Top #2 Web Development Company in the world
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 & innovative development company on the market" (c) RBC
Plus, we became "Top #2 Web Development Company in the world" (c) Manifesto
Under-the-hood:
- ⏳ 11+ years on the global markets (US, UK, Australia, Asia, Eastern & Western Europe)
- Publications in TechCrunch, Forbes, Business Insider, NY Times, Wired
- HQ in London and plans for New York and San-Francisco during next year
- 90+ unparalleled projects we are proud of
- 80+ developers, you can leverage (most of them are seniors)
- Own awesome Startup Competitions in London in partnerships with WeWork, Barclays, F6S, 11FS, Capital Enterprise, VCs
headquarters
Focus
Recommended Providers
Portfolio
FIFA, Trivago, Arival Bank, Alfa Bank, Centrallo, AdvisorEngine, Ingenius
Caesar
Caesar is the open-source password and document manager for teams.
Extremely secure encryption methods with a team-friendly interface.
The symbiosis of 1Password and Slack
- Password manager with client encryption
- Team work with passwords
- OAuth + 2FA
- Integration with messengers
- Search and grouping
Ariv.al Bank
Arival is the first bank in the world that combines:
- possibility to open an account for those clients who are in the risk zone (FinTech, expatriates, crypto-players) and thus refused by “traditional” banks.
- “neobank” approach, which is building an ecosystem rather than trying to sell services
- modern technologies and being client-oriented
- US license and possibility to work with the US currency
From the technical point of view, Arival is a platform that unites the best of the best.
E-payments, bank card issuing, online accounting, invoice creating — all of it exists already, but now Arival has provided a single platform for all of this.
The bank is ready and will be launched as soon as a license gets.
Arival has also won a Finovate 2018 prize (it’s one of the most prestigious contests among financial projects).
Alfa Insurance
We have developed an unrivaled product for Alfa Insurance Life form scratch (from masterminding user-stories and design concepts to develop all the components, dependencies and business processes)
Alfa Insurance Life is a subsidiary of Alfa Bank - one of the largest private commercial banks in Russia.
It provides to their clients a mix of investing, health care, and insurance products.
The new personal dashboard allows clients:
- manage their insurance products
- track their investment accounts
- communicate with the bank consultants
- etc
FinTech.
What we did: Website, Backend, Frontend
Contplat
Contplat is an international marketplace uniting sellers and buyers of licenses for TV and cinema and taking copyright into consideration, all of it using blockchain-based smart-contacts.
In less than a year we turned a concept into a full-fledged product that potentially could entered the market and take its own niche.
All the components, including Blockchain, are written using a modern technology stack.
Overbox
The project is a web-platform, online-wallet, chat (browser extension) and a forum for discussion of crypto-stocks performance.
At the registration step, a troll character is generated for the user, who will be able to use this troll as their avatar.
For their comments, the users can get coins for inner use from other users.
The user can spend these coins on developing and modifying of their troll.
The user can also sell their troll or buy a new one in a special market. And all of this is... wait for it… blockchain-based! (almost crypto-kittens)
A.ID
As they come to a bank, every person or body has to go through a compliance procedure, which is checking legitimacy and goodwill to mitigate financial and legal potential risks.
This often takes a lot of time because of paperwork (which is most often done on actual paper).
Fortunately, new technology comes to RegTech market as well.
A.ID is a product that allows to fully digitalize the process of checking legal entities and people.
It’s the first ever service focused on business clients, especially those in the risk zone.
Initially a part of Arival neobank, but then A.ID has become an independent project.
Laba
LABA is an educational media speaks about science in simple words.
Within a short period of time we have launched a full-fledged product that was warmly welcomed by the community (and, for sure, by the client).
Features:
- A complicated and multi-layered test functionality (our tests are cooler than those on meduza)
- Listening to podcasts and watching videos, creating collections of stuff you liked
Groupdolists
Groupdolists, powered by Centrallo, a cross-platform SaaS solution built for security operations and emergency management teams responsible for protecting employees and assets. Developed to simplify crisis response team coordination and recovery, Groupdolists instantly creates a common operating picture that harmonizes processes and procedures across any organization.
