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Discover the top React.js Development Companies for Your Project
3 Companies-Rankings updated: September 03, 2026
DesignRush evaluates all React.js developers listed based on their technical expertise, past work, and client reviews. Some listings may be paid.
VerifiedVerified by the DesignRush team for authenticity and credibility.Award WinnerRecipient of a Best Design Award for outstanding work.
AI & Cloud Software Engineering
Flyaps is an AI & cloud engineering company headquartered in New York, with delivery teams in Ukraine and Poland. For 12+ years, we've helped early-stage startups scale into unicorns and modernized legacy businesses into IT leaders...
Top Services:
Software Development
AI Development
IT Services
DevOps Consulting
Cloud Consulting
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Location
New York City, New York
Number of Employees
Under 49
Average Hourly Rate
$49/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
9 Projects Listed
Flyaps Services
Software Development
AI Development
IT Services
DevOps Consulting
Cloud Consulting
Web Development
Staff Augmentation
Web Design
Business Consulting
IoT
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NetSpark IP & Telecom
MyersBiz Net
Yaana
Airbyte
Nextgen Clearing
JOIN
Relocate
Shoelace Wireless
Data sourced from the agency's DesignRush profile
Flyaps Reviews & Testimonials
Andrew Stetsenko
Founder at GlossaryTech, backed by Dice
5.0★
Python Django Review from Andrew Stetsenko
We partnered with Flyaps to build the GlossaryTech Chrome Extension from scratch, including the backend for tech terminology analysis.
The goal was to help recruiters, sales professionals, and other non-technical specialists in IT quickly understand the technical terms they encounter every day.
The first release shipped back in 2017, long before today's AI tools were available off the shelf. Flyaps built a custom tokenization layer on top of NLTK library to resolve the ambiguity problem - distinguishing "Go" the language from "go to the shop," or "Swift" the framework from the adjective, while also correctly recognizing multi-token terms like "Ruby on Rails" or "Amazon Web Services".
It was a pragmatic, precise solution that made the extension genuinely usable from day one.
The outcomes have validated that early bet. GlossaryTech now holds "Featured" status in the Chrome Web Store, has passed 25,000 downloads, and consistently serves 10,000+ weekly active users and 2,000+ daily active users. For a niche professional tool, that level of organic, sustained engagement is rare - and it traces directly back to the technical foundation Flyaps put in place.
Beyond the engineering, what stood out was how Flyaps engaged with the product itself. They contributed to architecture decisions, flagged edge cases early, and treated scope conversations with honesty rather than upsell. Communication was straightforward throughout, deadlines were met, and the codebase has held up well as we've extended the product over time.
I'd recommend Flyaps to anyone looking for a partner who combines solid engineering with genuine product thinking. They've been central to GlossaryTech's success and continue to be a team we trust.
Dariia Ryzhova
Product Manager at Nextgen
4.7★
Software Development Review from Dariia Ryzhova
Our collaboration with Flyaps has lasted for several major projects, of which I personally worked with them on two.
I am very satisfied with the level of expertise (both technical and domain), the involvement and responsibility of the teams, and the quality of delivery.
We successfully brought 2 major products to life together.
Flyaps teams have diverse specializations, so I had the opportunity to attract consultants from different fields: software developers, including high-level architects, DevOps, QA, and business analysts.
The teams have a modern technology stack and are experienced in Agile development. This allowed for smooth integration with internal teams and processes.
It is also important to note that Flyaps provides technical consulting on demand, and this was very valuable service as well. Overall, I can recommend working with Flyaps as a reliable and high-quality partner.
ТОВ ХОТНАЙТС
Review from Google
5.0★
ТОВ ХОТНАЙТС's Review Sourced from Google
Flyaps delivered outstanding results for our e-commerce store! They built a visually stunning and high-performing website that perfectly captures our brand. Since launching, our site speed has improved by over 60%, and we've seen a noticeable increase in our conversion rate. Their team's technical expertise is top-notch, and the new admin panel they created has made managing our operations so much easier. I am happy to recommend this team of professionals.
Reviews verified by DesignRush and sourced from the agency's profile
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At Linnify, we help visionary companies accelerate their digital development efforts. From growing startups to tech-driven organizations, we support you in defining, designing, building, and successfully launching on time through dedicated product teams...
Top Services:
Software Development
Web Development
AI Development
Mobile App Development
Staff Augmentation
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Location
Cluj-Napoca, Romania
Number of Employees
Under 49
Minimal Budget
$25,000 - $50,000
Portfolios Count
4 Projects Listed
Linnify Services
Software Development
Web Development
AI Development
Mobile App Development
Staff Augmentation
Web Design
UI/UX Design
Software Testing
Cloud Consulting
Market Research
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Readability
drd
Joyscore
Stailer
NEWtritionIQ
Medefine
Data sourced from the agency's DesignRush profile
Linnify Reviews & Testimonials
GABRIEL SINCRAIAN
Review from Google
5.0★
GABRIEL SINCRAIAN's Review Sourced from Google
I worked with a few freelancers before and only had headaches. Since I discovered Linnify, everything has been going smoothly. They are professional, deliver exactly what they promise, and the app works flawlessly. Everyone is happy. I recommend!
Camil Moldoveanu
Review from Google
5.0★
Camil Moldoveanu's Review Sourced from Google
Linnify has been a reliable partner in our software development journey, providing excellent quality and innovative solutions. This is why we built this collaboration based on expertise trust. Their development team is knowledgeable and attentive, enhancing our user experience significantly. We recommend Linnify to anyone looking for one of the best product development companies in Cluj.
