Pipe welding Jobs in Markham, ON

Role Summary
The QA/C Technician – Welding & Fabrication supports quality assurance activities within the pipe spool fabrication and welding shop. This role focuses on monitoring the full welding and fabrication process—from material verification and fit-up through welding, testing, and final inspection—to ensure compliance with applicable codes, project specifications, and internal quality procedures. Success in this role requires strong technical knowledge of welding processes, metallurgy, and fabrication practices, along with the ability to proactively prevent defects and support consistent production quality.

Why This Role Matters to Modern Niagara
Quality in fabrication directly impacts safety, reliability, and project delivery. This role plays a critical part in ensuring fabricated piping systems meet regulatory, code, and client requirements before leaving the shop. By identifying issues early and supporting continuous improvement, the QA/QC Technician helps reduce rework, protect schedules, and uphold Modern Niagara’s reputation for high-quality industrial and mechanical solutions.

Key Impact / Purpose

• Ensure welding and fabrication activities comply with ASME, CSA, TSSA, project specifications, and internal quality standards.
• Prevent defects by monitoring welding processes and fabrication practices throughout production.
• Support safe, reliable, and traceable delivery of fabricated piping and assemblies.
• Contribute to continuous improvement through defect tracking, root cause analysis, and corrective actions.

Duties and Responsibilities:

Welding Process Monitoring:

• Monitor fit-up, joint preparation, alignment, root gap, bevel angles, and dimensional tolerances prior to welding.
• Verify compliance with approved Welding Procedure Specifications (WPS), Procedure Qualification Records (PQR), and welder qualifications.
• Observe welding techniques and parameters to ensure adherence to procedures and prevent defects.

Material and Traceability Control:

• Verify material traceability, including heat numbers, markings, and Mill Test Reports (MTRs), prior to fabrication.
• Confirm correct materials are issued to the shop and remain properly identified throughout fabrication.
• Inspect incoming piping materials, fittings, flanges, and components against project specifications.

In-Process and Final Inspection:

• Perform visual and dimensional inspections of pipe spools, plumbing assemblies, sleeves, and skids.
• Confirm orientation, flange alignment, and dimensional accuracy against isometric and fabrication drawings.
• Inspect welds and fabrication details prior to release for NDT or hydrotesting.

NDT and Testing Coordination:

• Coordinate visual and non-destructive testing (RT, UT, MT, PT) in accordance with Inspection Test Plans (ITPs).
• Track acceptance rates and weld repair percentages.
• Review NDT reports and verify compliance with applicable acceptance criteria.

Hydrotesting and Mechanical Completion:

• Witness and document hydrostatic and pressure testing activities.
• Verify test setups, pressures, and documentation prior to release for shipment.

Quality Documentation:

• Maintain inspection records, weld logs, NDT reports, material traceability records, and turnover packages.
• Record Non-Conformance Reports (NCRs) and maintain defect logs for trend analysis and KPI reporting.
• Support compilation of final quality dossiers and project documentation.

Continuous Improvement:

• Participate in root cause analysis of recurring weld and fabrication issues.
• Recommend corrective actions to improve weld quality, fit-up procedures, and shop practices.
• Promote quality awareness and adherence to procedures across the shop floor.

Must Haves:

• Diploma or degree in Welding Engineering Technology, Metallurgy, Mechanical Engineering Technology, Welding Inspection, or Quality Control.
• 3–5 years of experience in welding inspection or quality control within a pipe fabrication, pressure piping, or industrial manufacturing environment.
• Experience inspecting carbon steel and stainless steel fabrication.
• Strong understanding of welding processes (GMAW, GTAW, FCAW, SMAW), welding metallurgy, and heat effects.
• Ability to read and interpret piping isometrics, P&IDs, weld maps, and fabrication drawings.
• Knowledge of applicable codes and standards, including ASME , CSA, TSSA, pressure piping requirements, and Inspection Test Plans (ITPs).
• High attention to detail with strong documentation and reporting skills.
• Ability to collaborate effectively with welders, fitters, supervisors, and project teams.

Nice to Haves:

• CWB Level 1 or Level 2 Welding Inspector certification.
• NDT certification or hands-on familiarity with MT, PT, and UT.
• Experience in pressure piping or industrial process piping fabrication environments.

This is a new position. Expected annual compensation; $58,000 - $72,000.

Modern Niagara offers a competitive total compensation package including:

• Performance based bonus opportunities
• Defined Contribution Pension Plan with a generous employer contribution
• Flexible Health and Dental benefits with tiered options to meet the needs of you and your family
• An annual health spending account to support your overall wellness
• 24/7 confidential support through our Employee and Family Assistance Program with access to comprehensive resources and professional services
• A competitive vacation package with additional vacation granted throughout your tenure with the organization.
• Employer Paid Parental Leave Top Up
• Annual Community Day dedicated to volunteering and giving back to the communities where we live and work
• Corporate Discounts through various vendors across Canada for programs such as fitness, mobile phones, travel, home and auto insurance and many others

Here at Modern Niagara, because we know our people are the best in the industry, we pride ourselves on providing a total compensation package that rewards employees for their hard work and supports employees and their families in their overall wellbeing.

About Modern Niagara

Who We Are

Modern Niagara helps building owners, managers, and general contractors meet the mechanical, and electrical needs of their buildings across Vancouver, Calgary, Edmonton, Toronto, Southwestern Ontario, and Ottawa. We are committed to having a positive and meaningful impact on Canada’s infrastructure — and on the communities where we live, learn, work, and heal. We build for life.

Our Culture & Values

We value passion, initiative, determination, professionalism, and teamwork. Health and safety are embedded in everything we do, and our award-winning safety culture consistently performs well above industry standards.

Diversity, Equity & Inclusion at Modern Niagara

We are committed to building a diverse, equitable, and inclusive organization where everyone has access to opportunity, feels a sense of belonging, and can thrive. We actively work to remove barriers faced by members of equity-seeking groups (including women, Indigenous, Black, racialized, 2SLGBTQIA+ people, people with disabilities, and newcomers to Canada) in the construction industry. We encourage applications from candidates of all backgrounds and lived experiences and are committed to a barrier-free hiring process. If you require accommodation at any stage of the recruitment process, please contact us at so we can make appropriate arrangements.

We appreciate every applicant’s interest in joining Modern Niagara. Only those selected for an interview will be contacted.