Senior Mechanical Engineer

We are the Callidus Engineering team. We make buildings work!

We offer a diverse, flexible workplace where you have a career, not just a job.

You’ve built your career solving complex mechanical challenges, delivering high-quality designs, and ensuring projects meet the highest standards in critical environments like healthcare. You deserve a role where your expertise is respected, your input makes a difference, and your projects support environments that truly matter.

At Callidus Engineering, you’ll work on a wide range of healthcare facilities—from diagnostic imaging suites and labs in hospitals to long-term care homes and medical clinics—you will be helping make a difference in health of people in your community and country.

If you have 10+ years of experience in Building Services, particularly in the healthcare sector, this is your opportunity to take the next step in your career. We’re hiring for this position across all three of our offices: London, Kitchener, and Kingston.

At Callidus Engineering, your contributions matter. Your insight shapes both our designs and the patient environments they serve. You’ll be part of a team that values community, ambition, and integrity, where professional growth is supported, and technical excellence is the standard.

What You Can Expect

• Competitive wages that recognize your expertise
• A strong benefits package to support you and your family
• Incentive compensation tied to company performance

Learn more about what it’s like to work with us: https://callidus.ca/work-at-callidus/

Your Role Includes

• Reviewing and stamping mechanical projects of all complexities and sizes
• Directing design strategies and concepts on complex projects
• Leading audits, feasibility assessments, and investigations, and writing corresponding reports
• Conducting site visits, reviews, and construction phase services
• Supporting the continuous development of mechanical design standards and practices
• Mentoring intermediate and junior-level engineers and designers

What You Bring to the Team

• Design experience with central plant systems, including hot water, steam, and chilled water systems
• Significant exposure to DDC control systems, including writing sequences of operations, specifications, and troubleshooting on-site control issues
• Extensive knowledge of codes and standards including CSA Z317 for healthcare
• Design experience across multiple industries which may include commercial, industrial, educational, multi-unit residential, healthcare, or government
• Excellent communication skills and the ability to organize, multitask and work well under deadlines
• A collaborative mindset and a willingness to share ideas with a track record of sound judgement and decision-making
• Professional engineering license in Ontario with 10+ years of design experience in the building construction industry and at least 5 years in Canada