William Ko: Email & Phone Number

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Campus Ambassador at EY|San Francisco Bay Area, United States

Position:

Campus Ambassador at EY

Location:

San Francisco Bay Area, United States

View William Ko's Email

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Last updated: 2026-07-02

Updated: 2026-07-02

Found email addresses for William Ko:

Business emails:

**@ey.com

Personal emails:

w****************l@gmail.com

Found phones for William Ko:

+1-909-***-**18,

+1-870-***-**73

A different William Ko?

Work Experience 12 years

Campus Ambassador at EY

Oct 2024 - Current

Owner - Trading Cards at Self-employed

Aug 2014 - Current

Assurance Intern at EY

Jun 2025 - Aug 2025

Resident Assistant at California Crosspoint Academy

Jul 2023 - May 2024

Assistant Volleyball Coach at California Crosspoint Academy

Aug 2022 - May 2024

Volleyball Team Manager at California Crosspoint Academy

Aug 2014 - Aug 2022

Cashier at South Shore Cafe

Jun 2019 - Jun 2023

Optometric Technician at Berkley Optometric Group

Jun 2022 - Aug 2022

Laboratory Technician at California Polytechnic State University-San Luis Obispo

Mar 2022 - Jun 2022

Sports Referee at California Polytechnic State University-San Luis Obispo

Sep 2021 - Jun 2022

Pre-Optometry Club Member at California Polytechnic State University-San Luis Obispo

Sep 2021 - Jun 2022

Chemistry Tutor at California Polytechnic State University-San Luis Obispo

Mar 2020 - Jun 2022

Dentist Receptionist at Gerald G Gelle, DDS

Jun 2016 - Aug 2017

William Ko started working in 2014, then the employee has changed 6 companies and 12 jobs. On average, William Ko works for one company for 2 years 7 months.

Their professional focus is Animal Care, Animal Handling, and Animal Nutrition across 3 core areas.

Education

Master's of Science at California State University - East Bay

San José State University

Bachelor's degree at California Polytechnic State University-San Luis Obispo

Frequently Asked Questions

What is William Ko's email address?

SignalHire found verified email addresses for William Ko, both business and personal. Their business email is **@ey.com, and personal emails include w****************l@gmail.com.

What is William Ko's phone number?

SignalHire found multiple verified phone numbers for William Ko: +1-909-***-**18, and +1-870-***-**73.

How do I contact William Ko at EY?

You can reach William Ko 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 William Ko's professional background?

William Ko has 12 years of professional experience. They have held roles including Owner - Trading Cards, Assurance Intern, and Resident Assistant at companies such as Self-employed, EY, and California Crosspoint Academy. Their education includes Master's of Science from California State University - East Bay, and San José State University.

Is William Ko's contact information up to date?

Yes. William Ko's SignalHire profile was last updated on 2 July 2026, reflecting their current position as Campus Ambassador at EY in London, United Kingdom.

William Ko Namesakes

Name

Company

Position

William Ko

K Comms

Sales Manager

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William Ko

Self Employed

Ophthalmologist

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William Ko

UBC Geering Up Engineering Outreach

Clubs Instructor

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