Upwork home
Sign up
Secondary

Hire the best JavaScript Developers in Sri Lanka

Check out JavaScript Developers in Sri Lanka with the skills you need for your next job.
Get started
Clients rate JavaScript developers
Rating is 4.8 out of 5.
4.8/5
based on 460 client reviews
  • $40 hourly
    • 5.0/5
    • (61 jobs)
    Hi there! 👋 I'm Ashen Iranda, your go-to full-stack developer for creating exceptional digital solutions. With a passion for technology and a knack for problem-solving, I am dedicated to bringing your projects to life with precision and creativity. My goal is to deliver not just an application, but a solution that exceeds your expectations and helps your business thrive.
 Why Choose Me? 🔹 Client-Centric Approach: I prioritize your vision and needs, ensuring that every project is tailored to meet your specific requirements. Your success is my success, and I am committed to providing a seamless and enjoyable development experience.
 🔹 Proven Track Record: With years of experience and a diverse portfolio, I have helped numerous clients turn their ideas into reality. My work speaks for itself, and my client's satisfaction is a testament to my dedication and expertise.
 🔹 Exceptional Communication: I believe in transparent and effective communication. From project inception to delivery, I keep you informed every step of the way, ensuring that you are always in the loop.
 🔹 Passion for Innovation: Technology is ever-evolving, and so am I. I stay updated with the latest trends and advancements to ensure that your projects are built using cutting-edge technologies and best practices.
 Technical Expertise 🔹 Full-Stack Development: Specializing in both front-end and back-end development, I use technologies like ReactJs, NextJs, NodeJs, and Spring Boot to create robust and scalable applications. 🔹 Frontend Technologies: Expertise in ReactJs, NextJs, Angular, and Tailwind CSS allows me to build stunning and responsive user interfaces that provide an exceptional user experience. 🔹 Backend Technologies: Proficient in NodeJs, Java Spring Boot, Express, and more, I handle complex back-end challenges with ease, ensuring your application's logic is solid and reliable. 🔹 Database Management: Skilled in MongoDB, MySQL, PostgreSQL, and Firebase, I ensure your data is stored securely and efficiently, with optimal performance. 🔹 Cloud Solutions: Leveraging AWS (EC2, S3, Lambda, Amplify), Azure, and GCP, I deploy and manage scalable, secure cloud-based applications. 🔹 Blockchain and Smart Contracts: Specializing in NEAR (AssemblyScript), Solidity, and ICP, I deliver innovative blockchain solutions that are secure and future-proof. 🔹 Performance Optimization: Utilizing Redis, Docker, CI/CD, and clustering techniques, I optimize your application's performance, ensuring it runs smoothly and efficiently. Experience Highlights Throughout my career, I've had the opportunity to work on various impactful projects. I've developed advanced IoT dashboard solutions that streamlined operations and enhanced user engagement, led the development of comprehensive healthcare web applications, ensured robust functionality and a seamless user experience, and upgraded and optimized travel-related software, significantly improving their performance and compatibility. Additionally, I evaluated and enhanced smart contracts on blockchain platforms, ensuring top-notch security and efficiency. I've designed and implemented interfaces tailored to the unique needs of various industries, including the restaurant sector. By combining my extensive experience in full-stack development, cloud solutions, and blockchain integration, I offer a skill set that covers a broad spectrum of technologies essential for creating modern, high-performance applications. My expertise in ReactJs, NextJs, NodeJs, Spring Boot, and AWS ensures that your project will be in capable hands, from initial concept to final deployment. If you're searching for a skilled and reliable engineer to bring your project to life, look no further. Let's connect and discuss how we can make your project a resounding success. Best regards,
 Ashen Iranda 👨🏽‍💻
    Featured Skill JavaScript
    Application Improvement
    MERN Stack
    AWS Development
    Redux
    MySQL
    API Integration
    Next.js
    Spring Boot
    Java
    Web Development
    ExpressJS
    MongoDB
    React
    Node.js
  • $35 hourly
    • 5.0/5
    • (12 jobs)
    Hi! My name is Nuwan and I have ~5 years of experience in designing, developing, and deploying websites, web applications & custom cloud software. I am well versed in React, Redux, Next.js, Gatsby, and building out REST APIs using technologies like Node.Js and Express. I have worked on various projects ranging from small-scale websites to complex enterprise solutions. As a Fullstack Javascript Developer, I am comfortable in both front-end and back-end tech! I have experience working with Node.js, GraphQL, and different databases, including PostgreSQL, MongoDB, Firebase, Supabase, and a bit of Redis. I am also quite familiar with deployment and DevOps tools such as Google Cloud Platform, Digital Ocean, Heroku, and Netlify, Vercel and have experience with setting up CI/CD pipelines.