Key features of Groupdolists include the capability to:
— Digitize and activate standard and emergency operating procedures;
— Add tasks containing files, links, photos, videos, comments, and due dates;
— Instantly push procedures and tasks into response team's devices;
— See completed and pending tasks in real-time on any device;
— others.
StartUp, Productivity
What we did: Website, Backend, iOS App, Android App
To see more, click here: https://4xxi.com/en/project/groupdolists
Nutmeg Aspirin
Nutmeg Aspirin - is a media portal where people discuss their stories of healing, share natural remedy recipes that they have tested themselves, simply ask each other for help or give advice to others unable to deal with their own health problems themselves, or for people who just want to look and feel better.
A unique design was developed for the site, as well as a user interface which enables simple creation, comment and review of articles and questions.
Мedia, Healthcare, StartUp
What we did: website, backend, frontend
To see more, click here: https://4xxi.com/en/project/nutmeg-aspirin
Loji
LOJI is an iMessage extension which lets users search and forward different places with complete information (address, telephone, website) direct to iMessage in the form of interactive icons.
StartUp, Entertaiment
What we did: Backend, iOS App
To see more, click here: https://4xxi.com/en/project/loji
Smart School
We have developed a smart management system for school projects.
Within this system, a school student can present an idea, gather a team, implement the project together, receive help from consultants and outside experts, and present their project online.
The system allows for:
— project creation and management;
— setting goals and milestones;
— creating and assigning tasks for the team within a particular phase;
— communication, sharing of materials;
— accepting work in line with acceptance criteria;
— preparing a final presentation and demo of a product;
— receipt of reports on the progress of work.
This system is to be introduced to a number of schools to raise the quality of education. There is nothing comparable to this project in its current form, either in Russia or abroad.
EdTech, StartUp.
What we did: Website, Backend, Frontend.
To see more, click here:: https://4xxi.com/en/project/smart-school
Joyst
Joyst is a private community that will help women from all over the world travel, share their trips and experiences in different countries.
Human Race
Humanrace is am iOS fitness app for users to jog or participate in contests in real-time with users from all over the world.
Besides the fantastic UI, the app could boast of extra accurate GPS-tracking.
The evaluation proved it to be 5 to 10 times more accurate than the tracking in rivalling apps (Runkeeper, Strava, etc.).
Portfolio
Portfolio is a service for automated portfolio monitoring, report generation and market analysis. Service has integrations with several data providers including InteractiveBrokers, Portfolio123 and ActiveTick.
FinTech, StartUp.
What we did: Website, Backend, Frontend.
To see more, click here:: https://4xxi.com/en/project/portfolio
Charge.Auto
We have developed a companion app for use on Android for the Charge.Auto project. The app is used by truck drivers to check the vehicle's systems, and for submitting reports about technical performance tests at the start and end of each working day. The automated system for data retrieval from monitors allows the driver to stay abreast of potential problems with the vehicle. The companion app has an important feature, which is a smart system for automatic authorization of the app and the vehicle by means of an exchange of encrypted keys with no human input. When working normally, the app tracks the status of orders and the route, thus making it operationally possible to update on any changes in orders, either from the system or the driver.
Tech, Electric Cars
What we did: Android App
To see more, click here: https://4xxi.com/en/project/charge-auto
Centrallo
Centrallo is an app to create notes and lists for organized individuals. It enables intelligent organization of information, as well as sharing of info with others and joint work. Any content can be added to Centrallo - from photos and video to hyperlinks for Dropbox, Google Drive & OneDrive. The service works on leading mobile platforms, on Apple Watch and Android Wear.
