Our clients include 150 Global Brands, Silicon Valley Founders
React.js Development Services
Capital Numbers is a leading custom company providing interactive React.js development services to create modern, interactive, and reliable user interfaces across all business domains. Our Developers require extremely low supervision and each one of our Developer is proficient enough to work remotely and contribute as an active member of your development process.
React.js Team Augmentation
Hire dedicated React.js experts and engineers from us and save over 50% on development costs. The developers become part of your team and work directly under your control.
PWA & SPA Development
Whether you want to build a Progressive Web App (PWA) or a Single Page Application (SPA), we know how to give you an edge through responsive designs that resonate with your users.
Test Driven Development
Our developers use Jest and Enzyme to write test cases to ensure the correctness of React codebase. This ensures your React app is stable and error-free.
Architecture & Design
Our React.js architects create state-of-the-art web interfaces that tick all the right boxes regarding a positive user journey and experience.
DevOps for React.js
Do you need help setup CI/CD pipeline for your React.js based applications? Our seasoned DevOps have expertise in working with all major cloud platforms such as AWS, Azure, and GCP.
React Web Development We develop tailor-made React Web Applications for all the niches. We have delivered applications for several industries, including healthcare, e-commerce, manufacturing, retail, travel, finance, and education.
Testing & QA
Partner with us to ensure that your UI/UX is compliant and secure. Also, compete with confidence as we bring your React.js architecture up to date and speed.
Maintenance & Support
Have a legacy React.js app? We’re here to help. From debugging and maintenance to feature development and DevOps, we'll tailor a development plan to meet your needs.
Migrate to React.js
Whether you have an application running in any other framework or built using a template system, we can help you migrate your app to React. Our teams can also assist with the creation of APIs as needed.
We also let you scale on-demand, grow your team during high-volume periods, and ramp down team size when needed. In short, we make it easy for you at every step like a true partner on whom you can rely.
By partnering with Capital Numbers, you'll get access to our 700+ in-house developers and will be able to fill any role immediately.
You’re in control
You get a dedicated React.js development team entirely under your control but without the administrative issues and hassles. You control your team’s work, and all processes are fully transparent, so you know exactly who’s doing what, when, and why.
Work with Experts
Our HR specialists, office managers, and system administrators make sure your development team’s working conditions are perfect.
Corporate outings, regular training, engagement activities, career counseling, grievance handling – our HR veterans will sure every developer you hire with us stays motivated to try hard to make you successful.
Payroll, taxes, benefits, sick days, and vacations for your team – we’ve got you covered.
50% Cost reduction
Our clients have been able to save up to 50% in labor costs.
4.8/5 Rating on Clutch
Our clients highlight our ability to build great personal relationships with them, except for the excellent code quality.
75% of the company – senior and middle developers
We invest in attracting the best talent from the market. We hire only strong middle and senior React.js developers and no juniors.
ISO 27001 Information Security
Capital Numbers adheres to ISO 27001 certified information security standards to ensure that your IP and investment are protected.
Tech Stack: Node.js, React.js, Socket.IO, Twilio, NoSQL, Microsoft Azure
This interactive web app lets users avail discounts on their food deliveries. Users need to generate food delivery coupons, copy-paste them in this web app, and win in-app games to get added discounts on their online orders.
This is a cutting-edge candidate screening portal that connects the recruiters with the best fit candidate matches from across the globe. It helps employers find the most qualified full-time, part-time, on-site, flexible, and remote talent with just a few clicks.
Our experienced business analysts will help you refine the project requirements and improve business processes through rigorous research and detailed documentation.
Related tools and technologies:
Storymap, Product Backlog, Business Model Canvas, Value Proposition.
Our Designers help you transform your product vision into user-friendly designs and create user journeys optimized for the best user experience and highest conversion rates.
Related tools and technologies:
Sketch, Figma, inVision, Zeplin, Adobe CC, Story Map, Principle, Piece of paper, Pencil
Our front-end developers create the part of your application that the users see and directly interact with. They make sure the experience is equally smooth and user-friendly to every person who uses the app.
Reducing the time needed to integrate changes while improving the quality is a tremendous competitive edge in today’s world. We employ the best CI/CD practices to minimize the number of errors during integration and deployment to streamline your project.
From meticulous manual testing to writing complex automated testing solutions, our bright QA engineers and scrupulous testing teams will ensure your software solution is free from any performance, stability, or functionality issues.
Capital Numbers is an ISO 9001 and ISO 27001 certified digital solutions company with 700+ experts working full time across 3 Delivery Centres. Established in 2012, Capital Numbers are headquartered in Kolkata, India, with offices in the US and Australia. We are winners of multiple awards from Duns and Bradstreet, Clutch, GoodFirms, Deloitte, Financial Times, Nikkei, Economic Times, and Bengal Chamber of Commerce (The oldest chamber of commerce in India).
We are incredibly proud to have over 100+ Five Star Reviews on platforms like Clutch, Google, and GoodFirms which is the most compared to any of our peers in the industry.