    Featured Skill JavaScript
    GraphQL
    Jest
    NodeJS Framework
    Firebase
    React
    CI/CD
    Next.js
    RESTful API
    Gatsby.js
    Web Application
    Web Development
    Social Media Account Integration
    Mobile UI Design
    Web Design
  • $40 hourly
    • 4.7/5
    • (16 jobs)
    I specialize in building everything from small web applications to complex, fault-tolerant, highly available, and low-latency distributed systems. With a deep understanding of concurrent and parallel programming, I design efficient, scalable, and robust architectures. 🔹 What I Bring: ✅ Expertise in Scala, Rust, and React, along with modern backend and frontend technologies ✅ Strong grasp of distributed computing, event-driven architectures, and actor-based systems ✅ Experience with fault tolerance, resilience, and high availability ✅ Writing highly maintainable, clean, and well-structured code Whether you need a real-time web app, a scalable microservices architecture, or a high-performance backend, I can deliver production-ready solutions optimized for speed, reliability, and maintainability. Let’s build something great together! 🔥
    Featured Skill JavaScript
    Apache Flink
    Functional Programming
    Distributed Computing
    Data Science
    AWS Lambda
    Docker
    Scala
    Node.js
    C++
    HTML
    Web Development
    Akka
    CSS
    Rust
  • $40 hourly
    • 5.0/5
    • (49 jobs)
    ⭐️ "𝑺𝒂𝒇𝒌𝒊 𝒊𝒔 𝒕𝒉𝒆 𝒌𝒊𝒏𝒅 𝒐𝒇 𝒑𝒆𝒓𝒔𝒐𝒏 𝒘𝒉𝒐 𝒕𝒓𝒖𝒍𝒚 𝒑𝒖𝒕𝒔 𝒉𝒊𝒔 𝒉𝒆𝒂𝒓𝒕 𝒂𝒏𝒅 𝒔𝒐𝒖𝒍 𝒊𝒏𝒕𝒐 𝒉𝒊𝒔 𝒘𝒐𝒓𝒌. 𝑯𝒆'𝒔 𝒏𝒐𝒕 𝒋𝒖𝒔𝒕 𝒂𝒃𝒐𝒖𝒕 𝒈𝒆𝒕𝒕𝒊𝒏𝒈 𝒕𝒉𝒆 𝒋𝒐𝒃 𝒅𝒐𝒏𝒆; 𝒉𝒆'𝒔 𝒂𝒃𝒐𝒖𝒕 𝒎𝒂𝒔𝒕𝒆𝒓𝒊𝒏𝒈 𝒘𝒉𝒂𝒕𝒆𝒗𝒆𝒓 𝒕𝒐𝒐𝒍 𝒐𝒓 𝑨𝑷𝑰 𝒊𝒔 𝒏𝒆𝒆𝒅𝒆𝒅 𝒕𝒐 𝒎𝒂𝒌𝒆 𝒔𝒖𝒓𝒆 𝒆𝒗𝒆𝒓𝒚𝒕𝒉𝒊𝒏𝒈 𝒓𝒖𝒏𝒔 𝒑𝒆𝒓𝒇𝒆𝒄𝒕𝒍𝒚. 𝑰𝒕'𝒔 𝒕𝒉𝒂𝒕 𝒍𝒆𝒗𝒆𝒍 𝒐𝒇 𝒅𝒆𝒅𝒊𝒄𝒂𝒕𝒊𝒐𝒏 𝒂𝒏𝒅 𝒕𝒉𝒆 𝒒𝒖𝒂𝒍𝒊𝒕𝒚 𝒐𝒇 𝒉𝒊𝒔 𝒘𝒐𝒓𝒌 𝒕𝒉𝒂𝒕 𝒎𝒂𝒌𝒆𝒔 𝒎𝒆 𝒍𝒐𝒐𝒌 𝒇𝒐𝒓𝒘𝒂𝒓𝒅 𝒕𝒐 𝒘𝒐𝒓𝒌𝒊𝒏𝒈 𝒘𝒊𝒕𝒉 𝒉𝒊𝒎 𝒂𝒈𝒂𝒊𝒏 𝒊𝒏 𝒕𝒉𝒆 𝒇𝒖𝒕𝒖𝒓𝒆. 𝑺𝒂𝒇𝒌𝒊 𝒓𝒆𝒂𝒍𝒍𝒚 𝒎𝒂𝒌𝒆𝒔 𝒂 𝒅𝒊𝒇𝒇𝒆𝒓𝒆𝒏𝒄𝒆, 𝒂𝒏𝒅 𝒊𝒕'𝒔 𝒄𝒍𝒆𝒂𝒓 𝒉𝒆 𝒄𝒂𝒓𝒆𝒔 𝒅𝒆𝒆𝒑𝒍𝒚 𝒂𝒃𝒐𝒖𝒕 𝒕𝒉𝒆 𝒘𝒐𝒓𝒌 𝒉𝒆 𝒅𝒐𝒆𝒔." — Feedback from a satisfied Upwork client --- As an experienced developer specializing in web applications, automation, scripting, and web scraping, I’m passionate about solving complex problems and delivering tailored solutions that meet your specific needs. 𝐒𝐄𝐑𝐕𝐈𝐂𝐄𝐒: - 𝐖𝐞𝐛 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Creating custom web apps, Chrome extensions, and static websites with integrated APIs using frameworks like Astro, Next.js or Remix. - 𝐃𝐞𝐬𝐤𝐭𝐨𝐩 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬: Delivering custom software to simplify tasks and improve productivity. - 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐒𝐜𝐫𝐢𝐩𝐭𝐢𝐧𝐠: Enhancing efficiency through intelligent automation. - 𝐖𝐞𝐛 𝐒𝐜𝐫𝐚𝐩𝐢𝐧𝐠: Extracting valuable insights and data from the web. 