Senior Production Associate - Window Assembly/Mulling

Cornerstone Building Brands

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St. Thomas, ON, ca on site Until 8/21/2026 First posted May 28, 2026 Last posted May 28, 2026
Job description

We are looking for a self-motivated, dependable individual to join our team as a Senior Production Associate (Window Assembler/Mulling), where independence, focus, and quality workmanship are key to success.

Starting rate for this position is $24.45/hour. Additional increase opportunities available based on cross-training and demonstrated skill progression.

  • Perform final assembly of vinyl window products to meet production and quality standards
  • Install interior and exterior components, including brickmould, nailing fin, jamb extensions, and reinforcements
  • Assemble individual windows into larger combination units using couplers
  • Scan completed mulling products and verify order accuracy
  • Conduct quality inspections to ensure all finished products meet specifications
  • Maintain a clean and safe work environment
  • Primary responsibilities will focus on mulling; however, candidates are expected to cross-train and rotate between workstations as directed by the supervisor to meet business needs.
  • Primary responsibilities will focus on mulling; however, flexibility to rotate between stations and tasks as directed by the supervisor is required to support business needs.
  • Highly self-motivated with the ability to work independently without constant supervision (critical requirement)
  • Demonstrated ability to stay focused, manage time effectively, and avoid distractions in a fast-paced production environment
  • Strong problem-solving and troubleshooting skills with a proactive approach to identifying and resolving issues
  • Ability to take initiative and adapt quickly to changing tasks and priorities
  • Ability to accurately read a tape measure
  • Experience using power and hand tools is required
  • Physically capable of lifting, moving, and handling windows weighing up to 100 lbs
  • Ability to read and write in English
  • Strong commitment to workplace safety
  • High attention to detail with a focus on product quality
  • Strong attendance and reliability is essential
  • Ability to work a bi-weekly rotating shift schedule
  • Willingness and flexibility to work overtime as required to meet production and business demands
  • Knowledge of window products is an asset
  • Basic computer skills are considered an asset

All your information will be kept confidential according to EEO guidelines.

About this role

Summary

Perform window assembly, quality inspection, and cross-train on different workstations in a fast-paced environment.

Job title

Senior Production Associate - Window Assembly/Mulling

Experience level

no experience required

Industry

manufacturing

Location requirements

St. Thomas, Ontario, on, no remote work

Salary

$61k+

Management role

No

Skills & keywords

Required skills

power toolshand toolsread tape measurephysical strengthwork safety

Preferred skills

window productsbasic computer skills

Specializations

window assemblymullingproduction
Locations

Structured locations inferred from the posting.

St Thomas, ON, Canada

On-site City