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Joseph Rubenstein

CTO and President at Umbra Technologies (HK) Limited

CTO C-Suite
j***@umbratech.com Sign up
Pro only
Hong Kong, Hong Kong Island, Hong Kong

Company Details

Company: Umbra Technologies (HK) Limited
Employees: 1
Company LinkedIn: Pro only

Professional Summary

Joseph Rubenstein is CTO and President at Umbra Technologies (HK) Limited. Based in Hong Kong, Hong Kong Island, Hong Kong. Classified as a c-suite-level CTO leader.

Industry & Role Insights

  • • CTO Rank tracks 138,833 CTO leaders with verified contact information.
  • • 341 tech leaders in Hong Kong Island are available in our database.
C-Suite level · CTO
Verified Apr 22, 2026

Position in the CTO Rank Database

  • • Joseph Rubenstein is 1 of 140,489 leaders with the CTO role tracked in the CTO Rank database.
  • • 149 hold the CTO role in Hong Kong Island.
  • • 4,014 hold the CTO role at companies with 1 employees.

Data sourced from 484,726 tech leadership profiles. Updated May 2026.

Frequently Asked Questions

How do I contact Joseph Rubenstein?

Joseph Rubenstein has a verified email address on file on CTO Rank. They work at Umbra Technologies (HK) Limited. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.

What company does Joseph Rubenstein work for?

Joseph Rubenstein is CTO and President at Umbra Technologies (HK) Limited with 1 employees.

What is Joseph Rubenstein's role in technology leadership?

Joseph Rubenstein is classified as a CTO leader at the c-suite level.

Is Joseph Rubenstein open to recruiting or new opportunities?

CTO Rank does not track open-to-work status. The best approach is to reach out directly to Joseph Rubenstein using the verified contact information available to Pro members. When recruiting a CTO and President, personalizing your outreach with specifics about the role and tech stack typically yields the best response rate.

Can I pitch or sell to Joseph Rubenstein at Umbra Technologies (HK) Limited?

Joseph Rubenstein is CTO and President at Umbra Technologies (HK) Limited. CTOs like Joseph Rubenstein typically evaluate vendors in developer tooling, infrastructure, and security categories. Use CTO Rank Pro to get verified email and approach directly.

How accurate is Joseph Rubenstein's profile data?

CTO Rank verifies and refreshes profile data weekly. Joseph Rubenstein's profile includes verified contact details, company information, and technology stack data sourced from multiple public and proprietary sources.