking For

• 4–7+ years of experience in purchasing, procurement, or supply chain coordination
• Diploma or degree in Business, Supply Chain, Procurement, or a related field preferred
• Experience working within construction, industrial, mechanical contracting, manufacturing, or other project-based environments
• Exposure to construction materials, mechanical systems, HVAC, or plumbing environments considered an asset
• Experience managing purchase orders, vendors, material deliveries, and supplier coordination
• Strong organizational skills with the ability to manage multiple priorities and deadlines in a fast-paced environment
• Ability to build effective working relationships with suppliers, vendors, and internal teams
• Strong written and verbal communication skills
• Proficiency with Microsoft Office tools, particularly Excel, along with exposure to ERP or financial systems environments
• Strong problem-solving, planning, and follow-through skills

Compensation Overview

Annual base salary range: $ 65,000 to $ 85,000, aligned to experience and scope of responsibility. 

 Why Join MML

• Long-term project pipeline and strong financial stability
• Established open-shop mechanical contractor with a collaborative, team-oriented, and flexible work environment
• Annual bonus program
• Employer RRSP contributions
• Comprehensive benefits through MERIT Ontario
• Friendly, family-oriented workplace culture
• Opportunity to work on a variety of institutional, commercial, industrial, and residential construction projects
• Continuing education and professional development opportunities
• Strong commitment to health, safety, quality, and ISO-certified operational standards
• Stable and growing organization with long-term career potential

This is an existing vacancy within the Purchasing Department

For consideration, please apply online.

 Recruitment & Accessibility Notice

We use AI technology as part of our application review process to assist in screening and assessment. All applications are also reviewed by our recruitment team. AI is not used to make hiring decisions.

As part of our commitment to inclusivity, diversity, equity and accessibility, our goal is a workforce built on respect that reflects the communities we serve. We thank all applicants for their interest but only those selected for an interview will be contacted. 

We are proud to be in compliance with the Accessibility for Ontarians with Disabilities Act (AODA), 2005 and the Integrated Accessibility Standards Regulation. We are happy to honour accommodations at any part of the recruitment process and invite you to let us know how we can help.