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    • Julie Pepper smiles while speaking with a colleague in front of a Callidus Engineering wall.

      September, 2026

      Congratulations, Julie, on Your CEM® Designation!

      Mechanical Engineer Julie Pepper, P.Eng., recently earned her Certified Energy Manager (CEM®) designation. In her words:[…]

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    • April, 2026

      Administrative Professionals Day 2026

      We Make Buildings Work. The work behind that is only possible because of the people who keep everything moving. On this Administrative Professionals Day[…]

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    • April, 2026

      Congratulations Gustavo!

      Achieving a Professional Engineering licence is a meaningful milestone, and a reflection of the time, discipline, and accountability that defines the profession. This month, Gustavo Pereira reached that milestone and is[…]

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    • Rectangular cake celebrating Callidus Engineering’s 20th anniversary, with the company logo printed on white icing and red, white, and grey rosette frosting around the edges.

      January, 2025

      Callidus Engineering Turns 20

      2025 is a year of celebration for us at Callidus Engineering—our 20th anniversary! From 2005 to 2025, we’ve experienced two decades of engineering excellence, countless projects brought to life, and […]

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    • Callidus KW - Lunch room

      August, 2022

      Introducing Callidus K-W

      Callidus Engineering is pleased to announce the opening of our third office location.  Our newest office, located in Kitchener, Ontario, is positioned to better support our existing client base in […]

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    • December, 2019

      Callidus: 2019

      2019 has been a year of growth for Callidus.  Both our London and Kingston offices have experienced growth in Staff numbers, with 7 new employees joining the Callidus family.  This […]

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    • March, 2019

      Homes on Homes on Homes…

      If you live in an urban location, it is likely that you have seen an increase in the multi-unit residential developments being built in your town or city. With population […]

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    • December, 2018

      Callidus 2018 – Year In Review

      What a great year it has been!   This has been one of our most memorable years at Callidus, and we wanted to take a moment to share that with you! This […]

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    • September, 2018

      Callidus Update – Quarter 3, 2018

      Happy Birthday Callidus Kingston! We have had a great first year in Kingston, and to celebrate, we got ourselves a new office. With the addition of 3 new staff members […]

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    • June, 2018

      Callidus Update – Quarter 2, 2018

      As we near the midway point of 2018, it is easy to celebrate the success of the first 6 months for Callidus.  We have had the chance to work on […]

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    Callidus Engineering
    Callidus Engineering

    There's a lot to celebrate when an existing building finds a new purpose, especially when that purpose makes a meaningful difference in people's lives!Last month, Kingston's 315 Queen Mary Road celebrated its grand opening, marking the transformation of a former long-term care home into a shared-care facility bringing transitional housing, health care and community support together under one roof.The facility includes 33 transitional housing units operated by Home Base Housing, offering older adults who have experienced homelessness a place to find stability and support while working towards permanent housing. It's also home to the Midtown Kingston Health Home, operated by Kingston Community Health Centres, providing access to primary care for residents and the wider community.Our team provided mechanical and electrical engineering for the renovation, tackling the challenges of adapting an aging building to meet the different operational needs and safety requirements of residential and clinical spaces.Our own Derek Reid joined the grand opening celebrations alongside the City of Kingston, project partners and local service providers. By the time of the celebration, the transitional housing program had already welcomed 26 people, a wonderful reminder of the real impact behind the work.It's rewarding to see an existing building begin such an important new chapter, and we're grateful to have played a part in bringing these much-needed services to our Kingston community!#EngineeringExcellence #YGK #OntarioConstruction ...

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    Callidus Engineering
    Callidus Engineering

    Last week, our teams from London, Kitchener-Waterloo, and Kingston traded their usual routines for a full day together in downtown Toronto.We kicked things off with a Conundrum Outdoor Adventure that sent teams across the city to tackle a series of challenges, with new tasks appearing throughout the afternoon. It was a great excuse to mix up the usual groups, work with people we may not see every day, and have some fun along the way.After all that time outside the team moved over to Toronto's BATL Grounds with axe throwing, archery, good food, and plenty more time to catch up. Later, we had an all hands presentation centred on one of our core values, We Pursue Better. Canadian Olympian and 11-time national boxing champion Mandy Bujold joined us as our guest speaker, sharing her perspective on perseverance, growth, and continuing to push for better.With our team spread across three offices, getting this many people together in one place does not happen often. That made the day feel especially worthwhile, and gave everyone a chance to reconnect outside the usual calls, deadlines, and project work.#EngineeringExcellence #LDNOnt #YGK #KWAwesome ...

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    Callidus Engineering
    Callidus Engineering

    A new incoming water main, heavy-duty trench drainage, a new addressable fire alarm system and expanded emergency power are all taking shape at Hayter’s Farm in Dashwood. Earlier this month, our team was back on site as Phase 2 of construction continued. Our work also includes the building-side engineering that supports process systems, coordinating water, power, gas and other MEP requirements alongside plumbing, HVAC, fire protection and electrical design. For more than 75 years, Hayter’s Farm has been part of the Dashwood community, today employing more than 150 people and supporting local health care, youth organizations and food banks. We’re proud to help create the infrastructure for their continued growth right here in Southwestern Ontario. #EngineeringExcellence #OntarioConstruction #IndustrialEngineering ...

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    Callidus Engineering
    Callidus Engineering

    With the amount of school-related work we get to be part of, back-to-school season feels like a year-round event around here. Our latest visit to St. Peter Catholic Elementary School in Tecumseh was a good reminder of why we enjoy this kind of work.The school’s mechanical renewal is now visibly taking shape, with new boilers operational and major rooftop and domestic hot water equipment in place. Behind that progress is the less-visible challenge of fitting new systems into an existing building, working around the infrastructure already there and making sure the new mechanical equipment has the electrical support it needs.We do a lot of this kind of work for school boards across Ontario, and that experience adds up. Every building comes with its own quirks, constraints and history, which is exactly what makes renewal work interesting. It is always satisfying to see a design move off the page and start becoming part of the school itself.#EngineeringExcellence #OntarioSchools #OntarioConstruction ...

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    Our London location1385 N. ROUTLEDGE PARK UNIT 9 LONDON, ON N6H 5N5 519-472-7640

    info@callidus.ca

    Our KINGSTON location4 CATARAQUI ST. UNIT 100 KINGSTON, ON K7M 1Z6

    613-900-0845

    Our KITCHENER location210-137 GLASGOW ST. KITCHENER, ON N2G 4X8

    519-340-1885