Hire the Best JavaScript Developers
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4.8/5
Based on 1,440 client reviews
Syed A.

Milton, Canada

$30/hr
5.0
5 jobs

Hi, I am a results-driven Full-Stack (MERN & Python) Developer with a Bachelor’s in Software Engineering and solid experience delivering scalable SaaS, AI-powered, and automation-driven platforms. I’ve led backend architecture, API integrations, and performance optimization for startups and enterprise-grade applications handling thousands of concurrent users. Over the past few years, I’ve worked with teams across healthcare, education, and AI to build production-ready, secure systems from backend infrastructure to full-scale integrations with tools like Twilio, OpenAI, and Stripe. I focus on writing clean, modular, and maintainable code that scales efficiently. What I Do Best • Full-Stack Development: Python, JavaScript, and TypeScript • Backend Development: Python (FastAPI, Flask, Django), Node.js (Express) • API Design & Integrations: REST, Webhooks, Third-party services (CRM, Twilio, OpenAI) • Databases: PostgreSQL, MySQL, Firebase, Supabase • DevOps: GitHub Actions CI/CD, AWS, Docker, performance optimization • Automation: Workflow automation (n8n, ERPNext scripting) • AI/ML Projects: Model integration, Flask-based deployment, and ML pipelines Key Projects ‣ AI Communication Platform: Architected Python backend for 10K+ concurrent users with <150ms latency using FastAPI and PostgreSQL. ‣ ERP Automation System: Customized ERPNext workflows, built client/server scripts, and automated HR, accounting, and sales pipelines with API-based workflows. ‣ SaaS Infrastructure (BeWhoop): Led backend development for 100K+ users with modular Node.js APIs, JWT-based authentication, and optimized database queries for 35% faster responses. ‣ AI & ML Projects: Built Flask-based web apps for X-ray classification and fake news detection using TensorFlow and NLP models. Tech Stack - Languages: Python, JavaScript - Frameworks: Django, Flask, FastAPI, React, Node.js - Databases: PostgreSQL, SQLite, MySQL, Firebase - Cloud & Tools: AWS, DigitalOcean, GitHub Actions, Docker - Development Practices: TDD, CI/CD, Documentation, Agile Collaboration Why Clients Work With Me ⁃ Proven record of scaling backend systems and reducing latency. ⁃ Solid understanding of API design, security, and compliance. ⁃ Strong communication, I translate complex technical requirements into clear deliverables. ⁃ I actively use AI tools to speed up development without compromising quality. Let’s discuss your project! Whether it’s building a web-app, backend API, integrating AI automation, or launching MVP, I can help you design, build, and scale it efficiently.

  • JavaScript
  • Node.js
  • React
  • Artificial Intelligence
  • Machine Learning
  • Machine Learning Model
  • MERN Stack
  • Python
  • LangChain
  • Amazon Web Services
  • PostgreSQL
  • MySQL
  • Firebase
  • Laravel
  • TypeScript
Oyeyemi A.

