Hire the Best Web Application Developers
in Sri Lanka

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Ravindu S.

Polonnaruwa, Sri Lanka

$20/hr
5.0
9 jobs

Flutter Mobile App Developer building production-ready Android & iOS applications used by 1,000+ active users. I help startups and businesses turn ideas into scalable mobile applications — from MVP development to App Store & Play Store launch. Currently working as a Mobile & Web Developer at McLarens Group of Companies, developing enterprise applications used daily by real users in production environments. ━━━━━━━━━━━━━━━━━━━━━━━ 📱 MOBILE APP DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━ • Flutter (Android & iOS) • Modern & Responsive UI/UX • Firebase Integration • Push Notifications • Offline Functionality • Real-Time Features • Performance Optimization ━━━━━━━━━━━━━━━━━━━━━━━ 🔥 FIREBASE & BACKEND ━━━━━━━━━━━━━━━━━━━━━━━ • Firebase Authentication • Firestore & Realtime Database • Cloud Functions • Storage & Analytics • REST API Integration • Node.js Backend Development ━━━━━━━━━━━━━━━━━━━━━━━ 💳 PAYMENTS & SUBSCRIPTIONS ━━━━━━━━━━━━━━━━━━━━━━━ • Stripe Integration • In-App Purchases • Subscription Management • Payment Gateway Integration • Secure Payment Flows ━━━━━━━━━━━━━━━━━━━━━━━ 🤖 AI & AUTOMATION ━━━━━━━━━━━━━━━━━━━━━━━ • OpenAI Integration • AI Chatbots & Assistants • AI-Powered Features • Smart Workflows & Automation ━━━━━━━━━━━━━━━━━━━━━━━ 🚀 DEPLOYMENT & PUBLISHING ━━━━━━━━━━━━━━━━━━━━━━━ • Google Play Store Deployment • Apple App Store Deployment • TestFlight Distribution • Play Console Management • Store Compliance & Release Support ━━━━━━━━━━━━━━━━━━━━━━━ WHY CLIENTS WORK WITH ME ━━━━━━━━━━━━━━━━━━━━━━━ ✅ 100% Job Success Score ✅ Apps used by 1,000+ active users ✅ Real Enterprise Development Experience ✅ Clean, Scalable & Maintainable Code ✅ Fast Communication & Reliable Delivery ✅ Long-Term Collaboration Mindset ━━━━━━━━━━━━━━━━━━━━━━━ TECH STACK ━━━━━━━━━━━━━━━━━━━━━━━ Flutter • Dart • Firebase Node.js • REST APIs MongoDB • PostgreSQL • MySQL OpenAI • Stripe AWS • Git • Docker ━━━━━━━━━━━━━━━━━━━━━━━ If you need a Flutter developer to build, improve, deploy, or scale your mobile application, I'd be happy to help. Let's build something reliable, scalable, and production-ready.

  • Web Application
  • App Development
  • HTML
  • Android App Development
  • iOS Development
  • Web Development
  • Flutter
  • Dart
  • PHP
  • CSS 3
  • JavaScript
  • React
  • Bootstrap
  • Firebase
  • Firebase Realtime Database
  • AWS CloudTrail
  • AWS Cloud9
  • Amazon Web Services
  • React Native
  • Python
Naseef Athaur R.

