Experience at the Edge
eFissioncy is led by Greg Weaver, a results-driven nuclear professional with a career defined by first-of-a-kind (FOAK) successes. From the engine rooms of Navy submarines to the front lines of the AP1000 deployment, Greg brings a technical conscience to every project.
A Legacy of AP1000 & Advanced Reactor Leadership
Greg’s track record includes some of the most significant milestones in modern nuclear history:
Vogtle Units 3 & 4: Served as Initial Test Program Manager from the critical construction turnover of Unit 3 through the successful commercial operation of Unit 4.
NuScale Power: Currently serves on the Technical Advisory Board (TAB), providing strategic insight into the transition from SMR R&D to commercial operations.
Savannah River Site (SRS): Leading the upgrade of the site Commissioning Administration Manual and the development of an NQA-1 Test Engineer Training program.
Global Standardization: Developed the Standard Delivery Model for AP1000 commissioning and designed a FOAK Startup Test Engineer training facility featured by the Wall Street Journal and PBS News Hour.
My Approach
What began as a passion project has evolved into something more. We’re proud of where we’ve been and even more excited for what’s ahead. What sets us apart isn’t just our process—it’s the intention behind it. We take time to understand, explore, and create with purpose at every turn.
Simple ideas, lasting impact
Through every step, we've focused on staying true to our values and making space for thoughtful, lasting work.
We build with clarity, act with integrity, and always stay curious.