Paul Oarga
Review from Google
5.0★
Paul Oarga's Review Sourced from Google
Great solutions, incredible team and enviable work ethic. Highly recommend them for any tech product, branding or idea you want to boost into reality.
Reviews verified by DesignRush and sourced from the agency's profile
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At Cinnova, we treat your business as our own, combining design-thinking, engineering, and business acumen to solve complex challenges. Our flexible engagement models ensure tailored solutions that drive growth and efficiency...
Top Services:
Web Development
Mobile App Development
Software Development
UI/UX Design
Web Design
Show more
Location
Cincinnati, Ohio
Number of Employees
100 - 249
Minimal Budget
$25,000 - $50,000
Cinnova Technologies LLC Services
Web Development
Mobile App Development
Software Development
UI/UX Design
Web Design
SEO
Big Data Analytics
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
University of Cincinnati
HP
ProCamps Worldwide
Data sourced from the agency's DesignRush profile
Cinnova Technologies LLC Reviews & Testimonials
Kyle Neely
Review from Google
1.0★
Kyle Neely's Review Sourced from Google
Sketchy method of cold calling to get leads by claiming they talked to someone else at my org that they did not in fact talk to. Called on my personal cell phone. Would not do business with them if the engage this this type of misleading lead generation.
First
Review from Google
1.0★
First's Review Sourced from Google
Sketchy people would be a polite way to put it.
Kept sending advertisements to a general email box, I responded asking to unsubscribe, they started sending those advertisements to the email from which I responded.
I wouldn't trust these people to do anything.
Reviews verified by DesignRush and sourced from the agency's profile
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Frequently Asked Questions About React.js Developers
What are the typical React.js development services?
React.js development companies provide end-to-end services that span the entire software development lifecycle, from strategy and design to development and launch. Core services include:
React.js consulting: Guiding businesses on building and optimizing their React applications through component selection, architecture design, and roadmap development.
Custom React.js development: Engineering applications tailored to a business's specific needs, goals, and existing IT infrastructure, and typically include web design and web development.
UI/UX design: Delivering intuitive interfaces, clear user flows, and standardized design systems that align with a brand and its target users.
API integration: Connecting the React frontend to back-end systems, third-party tools, and external data sources to support seamless functionality and user experiences.
Platform migration: Rebuilding or migrating legacy frontends to React to improve maintainability, usability, and performance, often with minimal disruption.
Maintenance and support: Providing post-launch monitoring, debugging, performance optimization, and technical support.
Many React.js developers also offer specialized expertise, including SaaS products, web application development, customer portals, eCommerce solutions, and minimum viable products (MVPs).
Some React.js development companies may also offer digital marketing services, such as content marketing, search engine optimization (SEO), and branding.
What is the difference between React and React Native?
The main difference is that React is used to build web user interfaces, while React Native is for developing mobile applications. Here are more details on their differences:
React
React Native
Primary platforms
Websites, web applications, and single-page applications
iOS and Android mobile apps
Tech base
JavaScript/TypeScript with React for web UI
JavaScript/TypeScript with React, rendered through native UI components
Best for
Businesses building browser-based products, customer portals, dashboards, eCommerce sites, and SEO-focused web experiences
Businesses building cross-platform mobile apps for both iOS and Android with shared logic and accelerated development time
Examples
Facebook, Instagram, Netflix web
Microsoft Teams and Shopify
What are the typical React developer tools?
React.js developers typically choose their stack based on a client's product goals, technical requirements, and existing systems. For example, they may use Formik for complex forms and validation, Storybook for developing and testing components in isolation, and MUI for production-ready UI components and design systems.
Back-end options: Express, Laravel, Rails, ASP.NET
Databases and infrastructure: PostgreSQL, SQL Server, Redis
Can React.js developers build AI-powered features into web applications?
Yes. A React.js developer can build AI-powered features into a web application by integrating model APIs, SDKs, and AI workflows into the product experience.
Depending on your goals, this may include providers such as Google Gemini or Anthropic Claude, along with React developer tools, like Vercel's AI SDK for building chat, search, recommendation, and automation experiences in React-based apps.
These companies can help you build features such as:
Personalized content and recommendations based on user behavior
Chatbots and virtual assistants for real-time customer support
Smart search with autocomplete, semantic search, and related-result suggestions
AI-assisted dashboards that generate summaries, reports, forecasts, and insights from business data
When should you hire a React.js development company instead of using an in-house team?
The right choice depends on your project goals, internal capacity, timeline, and need for control. You may want to hire a React.js development company if:
You have a short-term or time-sensitive project, but your internal team is already at capacity.
You do not have the specialized expertise required for the project, such as React architecture, performance optimization, migration, or AI feature integration.
You need to accelerate delivery without hiring and onboarding a full internal team.
You want access to a broader range of skills, such as design, front-end engineering, QA, and post-launch support, through a single external partner.
You need temporary support to fill skill gaps or expand delivery capacity.
Use an in-house team when:
The application is a core business product that requires long-term ownership and deep institutional knowledge.
The project involves highly sensitive systems, proprietary logic, or strict security and compliance requirements.
You need close day-to-day collaboration, faster internal feedback loops, and direct control over priorities.
The product requires continuous iteration and alignment with multiple internal teams over time.