StartUp, Productivity
What we did: Website, Backend, Frontend, iOS App, Android App, Watch App, Android Wear
To see more, click here: https://4xxi.com/en/project/centrallo
PayQR: Android app
PayQR is an app that enables payment of bills, purchases and invoices with the use of QR codes. Once the app has been downloaded and the user's bank card has been added, it only takes one click to pay utility bills or buy a cup of coffee in a cafe.
FinTech, StartUp
What we did: Android App
To see more, click here: https://4xxi.com/en/project/payqr
Export Online
Export Online is an international trading platform that unites all possible services for exporters.
The system helps the companies act quicker in the international market and substantially cut down the expences..
Cleverism
Cleverism helps job seekers boost job interview success, close a higher salary, and get on the career fast-track quickly.
Cleverism is jobs aggregator with a comprehensive capability that gathers vacancies from different sources and provides the user with a convenient interface with many different filters.
Startup
What we did: backend
Visit website: https://www.cleverism.com/
AdvisorEngine
Service for financial advisers that enables total automation of their work, from opening an account for a client and signing documents, to creating a portfolio and working on it by using mathematical and economic modeling. The service has a high level of integration with leading financial organizations.
FinTech, StartUp
What we did: Website, Backend, Frontend
To see more, click here: https://4xxi.com/en/project/advisorengine
Auditarium
Online auditor marketplace. Helps audit companies and auditors find each other with ease. There is a system of tenders in place for the publication of contracts and the possibility of selecting the best practitioners. Integration with the website of the Russian Finance Ministry makes it possible automatically to identify and confirm the experience and skills of the auditors.
StartUp, Marketplace
What we did: Website, Backend, Frontend
To see more, click here: https://4xxi.com/en/project/auditarium
Woolmark Prize
Promo site for the International Woolmark Prize competition. With the help of a unique visual algorithm, developed specifically for this project, users create and promote derivative works based on 12 pieces by leading designers.
Promo
What we did: Website, Backend, Frontend
To see more, click here: https://4xxi.com/en/project/woolmark-prize
Bright Network
This project helps the recent alumni of the UK universities find their first employment.
To help newbies with no experience adapt better for the market, BrightNetwork together with 4xxi is launching Academy project, an online platform for mastering most demanded areas of expertise.
Trivago
Service for holding automated video interviews at Trivago. Candidates fill out the form step by step and reply to questions (in written form or video), and then the result is sent to the corporate HR system.
HR
What we did: Website, Backend, Frontend
To see more, click here: https://4xxi.com/en/project/trivago
WorthFM
WorthFM is a platform for normal users to save and invest financial resources. Through a simple set of steps, WorthFM makes it possible to open a bank account, transfer money, select the optimum portfolio and receive investment revenue. The service also enables pension tax rebates. The whole process is automated from start to finish.
FinTech, StartUp
What we did: Website, Backend, Frontend
To see more, click here: https://4xxi.com/en/project/worthfm
Industry Index
Industry Index is a catalogue of companies with current evaluations from leading marketing experts. Combining expert and consumer evaluations, this project makes it possible to pinpoint someone to implement practical marketing or IT challenges.
AdTech, StartUp
What we did: Backend, Frontend
To see more, click here: https://4xxi.com/en/project/industryindex
Onefit
Onefit is a subscription membership of thousands of fitness clubs. The user purchases a monthly subscription, after which he or she is able to become a member of any of the clubs that belong to Onefit with no additional payment. The service operates in Moscow and St Petersburg.
StartUp, Fitness
What we did: Website, Backend, Frontend
To see more, click here: https://4xxi.com/en/project/onefit
Well
Well is Uber for doctors. The service allows for the automation of the system for putting together a doctor's schedule, with appointments, payments and reports.
MedTech, StartUp
What we did: Website, Frontend, iOS App
To see more, click here: https://4xxi.com/en/project/well
Newtonew
Newtonew is an information media project about education, and addressing the most relevant and useful concepts, theories and methodologies as well as techniques and research, goods and services. We talk about how education and science are developing and changing today, and what they may become in the near future. Only the most important and interesting.
