Sean McKibben

There are a few different people named Sean McKibben on LinkedIn, but none of them appear to be a Principal Software Engineer at Twilio with the username graphex:

Sean McKibben, Impact Health & Wellness

• President, CEO, COO of Impact Health & Wellness, an integrated medical clinic in Westerville, Ohio1
• Also serves as COO of DASI Simulations, a healthcare AI company1
• Previously President/COO of Mount Carmel Grove City hospital and President of UH Bedford Medical Center1

Sean McKibben, Squarespace

• Creative, collaborative business professional with experience at Squarespace in New York2

Sean McKibben, Clear Height Properties

• 2020 graduate of Xavier University, works at Clear Height Properties3

Other Sean McKibbens

• Congratulated a friend on being tapped into Florida Blue Key leadership honorary4
• UW-Madison graduate with CompTIA A+ certification from Waupaca, Wisconsin5
• Listed on Clay.earth with links to LinkedIn, Twitter and Facebook profiles

None of these Sean McKibbens match the description in the query. The LinkedIn username graphex does not belong to a Principal Software Engineer at Twilio based on the information provided. More details would be needed to identify the specific person referenced.