Senior Estimator

Senior Estimator  - Calgary AB. - Full Time - ID# 6639

We are seeking a Senior Estimator - Power Generation, Energy, Mining, Nuclear, and Infrastructure to support our growing team in Calgary, AB. In this role, you’ll play a key part in driving project excellence, collaborating with industry leaders, and ensuring high-quality outcomes across complex initiatives.

The Opportunity
Join PTAG, a leading Project Management Advisory & Services firm, recognized across North America for helping world-class clients deliver major capital projects successfully.
The Senior Estimator is responsible for leading the preparation, coordination, and delivery of high-quality cost estimates for major capital projects across PTAG’s portfolio. Reporting to the Director, Project Services, this role plays a key part in supporting project planning, execution, and control by providing accurate, timely, and data-driven cost estimates.
The Senior Estimator works closely with all interfaces including engineering, procurement, and construction teams to ensure that project estimates reflect current market conditions, sound methodologies, and organizational standards. The ideal candidate is detail-oriented, technically strong, and a proactive collaborator who can support multiple projects while mentoring junior estimators.

About PTAG
At PTAG, we help our clients plan, manage, and execute their most challenging projects with innovation, integrity, and collaboration.
Our mission is to help our clients achieve successful delivery and efficient operation of their capital projects.
Our vision is to support global leaders in the selection, planning, and execution of their major initiatives.
Our values include:

• Safety: The safety of our employees, suppliers, and clients is always the top priority.
• Collaboration: We build true partnerships with clients and service providers.
• Leadership: We elevate project performance through the application of best practices.
• Accountability: We take responsibility for every aspect of our engagements.
• Client Satisfaction: We strive for 100% satisfaction on every project.
• Integrity: We believe in open and transparent communication at all levels.

Role & Responsibilities
In this role, you will:
Lead Estimate Development

• Develop, coordinate, and deliver comprehensive cost estimates for all project phases - from conceptual and feasibility studies through detailed engineering, procurement, and construction (EPC) execution.

Estimate Review & Validation

• Perform detailed quantity take-offs, vendor pricing reviews, and subcontractor evaluations to ensure accuracy and completeness of estimates. Validate cost assumptions and methodologies using current data, historical benchmarks, and lessons learned.

Support Project Planning & Decision-Making

• Work with project managers and engineers to develop cost models, evaluate design alternatives, and identify cost-saving opportunities. Contribute to cost-risk assessments and contingency planning.

Mentorship & Team Development

• Provide technical guidance and day-to-day support to junior estimators. Review and coach team members’ estimates to ensure compliance with PTAG’s standards and accuracy expectations.

Estimate Standards & Best Practices

• Apply and uphold PTAG’s estimating standards, templates, and procedures. Recommend improvements to enhance estimating quality and consistency across projects.

Benchmarking & Data Management

• Leverage internal cost data and industry benchmarks to validate estimates and improve forecasting accuracy. Contribute to the maintenance and development of PTAG’s cost database and historical records.

Collaboration & Change Management

• Work closely with engineering, procurement, and construction teams to evaluate design modifications, change orders, and value engineering options. Ensure all estimate updates and revisions are well documented and justified.

Tools & Systems Proficiency

• Use and maintain estimating software tools such as Cleopatra, EcoSys, or equivalent systems. Support integration with project management and cost control tools to improve workflow and data transparency.

Continuous Improvement

• Participate in initiatives to improve estimating methodologies, tools, and processes. Support the implementation of digital estimating solutions and automation initiatives.

Qualifications / Requirements
To succeed in this role, you bring:

• 8-12+ years of experience in cost estimating for Power Generation, Energy, Mining, Nuclear, or Infrastructure projects.
• Bachelor’s degree in engineering, Construction Management, Quantity Surveying, or a related discipline.
• Solid understanding of EPC project delivery, estimating methodologies, and cost drivers
• Demonstrated experience with Cleopatra, EcoSys, or equivalent estimating tools.
• Working knowledge of AACE International Classifications and Recommended Practices.
• Strong analytical skills with experience in cost modeling, benchmarking, and sensitivity analysis.
• Proven ability to manage multiple estimates and priorities within tight deadlines.
• Excellent written and verbal communication skills with strong stakeholder collaboration experience.
• Experience integrating estimating activities with cost control, scheduling, and project management systems (e.g., Primavera, SAP).
• Professional Engineer (P.Eng) or Certified Estimating Professional (CEP) designation considered an asset.
• Demonstrated ability to mentor junior estimators and contribute to team capability development.

Salary Range for Role $ 125,000 - $130,000
Compensation at PTAG varies depending on a wide array of factors, which may include but are not limited to the specific office location, role, skill set and level of experience.

Why Join PTAG?
At PTAG, you’ll be part of a dynamic, growing consulting firm that values professional development, collaboration, and innovation.
Opportunity to work on major infrastructure and capital projects.

• Exposure to industry-leading clients and partners.
• Competitive compensation and comprehensive benefits package.
• Flexible work environment and opportunities for advancement.
• Employee Share Purchase Plan (ESPP).
• A culture that values safety, accountability, and excellence.

PTAG is proud to be an equal opportunity employer committed to fostering a diverse and inclusive workplace.


PTAG uses AI-enabled tools to support certain aspects of the recruitment process, including reviewing applications against job-related criteria. These tools are used to assist our recruiters. All hiring decisions are made by PTAG recruiters and hiring managers.