JJP
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Web & mobile development experts

React, TypeScript & Node.js specialists building products that scale

From responsive web applications to cross-platform mobile apps, we deliver full stack solutions built on modern technologies — with the ability to integrate AI where it adds real value. We work closely with you to turn your vision into polished, production-ready software.

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We specialise in modern, battle-tested technologies trusted by leading companies worldwide:

  • React & React Native

    React & React Native

    We build performant, component-driven interfaces for web and mobile using React and React Native, enabling code sharing across platforms and rapid iteration
  • TypeScript

    TypeScript

    Type-safe development across the entire stack ensures fewer bugs, better developer experience and more maintainable codebases as your project grows
  • Node.js

    Node.js

    Our backend expertise in Node.js lets us build scalable APIs, real-time services and server-side applications using a unified JavaScript ecosystem
  • AI integration

    AI integration

    We can integrate AI into your applications, either using a fully bespoke system based on foundation models or using higher level off-the-shelf solutions e.g. chatbots integrated into your data
  • CMS Agnostic

    CMS Agnostic

    We build custom solutions that are not tied to a specific CMS, allowing us to provide the best solution for your business

Services - End-to-end development for web, mobile and beyond

From your first digital product to scaling an existing platform, we bring deep technical expertise and a collaborative approach to every engagement

  • Web development. From marketing sites to complex web applications, we build fast, accessible and responsive experiences using React, Next.js and TypeScript that perform brilliantly across every device
  • Mobile app development. We build cross-platform mobile applications with React Native that run seamlessly on both iOS and Android, sharing code where possible while delivering a truly native feel
  • Full stack & backend development. Robust APIs, real-time services, database architecture and cloud infrastructure — we handle the entire backend so your product can scale with confidence
  • AI integration. From cloud-based foundation models to bespoke AI chatbots connected to your internal systems, we help you embed intelligent features into your web and mobile products

Some examples of what we do

We use our expertise in software development to solve a wide range of problems, here are just some examples

Full stack web platform with real-time data

A modern React and Node.js platform built to handle complex financial data workflows

We partnered with a financial services company to build a full stack web platform from the ground up, using React and TypeScript on the frontend with a Node.js backend.

The platform needed to handle real-time data feeds, complex filtering and reporting dashboards — all while maintaining a fast, responsive user experience.

We architected the system with scalability in mind, implementing server-side rendering with Next.js for performance-critical pages and WebSocket connections for live data updates.

The result was a robust, production-ready application that the client's team could confidently maintain and extend going forward.

Automated data collection platform

A bespoke Node.js platform that collects and processes large-scale market data for investment decisions

We have worked with multiple investment firms who need reliable, large-scale data collection to inform critical investment decisions.

Using Node.js, we built a suite of automated data collection tools that scrape, parse and normalise information from dozens of web sources, delivering millions of structured data points.

The data is processed through a pipeline we developed in close collaboration with the client's investment team, ensuring the right information is captured in the formats they need.

Web and mobile application development

Building a cross-platform shopping experience from the ground up

We worked with an ambitious e-commerce startup to design and build their entire digital presence — a responsive web application and companion mobile apps for iOS and Android.

Using React for the web storefront and React Native for mobile, we delivered a consistent, high-quality user experience across all platforms while sharing a significant portion of the codebase.

The Node.js backend handles inventory management, order processing and payment integration, all built with TypeScript for reliability and maintainability.

Hands-on web and mobile consulting

Embedded consulting with a multinational company to modernise their digital products

We are currently embedded with a large multinational company, helping them modernise their web and mobile applications following a major acquisition.

Our team provides day-to-day development support, technical leadership and architecture guidance — working as a seamless extension of their in-house engineering team.

With deep experience across React, React Native, TypeScript and Node.js, we help the client ship features faster while improving code quality and developer experience.

JJP delivered a complex data platform on time and to an exceptional standard. Their technical expertise and proactive communication made them a pleasure to work with throughout the engagement.

- Investment director, Epiris LLP

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