Hire the Best JavaScript Developers
in the United Kingdom

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Rating is 4.9 out of 5.
4.9/5
Based on 1,719 client reviews
Siddharth G.

Leicester, United Kingdom

$25/hr
5.0
5 jobs

I am a Senior Full Stack Developer specializing in the analysis, design, and delivery of scalable, high-performance software. With a deep foundation in Object-Oriented Programming (OOP), system design, and cutting-edge artificial intelligence, I bridge the gap between complex backend logic, cloud-native infrastructure, and intuitive frontend experiences. Core Expertise - AI & Intelligent Systems: Hands-on experience in LLM development, fine-tuning, and embedding vector-based search workflows to build context-aware systems. Expert in architecting autonomous AI Agents capable of tool use, multi-step reasoning, and seamless integration into enterprise backend pipelines. - AI-Driven Development: Proactive in leveraging advanced AI tools and LLM pair-programming methodologies to accelerate the entire software development lifecycle, automate repetitive tasks, and optimize code quality. - Microservices & Architecture: Expert in decomposing complex monoliths into resilient, event-driven Microservices and implementing Micro Frontend architectures to enable decoupled scaling and independent deployment cycles. - Backend Engineering: High proficiency in building robust, low-latency APIs and distributed systems using Node.js, Python, C#, and C++. - Frontend Excellence: Extensive experience in designing responsive, modular UIs with React, Angular, and VanillaJS, focusing on layout precision and fluid user experiences. - Cloud & DevOps: Proven track record in cloud-native development across both AWS and Azure ecosystems, leveraging container orchestration, serverless functions, and CI/CD pipelines to automate infrastructure delivery. - Quality & Practices: Passionate advocate for Test-Driven Development (TDD), clean code principles, and the strategic application of Design Patterns to ensure highly maintainable, stable codebases.

  • Node.js
  • React
  • AI Development
  • Web Development
  • iOS Development
  • Android App Development
  • TypeScript
  • Next.js
  • React Native
  • AWS Development
  • Microsoft Azure
  • Docker
  • Kubernetes
  • Python
  • AI Agent Development
  • Shipping & Order Fulfillment Software
  • Voice Recording
  • VoIP Software
Matt W.

Sheffield, United Kingdom

$60/hr
5.0
5 jobs

Iโ€™m Matt, a UK-based full-stack developer with 8+ years of professional experience delivering high-quality, bespoke web solutions for businesses of all sizes - from startups to established enterprises. I specialize in PHP and JavaScript development, with deep expertise in the WordPress ecosystem while also building modern, scalable applications using Laravel, Statamic, Node.js, and React. Whether you need a high-performing WordPress site, a custom Laravel application, or a tailored headless solution powered by React, I can deliver a product thatโ€™s secure, fast, and built to scale. โธป ๐Ÿ”ง Core Expertise โœ… WordPress Development โ€ข Custom Themes & Plugins โ€ข Advanced Custom Fields (ACF) โ€ข WooCommerce Development โ€ข API Integrations (REST & GraphQL) โ€ข WordPress Security & Optimization โœ… Laravel & Statamic Development โ€ข Custom Laravel applications โ€ข CMS builds with Statamic โ€ข REST API & third-party integrations โ€ข Authentication, roles, and permissions โ€ข Performance tuning & scalable architecture โœ… Modern JavaScript Development โ€ข React (including Next.js, Inertia.js, Authentication) โ€ข Node.js APIs & services โ€ข TailwindCSS, Bootstrap, SCSS โ€ข Frontend build tools (Vite, Webpack, Mix, NPM) โœ… Other Services โ€ข Hosting, deployment & CI/CD with Git โ€ข SEO & Google Analytics setup โ€ข Ongoing site maintenance & technical support โ€ข Full website management โธป ๐Ÿ† Why Work With Me? 1. Full-Stack Expertise: From backend logic in PHP/Laravel to frontend interactivity in Javascript & React, I can handle every layer of your project. 2. WordPress Specialist: 6+ years building everything from lightweight brochure sites to enterprise-level WordPress applications. 3. Tailored Solutions: No cookie-cutter builds โ€” I create custom solutions that fit your exact business goals. 4. Clear Communication: I translate technical detail into plain language so you always know where things stand. 5. Long-Term Reliability: I donโ€™t just deliver projects โ€” I provide the guidance, training, and support you need to grow. โธป ๐Ÿ”จ Tech Stack โ€ข CMS & Frameworks: WordPress, Laravel, Statamic โ€ข Frontend: React, jQuery, TailwindCSS, Bootstrap, SCSS โ€ข Backend: PHP (OOP, Laravel), Node.js โ€ข Build & Deployment: Vite, Webpack, Mix, Composer, NPM, Git CI/CD โ€ข Databases: MySQL, MariaDB โ€ข Other: Google Analytics, SEO best practices, API integrations โธป ๐Ÿ“Œ How I Work 1. Discovery & Planning: Understanding your goals, requirements, and challenges. 2. Transparent Estimates: No surprises โ€” clear costs and timelines from day one. 3. Iterative Development: Regular updates, feedback, and checkpoints. 4. Post-Launch Support: Training, documentation, and ongoing maintenance available. โธป ๐Ÿ’ฌ Letโ€™s Work Together If youโ€™re looking for a highly skilled developer who can bring clarity, expertise, and results to your next project - whether thatโ€™s a custom WordPress site, a Laravel app, a Statamic CMS build, or a Javascript Application - Iโ€™d love to collaborate. ๐Ÿ“ฉ Get in touch today, and letโ€™s build something powerful together.

