Senior Mechanical Engineer

EXP; Barrie; On-site; CAD 109,000 - 140,000; Full time

Job summary

EXP is seeking a Senior Mechanical Engineer to lead the design of municipal and industrial water and wastewater facilities in Sudbury or Barrie, Ontario. You will oversee mechanical design, equipment selection, and project delivery while coordinating with civil, electrical, and process teams.

Ideal candidates have a P.Eng. in Ontario or eligibility, 10+ years of relevant experience, and a track record delivering complex infrastructure projects with strong client communication.

Qualifications

• Lead the mechanical design of water and wastewater facilities and related infrastructure.
• Experience delivering detailed drawings, specs and contract documents.
• Strong communication, writing and client-facing skills.
• Willingness to travel within Ontario as required.

Responsibilities

• Lead the mechanical design of water and wastewater treatment facilities, pumping stations, and related infrastructure.
• Prepare calculations, specifications, reports, drawings, and contract documents.
• Design mechanical process equipment: pumps, blowers, HVAC, piping, dewatering.
• Coordinate with multidisciplinary teams and manage project budgets and schedules.
• Provide technical leadership and mentorship to junior engineers.
• Review drawings, RFIs, and support during construction.

Skills

Mechanical design

Water & wastewater

Project leadership

Client liaison

Mentorship

Education

Bachelor's degree in Mechanical Engineering

P.Eng. Ontario or eligible

10+ years of related experience

Tools

AutoCAD

Revit

Plant 3D

BIM platforms

Hydraulic modeling software

Job description

Sudbury or Barrie Ontario. At EXP, we’re driven to provide innovative solutions for the world’s built and natural environments. As a team of engineers, architects, designers, scientists, creators and a community of professionals, we bring diverse and talented people together to solve the world’s most complex challenges. Here, you join a team that leverages differences, harnesses their entrepreneurial spirit in an employee-owned company, that believes diversity is what gives us strength, seeks sustainable results and shares ambitions for each other, our clients and the communities we are part of and serve. To be a part of EXP means to have your own experience, while staying connected to a global network of professionals, who believe we are a part of something bigger. Together, we are EXP.

Job Description

Sudbury or Barrie Ontario. At EXP, we’re driven to provide innovative solutions for the world’s built and natural environments. As a team of engineers, architects, designers, scientists, creators and a community of professionals, we bring diverse and talented people together to solve the world’s most complex challenges. Here, you join a team that leverages differences, harnesses their entrepreneurial spirit in an employee-owned company, that believes diversity is what gives us strength, seeks sustainable results and shares ambitions for each other, our clients and the communities we are part of and serve. To be a part of EXP means to have your own experience, while staying connected to a global network of professionals, who believe we are a part of something bigger. Together, we are EXP.

Are you ready to design your future?

Be our next Senior Mechanical Engineer!

Your work environment at EXP

We are seeking a Senior Mechanical Engineer to join our growing Water & Wastewater team in Sudbury or Barrie Ontario. In this role, you will lead the planning, design, and delivery of municipal and industrial water and wastewater treatment facilities, pumping stations, and related infrastructure projects. You will work closely with multidisciplinary teams, clients, contractors, and regulatory agencies to develop innovative and sustainable engineering solutions that improve communities across Ontario.

This is an excellent opportunity for an experienced engineer who is passionate about complex infrastructure projects and enjoys balancing technical excellence, project leadership, and client relationship management.

What a day at EXP has in store for you

• Lead the mechanical design of water and wastewater treatment facilities, pumping stations, reservoir systems, and related infrastructure projects.
• Prepare and oversee engineering calculations, technical specifications, reports, drawings, and contract documents.
• Design and specify mechanical process equipment, including:
• Pumps and pumping systems
• Blowers and aeration systems
• Chemical feed systems
• Odour control systems
• HVAC systems for treatment facilities
• Sludge handling and dewatering equipment
• Piping and process mechanical systems
• Conduct condition assessments, feasibility studies, master planning, and lifecycle evaluations of existing facilities.
• Provide technical leadership and mentorship to junior and intermediate engineers and designers.
• Coordinate with civil, structural, electrical, process, instrumentation, and automation disciplines.
• Manage project budgets, schedules, deliverables, and quality control requirements.
• Participate in client meetings, presentations, and business development initiatives.
• Review shop drawings, respond to RFIs, and provide engineering support during construction.
• Ensure designs comply with applicable Ontario regulations, industry standards, and municipal requirements.

Required

What your experience looks like

• Bachelor’s degree in Mechanical Engineering from an accredited university.
• Professional Engineer (P.Eng.) designation in Ontario or eligibility for registration.
• 10+ years of related experience in water and wastewater treatment facility design.
• Strong understanding of municipal infrastructure projects and treatment processes.
• Experience preparing detailed design drawings, specifications, and contract documents.
• Knowledge of Ontario regulations, MECP requirements, and relevant industry standards.
• Experience working through all phases of project delivery, including planning, design, procurement, construction, and commissioning.
• Excellent communication, technical writing, and client-facing skills.
• Valid driver’s license and willingness to travel within Ontario as required.

Preferred

• Experience managing multidisciplinary engineering projects.
• Familiarity with alternative project delivery methods, including Design-Build and Progressive Design-Build.
• Construction administration and commissioning experience.
• Project Management Professional (PMP) designation is considered an asset.
• Experience with industrial water treatment or process mechanical systems.

Technical Skills

• Mechanical design of water and wastewater treatment processes and facilities.
• Pumping system hydraulics and equipment selection.
• Process piping design and equipment layouts.
• HVAC and building services for industrial and municipal facilities.
• Equipment procurement and technical specification development.
• Construction support and commissioning services.
• Proficiency with engineering software and design tools such as AutoCAD, Revit, Plant 3D, BIM platforms, and hydraulic modeling software.

This job posting is for an existing position vacancy within our organization.

The salary range for this role is between $109- 140K. The actual compensation packages are based on several factors that are unique to each candidate, including but not limited to skill set, depth of experience, certifications, and specific work location.

EXP subscribes to the Workplace Equity Program. Applications from women, members of visible minorities, Indigenous peoples and persons with disabilities are encouraged. Persons with disabilities can obtain accommodation for the selection process by contacting us at the following email address: [e-mail].

About Us

Our story

With a mission to understand, innovate, partner and deliver, EXP provides engineering, architecture, design and consulting services to the world’s built and natural environments.

Our heritage dates back to 1906, when the earliest of EXP’s predecessor companies started its engineering infrastructure practice. Today, thousands of creative professionals across EXP work together to deliver extraordinary experiences year after year.

What Makes Us Different

The passion, enthusiasm, diversity and industry-leading capabilities of our employees make us who we are. We’re committed to providing a challenging work environment that cultivates career growth, encourages creativity and rewards excellence.