4xxi

4xxi

World-class Technology partner

5.0 (5 Reviews)
About 4xxi
We are big on creating eminently successful businesses -  🖥 products we have developed from scratch so far have raised in excess of 💰$495,000,000 in funding! 🙅‍♂️ No one failed projects In addition, we were named as 👨‍🔬 "Best & ...
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$50 - $99/hr
50 - 249
2008
Russia, United Kingdom
4xxi
World-class Technology partner
5.0 (5 Reviews)
5 Reviews
Top development team
Emily Jipson General Manager & Chief Product Officer at WorthFM
on 19/9/17
4xxi has been a great partner to WorthFM. I appreciate how they've grown with us, providing services ranging from in-depth architectural support to design. The project manager is the best I've ever worked with, understanding our business needs and helping craft technical specs that allowed for a seamless product development execution.
Quality of deliverable
Customer support
Value for money
Overall rating

What is it about the company that you appreciate the most?

Excellent partnership and commitment to quality

Project Details
Project Name
Top development team
Services:
Web Development
Project Budget:
$10001 to $50000
Project Duration:
52 Weeks
Project Status:
In progress
Review for 4xxi
Konstantin Seregin
on 30/8/17
Quality of deliverable
Customer support
Value for money
Overall rating
Project Details
Services:
Mobile App Development
Project Status:
Completed
Amazing to work with. Super smart. Super responsive.
Michael Sher Founder at Groupdolists
on 24/8/17
Blessed that I found them almost 5 years ago! Just paid my 47th invoice and happy to pay them. Quality work. Quality people. Quality everything. We are NYC based and the time difference works perfectly for us.
Quality of deliverable
Customer support
Value for money
Overall rating

What is it about the company that you appreciate the most?

Speed. Quality of product. Responsiveness. Energy. Passion. Brains. Ability to quickly find quality candidates to fill various positions when we need to expand the development team.

What was it about the company that you didn't like which they should do better?

Nothing, honestly.

Project Details
Project Name
Amazing to work with. Super smart. Super responsive.
Services:
Mobile App Development
Project Budget:
$200000+
Project Duration:
100+ Weeks
Project Status:
In progress
4xxi Exceeded Expectations
Mara Berkman Landis Founder at NutmegAspirin.com
on 22/8/17
A friend recommended 4xxi to build a business website. Working with them was extremely professional. They are honest and deliver a great product. They custom built a high functioning, fantastic site. They came in on budget and on time. And they are always available for any tweaks or fixing glitches. Response time is almost immediate. They also brought many ideas to the table that we implemented. They offered their opinions based on experience rather than just implementing what we wanted. Their advice was greatly appreciated.
Quality of deliverable
Customer support
Value for money
Overall rating

What is it about the company that you appreciate the most?

Easy to work with, extremely reliable and delivers.

What was it about the company that you didn't like which they should do better?

They are Russian. THey speak English but may not catch typos!

Project Details
Project Name
4xxi Exceeded Expectations
Services:
Web Development
Project Budget:
$10001 to $50000
Project Duration:
8 Weeks
Project Status:
In progress
Woolmark Prize
David Nadezhdin Co Founder, CEO at SIG.NUM
on 9/8/17
We wanted to create a promotional site for the international competition Woolmark Prize with a unique visual algorithm by which our users could create and promote derivative works based on 12 pieces by leading designers. The challenge was to launch the website in very limited time.
The project started in December 2015 and was completed in 1 month. The project was delivered on time!
Quality of deliverable
Customer support
Value for money
Overall rating

What is it about the company that you appreciate the most?

We just provided 4xxi the concept of the project and the designs. We needed: a website (backend and frontend) + server infrastructure setup & support. Due to the limited time we had a lot of calls to finalize the scope.

Project Details
Project Name
Woolmark Prize
Services:
Web Development
Project Budget:
$10001 to $50000
Project Duration:
12 Weeks
Project Status:
Completed
Contact information
ru
4xxi
2G Malaya Monetnaya street, Sankt Peterburg, Sankt-Peterburg 197101
Russia
+79602516041
gb
4xxi
99A Gagarina street, London, London 430027
United Kingdom
+79602516041
gb
4xxi
8 Devonshire Square, Spitalfields, London, London EC2M 4PL
United Kingdom
+442039174556
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