JavaScript engineering for performance, modularity, and AI-driven delivery

Q: How to build modern JavaScript application development?

QED42 builds modern JavaScript applications using React, Angular, and Vue.js to simplify complex workflows and deliver outstanding user experiences through modular architecture

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JavaScript application development

We build modern applications using React, Angular, and Vue.js to simplify complex workflows and deliver outstanding user experiences through modular architecture

Headless development

Decoupled architecture that addresses modern digital challenges and gives teams the flexibility to deliver tailored content across websites, mobile apps, and IoT devices

GenAI-enabled team integration

GenAI is integrated directly into development workflows to speed up delivery, automate testing, and improve consistency in delivery and experience, without increasing overhead

AI-assisted solutions for JavaScript apps

Search, summarization, chat, and personalization - embedded into frontend and backend systems where they measurably improve product experience and usability

Hybrid mobile application development

Cross-platform apps built with a single React Native codebase. Reliable performance and simpler maintenance across iOS and Android

API development

Custom APIs built for real-time exchange, business logic, and system interoperability. Secure, stable, and ready to scale and integrate as needed

Progressive web development

Installable, fast-loading web apps with offline support. Designed to deliver a mobile-native feel without reliance on app stores

Frontend performance optimization

Code, assets, and caching tuned for speed, engagement, and cross-device consistency. Built-in performance, not bolted on later

Our work

All work

Non-Profit

Interactive data visualization of climate hazards for the International Organization for Migration, UN

Food and Beverages

Marketing CMS for Blinkit’s Native Mobile App

Financial Services

System-led performance with internal control for Kotak Securities

Engineering process

Drupal Development Diagram explaining the different layers of Drupal Platform

Stacks and contributions

Frontend is built with React.js, Next.js, and Vue.js, frameworks chosen for flexibility, performance, and strong community support.

Hybrid mobile apps are delivered using React Native from a shared codebase.

Backend systems run on Node.js and Strapi CMS, designed for custom workflows and rapid iteration.

Python is used for machine learning tasks, backend logic, and data APIs powering AI features.

GenAI is integrated into development workflows to automate testing, improve delivery speed, and support data-informed decisions.

With over 110+ notable contributions to Strapi and Next.js, we bring deep expertise and active participation in advancing these technologies

Cut design-to-dev delivery time from months to weeks

We deliver 30% faster with AI-assisted workflows and smarter frontend systems

Engineering principles

Modular and scalable architecture

Components are built independently and assembled into systems that grow cleanly. Microservices and design systems support flexibility and consistency.

Automated and secure DevOps

CI/CD pipelines manage deployment. Infrastructure is provisioned as code. Security is built into every stage of delivery, not added later.

User-informed development

Accessibility and cross-platform use cases are built in from the start. Real usage data and feedback loops guide updates. AI helps identify patterns that improve what ships next.

Layered testing and validation

Testing covers unit, integration, and system behavior. AI frameworks help simulate edge cases, catch hidden failures, and improve test coverage over time.

Next.js performance tuning: practical fixes for better Lighthouse scores

Seamless Headless Drupal integration with Next.js 15 (App Router)

Solving performance challenges with the Speculation API: a deep dive

Higher-Ed

Healthcare

Non-Profits

DXP

Podcast

BizTech

Open Source

Events

Quality Engineering

Design Process

JavaScript

Drupal

Culture

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JavaScript experiences, engineered for performance