4xxi is a world-class web & mobile development company helping Startups, SMB and Enterprises to solve their business problems, accomplish goals, increase revenues and cut costs.
We change industries. And even people's lives.
There are more than 80 excellent global projects in our portfolio, most of them regularly get publications in Forbes, TechCrunch, New York Times, Yahoo, Business Insider etc.
We have a deep product expertise in FinTech, EdTech and MedTech industry.
Also we can create and like products with Big Data, Artifical Intelligence and Machine Learning.
We are a certified partner of SensioLabs.
Our concise technology stack:
Android/ iOS/ Objective-C/ Symfony / PHP / PostgreSQL / MySQL / MongoDB / Redis / RabbitMQ / React / Redux / PostCSS / Ruby / Rails etc.