Director, Human Resources (Head of HR)

Company Overview

Mattina Mechanical Limited (MML), headquartered in Hamilton, Ontario, is a premier mechanical contracting firm recognized for delivering complex, high-impact projects across institutional, commercial, and industrial 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.

As MML continues to expand, the organization is seeking an experienced HR leader to build upon its people strategy and elevate the HR function to drive performance, engagement, and long-term organizational success.

Executive Summary

The Director, Human Resources (Head of HR) is a critical member of the leadership team, responsible for shaping the overall people strategy and leading the HR function across the organization. This role requires a strategic leader with proven experience in organizational development, talent management, employee engagement, and HR operations.

The Director, HR will lead and mentor a team of four HR professionals while acting as a trusted advisor to senior leadership on all people-related matters. This includes upholding and advancing MML’s open shop culture, ensuring that HR policies, communications, and people programs reinforce a merit-based, inclusive environment built on trust and collaboration. This role is about building, modernizing, and leading HR transformation, not maintaining status quo.

This role balances strategic leadership with hands-on execution, ensuring that HR initiatives are aligned with business objectives, support operational needs, and foster a strong organizational culture.

What You’ll Be Doing

Strategic Leadership and Organizational Development

• Develop and execute a comprehensive HR strategy that supports MML’s business goals, growth plans, and cultural objectives.
• Partner with executive leadership to drive organizational design, workforce planning, and succession planning initiatives.
• Serve as a strategic advisor on leadership development, performance management, and organizational effectiveness.
• Lead change management initiatives to support growth, operational efficiency, and cultural transformation.
• Analyze workforce metrics, trends, and data to inform business decisions and identify opportunities for improvement.

Employee Relations and Culture

• Foster a positive, inclusive, and high-performing culture aligned with MML’s core values and open shop principles of fairness, opportunity, and respect for employee choice.
• Provide guidance to leadership on employee relations matters, conflict resolution, and performance issues.
• Ensure effective communication channels and feedback mechanisms that support engagement and alignment across field and office teams.
• Support initiatives that strengthen MML’s identity as a preferred open shop employer within the construction industry.

HR Operations, Compliance, and Risk Management

• Lead a team of four HR professionals to deliver consistent, high-quality HR services across recruitment, onboarding, training, employee relations and HR administration.
• Develop, implement, and continuously improve HR policies, procedures, and systems that support operational efficiency and scalability.
• Oversee compensation and benefits programs, ensuring competitiveness and alignment with organizational objectives.
• Support health and safety initiatives, working closely with operations and field teams to maintain compliance and promote a safe working environment.

Leadership and Team Development

• Build, mentor, and develop an HR team capable of delivering strategic and operational excellence.
• Provide coaching and development to executives and managers to strengthen leadership capability and accountability.
• Establish HR metrics and reporting systems to track effectiveness and demonstrate the impact of HR initiatives.

Performance Management, Training & Development

• Redesign and implement a modern performance management framework that connects individual goals, KPIs, compensation, and development opportunities.
• Introduce structured leadership and professional development programs to build internal capability and support career progression.
• Establish clear career paths and training initiatives that enable internal mobility and reinforce the company’s commitment to promoting from within.

Talent Acquisition and Retention

• Oversee the development and execution of a proactive recruitment strategy to attract top talent across technical, operational, and leadership roles.
• Implement robust onboarding programs that accelerate employee integration and engagement.
• Develop retention programs, recognition initiatives, and career development pathways to enhance employee satisfaction and reduce turnover.

Requirements

What you bring

• Bachelor’s Degree in Business, HR or related discipline; CHRP or CHRL designation preferred.
• Minimum 10 years of progressive HR leadership experience, including at least 3 years in a senior or Director-level role managing a team.
• Proven success building or transforming HR functions ideally in construction, mechanical contracting, manufacturing, or industrial environments.
• Skilled at balancing strategic vision with hands-on execution in mid-sized, owner-led organizations.
• Strong understanding of Ontario employment law, labour relations, and HR best practices within open shop environments.
• Demonstrated ability to balance strategic thinking with operational execution in a fast-paced, growth-oriented environment.
• Exceptional leadership, communication, and stakeholder management skills.
• Experience building, mentoring, and leading high-performing HR teams.

Key Competencies

• Strategic thinking and business acumen
• Leadership and executive presence
• Change management and organizational design
• Employee engagement and culture development
• Understanding and advocacy of open shop values

Benefits

Why Mattina Mechanical

• Lead a high-impact HR function in a growing, respected organization.
• Shape and influence company culture and people strategy at the executive level.
• Collaborate with a leadership team committed to operational excellence and professional development.
• Competitive compensation, benefits, and professional growth opportunities

For consideration, please apply online. 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 in MaxPeople but only those selected for an interview will be contacted.