Sydney, Canada

$15/hr
5.0
5 jobs

I build high-converting websites for businesses that are serious about growth. As a WordPress expert with a marketer's mindset, I don't just design pages—I Architect strategic digital assets that attract leads and close sales. The Problem & Your Solution (The "How"): Most business websites are beautiful cost centers. I build yours as a profit-generating engine. With 4+ years of full-stack development and a background in marketing, I bridge the gap between aesthetics and analytics. Every design decision—from layout to button color—is informed by conversion psychology and technical performance. Proof & Specificity (The "What"): I specialize in creating websites that deliver measurable results: · For E-commerce: Streamlined funnels that reduce cart abandonment · For Service Businesses: Lead-generation machines that book more consultations · For Startups: Scalable foundations that support rapid growth Recent results include: A car dealership site that increased quote requests by 30% and a cosmetic store that boosted mobile conversions by 25%. Technical Execution & Process: ⚙️ My Development Stack: · Primary Platforms: WordPress (Elementor/Divi) & Webflow · Core Technologies: JavaScript, React, Python · Design & Strategy: Figma, Adobe Suite, Conversion-Focused Wireframing 🚀 What I Deliver: · Speed-optimized, mobile-perfect business websites · SEO-optimized landing pages & sales funnels · Seamless platform migrations & redesigns · Ongoing maintenance with performance monitoring Why Choose Me: Beyond Code: The Marketing Mindset Advantage ✅ I speak business, not just tech – I understand your website needs to ROI ✅ Proven track record of delivering ahead of schedule ✅ Clear communication with weekly progress updates ✅ Strategic partner focused on your business objectives, not just project completion I'm currently accepting 1-2 new projects for Canadian businesses looking to transform their online presence into their strongest sales channel. Let's discuss how your website can generate more leads, i will: 1.⁠ ⁠Provide a free, specific suggestion to improve your current site's conversion rate 2.⁠ ⁠Share a relevant case study from your industry 3.⁠ ⁠Outline a clear project timeline and investment Let's build a website that doesn't just look good—it performs better. Keywords To Find Me WordPress developer | WordPress expert | WordPress website | WordPress design | WordPress development | custom WordPress | WordPress customization | WordPress specialist | WordPress consultant | WordPress programmer | WordPress engineer | WordPress freelancer | WordPress pro | WordPress website builder | WordPress website designer | WordPress website developer | WordPress website creation | WordPress website development | WordPress website design | WordPress web developer | WordPress web designer | WordPress web design | WordPress web development | custom website design | custom website development | custom web design | custom web development | website design | website development | web design | web development | website designer | website developer | web designer | web developer | website builder | website creator | website maker | responsive web design | mobile responsive design | mobile-first design | mobile-friendly website | responsive website | responsive design | full-stack developer | front-end developer | back-end developer | HTML developer | CSS developer | JavaScript developer | PHP developer | PHP WordPress | WordPress PHP | WordPress HTML | WordPress CSS | WordPress JavaScript | WordPress jQuery | WordPress Bootstrap | WordPress Tailwind | WordPress REST API | WordPress API integration | headless WordPress | WordPress multisite | WordPress multisite developer | WordPress network | WordPress theme developer | WordPress theme customization | WordPress theme design | custom WordPress theme | WordPress child theme | WordPress page builder | WordPress block editor | WordPress Gutenberg | Gutenberg developer | Gutenberg blocks | custom Gutenberg blocks | custom blocks development | WordPress plugin developer | WordPress plugin development | custom plugin development | WordPress plugin integration | WordPress plugin configuration | WordPress plugin setup | WordPress troubleshooting | WordPress bug fix | WordPress error fix | WordPress support | WordPress maintenance | WordPress update | WordPress migration | site migration | WordPress transfer | Wix to WordPress | Squarespace to WordPress | Webflow to WordPress | Shopify to WordPress | CMS migration | platform migration | website migration | WordPress hosting setup | WordPress server setup | WP Engine setup | Flywheel setup | SiteGround WordPress | Kinsta WordPress | Cloudflare WordPress | Namecheap WordPress | GoDaddy WordPress | WordPress install | WordPress setup | WordPress configuration | WordPress optimization | WordPress performance | WordPress speed optimization | Core Web Vitals optimization | Google PageSpeed optimization | WordPress caching | WP Rocket

  • Web Design
  • WordPress Website
  • Conversion Rate Optimization
  • WordPress Landing Page
  • Landing Page Design
  • WordPress Malware Removal
  • On-Page SEO
  • Responsive Design
  • Online Store Customization
  • Local SEO
  • Landing Page Optimization
  • Website Optimization
  • Figma
  • No-Code Landing Page
  • Website Audit
  • WordPress Website Design
  • WordPress Security
  • WordPress
  • WordPress Bug Fix
  • WordPress Customization
Nayab K.

