What technologies does Four use?

Four uses Sendgrid, Gmail, Google Apps, Microsoft Office 365, Microsoft Azure Hosting. View their full technology stack — including all 22 detected tools — on StackWho.

Who is the Co-Founder of Four?

Josh Kastel is the Co-Founder at Four. Get verified contact information on StackWho.

Where is Four located?

Four is based in Miami, Florida, United States.

Four

Q: Who is the Chief Technology Officer and Co-Founder (acquired by NYSE: PRG) of Four?

Oren Hizkiya is the Chief Technology Officer and Co-Founder (acquired by NYSE: PRG) at Four. Get verified contact information on StackWho.

Q: What industry is Four in?

Four operates in the financial services industry.

paywithfour.com

financial services

paywithfour.com

Miami, Florida, United States

11-50 employees

LinkedIn Profile

About Four

online payments, saas, technology, bnpl, shopping, buy now pay later, computer software, information technology & services

Four's Tech Stack

Decision Makers at Four

2 contacts

Oren Hizkiya

Chief Technology Officer and Co-Founder (acquired by NYSE: PRG)

o***@paywithfour.com Sign up to view

Josh Kastel

Co-Founder

j***@paywithfour.com Sign up to view

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22 technologies detected · 2 decision makers · Emails available

Sales Outreach Angle

Stripe usage indicates active payment processing and likely a SaaS or marketplace model. Finance tools, billing automation, and fraud prevention solutions are highly relevant.

Four's Position in the StackWho Database

• Four is 1 of 21,667 financial services companies tracked in StackWho.
• 21,586 financial services companies in our database have verified decision-maker emails (100% of the cohort).
• 18,400 companies in Florida are in the StackWho database.
• 7,667 financial services companies are in the 11-50 employee range (same size as Four).

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 Four use?

Four uses Sendgrid, Gmail, Google Apps, Microsoft Office 365, Microsoft Azure Hosting, Facebook Login (Connect), and 16 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Four?

StackWho has verified email addresses for 2 decision makers at Four. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Four directly for sales, recruiting, or partnerships.

What industry is Four in?

Four operates in the financial services industry, headquartered in Miami, Florida, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Four's contact data?

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