Get info about 4xxi

4xxi

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About 4xxi

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.

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.

Our company has already helped and launched a lot of startups that attracted $100 000 000+ investments based on our code and ideas that we have implemented in clients` projects

There are more than 75 senior developers in our team and we are proud of each of them and for 10 years of development experience, we have never failed any project for which we have undertaken.

Also, our company is among TOP-5 development companies in Russia (according to the Clutch rating) and we have just been awarded as «Best Outsourcing Development company» (according to the leading magazine in country)

We are a certified partner of SensioLabs.

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

Number of employees

1-10 employees

Contact information

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Service lines

  • 20%
  • 40%
  • Blockchain
  • Web

Blockchain

  • 40%
  • 20%
  • 10%
  • 30%
  • Ethereum
  • Smart contract
  • Hyperledger
  • Private blockchain

Web

  • 20%
  • 15%
  • 15%
  • 10%
  • 20%
  • WordPress
  • Drupal
  • Joomla
  • Sitecore
  • Weebly

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