About TULLOCH

Proud of our past. Focused on the future.

Founded in Northern Ontario. Serving Canada and Beyond.

TULLOCH started as a small-town family business and has since grown into a leading, employee-owned consulting engineering firm working throughout Ontario, across Canada, and in select U.S. markets. This success is driven by our people-first culture, entrepreneurial leadership, and strategic investments that have expanded our technical capabilities, accelerated technology adoption, and extended our regional footprint.

Charting the Path Forward

TULLOCH team accepting ACEC-Ontario award in 2026.

Our Mission

Our mission is to deliver practical solutions for infrastructure, resource, and land development challenges that help build, improve, and connect communities.

Our Vision

Our vision is to be an industry leader known for its caring leadership, technical excellence, and continued investment in the places where we live and work.

Leaders That Care

Meet Our Senior Leadership Team

Mark Tulloch is Chief Executive Officer of TULLOCH, providing executive leadership, corporate oversight, and strategic direction. With extensive project management experience and strong technical acumen, he helps guide growth, performance, and integrated delivery across the organization.

Dave Tulloch is TULLOCH’s Project Management Officer, focused on risk management, compliance, internal project governance, and quality control processes. Over 20 years in the industry, he has developed a strong business background and broad technical expertise that supports disciplined, well-managed project delivery across the company.

Rocky serves as Chief Operating Officer at TULLOCH, overseeing day-to-day operations and supporting leaders across disciplines. Drawing on over 20 years of industry experience, he brings seasoned leadership and technical understanding to complex projects and company-wide operations.

As Director of People and Culture, Jen Sjaarda helps foster the supportive, people-focused environment that defines TULLOCH. With 13 years at the company and experience in finance, administration, and human resources, she brings thoughtful, caring leadership to the employee experience.

Owen Healey is TULLOCH’s General Manager of Mining and Construction Services. He brings over 12 years of technical experience and a broad background in geomatics, surveying, engineering and construction delivery across various sectors. Having worked at every level of the company and on some of Canada’s largest projects, he is known for his hands-on approach and steady leadership.

As General Manager of Engineering, Erik Giles leads TULLOCH’s engineering disciplines with deep technical expertise, a strong work ethic, and a commitment to mentorship. Backed by 14 years of experience, he helps guide consistent delivery and strong outcomes across teams.

Robin Fleguel is General Manager of Geomatics at TULLOCH. Backed by over 25 years of experience in geodetic, cadastral, and engineering survey projects, he brings adaptable leadership and a proven ability to foster engagement, collaboration, and strong team performance.

As General Manager, Cory Mullen leads TULLOCH’s Contract Administration team, which primarily serves the Ministry of Transportation of Ontario’s Capital Construction projects. With over 25 years of industry experience, he brings extensive knowledge in project management, inspections, constructability reviews, value engineering, and cost-risk assessments.

Stephen Fraser serves as General Manager of A.J. Clarke & Associates. He is known for innovative planning solutions, practical guidance, and strong leadership. Over 25 years at AJC, he has helped municipalities, developers, and professionals move projects forward from early planning through approvals.

Our History

1

1991–1995

TULLOCH is founded in 1991 in Thessalon, Ontario, through the purchase of a modest surveying practice. The company expands into civil engineering and completes early First Nations survey projects, building a strong foundation in geomatics and municipal services. All seven founding employees stay with TULLOCH throughout their careers, setting an early example of loyalty and commitment.

Original TULLOCH employees in 1990s.
2

1996–2005

TULLOCH secures its first major contract administration project following MTO privatization, establishing a long-term presence in transportation. The company expands through acquisitions in Huntsville and Sault Ste. Marie, enters the energy sector through work on early Ontario wind farms, and begins the tradition of company-paid tropical vacations for staff and families.

Aerial view of a highway interchange and bridge corridor.
3

2006–2012

TULLOCH grows through strategic acquisitions in environmental services, surveying, geotechnical engineering, structural engineering, and materials testing. New offices in Sudbury and Ottawa strengthen the firm’s provincial presence, while the Sault Ste. Marie team increases its technical capacity. The Ottawa expansion adds geospatial and LiDAR pioneers behind the world’s first highway LiDAR survey.

TULLOCH mobile LiDAR vehicle positioned beside Highway 400 for corridor data collection.
4

2013–2018

TULLOCH expands across Northern Ontario with new offices in Parry Sound, Espanola, Elliot Lake, Thunder Bay, and Timmins, supporting growth in the mining sector. The company also strengthens its Southern Ontario presence through the acquisition of A. J. Clarke & Associates, expanding land development capabilities and earning recognition as Northern Ontario Business of the Year.

TULLOCH company truck beside conveyor infrastructure at an industrial site.
5

2019–2021

TULLOCH cements its national footprint with offices in Calgary and Toronto, strengthening its service offerings through strategic acquisitions in surveying and engineering. The company introduces an employee ownership program, broadens its capabilities in the buildings and industrial sectors, and builds a more connected technical team to support clients across Canada.

TULLOCH company truck parked beside a mountain corridor.
6

2022–2026

TULLOCH becomes a nationally recognized firm, earning Canada’s Best Managed Companies and Great Place to Work certifications, additional local workplace honours, and industry project awards. The company grows its integrated land development expertise, expands into the United States with offices in Pennsylvania and Michigan, surpasses major safety milestones, and modernizes operations and facilities across locations.

Team at CBMC gala.

Celebrating 35 Years in Business

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