Jay Jang

Jay Jang: Email & Phone Number

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Head of Business at Sunnyside Labs (Formerly Test in Prod)|Seoul, Republic of Korea

Position:

Head of Business at Sunnyside Labs (Formerly Test in Prod)

Location:

Seoul, Republic of Korea

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Last updated: 2026-05-20
Updated: 2026-05-20

Found email addresses for Jay Jang:

Business emails:
*a*@testinprod.io
Personal emails:

Found phone for Jay Jang:

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Work Experience 7 years

Head of Business at Sunnyside Labs (Formerly Test in Prod)

Nov 2025 - Current

Protocol Manager at Soneium at Startale Group

Nov 2024 - Nov 2025

Business Strategist at Kroma at WEMADE

Jun 2022 - Nov 2024

Researcher at Decipher

Mar 2023 - Feb 2024

Marketing Manager at 현대카드·현대커머셜(HyundaiCard·HyundaiCommercial)

Jul 2020 - Jun 2022

Research Assistant at Kakao Corp

Feb 2020 - Jul 2020

Junior Marketing Manager at Amazon Web Services (AWS)

Jun 2019 - Dec 2019

Jay Jang started working in 2019, then the employee has changed 6 companies and 6 jobs. On average, Jay Jang works for one company for 1 year 1 month.

Jay is proficient in English, Japanese, and Korean. Their professional focus is Business Development, Business Strategy, and English across 3 core areas.

Education

Bachelor's degree at Yonsei University

Bachelor's degree at Copenhagen Business School

Hanyoung Foreign Language High School

Skills

Business Strategy, Business Development, English

Frequently Asked Questions

What is Jay Jang's email address?

SignalHire found verified email addresses for Jay Jang, both business and personal. Their business email is j*********g@startale.org, and personal emails include s*******0@gmail.com.

What is Jay Jang's phone number?

SignalHire found a verified phone number for Jay Jang: +82-***-***-8080.

How do I contact Jay Jang at Sunnyside Labs (Formerly Test in Prod)?

You can reach Jay Jang 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 Jay Jang's professional background?

Jay Jang has 7 years of professional experience. They have held roles including Protocol Manager at Soneium, Business Strategist at Kroma, and Researcher at companies such as Startale Group, WEMADE, and Decipher. Their education includes Bachelor's degree from Yonsei University, and Bachelor's degree from Copenhagen Business School.

Is Jay Jang's contact information up to date?

Yes. Jay Jang's SignalHire profile was last updated on 20 May 2026, reflecting their current position as Head of Business at Sunnyside Labs (Formerly Test in Prod).

Jay Jang Namesakes

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Jay Jang
OptechKorea Co.,ltd
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Jay Jang
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Jay Jang
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