Trans Mountain Corporation operates Canada’s only pipeline system transporting oil products to the West Coast. We deliver approximately 890,000 barrels of petroleum products each day through a dual pipeline system of more than 1,150 kilometres of pipeline in Alberta, British Columbia and Washington state.

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Mountain also operates a state-of-the-art loading facility, Westridge Marine Terminal, with three berths providing tidewater access to global markets. As a federal Crown corporation, Trans Mountain continues to build on more than 70 years of experience delivering operational and safety excellence through our crude oil pipeline system. With our expanded pipeline system now in place, Trans Mountain provides enhanced direct access for Canadian crude oil to world markets.

The expansion realizes a world-class system for oil transport, developed to Canada’s high standards within one of the most stringent regulatory regimes in the world, creating long-term economic benefits, enhanced marine protection, enhanced safety and emergency management capabilities, and enhanced skilled-worker capacity building in communities and Indigenous groups. Each obstacle we’ve overcome or success we’ve experienced has been the result of a shared commitment to living these values every day. Together, we’re focused on doing the right thing for each other and our communities.

Calgary Head Office Major Projects Office

Contractor Full-time In Office Trans Mountain is seeking a collaborative, motivated, and values driven individual to join our energetic team as a Senior Estimator/Cost Engineer, Sustaining Capital. In this position, you will play a key role in supporting the development of multiple classes of estimates for ongoing projects.



This role will work closely with project teams to deliver accurate and reliable cost estimates under tight timelines, leveraging available benchmarking data and integrating industry best practices to enhance accuracy and consistency.

The successful candidate will demonstrate strong estimating expertise, solid project‑controls knowledge, and the ability to collaborate effectively in a quick‑paced environment. Prepare estimate preparation plans and develop various classes of estimates (Class 5 through Class 3) for active projects.

Collaborate with project managers and teams to validate scope and ensure estimates align with project objectives, and maturity of engineering deliverables.

Provide timely and accurate cost data to support decision‑making and project planning.

Post‑secondary education in Engineering, Project Management, Business Administration, or a related field.

8+ years of related estimating and/or cost engineering experience in pipeline infrastructure and energy related facilities.

Experience developing and maintaining estimates throughout project development and execution phases, including estimate validation, benchmarking, forecasting, and cost performance analysis.

Strong knowledge of project control processes, including estimating, cost management, planning and scheduling, risk, and change management.

Proficiency in estimating software and tools, including the development of cost models and estimate workbooks.





Strong familiarity with Stage Gate Project Delivery Model best practices.

Strong knowledge of AACE estimate classifications and estimating techniques.

Thrives under pressure, adept at managing strict deadlines and shifting priorities.

Critical focus on accuracy and detail and works efficiently in a high‑paced, agile, dynamic and multi‑task environment.

A track record of delivering high‑quality work, managing competing priorities, and supporting key business processes or operational functions.

Willingness and ability to travel as required (5-10%) to various site locations.

May need to provide support outside of regular business hours and/or on the weekend.

We Build

Careers and Pipelines That Last

We welcome recent members to our team that embrace the qualities in our story, that thrive on the new path and directions we take. Our culture is one of care and taking our responsibilities seriously. Meaningful participation from Indigenous and local communities;

In keeping with Trans Mountain’s commitment to maximize benefits for communities, priority will be given to qualified candidates from Indigenous, local and regional communities along the Trans Mountain pipeline corridor. In Alberta, the pipeline system spans the traditional territories of Treaty 6, 7 and 8, and the Métis Nation of Alberta (Zone 4). Our Commitment to Inclusion, Diversity, Equity and Accessibility (IDEA)

Trans Mountain is committed to fostering inclusion, diversity, equity and accessibility.

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Mountain welcomes new team members from traditionally underrepresented groups, including but not limited to women, Indigenous Peoples, members of racialized groups, persons with disabilities and members of the 2SLGBTQI+ community. #

📌 Senior Estimator/Cost Engineer, Sustaining Capital (Contract) (Calgary)
🏢 Trans Mountain
📍 Calgary