Company Details
Technology Stack
Professional Summary
Colin Constable is Internet Optimist / Co-Founder & CTO at Atsign. Atsign operates in the information technology & services industry and has 32 employees. Based in Mariposa, California, United States. Classified as a c-suite-level CTO leader. Their organization's technology stack includes Rackspace MailGun, Sendgrid, Gmail, Google Apps, Amazon AWS, and 14 other technologies. Atsign reports annual revenue of 21803000. Atsign has raised 18982998 in total funding.
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 Colin Constable?
Colin Constable has a verified email address on file on CTO Rank. They work at Atsign. Pro members can access direct email addresses, LinkedIn profiles, and phone numbers.
What company does Colin Constable work for?
Colin Constable is Internet Optimist / Co-Founder & CTO at Atsign, a company in the information technology & services industry with 32 employees. The company is headquartered in San Jose, California, United States.
What is Colin Constable's role in technology leadership?
Colin Constable is classified as a CTO leader at the c-suite level.
What technologies does Colin Constable's organization use?
Colin Constable's organization uses a technology stack that includes Rackspace MailGun, Sendgrid, Gmail, Google Apps, Amazon AWS, Google Cloud Hosting. This information is useful for sales teams, recruiters, and technology vendors.
Is Colin Constable open to recruiting or new opportunities?
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Can I pitch or sell to Colin Constable at Atsign?
Colin Constable is Internet Optimist / Co-Founder & CTO at Atsign. CTOs like Colin Constable typically evaluate vendors in Rackspace MailGun, Sendgrid, Gmail, and related categories. Use CTO Rank Pro to get verified email and approach directly.
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