Who We Are

Engineering with integrity
At Lonergan Engineering, integrity drives everything we do. Now in our second decade of operations, we’ve established a highly esteemed practice, including industry leadership in integrated systems testing.
We’re more than engineers—we’re problem solvers, educators, and industry advocates. We believe in sharing knowledge, building strong partnerships, and delivering real-world solutions that ensure our clients’ success. Because, frankly, we give a damn.
How we’re different
We bridge the gap between engineering and execution. Our team blends licensed engineers, trade professionals, and experienced managers, bringing both technical expertise and hands-on know-how. This balance allows us to design solutions that are not only innovative but also practical, cost-effective, and built to work in the real world.
Our consulting practice
We are deeply committed to the discipline that defines our profession. As consulting engineers, we comply with a stringent set of regulatory requirements defined by professional engineering licensing bodies. We maintain relevant licensing, continuous learning practices and are actively engaged in developing the next generation of engineers.
We are recognized by multiple industry associations
Specialized expertise in electrical engineering and integrated systems testing

Electrical Engineering
We provide engineering and design services that power our local hospitals, schools, office spaces and industrial facilities. Whether it’s a new build, renovation or retrofit, we provide expert engineering services, feasibility assessments, and due diligence reporting to ensure safe, efficient, and future-ready solutions.

Integrated Systems Testing
As an independent Integrated Testing Coordinator (ITC), we are the trusted partners to verify that fire protection and life safety systems work together as designed under normal and emergency conditions. As a ULC Listed firm, we develop test plans, oversee implementation, and document results – ensuring compliance with relevant standards and giving building owners confidence in their operations.
Our team is ready to work with you

Michael Lonergan
P. Eng.
Consulting Engineer

Karima Dharssi
P. Eng., LEED AP
Senior Electrical Engineer

Sarah Lonergan
Administrator

Karolina Gaworecka
RSE
Integrated TestingCoordinator
Expert solutions across multiple sectors