Senior Site Engineer, Tunnel Practice

AECOM is seeking two Senior Site Engineers (Civil Engineering IV) for our Tunnel Practice in Mississauga ON or Markham ON or to lead on-site construction for underground works across TBM and SEM/NATM tunnels and support of excavation ensuring safe compliant and efficient delivery aligned with approved drawings specifications method statements and ITPs. This is a newly created position. 

Responsibilities:

• In this role you will coordinate day-to-day field engineering; manage RFIs and site clarifications from drafting to closeout.
•  Review temporary works set-outs sequencing and hold/witness points; and maintain daily logs photo records and concise progress reports.
• You will verify TBM launch/arrival readiness monitor operational parameters and oversee segment installation quality and interventions; manage SEM headings and sequencing shotcrete application and testing lattice girders/steel ribs and temporary lining with excavation class validation.
• You will inspect and control SOE systems (diaphragm/slurry walls secant/soldier piles and lagging sheet piles struts/bracing ground anchors) dewatering/groundwater management and utilities protection ensuring proper sequencing preloading/lock-off and as-built traceability.
• You will implement and track instrumentation and monitoring (settlement points prisms inclinometers piezometers extensometers load cells) interpret trends against trigger/action thresholds and initiate timely mitigations and design check-backs.
• Enforce QA/QC (material approvals inspections NCRs/SNs to closure) uphold safety and environmental controls (permits-to-work JSAs/THAs confined space/LOTO noise/vibration/dust management) and coordinate proactively with geotechnical structural MEP utilities survey contractor designer and client teams to resolve constraints and protect schedule and quality.

Qualifications :

Minimum Requirements:

• BS  6 years of relevant experience or demonstrated experience as site engineer or equivalent.

Preferred Qualifications:

• MS in Civil or Geotechnical Engineering highly preferred.
• We value strong communication and documentation skills; proficiency with construction documents and common CDE/field tools.
• 6 years of heavy civil/underground experience with TBM and/or SEM/NATM.
• Familiarity with monitoring data interpretation and change support (RFIs claims inputs time-impact analyses).
• Flexibility to work in active tunnel and shaft environments.

Additional Information :

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 . 

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 youll 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 youve always envisioned. Here youll 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.

Remote Work :

No

Employment Type :

Full-time