Chief of Staff

Mattamy Homes; Toronto; On-site; CAD 150,000 - 210,000; Full time

Benefits offered by this job

Advanced manufacturing exposure

Executive collaboration environment

Job summary

Stelumar Advanced Manufacturing Inc. in Etobicoke & Mississauga, Ontario, is seeking a Chief of Staff to partner with the General Manager and translate priorities into actions.

You will work across commercial, operations, finance, product, technology, and other functions, tackling ambiguous problems with rigorous analysis and scalable execution. The role offers a hands-on, high-impact operating path with potential progression into an operating role within Stelumar, leveraging AI tools and modern

Qualifications

• Post-secondary education in engineering, business, finance, or economics.
• 5+ years in cross-functional, data-driven roles with rigorous analysis.
• Strong financial modeling and problem-solving capabilities.
• Track record of turning ambiguity into action and implementable steps.
• Clear written and verbal communication with sound judgment.
• Interest in manufacturing and technology-enabled operations.

Responsibilities

• Own high-priority business questions end to end: frame, model, surface trade-offs, and deliver recommendations.
• Partner with the General Manager on enterprise priorities and planning cycles.
• Prepare concise, decision-oriented leadership materials and follow through on actions.
• Run the management cadence: weekly reviews, KPI tracking, quarterly planning.
• Lead cross-functional initiatives and drive work to completion.
• Collaborate with teams across offices, manufacturing facilities, and projects.
• Build tools, dashboards, and operating mechanisms to scale.
• Leverage AI/automation to improve analysis, reporting, and processes.

Skills

Cross-functional exp

Analytical thinking

Communication skills

Ownership & accountability

Manufacturing context

AI/Automation use

Adaptability

Education

Engineering/Business/Finance

Tools

Excel

Job description

Role: Chief of Staff

Location: Etobicoke & Mississauga, Ontario

Company: Stelumar Advanced Manufacturing Inc.

Department: Executive

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.

For more information, visit Stelumar.com.

What we offer

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. This is a hands-on opportunity for a rigorous generalist who wants to learn the business from the inside-out, then move into an operating role within Stelumar. The operating job at the end is the point of the role, not a side benefit.

What you’ll do

Strategic priorities and executive decision support

• 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.

Cross-functional execution

• Get complex initiatives unstuck by bringing the right leaders together, clarifying decisions and accountabilities, and driving work to completion.
• 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 and scale

• 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.
• Take on evolving scope as business needs change, with the opportunity to assume deeper ownership of an operating area over time.

Other duties as assigned

What you bring

• 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 strong 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.
• Comfort operating close to the work in a physical, technology-enabled business and curiosity about manufacturing, construction, and how complex operating systems work.
• Demonstrated use of AI or automation to improve personal productivity or business processes.

• Advanced proficiency in Excel..
• Adaptability and a willingness to work across a changing scope as the company grows.

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. If you require accommodation through any aspects of the selection process, please notify us on your application and we will work with you to meet your needs.

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.

Qualified applicants for this existing vacancy will be contacted directly by the Talent Acquisition team.