400+ experienced team players

Hire React.JS Developers

Empower your projects with swift and scalable solutions by leveraging the expertise of some of the world’s top React.JS developers.

Powering Innovations at 350+ Companies Worldwide

Try Before You Buy: 100% Risk-Free Trial

Our objective is to streamline your development process. Therefore, we offer the opportunity to trial our candidates to ensure technical and cultural fit at no financial risk to you.

Only Certified Staff

All developers, engineers, project managers, and technology experts are Sphere’s full-time employees. This enables us to swiftly provide you with vetted talent—in days, not weeks.

Global Talent Pool at Your Fingertips

Our extensive pool of engineers and developers stands ready to bolster your team and tackle even the most daunting challenges. Please meet some of our selected team members below.

Nikita
Nikita Software engineer
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Nikita is software engineer with over 7 years of application design and development experience. Actively participated in various projects based on cutting-edge technology stacks. Experienced in working both as a solo developer and as part of a team, including highly distributed teams around the world. Able to learn new technologies rapidly. Passionate about software quality, test driven development and performance optimizations.

TECHNOLOGIES
Programming Languages/ TechnologiesJavaScriptTypeScriptNode.jsPythonFrameworksReactReact NativeVueExpressKoaGraphQlApollomongooseKubernetesDatabasesMySQLMongoDBApplication/Web ServersNginxAWSFirebaseDigitalOceanHeroku
PROJECT HIGHLIGHTS Led the integration of the front-end application with CMS Contentful
Developed and maintained reusable, adaptive components in Storybook, ensuring high reusability and consistency across the application
Managed dev/uat/prod releases, overseeing deployment processes and ensuring smooth transitions between environments
Played a key role in team development by onboarding and mentoring new members, enhancing team capabilities and knowledge base
Efficiently managed project timelines and deliverables through accurate task estimation and daily progress updates, ensuring project milestones were met on schedule
Hayk
Hayk Full-Stack Developer
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Hayk is an experienced full stack developer, specializing in Node.js and proficient in JavaScript, MySQL, PHP, and associated frameworks, recognized for reliability, positive collaboration, and effective communication in the information technology and services industry.

TECHNOLOGIES
Programming Languages/TechnologiesJavascriptTypeScriptPHPFrameworksNode.JSLaravelReact.JSDatabasesMySQLPostgreSQLMongoDB
PROJECT HIGHLIGHTS Produced clean, optimized code for core product software and databases as a Frontend/Full Stack Developer
Enhanced functionality and usability in a private membership network project using Nest.js, Next.js, GraphQL, Docker, PostgreSQL, and AWS
Led the design and implementation of a communication facilitation project, resolving VM monitoring challenges with technologies like Nest.js, Docker, AWS Lambda, and Redis
Contributed to developing a meditation audio recording system (Limitless), creating backend functionality using Nest.js, Docker, PostgreSQL, Google Cloud, and Firebase
Denys
Denys Full Stack Developer
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Results-driven full-stack developer with 10+years of experience, focusing on React.js and Node.js. Skilled in creating responsive, user-friendly web applications and implementing innovative solutions to complex problems.

TECHNOLOGIES
Programming Languages/ TechnologiesJavaScriptNode.jsHTMLCSSTypescriptFrameworksReact.jsReduxCoffeeScriptAngular 2MethodologiesAgileScrumKanbanWaterfallFunctional programming
PROJECT HIGHLIGHTS Development Frontend part of AI powered platform, that helps ITOps teams prevent, manage, and resolve IT incidents with intelligent automation.
Aleksandr
Aleksandr Software Developer
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Aleksandr is a seasoned software developer with more than 8 years of experience, specializing in Ruby on Rails, Golang and skilled in React. He is adept at executing seamless deployments, handling large-scale data migrations, and crafting custom technology solutions for intricate problems. With exceptional attention to detail and a strong commitment to excellence.

TECHNOLOGIES
Programming Languages/TechnologiesRuby on RailsJavascriptPHPPerlSQLBashGolangJavaCoffeeScriptHTMLCSSPythonFrameworksRuby on RailsAngularRDBMSDB2PostgreSQLMySQLSQLiteApplication/Web ServersApachePumaWebrickDevelopment ToolsDockerKubernetesAWSGitlab CI/CDGitRedmineVMware vSphereRed Hat VirtualizationTesting ToolsRSpecCucumberMethodologiesAgileScrumXPPair ProgrammingTest Driven, Feature Driven, Behaviour Driven DevelopmentWaterfall
PROJECT HIGHLIGHTS Successfully designed and developed backend application logic, with a focus on efficient API design and request optimization
Skilled in designing and developing frontend solutions, utilizing CoffeeScript and JQuery to create interactive user interfaces
Plays a key role in defining the main functionality of the application, ensuring alignment with project objectives and user needs
Demonstrated expertise in creating applications from scratch, showcasing an ability to conceptualize and execute complex projects
Implemented proof of concepts (PoC) successfully, validating the feasibility and potential of many new ideas and approaches
Igor
Igor Frontend Developer
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Igor is a frontend developer with over 7 years of experience. He has advanced proficiency in React.js, including in-depth knowledge of component-based architecture, state management, and advanced UI/UX implementation, enabling them to build robust and interactive user interfaces for web applications. Web applications development with HTML5/CSS3/JS (10+ years).