Mawanella, Sri Lanka

$60/hr
5.0
59 jobs

🚀 𝗚𝗹𝗼𝗯𝗮𝗹𝗹𝘆 𝗧𝗿𝘂𝘀𝘁𝗲𝗱 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | Top Rated Plus | 8+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 My primary tech stack includes 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀 (𝗡𝗲𝘅𝘁.𝗷𝘀), 𝗮𝗻𝗱 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁, and I architect robust systems using 𝗔𝗪𝗦 𝗦𝗲𝗿𝘃𝗲𝗿𝗹𝗲𝘀𝘀 (𝗟𝗮𝗺𝗯𝗱𝗮, 𝗗𝘆𝗻𝗮𝗺𝗼𝗗𝗕, 𝗔𝗣𝗜 𝗚𝗮𝘁𝗲𝘄𝗮𝘆), 𝗚𝗖𝗣, 𝗮𝗻𝗱 𝗙𝗶𝗿𝗲𝗯𝗮𝘀𝗲 𝗖𝗹𝗼𝘂𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁. I'm highly focused on performance, reliability, clean code, and scalable architecture. Hi, I'm Naseef. As a 𝗙𝘂𝗹𝗹‑𝗦𝘁𝗮𝗰𝗸 𝗡𝗼𝗱𝗲.𝗷𝘀 & 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿, I specialize in developing high-performance, scalable, and cloud-native applications that solve real-world business problems. With 7+ years of hands-on experience, I build everything from 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝘄𝗲𝗯 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝘁𝗼 𝗖𝗵𝗿𝗼𝗺𝗲 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻𝘀 𝗮𝗻𝗱 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀, delivering production-ready solutions using the latest technologies. ✅ 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: - React.js (Hooks, Context API, Redux), Next.js, Angular, Vue.js - HTML5, CSS3, JavaScript (ES6/ES7), TypeScript 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: - Node.js, Express.js, Nest.js, Fastify - Google Apps Script 𝗖𝗹𝗼𝘂𝗱 & 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲: - AWS: Lambda, DynamoDB, API Gateway, S3, EC2, RDS, Cognito, Beanstalk, CloudWatch, CDK scripting - GCP & Firebase: Firestore, Cloud Functions, Cloud Storage, Firebase Auth Cloudflare: Workers, Pages, R2 - Docker, Kubernetes, GitHub Actions, Azure DevOps, Terraform, Serverless Framework 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: - PostgreSQL, MySQL, MongoDB, DynamoDB, Redis, Supabase-io 𝗔𝗜, 𝗟𝗟𝗠𝘀 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: - OpenAI/ChatGPT Integrations, LangChain, AWS Bedrock, Google Vertex AI - RAG systems, AI chatbots, LLM-backed automation - Scraping and automation: Puppeteer, Scrapy, Playwright, Stagehand 𝗖𝗵𝗿𝗼𝗺𝗲 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻𝘀 & 𝗜𝗼𝗧: - Chrome Extension Development - Raspberry Pi / Arduino-based automation & microservices 𝗧𝗼𝗼𝗹𝘀: Git, GitHub, Linux, Visual Studio Code, Postman, Figma, Jira, Trello 💡 𝗪𝗵𝘆 𝗛𝗶𝗿𝗲 𝗠𝗲? ✔ 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗩𝗲𝗿𝘀𝗮𝘁𝗶𝗹𝗶𝘁𝘆 I handle complete app development, frontend, backend, cloud, database, DevOps, and integration. ✔ 𝗖𝗹𝗼𝘂𝗱-𝗡𝗮𝘁𝗶𝘃𝗲 & 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 Expert in deploying AWS Serverless solutions and cloud applications on GCP & Firebase, using infrastructure-as-code and scalable architecture. ✔ 𝗢𝗽𝗲𝗻𝗔𝗜/𝗖𝗵𝗮𝘁𝗚𝗣𝗧 & 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 Proven ability to integrate LLM features, AI-driven workflows, and chatbot solutions using OpenAI, LangChain, and other GenAI tools. ✔ 𝗖𝗵𝗿𝗼𝗺𝗲 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Developed multiple Chrome extensions tailored to business and user needs with efficient APIs and cloud backends. ✔ 𝗦𝗮𝗮𝗦, 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 Experience building multi-tenant SaaS apps, secure payment integrations, and automated dashboards with real-time sync. ✔ 𝗧𝗲𝗮𝗺 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 & 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 Capable of working independently or leading teams. Strong communication skills and a collaborative mindset using agile methodologies. ✔ 𝗖𝗹𝗲𝗮𝗻 𝗖𝗼𝗱𝗲 & 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 I write clean, maintainable code and optimize systems for speed, stability, and cost-efficiency. 📈 𝗣𝗿𝗼𝘃𝗲𝗻 𝗥𝗲𝘀𝘂𝗹𝘁 ✅ Enterprise Dashboard – Built with React.js & AWS Lambda, boosting efficiency by 60% ✅ Chrome Extensions – Deployed productivity tools with 20K+ active users ✅ AI Document Parser – Integrated ChatGPT/LangChain, reducing manual work by 70% ✅ Serverless Migration – Shifted to AWS Lambda/DynamoDB, cutting costs by 40% ✅ Real-Time Collaboration Tool – Built with Firebase & React, improving team output by 35% ✅ SaaS Platform – Scaled on GCP & Supabase, supporting 50K+ users ✅ Next.js E-Commerce – Enhanced SEO, reducing bounce rate by 45% ✅ Automation Bot – Puppeteer + Cloudflare stack, saving 100+ hours/month 📩 Let’s build your next product with a rock-solid tech foundation Whether you're a founder, product owner, or CTO, I’ll help you deliver modern, scalable solutions with the right tools, right strategy, and real outcomes. Let’s connect! Full Stack Developer, Node.js Developer, React.js Developer, JavaScript Developer, TypeScript Developer, AWS Lambda Developer, Serverless Architecture, GCP Developer, Firebase Developer, Chrome Extension Developer, OpenAI Developer, ChatGPT Integration, AI Integration Developer, API Developer, SaaS Developer, Web Application Developer, Backend Developer, Frontend Developer, Cloud Application Developer, Next.js Developer, DevOps Engineer, Scalable Architecture #FullStackDeveloper #Nodejs #Reactjs #Nextjs #JavaScript #TypeScript #Serverless #AWSLambda #GCP #Firebase #OpenAI #ChatGPT #WebDevelopment #CloudNative #ChromeExtension #SaaS #APIIntegration #AIIntegration #SoftwareEngineer

