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 have a deep product expertise in FinTech, EdTech and MedTech industry. Also we can create and like products with Big Data, Artificial Intelligence and Machine Learning. 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 are a certified partner of SensioLabs.

Our concise technology stack:
Symfony / PHP / PostgreSQL / MySQL / MongoDB / Redis / RabbitMQ / React / Redux / PostCSS / Ruby / Rails etc.

Services provided by 4xxi:

The major services offered by 4xxi include web development, mobile app development, custom software development, design, QA and testing, support and maintenance.