Top React Developers in the United States

Web Dev, Email & SMS Marketing for Performance Mktg Agency

The team at Mattered is always professional and timely and they produce extremely high-quality work. In addition to that, they are flexible and able to adapt to the needs of each client which makes them stand out from the crowd. Their approach is highly tailored and they serve clients in a wide variety of ways.

Web Development & Design for Email Database Platform

Mattered’s project management was exemplary throughout the engagement. They consistently delivered items on time and were highly responsive to our needs. Their team maintained clear and open communication, providing regular updates and promptly addressing any questions or concerns.

Mobile App Development for Color Palette Platform

The high quality of the workmanship along with the relationship they maintained with our company, came through as the finished product was a complete success! I found their honest enthusiasm about the product as well as the dedication to create a product of the highest quality, was evident at all times of our working together.

App Development for University Department

Within a single month, HubSpire delivered a phenomenal app. HubSpire consistently produces high-quality work at a fast pace and a reasonable price. Their customer service efforts are also notable.

Cross-Platform iOS & Android App Dev for Web Designer

They meet deadlines and create a quality product with very few bugs. Of the few bugs that appeared, each one was fixed immediately. It was a high-quality product at a reasonable price, delivered on schedule.

Mobile App Development & Design for Nonprofit

The Bronx Walk of Fame App is still in development but is already ahead of schedule, demonstrating strong progress toward its goals. Key measurable outcomes so far include the successful completion of core functionalities, such as the interactive map, honoree profiles, and GPS-enabled walking tour, all of which have been tested and refined for user experience. The app’s design and development phases have remained on track, with Hubspire delivering milestones earlier than anticipated. While the app is not yet fully launched, its early completion of critical components positions it well for a strong public debut, ensuring a high-quality, engaging experience upon release.

Mobile App Development & Design for Nonprofit

Hubspire’s project management has been exceptional throughout the development of the Bronx Walk of Fame App. Their team has consistently delivered milestones ahead of schedule, demonstrating a strong commitment to efficiency and quality. From the initial planning phase to the execution of key features, they have maintained clear communication, proactive problem-solving, and a highly organized workflow. Their ability to anticipate challenges and offer solutions has kept the project running smoothly, ensuring that development stays on track.

Web Development for IT Company

This was a collaborative experience, which made it easy to communicate and provided us frequent updates. We had both in-person meetings and phone calls. Everything was delivered on time and we received ample warning if a deadline wasn't going to be met.

Web Development for a Marketing Agency

The team is quick and responsive, getting back to us within a day or so. We mainly communicate via email. Having them stateside made the engagement easier and communication much smoother.

Subscription Platform & Web Dev for Presentation Software Co

They did a great job responding to our needs, principals at the company got involved to meet our aggressive deadline. They have good project management and are organized.

Web App Design & Dev for Leadership Consultancy Group

Black Airplane has led the project better than other partners. They use ClickUp for ticketing and tracking the things that need to get done. They’ve been incredibly organized, and we’ve found it helpful.

Custom Software Development for Solar Services Provider

Project management has been good and all fronts. Their communication is excellent; Tonic has a system for advancing projects that’s efficient and easy to follow for people who aren’t tech-savvy. Moreover, Tonic has delivered all the deadlines on time except when we’ve changed directions or had unexpected issues.

Web Dev & Design for Soccer Club

The most impressive thing is that they are all the time available to solve any problem. Also this is a very good and smart team with a responsible owner. We are glad to have them with us.

Website Development for IT Services Company

The company owner was the most friendly and capable man who was 24/7 available in case of emergency.

Drupal Dev For Magazine Publishing Company

Their developers are flexible and deeply integrated into our processes, but also offer suggestions based on their experiences. They're involved in our Slack channels, attend all of our stand-ups, and hop on architecture meetings. They serve in an augmentation capacity, so we essentially view them as team members.

Web Dev & Content Management for AI Consultancy

Delivered everything on time, and they communicated everything clearly in case any challenges arised. Invowork's good quality work and timely delivery were impressive.

