Company Details
Technology Stack
Professional Summary
Jongsic Choi is CISO / CTO at OZYS. OZYS operates in the information technology & services industry and has 18 employees. Based in Seoul, South Korea. Classified as a c-suite-level CTO leader. Their organization's technology stack includes Cloudflare DNS, Gmail, Google Apps, CloudFlare Hosting, React Native, and 1 other technologies.
Industry & Role Insights
- • CTO Rank tracks 138,833 CTO leaders with verified contact information.
- • There are 166,587 tech leaders in the information technology & services industry in our database.
Position in the CTO Rank Database
- • Jongsic Choi is 1 of 140,489 leaders with the CTO role tracked in the CTO Rank database.
- • 62,499 hold the CTO role at information technology & services companies (out of 167,492 total information technology & services leaders in our database).
- • 1,653 hold the CTO role at companies with 18 employees.
Data sourced from 484,726 tech leadership profiles. Updated May 2026.
Frequently Asked Questions
How do I contact Jongsic Choi?
Jongsic Choi has a verified email address on file on CTO Rank. They work at OZYS. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.
What company does Jongsic Choi work for?
Jongsic Choi is CISO / CTO at OZYS, a company in the information technology & services industry with 18 employees. The company is headquartered in Seoul, South Korea.
What is Jongsic Choi's role in technology leadership?
Jongsic Choi is classified as a CTO leader at the c-suite level.
What technologies does Jongsic Choi's organization use?
Jongsic Choi's organization uses a technology stack that includes Cloudflare DNS, Gmail, Google Apps, CloudFlare Hosting, React Native, Android. This information is useful for sales teams, recruiters, and technology vendors.
Is Jongsic Choi open to recruiting or new opportunities?
CTO Rank does not track open-to-work status. The best approach is to reach out directly to Jongsic Choi using the verified contact information available to Pro members. When recruiting a CISO / CTO, personalizing your outreach with specifics about the role and tech stack typically yields the best response rate.
Can I pitch or sell to Jongsic Choi at OZYS?
Jongsic Choi is CISO / CTO at OZYS. CTOs like Jongsic Choi typically evaluate vendors in Cloudflare DNS, Gmail, Google Apps, and related categories. Use CTO Rank Pro to get verified email and approach directly.
How accurate is Jongsic Choi's profile data?
CTO Rank verifies and refreshes profile data weekly. Jongsic Choi's profile includes verified contact details, company information, and technology stack data sourced from multiple public and proprietary sources.
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