Thorold, Canada

$40/hr
4.9
28 jobs

I help founders and businesses build 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐡𝐞𝐚𝐝𝐥𝐞𝐬𝐬 𝐂𝐌𝐒 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐚𝐧𝐝 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐰𝐞𝐛/𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬, from frontend architecture to backend systems and integrations. 🚫 𝗜 𝗱𝗼𝗻’𝘁 𝘀𝗲𝗹𝗹 𝗵𝗼𝘂𝗿𝘀. 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝘁𝗵𝗮𝘁 𝘀𝗰𝗮𝗹𝗲. 🤝 My promise: If expectations aren't met, I take full responsibility and make it right. Backed by 9,800+ hours and a Top Rated Plus track record on Upwork. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐈’𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐨𝐧 𝐢𝐧𝐜𝐥𝐮𝐝𝐞: ➔ SaaS dashboards and product platforms ➔ AI agents & LLM-powered features (chatbots, RAG, workflow automation) ➔ Headless CMS-driven enterprise websites (Storyblok, Sanity) ➔ Healthcare & MedTech applications ➔ E-commerce and marketplace systems ➔ Subscription billing & Stripe integrations ➔ Fitness and mobile/web applications Across these, I've shipped 30+ production applications serving real users at scale handling complex user flows, large-scale content, and performance-critical workloads. 𝙒𝙝𝙖𝙩 𝙔𝙤𝙪 𝘾𝙖𝙣 𝙀𝙭𝙥𝙚𝙘𝙩: ➔ Scalable frontend architecture ➔ High-performance React / Next.js applications ➔ AI integration (LLMs, AI agents, RAG pipelines) ➔ Robust backend systems (Node.js, Python, Django, .NET Core) ➔ Flexible CMS-driven systems ➔ Clean and maintainable APIs ➔ Secure, scalable databases & cloud infrastructure (AWS, Docker, CI/CD) ➔ Pixel-perfect UI with strong UX focus ➔ Fast iteration with production-ready quality ➔ End-to-end ownership ➔ Built to scale from day one 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: React • Next.js • TypeScript • Redux • React Native Node.js • Python • Django • .NET Core LLMs • OpenAI / Anthropic APIs LangChain • RAG • Vector DBs Storyblok • Sanity • Headless CMS Stripe • REST APIs • Firebase MongoDB • MySQL • SQL AWS • Docker • CI/CD 📩 Products grow. Architecture decides if they scale. Let’s build it right. #FullStackDeveloper #ReactJS #NextJS #AIAgents #LLM #AIIntegration #SaaSDevelopment #HeadlessCMS #Storyblok #SanityCMS #ProductEngineering #ScalableSystems #StripeIntegration #TypeScript

  • JavaScript
  • Node.js
  • React
  • TypeScript
  • Next.js
  • AI Agent Development
  • Database Management System
  • Retrieval Augmented Generation
  • AI Development
  • RESTful API
  • Generative AI
  • Python
  • LangChain
  • Full-Stack Development
  • AI Chatbot
  • SaaS Development
  • CMS Development
  • Stripe
  • FinTech
  • API Integration
Niroyan K.

Etobicoke, Canada

$12/hr
4.7
25 jobs

Hey Boss.. I know , are you looking for something right ? So first, go and check out my recent projects and client feedback. Do you think I’m a good fit for this project? If yes, let me introduce myself. Full-Stack Web Developer | React | Next.js | TypeScript | Expresses JS | MongoDB | Firebase | AI & Cloud I’m a Full-Stack Web Developer focused on building fast, modern, responsive, SEO-friendly, and scalable web applications for startups, agencies, and businesses. I’ve also worked on AI applications, SaaS products, dashboards, CMS websites, authentication systems, API integrations, landing pages, portfolios, and custom business applications. 💻 Tech Stack Frontend: React, Next.js, Astro.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, SCSS, Bootstrap Backend & Database: Node.js, Python, Supabase, Firebase, PostgreSQL, MongoDB APIs & CMS: REST APIs, GraphQL, Sanity CMS, third-party API integrations Animation & UI: Framer Motion, GSAP, responsive design, reusable component systems, micro-interactions Development & Deployment: Git, GitHub, Vercel, Cloudflare, CI/CD workflows AI: OpenAI API integration, AI-assisted development, AI-powered application features 🎯 What I Build SaaS • Landing Pages • Business Websites • Dashboards • AI Applications • E-commerce • Portfolio Websites • CMS Websites • Custom Web Apps 🛠 Services Frontend Development • Full-Stack Development • API Integration • UI/UX Implementation • Figma to Code • Responsive Design • SEO Optimization • Performance Optimization • Authentication • Database Design • CMS Development • OpenAI API Integration • Bug Fixing • Website Maintenance Why Work With Me? ✓ Pixel-perfect implementation ✓ Clean, reusable, scalable code ✓ Mobile-first responsive development ✓ Strong React/Next.js experience ✓ Smooth Framer Motion & GSAP animations ✓ SEO-focused architecture ✓ Performance and Core Web Vitals optimization ✓ Fast communication and regular updates ✓ Git/GitHub-based development workflow ✓ Reliable, on-time delivery I’m comfortable joining both new builds and existing codebases, understanding the architecture quickly, fixing issues, implementing new features, and shipping production-ready updates. Keywords: React Developer, Next.js Developer, Full-Stack Developer, Frontend Developer, JavaScript Developer, TypeScript Developer, Astro Developer, Tailwind CSS Developer, SaaS Developer, AI Developer, Figma Developer, Landing Page Developer, Dashboard Developer, API Integration, Supabase Developer, Firebase Developer, Node.js Developer, Python Developer, SEO Optimization.