Custom Software Development for AI-Powered Finance Services Firm

They were available nearly 24/7, and they always delivered on time. They are highly supportive and genuinely passionate about our project. They work tirelessly to bring our vision to life.

Dev Partner for Water Testing App

We communicate over Jira, Confluence, Slack, or email. They’re very invested in our immediate and future roadmap. The founder has been close to our business and goals since day one, and they hire competent, helpful people that are always available.

Web Platform Dev for Housing Marketplace

Their communication is very solid. Vlad is an outstanding gentleman, and all the engineers we’re working with are great communicators in English. They have their own channel within our Slack and vice versa. Our company uses Zoom for remote conferencing. The developers are always available when we need them, and we make ourselves available for their questions. They’re very responsive in making development processes as high-quality as possible.

Platform Development for Staffing Tech Firm

We have daily standups with their team and the project manager helps streamline communication. All their engineers are able to communicate really well. They’re responsive and they understand the value of time, which makes them good at following up and not waiting on things. That’s important, especially with the time difference.

Web Dev & Design for Catholic Preparatory School

We really appreciate that we got to work very closely with the senior people at AKOS. The change in working with AKOS after working with a bigger company was so eye-opening for us. They are just so much more responsive and their expertise really shined through their work. The size of a company doesn’t necessarily correlate with their expertise, professionalism, or customer service, and I think that that’s something that you should consider in your evaluation process.

User Research for Fitness Education Provider

Nilo's project management was top-tier. She was very communicative and transparent with what she needed from us and making sure that she was providing everything we needed. She was very professional during all of our meetings and provided great feedback as she was going through her study sessions.

User Feedback Gathering for Virtual Fitting Tech Company

The communication and project management tools used were great for project transparency and progress tracking. Zeila's background and experience doing usability and UI/UX research was impressive and it was extremely valuable for my team to get unbiased feedback after we've looked at the tech everyday for the last couple of years.

BigCommerce Migration for Grocery Delivery Firm

The team was organized and prepared in addition to providing the executive team with seamless communication and full transparency during the process, something we had lacked in prior relationships. I would highly recommend the REEA Global team.

AI Dev for Market Private Equity FIrm

REEA Global demonstrated exceptional transparency and creativity in showcasing their capabilities. They delivered high-quality results on time and in a cost-effective manner, supported by a dedicated team that was genuinely invested in the projects and built strong, positive relationships with our portfolio company leaders.

Website Development for Infrastructure Advisory Firm

Project management is really good. I can talk to the designer, the account manager, and the billing office, all depending on what I need. They were collaborative from start to finish, providing their suggestions. They maintain a personal touch. Web developers can sometimes be difficult to brainstorm with, but their team was fabulous to work with.

iOS App Development for Product Company

Their team was easy to work with, diligent, and up-to-speed on the latest technology. They were absolutely great. Their communication skills were fantastic, and their team was professional. They listened, paid attention, and made needed changes.

Branding for Talent Acquisition Company

Their process allows them to develop a well-rounded understanding of the company they’re working with. They researched our target customers and the work environment, picking up on details that even I didn’t see.

Custom Software Development for IoT Network Solutions Firm

Describe their project management. Did they deliver items on time? How did they respond to your needs? Strong, proactive communication. Highly flexable and adaptive to needs. Highly responsive to emergent work/bugs/issues. Process focussed so mistakes are not repeated.

Dev for Creative Marketing Agency

Project management was very impressive. They are extremely creative and capable and they are particularly good to work with, as they are adaptive and forward thinking. In addition, they always strive to work with us through any difficult situations that may arise.

Custom Software Design & Dev for B2B Software Company

A few things come to mind. If we look at the results of where we are, we have worked very effectively and efficiently to get to a really good outcome, and that’s phenomenal. We’ve moved very quickly and on a reasonable budget, and Rapptr has really helped us do that.

