Mairyn McFall
Philadelphia,PA
Summary
A passionate and driven young professional in nuclear energy and supply chain management with a strong interest in the clean energy transition and the economic forces shaping global climate outcomes. Driven by a desire to create a positive, operational level impact, I bring experience supporting complex, high-stakes energy operations and a clear understanding of how supply chain decisions influence environmental and economic sustainability. Seeking to further my education through interdisciplinary study at the intersection of energy, economics, and climate policy.
Overview
2
2
years of professional experience
Work History
Associate Procurement Specialist - Nuclear Ops
Constellation Energy
Kennett Square, PA
09.2025 - Current
- Support 13 nuclear generating sites in outage preparation and execution by ensuring critical materials arrive on time, preventing costly delays in a highly regulated, time-sensitive environment.
- Manage procurement visibility for high-risk, long-lead nuclear components, where delivery disruptions can result in millions of dollars per minute in lost generation.
- Lead recurring meetings and coordination with critical OEM vendors and site supply chain teams to identify risks, resolve gaps, and maintain system-wide readiness.
- Independently develop and analyze Power BI and Excel-based order reports, efficiently reviewing 200+ line items per day to assess inventory status, lead times, safety and engineering constraints, and outage alignment.
- Optimize procurement workflows through Excel automation and standardized reporting, increasing efficiency and enabling faster, data-driven decision making.
- Contribute to enterprise supply chain transformation efforts (RISE initiative), supporting improvements to demand planning and inventory strategy across the nuclear fleet.
Strategic Sourcing Intern
Constellation Energy
Kennett Square, PA
06.2024 - 08.2024
- Supported the nuclear strategic sourcing team in procuring a wide range of goods and services, including plant components, IT services, travel services, and indirect materials, across multiple spend categories.
- Analyzed vendor performance, pricing, and cost structures using internal data and market research, developing reports to support category strategy and sourcing decisions.
- Conducted RFQs and RFPs, evaluated vendor proposals, and participated in supplier presentations, and scored vendors across multiple evaluation categories (cost, performance, risk, and capability) to inform sourcing recommendations.
- Generated purchase orders and engaged in contract negotiation conversations, gaining exposure to commercial terms and supplier risk in regulated energy markets.
- Created and delivered supplier training materials for the Oracle ERP system, improving vendor compliance and accelerating onboarding timelines; trained suppliers directly via Team
- Co-led a fleet-wide nuclear supply safety presentation to an audience of 400+ employees, reinforcing safety culture and supply chain accountability.
Education
Bachelor of Science - Supply Chain Management And Information Systems
Pennsylvania State University
University Park, PA05-2025
Minor - International Business
Pennsylvania State University
University Park, PA05-2025
Study Abroad - International Relations
IES Abroad
Rome, Italy05-2024
Skills
- Data Analysis and Reporting
- Public Speaking & Presentations
- Team Collaboration & Communication
- Excel (advanced), Power BI, Oracle ERP, Asset Suite
- Process Improvement
- Organization & Time Management
Affiliations
- U.S. Women in Nuclear: Engage in discussions on the role of nuclear energy in the clean energy transition while supporting initiatives that empower women in STEM and energy leadership.
- Letters of Love - Club Officer: international 501(c)(3) nonprofit organization that supports children battling illnesses in hospitals by sending them handmade, heartfelt cards.
Timeline
Associate Procurement Specialist - Nuclear Ops
Constellation Energy
09.2025 - Current
Strategic Sourcing Intern
Constellation Energy
06.2024 - 08.2024
Bachelor of Science - Supply Chain Management And Information Systems
Pennsylvania State University
Minor - International Business
Pennsylvania State University
Study Abroad - International Relations
IES Abroad