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

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

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

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

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

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

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 

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

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

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

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

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

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

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."

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

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

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."

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."

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

Rudo Studio worked with a sustainable fashion tech startup to build a new WordPress website. Their work resulted in a 400% increase in leads. 

"Rudo Studio understands our brand guidelines and is really receptive to our feedback." – Head of Marketing, Fashion Startup

An e-commerce business hired Vevol Media for e-commerce development. The team aims to increase the conversion rate by revamping the website using a Shopify theme, enhancing user experience, and working on CRO.

"We find their yes-can-do attitude impressive."

Hero Team developed a custom e-commerce website for a creative agency. The platform also includes an informational brochure. They delivered quality work and met project requirements. The team worked hard to ensure everything was done in a timely manner.

“Having a trusted development partnership on hand is a hugely important tool for our business and changes the scope of the work that we're able to take on.” – Founder, Independent Creative Agency

Lemonat created a petition website that addressed air pollution for a major environmental NGO. They developed a site strategy, a social media package, and analytics tools to grow and track engagement. The client achieved 54,000 signups despite the global coronavirus disruption, a success for them.

"With the help of Lemonat's great job we couldn't miss our deadlines." – Engagement Campaigner, Environmental NGO

Cloudavity Consulting LTD implemented a cloud-based solution for a vegetable oil company. The company wanted to improve their overall infrastructure’s reliability through the use of cloud technology. The cloud solution currently helps facilitate more straightforward remote work.

“Cloudavity Consulting LTD is a small company, so they’re able to focus on their clients.” - CEO, Vegetable Oil Company

O'Dwyer Software developed a dashboard for a computer software firm. The firm needed an internal system that managed their CI data, which was to be used for all their projects. O'Dwyer Software helped improve their tool, which was met with positive feedback.

“They asked the right questions to make sure they were producing the right thing the first time.” - Team Lead, Computer Software Firm