Updated Website for Department of State Government

They're very responsive to our requests, very knowledgeable in the subject matter, and easy to work with.

Custom Software Development for Real Estate Company

Their communication and speed of delivery were impressive. As far as pricing, they gave us a very fair quote, which was far less than the quotes we received from bigger firms.

Web Design & Dev for Women's Advocacy Organization

Their team was responsive, detail-oriented, creative, and great project managers.

Website Redesign for International School

Dworkz was incredibly responsive and patient throughout the project. They did a great job of gathering information up front, and consistently delivered prototypes, designs, and demos on time and beyond expectations. Communication was steady, friendly, and thorough. They were upfront about any items beyond our initial agreement and worked with us on both timelines and features with flexibility and professionalism.

Mobile App & Web Development for Healthcare Firm

D.Workz Interactive is an excellent firm with a fresh, unique approach to design that’s both professional and innovative. They have a deep understanding of the continuum from concept, to development, all the way to user experience. We treat them as a true partner.

Cloud Platform Development for Contract Negotiation Platform

They are committed to their client's success, that's why we selected them and why we continue working with them. They're extremely professional and produce high-quality work. On a side note, they are very nice people to work with. Our experience with them was superb.

Application Development for Huggies Diapers

Bottle Rocket has the rigor. In other words, when they started from design and mapping out requirements and making sure that they understood our consumer, we had a fantastic emergence session before we even talked about apps, and capabilities, and how we would do anything. They wanted to understand. They wanted to get inside of the mind of the Huggies mom. That speaks volumes about what we tasked them with.

Customer Self-Service Web Dev for Utilities Company

Firstly, Sparkbox's technical skills are unrivaled. I am a fan of their talent, and of the way in which Sparkbox's team can build responsive and beautiful websites. They can create a refined and elegant UI [user interface] experience.

Custom Software Dev for Cosmetic Company

We have a system that has withstood the test of time. The code is high quality. To the point that after 8 years we have not had any issue that has disrupted our business. Our clinics have transacted over 500,000 treatments during that time, with huge amounts of data being spun off with each treatment.

Web Dev & Email Marketing for Yogurt Company

They deliver high-quality work efficiently and are always willing to answer questions outside the scope of work. Whenever we ask a question that falls outside their expertise, they help us with research and provide feedback, which is nice. They also work well with our other agency partners.

Video Production & Branding for Consulting & Training Org

The best evidence of JLOOP's success is that our clients continue to use the videos years later, showing their work's value and quality. They're also highly professional, and our clients often comment about how JLOOP's work makes their brands look great. Moreover, they have a very consistent staff; I value working with them because I can develop an understanding and relationship with the team.

Web Dev for Real Estate PR Company

Jay is a great leader and business person. He's developed a strong culture and JLOOP's team is very engaged and has a long tenure with the company. That makes a big impact on my experience as a client, and I love supporting a team of good people who do exceptional work!

Staff Augmentation for IT Services & Consulting Company

Moreover, JLOOP has our senior leadership's sponsorship because executives understand what they bring to the table, which is a testament to the quality of their work and the relationship we've built. We're so busy that it's hard to find resources for internal engagements, and they've been able to bring a ton of value to the job that we do.

E-Commerce App Development for Dietary Supplement Firm

It is rare that you can find technical expertise in a team that is as good with humans as they are with code. Their intelligence and humor were much appreciated at all stages.

WordPress & Shopify Integration for Software Company

Sunrise Integration’s attitude and confidence distinguished them from other providers. On top of that, they knew the technologies that we didn’t. They were great with PHP and all the other internet technologies, and they knew internet-based servers very well.

Website Migration & Optimization for Education Institution

They were prompt, thorough, friendly, and professional! I am sure they juggle many other projects at once, but when they were meeting with me, they made me feel like I am the only customer they are working with. They are experts in their fields, but the additional personal touch, going the extra mile, and prompt responses and availability make them shine above others.

