Efrin Castillo: Email & Phone Number

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IT Service Engineer WISC at Harvard University|Boston, Massachusetts, United States

Position:

IT Service Engineer WISC at Harvard University

Location:

Boston, Massachusetts, United States

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Last updated: 2026-08-13

Updated: 2026-08-13

Found email addresses for Efrin Castillo:

Business emails:

c********e@harvard.edu

Personal emails:

c***@buildwithmba.com,

c***@aol.com,

c***@hotmail.com

Found phones for Efrin Castillo:

+1-205-***-**75,

+1-205-***-**77,

+1-623-***-**79,

+1-480-***-**42

A different Efrin Castillo?

Work Experience 4 years

IT Service Engineer WISC at Harvard University

Jan 2026 - Current

IT Service Engineer WISC Intern at Harvard University

Jan 2026 - Jul 2026

Sales Assistant at The Home Depot

Sep 2023 - Mar 2026

Laborer at MBA Builders

Nov 2022 - Oct 2023

Cashier at Dukin Donuts

Jan 2022 - Oct 2022

Efrin Castillo started working in 2022, then the employee has changed 3 companies and 4 jobs. On average, Efrin Castillo works for one company for 1 year 1 month.

Their professional focus is Business Strategy, Computer Hardware, and Computer Hardware Troubleshooting across 3 core areas.

Efrin holds Customer Service Leadership, Customer Service Strategy, and Unlocking Authentic Communication in a Culturally-Diverse Workplace certifications.

Education

Year Up United

Frequently Asked Questions

What is Efrin Castillo's email address?

SignalHire found verified email addresses for Efrin Castillo, both business and personal. Their business email is c********e@harvard.edu, and personal emails include c***@buildwithmba.com, c***@aol.com, and c***@hotmail.com.

What is Efrin Castillo's phone number?

SignalHire found multiple verified phone numbers for Efrin Castillo: +1-205-***-**75, +1-205-***-**77, and +1-623-***-**79.

How do I contact Efrin Castillo at Harvard University?

You can reach Efrin Castillo through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Efrin Castillo's professional background?

Efrin Castillo has 4 years of professional experience. They have held roles including IT Service Engineer WISC Intern, Sales Assistant, and Laborer at companies such as Harvard University, The Home Depot, and MBA Builders. Their education includes Year Up United.

Is Efrin Castillo's contact information up to date?

Yes. Efrin Castillo's SignalHire profile was last updated on 13 August 2026, reflecting their current position as IT Service Engineer WISC at Harvard University in Cambridge, Massachusetts, United States.

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