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John Sonnenschein

Founder & CTO at Crowdalert

CTO C-Suite
j***@crowdalert.com Sign up
Pro only
Pro only
San Francisco, California, United States

Company Details

Company: Crowdalert
Employees: 3
HQ Location: Alameda, California, United States
Company LinkedIn: Pro only

Professional Summary

John Sonnenschein is Founder & CTO at Crowdalert. Crowdalert operates in the computer & network security industry and has 3 employees. Based in San Francisco, California, United States. Classified as a c-suite-level CTO leader. Their organization's technology stack includes Route 53, Gmail, Google Apps, Amazon AWS, Mobile Friendly, and 5 other technologies.

C-Suite level · CTO
Verified Apr 28, 2026

Position in the CTO Rank Database

  • 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 June 2026.

Frequently Asked Questions

How do I contact John Sonnenschein?

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

What company does John Sonnenschein work for?

John Sonnenschein is Founder & CTO at Crowdalert, a company in the computer & network security industry with 3 employees. The company is headquartered in Alameda, California, United States.

What is John Sonnenschein's role in technology leadership?

John Sonnenschein is classified as a CTO leader at the c-suite level.

What technologies does John Sonnenschein's organization use?

John Sonnenschein's organization uses a technology stack that includes Route 53, Gmail, Google Apps, Amazon AWS, Mobile Friendly, Google Tag Manager. This information is useful for sales teams, recruiters, and technology vendors.

Is John Sonnenschein open to recruiting or new opportunities?

CTO Rank does not track open-to-work status. The best approach is to reach out directly to John Sonnenschein using the verified contact information available to Pro members. When recruiting a 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 John Sonnenschein at Crowdalert?

John Sonnenschein is Founder & CTO at Crowdalert. CTOs like John Sonnenschein typically evaluate vendors in Route 53, Gmail, Google Apps, and related categories. Use CTO Rank Pro to get verified email and approach directly.

How accurate is John Sonnenschein's profile data?

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