Principal Engineer- Tunnel Practice (Canada)

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AECOM is actively seeking a Principal Engineer- Tunnel Practice for immediate employment in Markham, Ontario or Mississauga, Ontario, Canada. 

The responsibilities of this position include, but are not limited to:

• This role will function as a Deputy Design Manager, supporting the Design Manager in the planning, coordination, and delivery of multidisciplinary design packages for a deep sanitary sewer tunnel system within a dense urban corridor.

• The position is suited to a technically strong engineer with proven experience in design delivery, coordination, and risk management for major municipal infrastructure programs.

• Familiarity with water and wastewater design standards in the Region of Peel, City of Toronto, York Region, and Halton Region is considered an asset.

• Coordinate multidisciplinary design inputs, including tunnelling, geotechnical, hydrogeological, structural, civil, utilities, hydraulic, traffic, environmental, procurement, cost, and schedule disciplines.

• Lead and independently organize work plans, design tasks, and deliverables for medium- to high-complexity tunneling and underground projects.

• Provide expert guidance in soil mechanics, rock mechanics, and ground–structure interaction to multidisciplinary project teams.

• Contribute geotechnical and structural expertise for underground components on major water conveyance projects, including long microtunnels drives and deep shafts.

• Provide technical input for tunnel and shafts design methodologies, means and methods, and proposal development.

• Design tunnels using MTBM and SEM/NATM.

• Design SOE systems for deep shafts, pump stations, portals, cut-and-cover structures, and deep excavations.

• Participate in constructability reviews, value engineering workshops, and risk management activities.

• Prepare contract documents, design reports, technical specifications, and drawing packages.

• Review and supervise the work of intermediate engineers and mentor interns, especially on numerical modelling tasks.

• Collaborate closely with internal disciplines, external partners, and clients to support successful project delivery.

• Contribute to the development and continuous improvement of AECOM’s tunneling standards, tools, and best practices.

Minimum Requirements

• BA/BS + 6 years or more of relevant experience or demonstrated equivalency of experience and/or education.

• Hold a P.Eng. in ON or have the ability to obtain it within one year from starting of employment.

Preferred Qualifications

• 6+ years of experience in tunnels and microtunnels design, deep shafts, underground structures, and geotechnical/structural analysis for major infrastructure programs (highly preferred).

• 6 years of experience with design management of water conveyance tunneling projects.

• Strong technical capabilities in underground design and numerical analysis.

• Master’s Degree in Geotechnical or Structural Engineering.

• Experience with design management of water conveyance projects.

• Experience with both large-diameter (5m+) tunneling and trenchless technologies.

• Technical expertise in TBM tunneling, SEM/NATM, shaft design, ground improvement, and deep excavation support systems.

• Strong knowledge of geology, hydrogeology, rock mechanics, and ground behavior.

• Proficiency in analytical and numerical methods for underground works, including 2D/3D modelling.

• Ability to work independently and make informed technical decisions with minimal supervision.

• Excellent written and verbal communication skills, including the ability to present technical concepts clearly.

• Strong teamwork, coordination, and client-facing skills.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines. Artificial intelligence will be used to support the screening, assessment, and selection of applicants for this role. Final hiring decisions are made by the hiring team.