EdTech, StartUp
What we did: Website, Backend, Frontend, iOS App
To see more, click here: https://4xxi.com/en/project/newtonew
Sprut
Management system for pools of commercial posts on the My World social network from Mail.ru. Integration between api mail.ru and CPA ad1 system allows to create ad posts and send them to the advertising slots in the social network, targeted according to audience and an intellectual algorithm to determine the number of displays for the optimum financial return.
CRM, CPA Systems
What we did: Website, Backend, Frontend
To see more, click here: https://4xxi.com/en/project/sprut
IFMO — Game of light
Interactive Physics Olympiad that gives winners privileges when applying to ITMO University
EdTech
What we did: website, backend, frontend
To see more, click here: https://4xxi.com/en/project/ifmo-game-of-light
Reviews
the project
Web Dev for Competition Website
“I haven’t given them a project yet that they couldn’t handle… they’ve always delivered.”
the reviewer
the review
The client submitted this review online.
Introduce your business and what you do there.
I am the founder of Circus Intersection, and we bring together digital strategy and custom development for web, Facebook, and mobile applications.
What challenge were you trying to address with 4xxi?
We wanted to create a promotional site for the international competition Woolmark Prize. This involved 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 a very limited amount of time.
What was the scope of their involvement?
We provided 4xxi the concept of the project, as well as the designs. We needed the front and backend of the website and server infrastructure, which included setup and support. Due to the limited time we had to do this, we had a lot of calls to finalize the scope.
The competition had international designers take pictures of their models and clothing. They wanted people to be able to manipulate that image and have every person re-manipulate either the original image or the next image down, then change it a bit more so that everyone could have an influence. You would be able to view the evolution and the timeline of that image as people applied different effects to the image itself.
Due to this, we had to have a different algorithm, because if there were too many people only focusing on one type of effect, then it could get boring. Therefore, we had an algorithm that loaded the most recent picture, but that was also based on the least, or most used effect so that you would actually get a good sense of what people were doing to the image. They were involved in helping us create that algorithm.
They handled the entire project after I gave them the specs and layout directions. I asked how we were going to build the website and launch it, because we needed to do it very quickly, and we knew they were going to have a big influx of traffic. They helped us with server infrastructure, and everything involved with delivery and optimization of the layout for desktop, tablet, and mobile. We were allowing people to play around with the images and manipulate them, so it was extremely important the site was functional on all platforms. They used PHP, HTML5, and a few different plugins.
The app needed to load quickly, so it had to be lightweight even though it was loading very heavy images. They had to really streamline the delivery of making sure the images that were going to be manipulated were being sent in different formats for various devices. The manipulation of the images that people were doing with their fingers or mouses would also have to be rendered on different resolutions as well, to ensure it would be visible across all platforms. We had an impossible timeline, but 4xxi made it happen.
What is the team dynamic?
There were 5 people working on the project.
How did you come to work with 4xxi?
I’ve been working with them for 15 years. I’ve known them for a long time.
How much have you invested with them?
We’ve spent between $10,000-$50,000 with them.
What is the status of the engagement?
The project began in December 2015 and was completed in 1 month. The project was delivered on time.
What evidence can you share that demonstrates the impact of the engagement?
They gave us another project, so the clients were very happy. The competition had a substantial amount of entries and Woolmark got some world recognition as a contest. It’s been an interesting approach because they got the community involved in participating with actual designers, as well as being a part of the entire process.
How did 4xxi perform from a project management standpoint?
We got weekly feedback and communicated daily through Skype, phone calls, and email. The project needed to be finished quickly, so if we needed anything from each other, the response was immediate and simple.
What did you find most impressive about them?
They’re a trained IT team, and they’re not just developers that learned on their own. They’re engineers and mathematicians. They learn how to do very high-end work with SAP protocols, and they have a very systematic approach to how they work.
Are there any areas they could improve?