  • JavaScript
  • Node.js
  • React
  • Web Design
  • Landing Page
  • Website
  • Responsive Design
  • Web Development
  • HTML5
  • Front-End Development
  • Next.js
  • Tailwind CSS
  • SEO Strategy
  • JSON
  • API
Sofia S.

Toronto, Canada

$50/hr
5.0
13 jobs

• A proficient Senior Full Stack Developer/Application Architect with more than 14 years of experience in Information Technology on a variety of technologies. • Experience Architecting, Designing and delivering Proof Of Concepts for Technical Integrations on both frontend and backend of web applications. • Azure certified Devops Expert with extensive handson with Azure CI/CD pipelines, ADF , Function App and many other azure services.Experience with AWS EC2 and Mapped knowledge on GCP • Coder with Architecture Interest by acquiring and asipiring to build onTOGAF Foundation Badge and courses from University of Toronto. • Excellent communication skills including verbal communication and Problem Solver. • Experience with Azure Data Factory to ingest data from one system to another.

  • Node.js
  • Azure Cosmos DB
  • Azure DevOps
  • ExpressJS
  • Docker
  • TypeScript
  • RESTful Architecture
  • Microservice
  • API Integration
  • API
  • DocuSign
  • Microsoft SharePoint
  • Fathom Applications Fathom
  • OAuth
  • User Authentication
Harsh V.

Surrey, Canada

$22/hr
5.0
1 jobs

✅Full-Stack JavaScript Developer with 5+ years of hands-on experience crafting scalable, high-performance web applications. I specialize in React.js, Node.js, TypeScript, and cloud platforms like AWS and Azure. I’ve collaborated with startups and mid-size businesses across e-commerce, healthcare, and logistics to turn business goals into production-ready software. 🧠 What I Bring to the Table ✅ Technical Expertise Across the Stack Frontend: React.js, Next.js, Angular (v6–14), TypeScript, JavaScript (ES6+), Redux, TailwindCSS Backend: Node.js, Express.js, REST APIs, GraphQL Cloud & DevOps: AWS (EC2, S3, Lambda), Azure (App Services, Functions), CI/CD with GitHub Actions & Azure DevOps Database: MongoDB, PostgreSQL, SQL Server ✅ Tangible Results Delivered 15+ full-stack JavaScript applications end-to-end Increased frontend performance and reduced load times by up to 50% Migrated legacy apps to React with modern state management and code splitting Built and deployed apps used by thousands of users across business units ✅ Reliable Software Delivery Clean, modular, and well-documented code Agile practices: daily standups, sprint reviews, backlog grooming Strong collaboration with QA, design, and business teams Emphasis on testable code using Jest, Mocha, and basic end-to-end automation 🔧 Core Services Full-Stack JavaScript Web App Development Modern Frontend Engineering with React.js / Next.js RESTful & GraphQL API Design + Integration Node.js Backend Services and Microservices Cloud Infrastructure Setup and Deployment (AWS, Azure) Legacy Modernization, Code Refactoring, and Performance Optimization Ongoing Maintenance & Feature Enhancements 🤝 Why Clients Work With Me 5+ years of full-stack JavaScript expertise Clear, consistent communication from kickoff to delivery Fast, iterative development with a focus on quality Solution-oriented not just coding, but contributing to business success Comfortable across time zones and remote team environments 📩 Let’s Connect Whether you’re building from scratch or scaling an existing app, I’m here to help you ship smarter and faster with JavaScript.

  • JavaScript
  • Node.js
  • React
  • MERN Stack
  • MEAN Stack
  • Web Development
  • MongoDB
  • ExpressJS
  • Angular
  • TypeScript
  • Full-Stack Development
  • Next.js
  • PostgreSQL
  • HTML
  • Tailwind CSS

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