Top 100 ReactJS Developers in London

Thoughtbot’s team helped the client develop a custom software solution aimed at enhancing consumer advocacy. With deliverables mostly on the back-end, the client valued the estimable coding skills, rapid completion time, and commitment to quality.

“They provide a consistent level of service that I haven’t seen from agencies or even our in-house team. Their engineering standards, development standards, and the way that they have that consistently through their team is very impressive.” – Head of Product, Consumer Interest Nonprofit

Infinum rebuilt a flight booking app for a startup. The original app was extremely buggy and the company needed further support. One feature Infinum developed allowed customers to sync their calendars to find flights that work around their schedule.

“While many agencies limit your choices, it was quite different with Infinum. They were clear and upfront about what resources we were getting and why and offered us options, which was really nice.” – Senior Project Manager, App Startup

Clock Limited redesigned a website for a news and media outlet. The team also built a custom CMS for the client. The site forms the foundation of the internal team's business.

"The CMS is fantastic and they have been very receptive to our ideas, no matter how big or small." – Site Editor, News Outlet

TkXel provided web development services for a marketing and advertising agency. They helped migrate a custom architecture that included e-commerce, search, browsing, and advertising functions. The project involved NodeJS, .NET, AngularJS, PHP, Java and Ruby. Efficiency of the company has increased because of the partnership with TkXel. 

“I appreciate the fact that, even though they are an offshore company, in order to stimulate a project in its early stages, TkXel sent their developers and lead partners onsite to work with our team and gain a familiarity with what our needs are." – CTO, Marketing and Advertising Company 

Ester Digital worked with a tech startup to redesign their logo and develop its company website. The client was amazed by the graphic design skills of Ester Digital’s team and started to use the new logo for all its marketing.

“We are proud of how the new logo represents us. We currently use the logo and guidelines to create new marketing materials.” – Head of Marketing, Tech Startup

Tapptitude developed an app prototype for a food ordering company. They executed the food ordering company’s vision perfectly and were retained to develop the full product. Some app features Tapptitude developed included platform signup, payment systems, and restaurant menu integration.

“The proof that I’ve been happy with Tapptitude is that we’ve continued working long-term, even though I’ve had the option to use in-house developers. I felt that the communication was great and, most importantly, the quality Tapptitude provides is amazing, as is the communication.” – CEO, Food Ordering App

Theodo UK developed the platform for an online marketplace after the previous developer proved unsatisfactory. The team took wire frames and a prototype provided by the client to build a minimum viable product, using AWS, React, Python, and Django for the framework. The client spoke highly of the engagement.

“They’re extremely knowledgeable and work closely with us to make sure we know what’s going on. Their team is phenomenal and have both dev and interpersonal skills.” — Executive, Digital Office Marketplace

Imaginary Cloud worked on custom software development for an enterprise software platform. Using Angular and Node.js and working from designs, their team built the product with a configurable frontend. They continued to provide support and the client was very pleased with the team’s work.

“Imaginary Cloud created the entire architecture for our app and designed it for large user populations. The platform helped us grow significantly, which led us to win millions of pounds worth of contracts. Their team is intrinsic to our success.” – Strategy Director, Enterprise Software Platform

Appetite Creative Solutions developed a marketing campaign for a digital sales company to increase exposure. They created mockups, high-impact ads, and eye-catching marketing games. The clients' were pleased with the innovative designs.

"They’re hands-on, accommodating, and creative." – Marketing & Advertising Professional, Digital Sales Company

Browser London provides ongoing development work and UX design with a creative agency. Their work involves JavaScript coding, UI/UX design, and additional aspects of technical development.

"They’re a knowledgeable team. Using their modern, forward-thinking outlook, they delivered a beautiful product. They’re experienced and dedicated, allowing them to ensure that the project is spot-on." Strategy Director, Creative Agency

Thought&Function developed an app for a personal finance company. The app was built entirely from scratch using React Native for both Android and iOS platforms. The app was released earlier than scheduled.

“For me, what sets them apart is the relationship.” - Founder, Personal Finance Company

A cloud platform developer hired Myplanet for assistance with digital strategy, information architecture, and user experience. The client's goal was to rebrand and reposition its digital presence as it moved away from providing hardware to providing cloud services. The client appreciated Myplanet's "customer-centric" approach to project management.

"From day one to January 2015, we experienced a 300% increase in site traffic and 200% increase in leads coming from the web. Our bounce rate went down and our net promoter score went up." - Chief Marketing Officer & SVP of Business Operations, Cloud Platform Developer 

Code&Care provided IT maintenance services for a disability data provider. The provider needed a partner to work on their production system. Code&Care was able to provide sufficient solutions for the provider.

“Good, they’re aware of what’s going on.” - CEO, Disability Data Provider

Marzee Labs recently worked on multiple web designs for a TV station. They provided Drupal development and worked on the main websites and the project was successful.

“Their ability to always find new talents and recruit some good developers impressed me.” – Project Manager, TV Station

AppSierra Solutions provided WordPress development and SEO for a web development company. They incorporated backend additions and plugins for a major improvement initiative to the online system. They continue to provide SEO and app builds. The client was impressed by their motivation.

