John Sapper

John Sapper: Email & Phone Number

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Detective Corporal at Castroville Police Dept|San Antonio, Texas, United States

Position:

Detective Corporal at Castroville Police Dept

Location:

San Antonio, Texas, United States

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Last updated: 2026-05-25
Updated: 2026-05-25

Found email addresses for John Sapper:

Business emails:
Personal emails:
j***@hotmail.com,
j***@joinportlandpolice.com,
j***@gmail.com

Found phones for John Sapper:

+1-870-***-**05
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Work Experience 17 years

Detective Corporal at Castroville Police Dept

Oct 2025 - Current

Founder at 10-45, LLC

Oct 2021 - Current

Police Officer/Grant Director at Castroville Police Dept

Sep 2024 - Oct 2025

Senior Special Agent at Union Pacific Railroad

Nov 2021 - Sep 2024

Sergeant at Portland Police Bureau

Sep 2009 - Oct 2021

John Sapper started working in 2009, then the employee has changed 3 companies and 4 jobs. On average, John Sapper works for one company for 4 years 3 months.

Their professional focus is Command, Criminal Intelligence, and Criminal Investigations across 3 core areas.

John holds NIT, Academy Instructor Certification, and Background Investigator certifications.

Education

Doctor of Philosophy - PhD at Liberty University

Executive MBA at Concordia University-Portland

Bachelor of Arts - BA at Portland State

Associate of Arts - AA at Defense Language Institute Foreign Language Center

Frequently Asked Questions

What is John Sapper's email address?

SignalHire found verified email addresses for John Sapper, both business and personal. Their business email is g*******************r@gmail.com, and personal emails include s***@yahoo.com, j***@hotmail.com, and j***@joinportlandpolice.com.

What is John Sapper's phone number?

SignalHire found multiple verified phone numbers for John Sapper: +1-323-***-**69, and +1-870-***-**05.

How do I contact John Sapper at Castroville Police Dept?

You can reach John Sapper 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 John Sapper's professional background?

John Sapper has 17 years of professional experience. They have held roles including Founder, Police Officer/Grant Director, and Senior Special Agent at companies such as 10-45, LLC, Castroville Police Dept, and Union Pacific Railroad. Their education includes Doctor of Philosophy - PhD from Liberty University, and Executive MBA from Concordia University-Portland.

Is John Sapper's contact information up to date?

Yes. John Sapper's SignalHire profile was last updated on 25 May 2026, reflecting their current position as Detective Corporal at Castroville Police Dept in Castroville, Texas, United States.

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