What technologies does Circle use?

Circle uses Cloudflare DNS, Sendgrid, Gmail, Google Apps, Zendesk. View their full technology stack — including all 18 detected tools — on StackWho.

Who is the Co-founder & Chief Revenue Officer of Circle?

Andrew Guttormsen is the Co-founder & Chief Revenue Officer at Circle. Get verified contact information on StackWho.

Where is Circle located?

Circle is based in New York, New York, United States.

Circle

circle.so

information technology & services

circle.so

New York, New York, United States

201-500 employees

10500000 revenue

LinkedIn Profile

About Circle

technology, information & internet, information technology & services

Circle's Tech Stack

Decision Makers at Circle

1 contact

Andrew Guttormsen

Co-founder & Chief Revenue Officer

a***@circle.so Sign up to view

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18 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

React-based front-ends indicate a modern web engineering stack. Developer tools, component libraries, testing frameworks, and design systems are relevant sales angles.

Circle's Position in the StackWho Database

• Circle is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 23,956 companies in New York are in the StackWho database.
• 4,373 information technology & services companies are in the 201-500 employee range (same size as Circle).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Circle use?

Circle uses Cloudflare DNS, Sendgrid, Gmail, Google Apps, Zendesk, CloudFlare Hosting, and 12 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Circle?

StackWho has verified email addresses for 1 decision maker at Circle. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Circle directly for sales, recruiting, or partnerships.

What industry is Circle in?

Circle operates in the information technology & services industry, headquartered in New York, New York, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Circle's contact data?

Yes. StackWho Pro members can export decision maker contact data for Circle and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.