ABOUT US

A consulting engineering firm that develops and manages critical infrastructure for communities across Ontario.

Silhouettes of business people overlaid on a city skyline at sunset
01. About The Company

Engineering Infrastructure That Lasts

TSI Inc. is a leading consulting engineering firm that develops and manages critical infrastructure projects.

With decades of experience serving government agencies, private enterprises and communities, we have earned a reputation for delivering innovative and sustainable solutions that enhance the quality of life and promote economic growth.

See what we do →

Sustainable development is the pathway to the future we want for all. It offers a framework to generate economic growth, achieve social justice, exercise environmental stewardship and strengthen governance.

— Ban Ki-moon

What We Do

Aerial view of a multi-level highway interchange

Planning, design and construction management of roadways, bridges and transit systems that improve safety, traffic flow and connectivity.

Steel roof trusses against a blue sky

Meticulous design, analysis and inspection that ensure the integrity and safety of buildings, bridges and other critical structures.

Calm creek reflecting the sky with a bridge in the distance

Hydraulic analysis, drainage system design and flood mitigation strategies that manage water effectively.

green fields with mountains in the background

Sustainable solutions for wastewater treatment, site remediation and air quality management.

Water treatment plant tanks at sunset

Planning, design and management of sewer and water systems, waste management facilities and public works.

Night-time inspection work beneath a highway overpass with work lights

Comprehensive inspections of existing infrastructure to confirm safety and compliance and identify maintenance or rehabilitation needs.

02. How We Work

Client-Focused, Committed to Excellence

Client-Focused Approach. We prioritize collaboration and client satisfaction, working closely with clients to understand their challenges and objectives and to develop innovative, cost-effective solutions that meet every applicable regulation and industry best practice.

Commitment to Excellence. Our dedication to quality, innovation and partnership drives us to exceed expectations and deliver projects with a lasting positive impact on our communities.

Talk to our team →

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Our Statement of Purpose

TSI Inc.: Engineering a Sustainable Future. We are dedicated to engineering a better future for our communities through innovative, sustainable infrastructure solutions.

Delivering Excellence

Exceeding client expectations through strategic planning, rigorous engineering and precise execution.

Fostering Collaboration

Strong partnerships with clients, stakeholders and communities, built on open communication at every phase.

Driving Innovation

Adopting new technologies and methods to optimize designs, improve efficiency and promote sustainability.

Shaping Communities

Resilient, accessible and environmentally responsible infrastructure that helps communities grow and prosper.

Empowering Our People

A supportive workplace that fosters professional growth, values diverse perspectives and empowers our team.

Have a project in mind?

Talk to our team about how TSI can help plan, design and deliver your next infrastructure project.