  • Web Application
  • CSS
  • HTML
  • JavaScript
  • Node.js
  • React
  • MySQL
  • API
  • Next.js
  • Web Development
  • TypeScript
  • Front-End Development
  • API Integration
  • PostgreSQL
  • HTML5
Gallath Ralalage Dinuka S.

Nittambuwa, Sri Lanka

$15/hr
5.0
52 jobs

Hello Upwork Community! We are an experienced team of 50+ professional Software engineers, UI/UX engineers, Business analysts, Project Managers and Quality assurance engineers. We have over 5 years of expertise in the IT field, having developed websites and mobile applications. We create mobile applications and websites from scratch for individuals, small businesses, and corporations. We provide solutions in various industries including e-commerce, e-learning, banking, hospitality, booking platforms, and government projects. Whether it is a simple website or a complex solution like cloud cloud-based ERP system our team has the potential to deliver it. What our tech stack is? Front-end Development CSS/SCSS, HTML, JavaScript React JS Vue.js Angular Mobile Development Flutter React Native Swift Kotlin Backend Development PHP - Laravel Java - Spring Boot Python - Django NodeJS - Express Databases Firebase MYSQL, PostgreSQL MongoDB Other Power BI for dashboard design Adobe XD Figma Styling Tailwind CSS Ant Design Framer Motion Material-UI Our goal is to assist you in developing a website that goes above and beyond your expectations.For a free consultation, contact us right now!

  • Web Application
  • Web Development
  • Website
  • Web Portal
  • Website to Mobile App Conversion
  • Ecommerce Website Development
  • Corporate Website
  • Mobile App
  • Mobile App Development
  • Node.js
  • React
  • Spring Boot
  • Business Analysis
  • Microservice
  • Full-Stack Development
MOHAMED NAHAS N.

Puttalam, Sri Lanka

$35/hr
4.9
129 jobs

I have been working in the IT industry since 2011. Over the years, I have gained experience in designing websites, testing, and implementing applications using HTML, HTML5, CSS3, PHP, JavaScript, jQuery, AJAX, and WordPress (theme and plugin development). I also have experience in framework development, primarily with Laravel, CodeIgniter, and CakePHP. Additionally, I have developed eBay APIs, such as Trading, Finding, and Shopping, as well as Amazon Web Services (Amazon MWS).