  • JavaScript
  • jQuery
  • React
  • Web Design
  • CSS
  • WordPress
  • WordPress Theme
  • PHP
  • WordPress Development
  • WordPress e-Commerce
  • Web Development
  • Advanced Custom Fields Plugin
  • Git
  • Tailwind CSS
  • API Integration
  • Next.js
  • Vue.js
  • Nuxt.js
Noor A.

Huddersfield, United Kingdom

$27/hr
5.0
2 jobs

Building scalable, high-performance ๐€๐ง๐ ๐ฎ๐ฅ๐š๐ซ, ๐‘๐ž๐š๐œ๐ญ, ๐š๐ง๐ ๐๐ž๐ฑ๐ญ.๐ฃ๐ฌ ๐š๐ฉ๐ฉ๐ฅ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ for SaaS platforms, enterprise teams, dashboards, admin panels, and modern web products. Many frontend applications struggle with slow performance, poor architecture, inconsistent UI, complex state management, and code that becomes hard to maintain as the product grows. I help companies solve these problems by building clean, scalable, and production-ready frontend applications using ๐€๐ง๐ ๐ฎ๐ฅ๐š๐ซ, ๐‘๐ž๐š๐œ๐ญ, ๐๐ž๐ฑ๐ญ.๐ฃ๐ฌ, ๐“๐ฒ๐ฉ๐ž๐’๐œ๐ซ๐ข๐ฉ๐ญ, ๐‰๐š๐ฏ๐š๐’๐œ๐ซ๐ข๐ฉ๐ญ, ๐๐ ๐‘๐ฑ, ๐‘๐ž๐๐ฎ๐ฑ, ๐‘๐ฑ๐‰๐’, ๐€๐ง๐ ๐ฎ๐ฅ๐š๐ซ ๐Œ๐š๐ญ๐ž๐ซ๐ข๐š๐ฅ, ๐Œ๐š๐ญ๐ž๐ซ๐ข๐š๐ฅ ๐”๐ˆ, ๐“๐š๐ข๐ฅ๐ฐ๐ข๐ง๐ ๐‚๐’๐’, ๐‘๐„๐’๐“ ๐€๐๐ˆ๐ฌ, ๐š๐ง๐ ๐€๐ณ๐ฎ๐ซ๐ž ๐€๐๐ˆ ๐ข๐ง๐ญ๐ž Iโ€™m a Senior Frontend Engineer with 10+ years of experience building enterprise web applications across healthcare, insurance, logistics, analytics, SaaS, dashboards, and business platforms. My work focuses on frontend architecture, Angular development, React development, Next.js frontend development, responsive UI, performance optimization, reusable component systems, API-integrated applications, frontend modernization, and scalable UI engineering. Iโ€™ve improved frontend performance by around 30%, built reusable Angular Material component libraries for multiple teams, integrated complex REST/Azure APIs, and helped teams reduce technical debt through cleaner, maintainable frontend architecture. ๐€๐ง๐ ๐ฎ๐ฅ๐š๐ซ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ โœ” Angular 6โ€“18 development โœ” Enterprise Angular applications โœ” Angular Material UI โœ” NgRx state management โœ” RxJS implementation โœ” Lazy loading and modular architecture โœ” Angular migration and modernization โœ” Angular performance optimization โœ” Micro-frontend architecture โœ” Reusable Angular component libraries ๐‘๐ž๐š๐œ๐ญ & ๐๐ž๐ฑ๐ญ.๐ฃ๐ฌ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ โ–ถ React.js frontend development โ–ถ Next.js applications with SSR and SSG โ–ถ TypeScript-based frontend architecture โ–ถ Redux, React Hooks, Context API โ–ถ SaaS frontend development โ–ถ Dashboard and admin panel UI โ–ถ API-driven React applications โ–ถ Modern frontend UI development โ–ถ Responsive and SEO-friendly frontend systems ๐…๐ซ๐จ๐ง๐ญ๐ž๐ง๐ ๐€๐ซ๐œ๐ก๐ข๐ญ๐ž๐œ๐ญ๐ฎ๐ซ๐ž & ๐๐ž๐ซ๐Ÿ๐จ๐ซ๐ฆ๐š๐ง๐œ๐ž โœ… Scalable frontend architecture โœ… Component-based UI systems โœ… Frontend performance optimization โœ… Bundle size reduction โœ… Cross-browser compatibility โœ… Responsive web applications โœ… Clean, maintainable, production-ready code โœ… Technical