Web Dev & Design for Leadership Consulting Firm

Classic City had an exceptional balance between being highly professional and personable. Their team was extremely professional, smart, and efficient, and they were also friendly and excited about us and what we were doing. Moreover, I really appreciated their consultant role. They didn’t just take our ideas and run with them; they also helped us think about usability and gave us great advice, making us reconsider our ideas.

Rebranding & Web Design for Church

They have a personal touch that really shows in their work. Everyone on their team cares about their customers and achieving their goals. No, I just hope they keep doing what they’re doing.

WooCommerce Dev for BasePlate Manufacturer

They're personable and ethical, and I can't say enough about that. It means a lot to me on a day-to-day work relationship. They're always straight and upfront with you, and that's rare in business. They were also really good at addressing our issues from their standpoint, as the designers and developers, and then from our standpoint, as the company owners.

WordPress & PHP Designs Partnership for Software Company

I appreciate their personality and enjoy interacting with them. They’re just good, genuine people who really love what they do. Well-spoken and approachable, they know how to talk to people in layman’s terms without making them feel ignorant.

B2B Marketplace Dev for Made-On-Demand Business

During the first month, we had daily standups and weekly sprints as the core of the stack was being built. Then, it moved to a more standard 2-week sprint schedule. We still maintained a daily standup that allowed for open communication amongst the entire team. Their ability to quickly flex with a project to meet timelines and to adjust resources as needed was impressive.

UX/UI Designs for E-Commerce Startup

Coding Sans is extremely efficient in managing the workflow. Meetings are always on time, communication is excellent, and there is plenty of opportunity for collaboration & feedback.

Figma-Based MVP Design for E-Commerce Company

My two main success metrics were whether or not Coding Sans was on time and on budget. The team was good on both of those metrics. They were always on time and delivered exactly what they said they would deliver. If you’re a startup trying to launch an MVP, Coding Sans is a great resource that can provide high-quality work.

Web Dev & Design for Car Cleaning Service

The delivery was very quick and efficient. The whole project took 3 months from initial ideation (product design) until successful launch. We had daily touchpoints with their team to see their progress and discuss any questions they might have had.

Mobile App Dev for Video-Messaging Service Partner

Most importantly, they respected our deadlines. We trusted Coding Sans because they’re really keen on scheduling. If we ran into any deadline or development issues, they never overcharged us. They are really dependable.

Interactive Database & Microsite Dev for Research Org

Black Antelope’s project management is excellent. They met deadlines and delivered each phase of the project on time, and we were able to launch the project according to our deadline. They were also patient with our team as there were times when we needed additional time to review or discuss certain aspects of the project.

Web Design & Development for Academic Research Institute

Black Antelope had incredibly competent project management. They kept the project on schedule, and the tools they used to collaborate made it very easy to give quick feedback on different parts of the site. They responded with lightning speed to all of our feedback, and we hit our final design with minimal changes.

Web Dev & Design for Climate Science Organization

It was really easy to manage the process virtually with them because they had a lot of great systems in place. We used Basecamp to manage the workflow and InVision to share, comment, and approve design concepts. We also did web conferences for longer discussions and they were available by phone or email if something more timely came up.

Web Development for Research Institute

Project management has been great. I appreciate how Black Antelope communicates. We used to send them tasks by email, but they transitioned to Basecamp. As an online tool, it helps facilitate interactions between the client and the vendor.

Web Design & Development for Dog Breeder Co

Web Design Glory’s professional service, customer care, price & deliver are amazing values.

Web Design & Development for Pet Services Company

Web Design Glory is an excellent company! Their service is top-notch, and the pricing for every service is very reasonable and easy to afford. Highly recommended! The pricing for every service is very reasonable and easy to afford.

Recruiting for Financial Research Platform

We have flexible deadlines, but they find the developers for the time we need them. They resolve issues very quickly and ensure they’re meeting our needs. The team is willing to help with problems that come up as quickly as possible.

Web Design & Dev for Electrical Wire & Cable Distributor