EJ Castillo

EJ Castillo: Email & Phone Number

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Software Engineer at Cloudflare|Austin, Texas Metropolitan Area, United States

Position:

Software Engineer at Cloudflare

Location:

Austin, Texas Metropolitan Area, United States

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Last updated: 2026-07-01
Updated: 2026-07-01

Found email addresses for EJ Castillo:

Business emails:
e*********o@capitalone.com,
e*******o@apple.com
Personal emails:
e********o@utexas.edu

Found phone for EJ Castillo:

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Work Experience 6 years

Software Engineer at Cloudflare

Jul 2025 - Current

Software Engineer at Rakuten

Feb 2025 - Jun 2025

Software Engineer at Capital One

Aug 2022 - Aug 2024

Software Engineer Intern at DoorDash

May 2021 - Aug 2021

Software Engineer Intern at Apple

Mar 2021 - May 2021

Undergraduate Research Assistant at Texas Advanced Computing Center (TACC)

Sep 2020 - Feb 2021

Software Engineer Intern at Fidelity Investments

Jun 2020 - Aug 2020

EJ Castillo started working in 2020, then the employee has changed 6 companies and 2 jobs. On average, EJ Castillo works for one company for 7 months.

EJ is proficient in Japanese and Spanish. Their professional focus is Algorithms, Amazon Web Services (AWS), and Angular across 3 core areas.

EJ holds AWS Certified Solutions Architect certifications and has been awarded DeWitt T. Ray, Sr. Endowed Scholarship, National AP Scholar, and University Honors

Education

Bachelor of Science - BS at The University of Texas at Austin

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