Company Details
Technology Stack
Professional Summary
John Stearns is Chief Technology Officer at Roo. Roo operates in the hospital & health care industry and has 600 employees. Based in San Francisco, California, United States. Classified as a c-suite-level CTO leader. Their organization's technology stack includes Cloudflare DNS, Amazon SES, Gmail, Google Apps, Microsoft Office 365, and 22 other technologies. Roo reports annual revenue of 100000000. Roo has raised 18549921 in total funding.
Industry & Role Insights
- • CTO Rank tracks 138,833 CTO leaders with verified contact information.
- • There are 11,296 tech leaders in the hospital & health care industry in our database.
- • We have verified contacts for 3 tech leaders at Roo.
- • 48,652 tech leaders in California are available in our database.
Position in the CTO Rank Database
- • John Stearns is 1 of 140,489 leaders with the CTO role tracked in the CTO Rank database.
- • 2,511 hold the CTO role at hospital & health care companies (out of 11,414 total hospital & health care leaders in our database).
- • 9,924 hold the CTO role in California.
- • 162 hold the CTO role at companies with 600 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 June 2026.
Frequently Asked Questions
How do I contact John Stearns?
John Stearns has a verified email address on file on CTO Rank. They work at Roo. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.
What company does John Stearns work for?
John Stearns is Chief Technology Officer at Roo, a company in the hospital & health care industry with 600 employees. The company is headquartered in San Francisco, California, United States.
What is John Stearns's role in technology leadership?
John Stearns is classified as a CTO leader at the c-suite level.
What technologies does John Stearns's organization use?
John Stearns's organization uses a technology stack that includes Cloudflare DNS, Amazon SES, Gmail, Google Apps, Microsoft Office 365, Zendesk. This information is useful for sales teams, recruiters, and technology vendors.
Is John Stearns 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 Stearns using the verified contact information available to Pro members. When recruiting a Chief Technology Officer, personalizing your outreach with specifics about the role and tech stack typically yields the best response rate.
Can I pitch or sell to John Stearns at Roo?
John Stearns is Chief Technology Officer at Roo. CTOs like John Stearns typically evaluate vendors in Cloudflare DNS, Amazon SES, Gmail, and related categories. Use CTO Rank Pro to get verified email and approach directly.
How accurate is John Stearns's profile data?
CTO Rank verifies and refreshes profile data weekly. John Stearns's profile includes verified contact details, company information, and technology stack data sourced from multiple public and proprietary sources.
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