TECHNOLOGIES
Programming Languages/ TechnologiesJavaScriptNode.jsHTMLCSSReduxFrameworksReactJSTypescriptSvelteAngular 1.xReact NativeDatabasesMySQLMS SQLMongoDBMethodologiesAgileScrumKanbanWaterfallFunctional programming
PROJECT HIGHLIGHTS Frontend application development
UI Kit development and integration
Communication with the customer
Created an interface using internal React tools
Implemented app modifications
Created regular updates
Arman
Arman Frontend Developer
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Experienced frontend developer with a proven track record in information technology. Proficient in JavaScript and React/Redux, adept at both independent project management and collaborative teamwork.

TECHNOLOGIES
Programming Languages/TechnologiesJavaScriptTypeScriptHTML5GitFrameworksReact.JSRedux (toolkit)Next.jsMethodologiesWebpack
PROJECT HIGHLIGHTS Led JavaScript solutions development for responsive web applications as a Senior Frontend Developer
Significantly contributed to projects as a Senior Software Engineer, utilizing React.js, Redux-toolkit, HighCharts, and Webpack
Achieved improved page loading speeds and timely project delivery as a Frontend Developer at EPAM Systems, leveraging technologies like React.js, Redux, Next.js, Recoil, TypeScript, and JSS
Garnik
Garnik Frontend Developer
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Frontend developer with 5 years of experience, adept in React.JS, JavaScript, and TypeScript, known for optimizing applications and leading teams to enhance user experiences.

TECHNOLOGIES
Programming Languages/technologiesJavaScriptTypeScriptHTMLCSS/LessFrameworksReact.JSReact-Redux/SagaReact-queryReact-RouterReact-i18nextElectron-forgeElectron-forgeAnt DesignMaterialUIStyledComponentsJestCypress
PROJECT HIGHLIGHTS Developed reusable code and optimized applications for speed and scalability as a Senior Front-End Developer using React.js, JavaScript, and TypeScript
Led a team of seven as a Lead Software Engineer at EPAM, refactoring components, integrating accessibility features, and migrating to a new design system with JavaScript and React
Innovatively served as a Frontend Team Lead at EarlyOne, refactoring web pages, creating a library-free page builder, and leading a team of five using JavaScript and React.js
Established expertise as a ReactJS Developer at Prisma Gaming, creating a management tool and ecommerce web app from scratch with JavaScript and React.js.

Engagement Models Tailored to Your Business

Staff Augmentation: This model offers custom teams equipped with specialized skills, operating under the direct management and integration within our clients’ in-house teams. It ensures you maintain complete control over the project delivery process.

Managed Teams: Obtain a fully equipped, organized, and ready-to-work software development team with the necessary tech stack. This team will be dedicated to your business and managed by Sphere, ensuring seamless integration and productivity.

Scope-based Initiatives: Define your business or product objectives and accelerate development with a set timeline, scope and budget using our dedicated in-house teams standing at the ready.

EOR/CM Services: Streamline the process of hiring employees in new countries without the need to establish a legal entity, by leveraging Sphere as your Employer of Record.

Our React Services

Custom Web Application Development

Enhance your digital presence with custom-designed web applications that combine aesthetic appeal with high functionality. Our React.js development leverages a component-based architecture to deliver dynamic, responsive, and intuitive single-page applications tailored specifically to your business needs.

UI/UX Design and Implementation

Transform your user interfaces into engaging, seamless web experiences with our React.js expertise. We focus on efficient rendering and a modular approach to ensure interactive and visually appealing designs that captivate and retain your audience.

E-commerce Platform Development

Build a robust e-commerce platform with React.js that ensures a smooth and responsive shopping experience from start to finish. We specialize in optimizing every touchpoint of the customer journey, enhancing load times, and ensuring a mobile-friendly interface.

Real-Time Application Development

Stay ahead with real-time applications, such as instant messaging, live content updates, and interactive dashboards. Our React.js solutions provide high performance and immediate user feedback, critical for maintaining engagement in fast-paced environments.

