Open to opportunities

Dorothy Mahon

@dorothymahon

Project Development Leader at Imperial advancing capital portfolios across Sarnia and Nanticoke refineries, including an Eastern Canada portfolio exceeding $200M.

Canada

Message

At Imperial, I lead project development strategy and portfolio activities supporting capital investments across the Sarnia and Nanticoke refineries, within an Eastern Canada portfolio exceeding $200M. I support stage-gate decisions, capital planning, and investment recommendations while aligning project resources with business priorities.

At CF Industries, I completed FEED and detailed design as Lead Process Engineer / Project Engineer for the $100M Urea Enhancement Project, the site's largest capital project at the time. Earlier, at WorleyParsons, I prepared process deliverables for pipeline, gas processing, and facility upgrade projects, including support for Enbridge Line 9 Reversal.

Experience

Work history, roles, and key accomplishments

Current

Project Development Leader

Current

Imperial

Jun 2025 - Present (1 year 4 months)

Lead project development strategy and portfolio activities for Sarnia and Nanticoke refineries, managing a portfolio exceeding $200M. Provide functional leadership to 15 globally distributed project managers and drive brownfield project organization strategies.

Project Development Portfolio Management Phase Gate Governance Brownfield Development Capital Planning Stakeholder Management IPA Benchmarking

Regional Project Manager of Development

Imperial

Jan 2019 - Jun 2025 (6 years 5 months)

Supported project development and capital project activities across Imperial's Sarnia, Nanticoke, and Strathcona operations. Led project development from scope definition through gate reviews and business-case development.

Project Development Capital Projects Business Case Development Cost Estimation Scheduling Risk Assessment Stakeholder Engagement EPC Management

Project Manager / Project Engineer / Process Engineer

CF Industries

Jan 2013 - Dec 2019 (6 years 11 months)

Coordinated projects from kickoff through FEED, detailed engineering, execution, and closeout. Completed FEED and detailed design for the $100M Urea Enhancement Project and managed process improvement projects valued at $500K–$2M.

Project Management FEED Engineering design Process Engineering PHA P&ID And Schematics Review MOC (Management Of Change)PSSR Commissioning Root Cause Analysis Urea Production Nitric Acid Production

Process Engineer

WorleyParsons

Jan 2010 - Dec 2013 (3 years 11 months)

Prepared process deliverables for pipeline, gas processing, and facility upgrade projects. Served as Lead Process Engineer for BP Alaska pressure safety valve validation and supported Enbridge Line 9 Reversal.

Process Engineering PFD P&ID Hydraulics Control Valve Sizing Relief Valve Sizing Calculations API Concepts And Standards Hazop Aspen HYSYS

Junior Process Designer

Precision BioLogic

Jan 2009 - Dec 2010 (1 year 11 months)

Mapped, monitored, and optimized manufacturing processes through sampling and analysis. Applied statistical process control and Six Sigma methods to improve yield and product stability.

Process Optimization Statistical Process Control Six Sigma Manufacturing Sampling Analysis