Role: Chief of Staff
Stelumar Advanced Manufacturing Inc.
Employment Type: Full-Time, Permanent
Reports to: General Manager
Stelumar Advanced Manufacturing Inc. (SAMI or Stelumar) is a technology-driven company dedicated to revolutionizing homebuilding in Canada through advanced modular building solutions. Founded by Canadian entrepreneur Peter Gilgan, founder of Mattamy Homes, Stelumar combines automation, robotics, and AI to modernize construction and help address the housing shortage. With state-of-the-art manufacturing facilities in the Greater Toronto Area, Stelumar is focused on accelerating construction timelines, improving consistency and making housing more attainable. Stelumar produces precision-built walls, floors, and roofing systems, factory-built modular units, and interior cabinetry and millwork at industrial scale. Its development and construction arm, Stelumar Communities, delivers scalable modular housing from planning and design to construction and handover. The team supports low- and mid-rise residential, purpose-built rental, affordable and workforce housing, student housing, hospitality, healthcare-related housing, and institutional developments. Together, Stelumar is delivering housing people are proud of.
The Chief of Staff is a high-impact operating partner to the General Manager, helping translate the company’s most important priorities into decisions, execution, and measurable results. Working across commercial, operations, finance, product, technology, and other functions, this role will tackle ambiguous, cross-functional problems, build the operating cadence that keeps leaders aligned, and ensure critical initiatives move from analysis to action.



Own high-priority business questions end to end: frame the problem, build the analysis and financial models, surface trade-offs, and deliver clear recommendations the General Manager and leadership team can act on.
Partner with the General Manager on enterprise priorities, annual and quarterly planning, and special strategic initiatives, ensuring attention and resources are focused on the areas of greatest impact.
Prepare concise, decision-oriented materials for leadership discussions and follow through on decisions, commitments, and unresolved issues.
Operating cadence and performance
Run the management cadence for the business, including weekly operating reviews, KPI tracking, quarterly planning, and action follow-up.
Lead selected commercial and operational initiatives, including business cases, partnership models, process design, or scaling initiatives where cross-functional leadership is required.
Work directly with teams in offices, manufacturing facilities, project environments, and other operating settings to understand issues at the source rather than relying only on reported information.
Build practical tools, dashboards, workflows, and operating mechanisms that make planning and execution more repeatable as Stelumar scales.
Use AI, automation,



and modern analytical tools to improve the speed and quality of analysis, reporting, and business processes.
Post-secondary education in engineering, business, finance, economics, or a related field.
5+ years of experience in private equity, management consulting, investment banking, strategy, high-growth operations, running your own company, or another role requiring rigorous analysis and cross-functional execution.
Exceptional structured problem-solving and financial acumen, including the ability to build a model from a blank sheet, pressure-test assumptions, and translate analysis into a clear recommendation.
A track record of taking ambiguous problems from question to answer to implementation, with solid ownership and attention to detail.
Clear, concise written and verbal communication, sound judgment, and the ability to influence and align senior stakeholders without relying on formal authority.
Demonstrated use of AI or automation to improve personal productivity or business processes.
Advanced proficiency in Excel.
Bonus Points
Experience in advanced manufacturing, construction, modular building, industrial technology, real estate development, or another asset-intensive operating environment.
Experience designing operating cadences, integrated business planning processes, or executive-level performance reporting.
Stelumar is committed to providing accommodation for people with disabilities. Stelumar may use artificial intelligence (AI) tools to support our hiring process, including to help screen or assess candidates along the way. These tools work behind the scenes, while people remain at the heart of every hiring decision.

📌 Chief of Staff (Technology Management) (Mississauga)
🏢 Mattamy Homes
📍 Mississauga