Enterprise Web Solutions

Deploy scalable, secure, and easily manageable enterprise web solutions with our React.js development services. Perfect for handling complex architectures and integrating seamlessly with existing systems, our solutions help you streamline operations and boost efficiency at the enterprise level.

Maintenance and Upgrades

Keep your React.js applications performing optimally with our comprehensive maintenance and upgrade services. We ensure your systems are up-to-date with the latest features and security measures, adapting seamlessly to new challenges and technological advancements.

Sphere’s Strategic Staffing Process

With over 19 years of successful track record in staff augmentation, Sphere offers a straightforward yet effective formula for success. We boast an extensive in-house talent network of more than 400 full-time engineering and development professionals worldwide, ready to embark on your project within 4-7 days.

Discovery Call

Consult with our expert team to identify and align on your objectives, technical requirements, and business needs

Hand-Selection

Obtain an initial list of candidates professionally matched to your project, ready for interview.

Confirmation

Confirm your new team members or adjust the selection criteria.

Onboarding

Onboard professionals you prefer to achieve your business goals.

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Ready to interview your next developer? Speak to our experts

Why Choose Sphere’s Talent?

Every project is unique, and we understand the importance of finding the right professional with the appropriate technological and cultural background, as well as an understanding of the technologies and methodologies used. That’s exactly what we do — match your tasks with the ideal candidates to make onboarding as swift as possible.

Furthermore, if you are not satisfied with the selected candidates, you can easily swap your resources.

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Join 350+ Satisfied Clients

Sphere engineers possess experience across dozens of industries and have a deep understanding of specific business requirements. But why take our word for it? Allow us to share successful case studies with you.

Gett

Gett aimed to expand its B2B offerings in the on-demand mobility space and needed to improve its initial slow and non-scalable system. In partnership with Sphere, they developed a microservices architecture using modern technologies like Golang, PostgreSQL, and Redis, resulting in a high-performance, scalable platform. This transformation allowed Gett to efficiently enter new markets and scale its operations.

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CreditNinja

CreditNinja decided to create an in-house system for processing and purchasing leads to better manage and reduce their underwriting and marketing costs. This system provided their data and marketing teams with significant control and adaptability in handling leads. By partnering with Sphere, CreditNinja developed a customized platform that not only cut customer acquisition costs by four times but also reduced underwriting expenses by 75% and marketing costs by 50%.

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Proclivity Systems

Proclivity Systems is a leading, smart advertising platform that connects brands to healthcare professionals and patients. We worked with Proclivity Systems to help create their core LayerRx platform; utilizing our comprehensive analytics and engineering experience.

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Accelerate Your Project Delivery

Streamline your development process and focus on what matters most. With Sphere, integrate expert developers into your team in just 4 days and start scaling efficiently.

React.JS Frequently Asked Questions

React.JS, often referred to as React, is an open-source JavaScript library developed by Facebook for building user interfaces (UIs) and single-page applications (SPAs). It enables developers to create reusable UI components that can efficiently update and render when data changes.

  • Component-Based: React.JS follows a component-based architecture, making it easier to manage and reuse UI elements.
  • Virtual DOM: React.JS utilizes a virtual DOM, which enhances performance by minimizing the need for direct manipulation of the actual DOM.
  • Declarative Syntax: With a declarative approach, developers describe how the UI should look based on the application state, simplifying code readability and maintenance.
  • Ecosystem and Community: React.JS boasts a vast ecosystem of libraries, tools, and community support, making it easier to find solutions and resources for development challenges.

Technical proficiency is typically assessed through a combination of coding tests, portfolio reviews, and technical interviews. Coding tests might involve specific Golang programming challenges, while portfolio reviews provide insights into the complexity and scale of projects the developer has worked on. Technical interviews can explore depth of understanding in React.JS, problem-solving skills, and familiarity with application development best practices.

Yes, React.js is well-suited for large-scale applications due to its scalability and performance optimizations. Its component-based architecture facilitates code organization and maintenance, while features like the virtual DOM help improve rendering efficiency, even with complex UIs.

Some commonly used tools and libraries in the React.js ecosystem include:

  • React Router: For handling routing in SPAs.
  • Redux: A predictable state container for managing application state.
  • Webpack: A module bundler for bundling JavaScript files and other assets.
  • Babel: A JavaScript compiler that enables the use of modern JavaScript syntax and features.
  • ESLint: A static code analysis tool for identifying and fixing code errors and enforcing coding standards.

Yes, React Native, a framework built on top of React.JS, allows developers to build cross-platform mobile applications using React.JS and native components. React Native enables code reuse across iOS and Android platforms, speeding up the development process and reducing maintenance efforts.