“They're organized, have a wide skill set, and guide clients in a way that promotes results. At the same time, they’re flexible enough to accommodate our idiosyncrasies. They delivered solid work and met our deadlines consistently.” – CEO & Project Manager, Web Development Company
 

An education app provider hired SO technology to develop a math teaching app. As part of the engagement, SO technology designed the app's architecture, outlined rudimentary designs, developed the database and back end, built an admin site, and built a game for the platform. The platform was completed and became popular among children, parents, and teachers. SO technology continues to provide technical support.

"They’re very versatile. I know that I can ask them to handle a bunch of different tasks, and they will be able to manage it." - Owner & Director, Education App Provider

Tech Alchemy developed a new UX for an existing cross-platform mobile app prototype for a health startup using Flutter. The team went through three sprints to deliver the product. Their work helped the client simplify a complex app.

"We were able to drastically simplify a complex app and release it to our corporate clients." –CTO & CPO, Health Startup

Chelsea Apps built an SDK for a customer feedback corporation. The SDK was to be inserted in customers' own mobile applications for better testing. It needed to be easy-to-understand for development teams to work with easily. Chelsea Apps made an SDK that was compatible for both Android and iOS.

"We're in the early days, but we've had 3 clients sign up to use the SDK and 2 of those clients are releasing updates to there own apps in the next month, so we're excited to see the user feedback, but the developer feedback so far has been great." - CTO, Customer Feedback Co.

Indie Ridge provides web development services for the owner of a media consultancy firm. The team is responsible for building a website to improve the client's online presence and promote their services.

"Their speed is excellent. They're always available and easy to work with."

AVAMAE worked with a B2B auction platform by providing a technical solution to physical problem. An app was built as a result, and it featured a multi-level, B2B platform to conduct and participate auctions through. The Microsoft-based app allows for simultaneous listing and bidding at the same time across many devices.

"Because of their work, we were able to launch the product and begin onboarding companies. We already have over 150 businesses signed up, and we’re beginning to see traction as well. At this point, we’re crowdfunding to expand our services. The site looks amazing, and their team continues to work very closely with it to ensure that it keeps improving over time. It’s been a great collaboration." - CEO, B2B Auction Platform

Codest developed the frontend and backend of a web-based tool for booking targeted online ads for a media company. The client found value in their nuanced understanding of industry needs, fluid communication, and high reliability. They enhanced the product using Ruby on Rails and JavaScript, and it has dramatically increased revenue and contributed to business growth.

“Codest’s work has had a positive effect on our income. The platform makes it easier for our team to sell ads, which has resulted in increased business. It’s also being used by external customers, making it one of our most important products.” – Head of Development, Media Company

Mojo Digital was hired to develop a website for a financial literacy program. They were responsible for the front- and backend development, as well as managing the content and compliance certificates.

"They worked hard on our project, and they were very understanding when we had some delays on our part."

Together created a WordPress marketing website for a legal tech platform. The team built the site from scratch and provided UI/UX designs, ensuring a strong local presence.

"I was impressed with their ability to understand the product that we sell. They also have a strong knowledge of selling products for startups." – Data & Growth Lead, Legal Tech Platform

A household staff recruitment agency hired Kitty to rebrand the company and develop their website from scratch. The goal was to improve customer and candidate conversions.

"I couldn't be happier with the outcome."

One of Innovify’s clients, an on-demand delivery platform, wanted to streamline how merchants and businesses placed orders and how they assigned drivers. Innovify developed an Android app and website and helped with marketing and strategy.

“I have worked with a couple of these companies before, but they haven’t been as process-oriented as Innovify. They have good processes in place and everything was good for me.” – Founder, Logistics Company

Milo Creative built a mobile app to create coverage for a third party client. The team designed the platform's UX and UI, then developed methods for data importation. The app gained thousands of users in a short period of of time while generating the buzz that the client desired.

“Within the first few days, the app earned over 10,000 users, which was great for such a niche app. It was the perfect tool to get our client’s project in front of journalists to generate awareness.” –Head of Production, Tech Communications Agency
 

A software startup hired Imobisoft to help develop their gifting mobile app. Imobisoft developed the frontend and backend of the app using three different coding languages. The app features promotion pages, maps, GPS payment methods, and user wallet. Imobisoft met all expectations with the completed project, and the app passed all tests. 

"They’ll find a solution if you’re stuck. They’ll find a way to make something possible." - CEO, Software Startup

KUBAS Labs developed a web and analytics tool for a digital marketing firm. The firm was working with a client to find a solution that could track data better than Google Analytics. The client was happy with the website tool that KUBAS Labs developed.

“They have a very high-skilled e-commerce development division with experience in Magento, WordPress, and Shopify.” - CEO, Digital Marketing Firm

An industrial tools company hired iConnect info solutions pvt ltd to provide custom software development services. They are tasked with developing and designing the company's website.

"Their expertise and speed of execution of the platform have been impressive."

An automotive company hired DataMix to design different landing pages for various automotive models. They also perform web management and maintenance. The landing pages were completed within the set timeline and budget.

"They have a great understanding." – Director of Digital Marketing, Automotive Company