CAREERS

Build the next 100 years of mechanical engineering

A team of 300+ engineers, technologists, and certified pros. A stimulating environment where technical expertise meets bold innovation — across mechanical design-build, energy, controls, and 24/7 service.

See open roles Spontaneous application
1927
FoundedNearly 100 years in business — financial stability + continuous innovation.
300+
On the teamEngineers, technologists, technicians, certified pros (LEED, CEM, CMVP, RCx).
4
OfficesLaval (HQ), Montréal (Energy division), Toronto, Newmarket.

Why join Kolostat

Four reasons engineering talent stays

Sourced from the team's own retention conversations — the same four points current employees across Kolostat and its Energy division cite when asked why they joined and stayed.

  1. Positive and lasting impact

    A concrete contribution to the energy transition — designing, building, and maintaining mechanical systems that reduce carbon footprints and optimize building energy efficiency.

  2. Continuous professional development

    We invest in the training and certifications (LEED, CEM, CMVP, RCx) that let our people acquire new skills and progress through engineering, energy, and service tracks.

  3. Team spirit and dynamic culture

    A culture built on collaboration, integrity, excellence, wisdom, and fun at work — where respect and camaraderie go hand in hand with ambition and performance.

  4. Stability and innovation

    Nearly 100 years in business with financial stability and continuous innovation — varied, stimulating projects using the most advanced technologies in the industry.

Stability + innovation

With nearly 100 years in business, we combine financial stability with continuous innovation — varied, stimulating projects using the most advanced technologies in the industry.

Our values

Six values, lived every day.

The behaviour we hire for and protect — across engineering, energy, controls, fabrication, and the front office.

  • Collaboration

    We believe in the power of teamwork and cooperation. By working closely with our partners, customers and colleagues, we create effective, sustainable solutions that meet everyone's needs.

  • Integrity

    Honesty and ethics are at the heart of everything we do. We are determined to act transparently and respect our commitments, thereby ensuring the trust of our customers and partners.

  • Bold innovation

    We are constantly pushing back the boundaries of technology and creativity. We don't hesitate to explore new ideas and take calculated risks to deliver cutting-edge solutions that exceed expectations.

  • Excellence

    We strive to exceed quality standards in everything we do. The pursuit of excellence guides our decisions and drives us to continually improve our processes and results.

  • Wisdom

    We value experience and discernment. By learning from the past and anticipating future challenges, we make informed decisions that promote sustainable, responsible growth.

  • All in good fun

    We believe that having fun at work is essential for motivation and creativity. By cultivating a pleasant and inspiring work environment, we foster individual fulfillment and collective success.

Where you'd work

Four offices. One delivery org

Laval (Kolostat HQ), Montréal (our Energy division — decarbonization), Toronto, and Newmarket. Career mobility flows freely across the four offices.

  • Head Office

    Laval, Quebec

    2005, rue Le Chatelier
    Laval, QC H7L 5B3

  • Energy Department

    Montréal, Quebec

    276, rue Saint-Jacques, Suite 805
    Montréal, QC H2Y 1N3

  • Toronto Office

    Toronto, Ontario

    151 Bloor Street W, 5th Floor
    Toronto, ON M5S 1S4

  • Newmarket Office

    Newmarket, Ontario

    1200 Stellar Drive
    Newmarket, ON L3Y 7B9

Spontaneous application

Cleantech is the work

If you'd like to be part of a team whose mission is to make a positive difference on the planet — and who treats customer satisfaction and employee well-being as the same problem — we want to hear from you. Spontaneous applications flow through our live ATS.

Submit a spontaneous application

Employment equity Our company is committed to the principles of equality in employment, and therefore invites applications from women, Aboriginal people, members of visible minorities and people with disabilities.

Your next career opportunity awaits

Your next career opportunity awaits

Engineering, energy, controls, project management, and field service openings across Quebec and Ontario. The live job board is on careers.kolostat.com.

See open roles Call 514-333-7333