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Our services

Web and mobile development

Altoros, a React development company, has extensive expertise in a range of JavaScript libraries and frameworks. We create complex web and mobile systems using React, React Native, Ionic, and other technologies, following the architecture-first approach.

Progressive web application development

Relying on the possibilities offered by progressive web apps (PWA), our development company helps to build engaging solutions that deliver a native mobile experience right from a browser. Compatible with both desktop and mobile platforms, PWAs offer unparalleled performance and combine advanced functionality of native apps.

Consulting services

React consultants and experts at our development company offer strategic advice, guidance, and technical expertise required to assess the current state of existing systems, detect limitations, provide recommendations, and spot opportunities for growth.

Full-stack React developers

Hire individual React developers or dedicated teams to serve the project needs. Take advantage of our strong expertise in front-end development, application modernization, UI/UX design, software testing, etc.

Application migration to React

Our React development company assists in migrating existing apps to a modern front-end technology stack, enabling enterprises to optimize performance, enforce security, improve maintenance, etc. Benefit from components’ reusability, scalability, and cross-platform interoperability.

Maintenance and support

As part of our React development services, Altoros offers 24/7 technical support. Our developers are always available to fix any issues you may encounter, as well as deliver new or improve existing features based on feedback.

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Hire remote React developers to extend your in-house expertise

Hire React developers at Altoros to build solutions that are both stylish and lightning-fast.

A zero-risk 2-week trial period

Pay only if you are satisfied with our work

Middle React Developer
Professional skills

Languages: JavaScript, HTML, CSS

Frameworks: React, Angular, Backbone Marionette

Tools and technologies: Webpack, Grunt, Gulp, WebStorm, Eclipse

Databases: MySQL, Firebase, IndexedDB

4+ Years of experience
Senior React Developer
Professional skills

Languages: JavaScript, TypeScript

Frameworks: React, Angular, Backbone Marionette

Tools and technologies: Angular 9, React/Redux, React Native, Webpack, Node.js

Databases: MongoDB, PostgreSQL

8+ Years of experience
React Team Lead
Professional skills

Languages: JavaScript, TypeScript

Frameworks: React, Angular, jQuery, Foundation, Bootstrap, Materialize

Tools and technologies: Webpack, Postcss, SASS, CoffeeScript

Databases: MongoDB, PostgreSQL

15+ Years of experience

Progressive web apps

A native app experience in a browser

Our React web development company builds fast, portable, and highly engaging PWAs that offer unparalleled user experience, decreased loading times, and offline operation.

Why PWA?

Discoverability and ease of sharing

PWAs are easily discovered by search engines and can be shared as a URL in just a click.

Push notifications

Reach the target audience more effectively by delivering personalized content, as well as triggering reminders about subscription expiration, upcoming events, etc.

Offline mode

Poor Internet connection or low-quality networks are not an issue anymore. PWAs perfectly work offline, enabling customers to continue browsing products or services, increasing engagement rates and stimulating higher revenues.

Always up-to-date

PWAs enable companies to deliver instant upgrades and innovative functionality without interrupting user experience.

Mobile app features

Similar to native applications, PWAs can access a device’s sensors to enable location-based services, voice control, video chat, etc., while still being instantly accessible through a browser.


PWAs provide the same satisfying operation across all your favorite devices, be it desktop, mobile, or tablet devices.

Progressive and secure

PWAs use HTTPS to bring about robust security in any browser.

Performant and easy to use

Deliver fast and smooth experience with intuitive navigation and user-friendly interface.

Why choose Altoros as a React development partner?

B2+ English level of our engineers. Average level of English of our developers is B2+.

We provide multiple time-zone teams. Our global offices with headquarters in Pleasanton (USA), branch offices in Norway and Finland, and development centers in the USA, Argentina, and Eastern Europe.

Our React developers and consultants are able to formulate and deliver non-functional requirements (security, scalability, availability, etc.) thus saving 100% on the production.

Good industry knowledge (Media & telecommunication, Logistics, finance, Oil and gas и Real estate and ect) make us able to reduce 100% of the time spent on the introduction to the domain, gives ability to jump into the project estimation asap.

Our customers speak

Since the company's foundation in 2001, Altoros has gone a long way to build a team of full-stack developers with solid technology expertise that has received a lot of positive customer testimonials.

Our customer satisfaction rate is95%according to our NPS surveys held on a 3-month basis. Learn more about our customers.




“I would definitely recommend Altoros for software development projects. It has been a pleasure working with them. There is a huge commitment from the team. The code quality and communication are top-notch. Absolutely would recommend hiring Altoros for software needs.”

Landon Swan, Co-founder of Likefolio




“The remit of the Altoros ops folks is to locate and stabilize a malfunctioning service and report it to the engineering team. If they can't stabilize it, they have permission to wake us up, but that's only happened once.”

Laurie Voss, Cofounder and COO at npm



Doubled our customer base and rolled out several new product lines

“In collaboration with our in-house team, our Altoros contractors swiftly identified and articulated critical paths against our roadmap. Altoros contractors were able to dive in from day one and meaningfully contribute to our engineering organization.”

Alex Scott, Co-founder at Revere

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Why use React?

React is mainly used to develop fast, scalable, and simple web/mobile software. React offers component reusability, virtual DOM, one-way data flow, stability, etc. However, flexibility is probably what distinguishes React from other popular JavaScript frameworks. In addition, React-based code is easier to maintain thanks to its modular structure, cutting costs and resources involved.

Hire React consultants and certified developers to start your project!

Frequently asked questions

  • What are the benefits of using ReactJS for web development?

    ReactJS is a popular JavaScript library that allows developers to build fast, scalable, and interactive user interfaces for web applications. It offers many benefits, including better performance, reusable code components, and improved developer productivity.

  • What tech stack does Altoros use for ReactJS development?

    At Altoros, we use a full-stack tech stack for ReactJS development that includes Node.js, Express.js, MongoDB, and other modern technologies to create powerful and scalable web applications.

  • How can Altoros help improve my business operations with ReactJS development?

    Altoros can help your business improve its operations by creating custom web applications using ReactJS that are tailored to your specific needs. Whether it's improving internal workflows or creating customer-facing applications, we can help you create solutions that increase efficiency, reduce costs, and improve overall performance.

  • How much does it cost to outsource ReactJS development to Altoros?

    The cost of outsourcing ReactJS development to Altoros depends on several factors, including the complexity of the project, the size of the development team needed, and the project timeline. We offer competitive rates and work closely with our clients to ensure that we deliver solutions that meet their needs while staying within their budget. Contact us for a free project estimate.

  • Do you offer a trial period if I'm not satisfied with the Ruby on Rails developer?

    Yes, we offer a zero-risk trial period of two weeks, during which you can analyze the developer's work. If you're satisfied, we can continue the engagement. If not, we'll provide you with another quality Ruby on Rails developer and a second trial.

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Alex Tsimashenka
Business Development Director
+1 (650) 419-3379