I haven’t given them a project yet that they couldn’t handle. They’ve always delivered.
the project
Mobile App Dev for Social Platform
"They are a fantastic team and we wouldn't be where we are today without them!"
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am a director and the Co-Founder of Challenge Social. Challenge Social is an app that allows users to create and engage in fun or serious challenges with their friends, family or people at the top of their game. Its aimed at bringing together communities with similar interests and providing them with a platform to engage in healthy competetion.
For what projects/services did your company hire 4xxi?
We needed somebody to re develop our mobile aplication on both IOS & Android and code our website. We had already spent a whole year with a company developing these until we realised they had created us a terrible platform with 0 insurance & liablity. They really let us down and it took us a while to find a company we could trust.
What were your goals for this project?
To Create a world class platfrom that could be scaled on both IOS & Android and eventually web. To build a brand that could support the competetive communities worldwide. Scale over the coming year and continue to add features from our road map.
How did you select 4xxi?
After lots of talks and recommendations from people we trust we started the process of planning and scoping the workload. And from day one they proved them selves.
Describe the project in detail.
We needed to create a native IOS and Android App to be scaled, 4XXI assured us a high quality code. They have done exactly that. We will contiue to work with 4XXI for the foreable future. The project has had to be completely re designed and coded from day one of working with 4XXI. They have given above and beyond to get us to where we are today.
What was the team composition?
We had 1 Backend Developer We had 2 IOS Devs We had 2 Android Devs We had a QA We had a BA We had a project manager Very reliable and excellent communication.
Can you share any outcomes from the project that demonstrate progress or success?
Please look at Challenge Social on the App Store or Google Play. You will see a great product working.
How effective was the workflow between your team and theirs?
Communication is great, and 4XXI make great suggestions when coming to decision making. Accurate estimations and they provide a hard working, well qualified team!
What did you find most impressive about this company?
Their belief and drive for our project. They are a fantastic team and we wouldn't be where we are today without them!
Are there any areas for improvement?
No
the project
Custom Software Development for Advertising Firm
“I was very impressed by the quality of their work and their development speed.”
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am the VP of engineering for Virool. We are a video advertising and branding firm that prioritizes entertainment. We work with large brands to create video content to share online.
For what projects/services did your company hire 4xxi?
Our internal engineering team was overwhelmed by our project’s scope, so we were looking for a reliable partner to help us build our platform on time and on budget.
What were your goals for this project?
We wanted a user interface for our advertising platform that was easy to support. Because our platform had multiple iterations, each needed a custom-tailored UI design.
How did you select this vendor?
We reached out to several software service providers following recommendations from colleagues. We got quotes and proposals from each of them. 4xxi offered the best terms and I decided to bring them aboard.
Can you go into detail about the services they provided and the scope of the project?
4xxi worked on the UI elements of our customer analytics dashboard for our advertising platform. Eventually, they took over the entire dashboard, which included billing, campaign management, and analytics reports.
What was the team composition?
We mainly worked with a team of five. There was a project manager, a QA specialist, and three engineers. At our request, we used an agile methodology to help us keep the team aligned and autonomous. As our demands changed over time, 4xxi appropriately rotated and scaled their team.
Can you share any information that demonstrates the impact that this project has had on your business?
With the help of 4xxi, we were able to launch our platform on time and stayed within our budget. Over time, we were able to get funding from top investors in Silicon Valley.
How was project management arranged and how effective was it?
I delegated projects and the 4xxi team acted independently. Their project manager efficiently managed their side so I didn’t have to spend much time instructing them.
What did you find most impressive about this company?
I was very impressed by the quality of their work and their development speed. They finished the first draft within the first two months.
Are there any areas where they can improve?
It would have been nice if 4xxi has Ruby on Rails in their stack. They would’ve been able to help with more of the project.
4xxi remained highly communicative during this project to ensure delivery of time-sensitive software. Due to their expertise, dedication, and systematic approach, the application has received world recognition.