Build solutions that accept payments (online, in-person, or in-app), manage products and customers, and handle the operations that keep business running.

Square SDKs · Sample apps · Orders API Overview · Customers API Overview

Square APIs and SDKs allow developers to build custom apps and integrations for payments, customers, commerce, and staff solutions.

In-Person Payments · Online Payment API · In-App Payments · API Reference

Integrate orders, items, and inventory from your POS to your website. ((2)) Manage cash flow. Access your money when you make it with Square Checking.

Square Reader for magstripe · Pricing · POS (Point of Sale) Software... · Support

Sep 11, 2013 · I thought I was going to sit across the table from someone and return rehearsed, stock answers to their standard interview questions. Instead I ...

Dec 14, 2015 · Written by Logan Johnson. An engineer friend recently decided to apply to Square and asked me for interviewing tips.

Square makes it easy to sell in person, online, over the phone, or on the go. The Square Point of Sale app is simple to use, and there's no complex training ...

In person. Accept payments at your counter or on the go. It's easy to get started. Try the Square POS app on your phone or pick from a range of hardworking ...

Virtual Terminal Credit Card... · Security · Instant transfers · Fees and Payments FAQ