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Peter Tseng

Co-Founder & CTO at Open

CTO C-Suite
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Pro only
Pro only
Los Angeles, California, United States
o-p-e-n.com

Company Details

Company: Open
Industry: health, wellness & fitness
Employees: 77
Funding: 14390000
HQ Location: Los Angeles, California, United States
Company LinkedIn: Pro only

Technology Stack

Mailchimp Mandrill Rackspace MailGun Gmail Google Apps Mobile Friendly Facebook Login (Connect) Stripe Google AdWords Conversion Hotjar Facebook Custom Audiences Amplitude Lever Facebook Widget Google Analytics Google Frontend (Webserver) Google Tag Manager Eventbrite Shopify Remote

Professional Summary

Peter Tseng is Co-Founder & CTO at Open. Open operates in the health, wellness & fitness industry and has 77 employees. Based in Los Angeles, California, United States. Classified as a c-suite-level CTO leader. Their organization's technology stack includes Mailchimp Mandrill, Rackspace MailGun, Gmail, Google Apps, Mobile Friendly, and 14 other technologies. Open has raised 14390000 in total funding.

Industry & Role Insights

  • • CTO Rank tracks 138,833 CTO leaders with verified contact information.
  • • There are 3,391 tech leaders in the health, wellness & fitness industry in our database.
  • • We have verified contacts for 4 tech leaders at Open.
  • • 48,652 tech leaders in California are available in our database.
C-Suite level · CTO
Verified Apr 19, 2026

Position in the CTO Rank Database

  • • Peter Tseng is 1 of 140,489 leaders with the CTO role tracked in the CTO Rank database.
  • • 1,529 hold the CTO role at health, wellness & fitness companies (out of 3,439 total health, wellness & fitness leaders in our database).
  • • 9,924 hold the CTO role in California.
  • • 247 hold the CTO role at companies with 77 employees.
  • • Typical CTO compensation in California: $250,000 – $650,000 (median $420,000). Composite from levels.fyi, Glassdoor, and Payscale data; adjusted for state cost of labor.

Data compiled from LinkedIn public profiles, company filings, and verified public technology signals. Methodology & sources · Updated May 2026.

Frequently Asked Questions

How do I contact Peter Tseng?

Peter Tseng has a verified email address on file on CTO Rank. They work at Open. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.

What company does Peter Tseng work for?

Peter Tseng is Co-Founder & CTO at Open, a company in the health, wellness & fitness industry with 77 employees. The company is headquartered in Los Angeles, California, United States.

What is Peter Tseng's role in technology leadership?

Peter Tseng is classified as a CTO leader at the c-suite level.

What technologies does Peter Tseng's organization use?

Peter Tseng's organization uses a technology stack that includes Mailchimp Mandrill, Rackspace MailGun, Gmail, Google Apps, Mobile Friendly, Facebook Login (Connect). This information is useful for sales teams, recruiters, and technology vendors.

Is Peter Tseng open to recruiting or new opportunities?

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

Can I pitch or sell to Peter Tseng at Open?

Peter Tseng is Co-Founder & CTO at Open. CTOs like Peter Tseng typically evaluate vendors in Mailchimp Mandrill, Rackspace MailGun, Gmail, and related categories. Use CTO Rank Pro to get verified email and approach directly.

How accurate is Peter Tseng's profile data?

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