  • Web Application
  • API Integration
  • PHP
  • WooCommerce
  • jQuery
  • API
  • Shopify Apps
  • AJAX
  • eBay API
  • RESTful API
  • eBay Web Services
  • OAuth
  • API Development
  • JSON
Ranmini E.

Avissawella, Sri Lanka

$10/hr
5.0
4 jobs

Looking for a professional Full-Stack Developer to build or rebuild your custom website into a modern, fast, and scalable solution? You’re in the right place. I’m Ranmini, a Full-Stack Developer with over 5 years of experience building high-performance, fully customized websites and web applications for startups and businesses. I help clients transform ideas into complete digital products that are well-structured, scalable, and user-friendly. I handle the full development process from planning and architecture to frontend, backend, and deployment, so you don’t need to manage multiple developers. My focus is to deliver clean, efficient, and maintainable solutions that perform well and support long-term growth. What can I help you with: Full-stack website development from scratch Rebuilding or upgrading existing websites Responsive and mobile-friendly UI development Backend development and API integration Payment gateway integration and e-commerce functionality Database design and optimization SEO-friendly structure and performance improvements Why do clients choose to work with me? Full ownership of the project from start to finish Clear and consistent communication throughout development Focus on performance, scalability, and clean architecture On-time delivery with a structured workflow Post-delivery support to ensure everything runs smoothly Technologies I work with? Frontend: HTML, CSS, JavaScript, React.js, Next.js, Bootstrap Backend: Node.js, .NET, Spring Boot Databases: MySQL, PostgreSQL, MongoDB If you’re looking for a reliable developer who can turn your idea into a complete, production-ready website, feel free to send me a message. I’d be happy to discuss your project and provide the right solution.

  • CSS
  • HTML
  • Full-Stack Development
  • Custom Web Design
  • React
  • Node.js
  • JavaScript
  • Front-End Development
  • Back-End Development
  • Web Application Development
  • REST API
  • API Integration
  • Web Development
  • Ecommerce Website
  • Design Enhancement
SAC B.

Galle, Sri Lanka

$15/hr
5.0
9 jobs

I specialized in planning, designing, and building web applications. If you need a web system or website developed for yourself or your organization, I can do that for you too. I will listen to your requirements carefully, suggest a good solution, and proceed to make it a reality for you. I will not bore you with technical jargon, but I will make use of the latest and most remarkable technologies available to build your proposed system or website. I will jump into your shoes and look at your requirements from your point of view. It is very important for me to see my client's businesses succeed and their goals being fulfilled. The reason is that that is the only way my clients will return to me and refer their friends and family to me. I am friendly with my customers and I expect to work with friendly customers. I am honest about what I can and can't do and would not hesitate to tell you which. I consider each and every project I take on as my own, and work to see a successful completion. It has allowed me to maintain a high success rate in other skill marketplaces, and I strive to do the same in Upwork. SKILLS: - Microservices - API Integrations - API Development - API Management - Web Application Development - Database Management - Web Design and Development - Ecommerce Development - Linux Server management Programming, Database, and Markup : - OOP Languages (PHP) - Laravel PHP Framework - Angular JavaScript Framework - MySql, Postgresql - JavaScript/ Jquery - Bootstrap Responsive Framework - HTML5/CSS3/ Tailwind CSS, Vue js Cloud Vendors : - Digital Ocean - Amazon Web Services - Bluehost - Hostgator Content Management Systems: - WordPress - Prestashop - WooCommerce Version Control with GIT, Github, and Gitlab

  • Bootstrap
  • Web Development
  • Laravel
  • PHP
  • API Development
  • Android App
  • Linux System Administration
  • DigitalOcean
  • Flutter
  • React Native
  • Next.js
  • React
  • iOS
  • AWS Systems Manager
  • Stripe

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