debt reduction ๐€๐๐ˆ ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง & ๐๐ฎ๐š๐ฅ๐ข๐ญ๐ฒ โœ” REST API integration โœ” Azure API integration โœ” API-driven dashboards โœ” Secure authentication flows โœ” Real-time frontend data handling โœ” Unit testing with Jasmine, Karma, Jest โœ” Cypress testing and regression testing โœ” Code reviews and frontend best practices ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ ๐ˆ ๐‚๐š๐ง ๐‡๐ž๐ฅ๐ฉ ๐–๐ข๐ญ๐ก โœจ Enterprise Angular applications โœจ React and Next.js web applications โœจ SaaS dashboards and admin panels โœจ Analytics dashboards โœจ Frontend modernization โœจ Angular migration โœจ Frontend performance optimization โœจ Reusable UI component libraries โœจ API-integrated frontend systems โœจ Responsive frontend development โœจ Cross-browser UI fixes โœจ Frontend bug fixing and optimization ๐“๐ž๐œ๐ก ๐’๐ญ๐š๐œ๐ค Angular, React.js, Next.js, TypeScript, JavaScript ES6+, NgRx, Redux, RxJS, Angular Material, Material UI, Tailwind CSS, Bootstrap, SCSS/SASS, HTML5, CSS3, REST APIs, Azure APIs, Cypress, Jest, Jasmine, Karma, Git, GitHub, GitLab, Jira, Confluence, Figma. ๐–๐ก๐ฒ ๐‚๐ฅ๐ข๐ž๐ง๐ญ๐ฌ ๐–๐จ๐ซ๐ค ๐–๐ข๐ญ๐ก ๐Œ๐ž โœ” 10+ years of frontend engineering experience โœ” Strong enterprise application development background โœ” Angular-first expertise with React and Next.js support โœ” Clean, scalable, and maintainable frontend architecture โœ” Performance-focused frontend development โœ” Experience building reusable component libraries โœ” Strong communication with product, design, and backend teams โœ” Reliable delivery in Agile environments โœ” Ability to improve existing frontend systems, not just build new screens If you need a senior frontend engineer who can build, improve, or modernize your Angular, React, or Next.js application, I can help you create a fast, scalable, responsive, and maintainable frontend system built for long-term business growth. Keywords: Angular Developer, React Developer, Next.js Developer, Senior Frontend Engineer, Frontend Developer, TypeScript Developer, JavaScript Developer, Angular Expert, Angular Frontend Developer, React.js Developer, Frontend Engineer, Enterprise Frontend Developer, SaaS Frontend Developer, Dashboard Developer, Admin Panel Developer, Frontend Architect, NgRx Developer, RxJS Developer, Redux Developer, Angular Material Developer, Material UI Developer, Tailwind CSS Developer, REST API Integration, Azure API Integration, Frontend Performance Optimization, Angular Migration, Frontend Modernization, Component Library Development, Responsive Web Application, Micro Frontends, Scalable Frontend Architecture

  • JavaScript
  • React
  • Angular
  • Next.js
  • TypeScript
  • Front-End Development
  • Responsive Design
  • Redux
  • RxJS
  • Angular Material
  • RESTful API
  • Material UI
  • SaaS
  • Web Application
  • Performance Optimization
  • Web Development
  • Tailwind CSS
  • Bootstrap
  • API Integration
  • HTML5
Tayyab K.

