Top 70 ReactJS Developers in the United Kingdom

xDesign developed to help a modular building manufacturer better monitor its product delivery. The client mapped out its goals, from which they designed wireframes, prototyped, and ultimately delivered the app. The client was impressed with their ability to understand the project goals and provide input to improve the product. 

"They picked up our business process very very quickly and they were very good at pointing out things they thought might be better." – IT & Digital Manager, Modular Building Manufacturer

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

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

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

GearedApp developed apps for a poultry breeding company. The client needed three different apps for its separate global brands. GearedApp took over from another developer and added several new functionalities, improving the design of the apps and decreasing their download times. The client was impressed by the improvements that were made to the product and the speed with which they were implemented.

“They’ve improved both the apps’ design and functionality and dramatically reduced their download time.” – Assistant Marketing Manager  

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

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

Sonin built an app and website for a custom afterlife messages service. They developed the app to be very user friendly, with the ability to upload photos and letters, and to merge audio, video, images, and text. The client was happy with the finished app, and said that it was simple and intuitive. 

“Their technical competency was the most impressive thing. Some of the features we wanted in the app were quite complex.” – Operations Director, Custom Afterlife Messages Service
 

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

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 

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

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

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 restaurant promotion startup needed somebody to develop their product. UMM Digital used a MEAN stack to create native iOS and Android apps, and the backend infrastructure for their website.

“They had some challenges to solve, but they had a committed and strong working team who were able to pull it off. I would rate their performance highly.” — Co-Founder, Restaurant Loyalty App

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

PowerGate was hired by a consulting company to help develop a custom application that analyzes the costs and identifies potential improvements in multiple factories for one of its clients. PowerGate was able to provide the necessary assistance despite the complex requirements and tight deadline.

"They have precise deadlines and a strict agile approach." - Head of Data Science, Consulting Company

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.

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

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

CronJ IT Technologies partnered with an education platform to develop a web application for users to assemble teams, perform tasks, and earn points that are redeemable for gift cards. They provided successful features for the launch of the application.

“The platform has lots of features. User can earn gift cards by solving problems, which makes it more appealing. We appreciated their project management, especially compared to the vendors we had worked with before.” –– Project Manager, Education Platform

Element Softworks Ltd oversaw a tire shop's SEO strategy and website development. They also designed the wireframes for the website and integrated Google Analytics, resulting in a boost in leads for the client.

"My website is now modernized, works well, and is mobile-compatible." – Managing Director, Tire Shop

Bigger Picture recently worked on web development for an electronic systems manufacturer. They designed a new website with animations while enhancing user experience for that client.

“We saw an increase in traffic and the feedback from our customers has been very positive. ” — Marketing Manager, Electronic Systems Manufacturer

 

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

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
 

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

Jyst designed and developed an app for a news company. Their team coded in Elixir and React and built the platform for iOS. The app met expectations and received positive feedback.

“Their quality of work has just been great. All around we’re extremely pleased with them.” – Co-Founder & Co-CEO, News Company

Noughts & Ones provided Squarespace development services for the client of a design agency. They worked to develop an entire Squarespace site for the client, based on some rough initial designs and a list of requirements. They produced a platform that exceeded the client's expectations.

"Noughts & Ones did a great job. Even though our client had experience with Squarespace, they had never seen a site quite like this one before. They had a great experience." - Designer, Design 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

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

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