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Salary
$70k – $105k per year
Location
In office (Oakville)
Seniority
Senior · 8+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 26, 2026. First seen by Alion on May 15, 2026. Parsons scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Parsons Corporation is a technology-driven defense, intelligence, and critical infrastructure engineering enterprise. The company focuses on delivering advanced cybersecurity, missile defense and space ground systems, geospatial intelligence, environmental remediation, and complex civil infrastructure engineering for transportation, aviation, bridges, and water systems.
In a world of possibilities, pursue one with endless opportunities. Imagine Next!At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.

Job Description:

Parsons is looking to hire a full-time dedicated Senior Mechanical Engineer to lead Infrastructure projects engineering work. The Senior Mechanical Engineer is broadly responsible for establishing system requirements, performing functional analyses, and preparing engineering calculations, technical specifications, data sheets, and reports while mentoring and leading junior engineers to meet our clients’ needs. Senior Mechanical Engineers are also responsible for providing regular input into the progressive elaboration of 3D models and 2D drawings to achieve technically coherent and compliant designs for our clients. This role would be based out of our Oakville, Ontario office.

Key Responsibilities

Depending on the role in the project, responsibilities may include and are not limited to:

  • Demonstrate a range of technical capabilities with experience in Mechanical Engineering and design, and development of contract documents (design reports, analysis reports, calculations, plans, specifications, etc.).
  • Lead or assist in the definition of mechanical project scope
  • Lead mechanical engineering teams to ensure delivery of project requirements as they relate to scope, cost, and schedule
  • Establish user requirements, analyze system functional and performance requirements, and define design criteria
  • Develop appropriate mechanical HVAC, plumbing, and fire protection design schemes.
  • Prepare and interpret engineering calculations including heat load calculations, and hydraulic modeling/calculations, and perform system analyses
  • Prepare equipment sizing while ensuring that all analyses satisfy user and system requirements
  • Provide input to other disciplines within the project design team on mechanical requirements for layouts and project designs
  • Conduct interface management between related systems and disciplines.
  • Prepare technical specifications including input received from other project disciplines
  • Manage and review engineering work packages associated with project deliverables including management of project budgets and schedule.
  • Prepare, review, or approve technical deliverables such as equipment specifications, data sheets, calculations, etc.
  • Prepare and contribute to technical memos and reports
  • Provide input to engineering, operating, and capital cost estimates
  • Prepare or provide input to 3D models and 2D mechanical drawings
  • Participate in and contribute to design reviews
  • Assist in the compilation and delivery of monthly engineering status reports
  • Assist with technical queries raised during the construction phase
  • Assist in the commissioning of systems on site as required
  • Guide more junior engineers and drafters

Qualifications And Experience

  • B.Sc./B.Eng. in mechanical engineering
  • Registration as a professional engineer in Ontario (PEO)
  • Minimum 8 years of project engineering/design experience in buildings HVAC, Plumbing and Drainage, and Fire Protection
  • Experience in LRT, Metro, or Railway /transit design projects (or any other Infrastructure projects)
  • Experience in leading small and large mechanical teams in multi-disciplinary projects.
  • Excellent interpersonal, presentation, and communication skills.
  • Excellent organizational, planning, time management, and problem-solving skills
  • Ability to meet targets with minimal supervision
  • Knowledgeable in the use of specialized engineering software such as Carrier HAP, AFT Fathom, eQUEST, etc.
  • Working knowledge of industry standards (NFPA, ASHRAE), regulations, and codes (OBC, NBC) pertinent to the infrastructure mechanical engineering discipline
  • Sound knowledge of engineering management systems, deliverable progress measurement
  • Experience with greenfield and brownfield interfaces, including constructability experience
  • Willingness to learn, develop and apply new techniques, standards, and processes
  • Ability to delegate tasks and effectively supervise engineers and designers.
This position is part of our Critical Infrastructure team.For more than 80 years, our experts have designed and delivered the critical infrastructure that connects and protects communities around the world. We work in collaborative teams, both within the company and with our partners and customers, to plan, design, build, and modernize infrastructure. We take special pride in projects and solutions that improve communities as well as people’s quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency. Powered by our people, we provide the imagination necessary to support our customers’ visions-and to help them see what's next!Salary Range: $97,600 - $147,600This position is intended to identify candidates for future potential opportunities and is not for an existing opportunity.We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as health, vision, dental, employer paid provincial care premiums, Defined Contribution Pension Plan (DCPP), Tax-Free Savings Account (TFSA), Registered Retirement Savings Plan (RRSP), life insurance, paid time off, sick leave, all province observed holidays off, and gym membership discounts to fit your busy lifestyle!Parsons is an equal opportunity employer committed to diversity, equity, inclusion, and accessibility in the workplace. Parsons equally employs representation at all job levels for indigenous peoples, women, individuals with disabilities, and visible minorities.We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest-APPLY TODAY!

Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer to https://www.parsons.com/fraudulent-recruitment/.

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