Preston, United Kingdom

$40/hr
4.8
13 jobs

Full Stack JavaScript Developer specialising in Node.js, React, React Native, and Angular. I build web and mobile applications that are fast, maintainable, and genuinely solve the problem in front of them. What I bring to your project: โ€ข Full stack JavaScript โ€” React, Angular, Node.js, Express โ€ข Cross-platform mobile apps with React Native (iOS and Android from one codebase) โ€ข Databases done properly โ€” MongoDB and PostgreSQL, designed to scale โ€ข REST APIs and third-party integrations โ€ข AWS data pipelines for heavy processing and analytics workloads โ€ข Payment gateway integrations (Stripe, PayPal, and others) with security as a priority โ€ข Responsive interfaces with HTML, CSS, and Bootstrap I care about clean code and clear communication. That means youโ€™ll know where your project stands, youโ€™ll get something built to last, and Iโ€™ll ask the right questions up front rather than guessing. If youโ€™ve got a web or mobile app to build, or an existing one that needs a capable pair of hands, Iโ€™d be glad to hear about it.

  • Node.js
  • React
  • MongoDB
  • TypeScript
  • Web Development
  • PostgreSQL
  • Angular
  • ExpressJS
  • Next.js
  • NestJS
  • Payment Gateway Integration
  • Amazon Redshift
  • Amazon S3
  • Database
  • Amazon Athena
Wasiq C.

Wakefield, United Kingdom

$35/hr
4.9
253 jobs

Senior Full Stack Web & Mobile App Developer | Contract & Remote Specialist With 15+ years of experience and over 4,000 hours worked on Upwork, I help businesses build scalable, secure, and high-performance web and mobile applications that deliver measurable results. I specialise in PHP, Laravel, React, Node.js, Flutter, AWS, and AI/ML integration creating tailored solutions that meet your current needs and grow with your business. ๐Ÿ’ผ Core Services Full Stack Web Development โ€“ PHP, Laravel, React, Vue.js, Nuxt.js, Node.js, TypeScript, Angular Mobile App Development โ€“ Flutter, React Native, cross-platform, native iOS & Android Cloud Integration & Deployment โ€“ AWS, Google Cloud, serverless architecture, CI/CD pipelines AI/ML Integration โ€“ Hugging Face, Python, NLP, automation workflows E-Commerce Solutions โ€“ WooCommerce, Shopify, OpenCart, Magento, custom SaaS platforms Legacy System Modernisation โ€“ performance optimisation, security hardening, migration to cloud ๐Ÿ† Why Clients Hire Me Proven Track Record: 217+ successful projects and $100K+ earned on Upwork Enterprise Experience: Delivered solutions for Holland & Barrett, NHS, and other global brands Industry Expertise: Healthcare, E-learning, FinTech, Retail, SaaS, and more End-to-End Delivery: From initial concept to deployment, with ongoing support Strong Communication: Clear updates, quick responses, and deadline-focused delivery ๐Ÿ“Œ Technology Stack & Tools Languages & Frameworks: PHP, Laravel, JavaScript, TypeScript, React, Vue.js, Nuxt.js, Node.js, Flutter, Angular Databases: MySQL, MongoDB, SQL Server Cloud Platforms: AWS, Google Cloud Version Control: Git, SVN AI/ML Tools: Hugging Face, TensorFlow, Python ๐Ÿ’ก Letโ€™s Build Something Great Whether you need a full-stack partner for a new build, a mobile app expert to reach more customers, or cloud & AI-powered solutions to modernise your systems, I can help. ๐Ÿ“ฉ Letโ€™s discuss your project today and bring your vision to life.

  • JavaScript
  • Node.js
  • React
  • React Native
  • PHP
  • User Authentication
  • Flutter
  • Laravel
  • Mobile App Development
  • Firebase Realtime Database
  • API Development
  • WordPress
  • Web Development
  • Full-Stack Development
  • Vue.js
James T.

Harlow, United Kingdom

$20/hr
5.0
5 jobs

Full-stack web developer with 5 years experience building Next.js and Node.js products. Technical skills: - Javascript, Typescript Frontend - React - Redux - HTML, CSS, Sass Backend - Node.js - Prisma ORM - SQL - MySQL, PostgreSQL, MongoDB, Firebase - REST API, GraphQL - Amazon Web Services - TDD. Jest - Bash scripting - Git - Webpack, Babel

  • JavaScript
  • Node.js
  • React
  • Git
  • CSS
  • SQL
  • PostgreSQL
  • HTML
  • Redux
  • WebRTC
  • Cryptography
  • Jest
  • React Native
  • Websockets
  • Test-Driven Development

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Cost to hire a JavaScript Developer

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