𝐇𝐈𝐆𝐇𝐋𝐈𝐆𝐇𝐓𝐒: - 𝐏𝐫𝐨𝐯𝐞𝐧 𝐂𝐥𝐢𝐞𝐧𝐭 𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧: A track record of successful projects and happy clients. - 𝐒𝐭𝐫𝐨𝐧𝐠 𝐏𝐫𝐨𝐛𝐥𝐞𝐦-𝐬𝐨𝐥𝐯𝐢𝐧𝐠 𝐒𝐤𝐢𝐥𝐥𝐬: Adept at tackling challenges and providing effective solutions. - 𝐄𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧: Ensuring 𝐂𝐋𝐄𝐀𝐑 𝐔𝐍𝐃𝐄𝐑𝐒𝐓𝐀𝐍𝐃𝐈𝐍𝐆 and seamless collaboration. - 𝐂𝐥𝐢𝐞𝐧𝐭-𝐂𝐞𝐧𝐭𝐫𝐢𝐜 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡: Your satisfaction and success drive every project. - 𝐐𝐮𝐢𝐜𝐤 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠: Quick adaptation to new technologies for timely delivery. Feel free to message me anytime! Let’s collaborate to transform your tech ideas into reality. --- 𝐅𝐞𝐰 𝐌𝐨𝐫𝐞 𝐖𝐨𝐫𝐝𝐬 𝐟𝐫𝐨𝐦 𝐔𝐩𝐰𝐨𝐫𝐤 𝐂𝐥𝐢𝐞𝐧𝐭𝐬: ⭐️Automate Job board inquiries: "Safki is a very talented person and very easy to work with. He will go above and beyond what is just required and will work to solve problems you might not even be considering. He is a critical thinker and you can tell he enjoys helping others and sharpening his skills. I HIGHLY recommend working with Safki." ⭐️AIML Review: "We consulted with Safki on how to use AIML effectively to create a complex dialogue. Safki was professional, knowledgeable, and responded very quickly. We were so impressed we gave him a bonus. We will use him again and recommend him to others." ⭐️Transfer Calender events: "Safki created a script to transfer my google calendar event to another account, not only he worked hard to ensure his script exactly covers the detailed request i made, he also ensured that I understand them well and was grateful to his attention to detail and consideration. I would definitely recommend him. thank you!" ⭐️ Running Tracker automation: "I had the pleasure of reaching out to Safki for an automation script, and for the third time, he delivered impeccable results in just a couple of days! His efficiency and attention to detail are unmatched. Excellent work, Safki! Thank you for your continued dedication and expertise!" ⭐️ Chrome extension OAUTH Issue: "After spending 3 hours trying to find the problem, I hired Safki and he found it immediately. Great work!!" --- 𝑷𝑺: 𝑾𝒊𝒕𝒉 𝒂 𝒑𝒓𝒐𝒗𝒆𝒏 𝒕𝒓𝒂𝒄𝒌 𝒓𝒆𝒄𝒐𝒓𝒅 𝒐𝒇 𝒔𝒖𝒄𝒄𝒆𝒔𝒔, 𝑰'𝒎 𝒅𝒆𝒅𝒊𝒄𝒂𝒕𝒆𝒅 𝒕𝒐 𝒅𝒆𝒍𝒊𝒗𝒆𝒓𝒊𝒏𝒈 𝒉𝒊𝒈𝒉-𝒒𝒖𝒂𝒍𝒊𝒕𝒚 𝒓𝒆𝒔𝒖𝒍𝒕𝒔 𝒕𝒉𝒂𝒕 𝒆𝒏𝒔𝒖𝒓𝒆 𝒀𝑶𝑼𝑹 𝒔𝒂𝒕𝒊𝒔𝒇𝒂𝒄𝒕𝒊𝒐𝒏 𝒂𝒏𝒅 𝒔𝒖𝒄𝒄𝒆𝒔𝒔. Thank you, Safki A.
    Featured Skill JavaScript
    Browser Extension
    Node.js
    Bash
    Mathematics
    REST API
    GraphQL
    Python
    Web Analytics
    C++
    Web Scraping
    Desktop Application
    Scripting
    Automation
    Web Development
  • $35 hourly
    • 5.0/5
    • (11 jobs)
    A low-level system programmer mainly dabbling in C/C++ and x86 assembly with an expertise on bare-metal programming, optimization and firmware development. While low-level programming/designing being my main area of expertise, can additionally provide services related to web back-end development, custom desktop and mobile application development and hardware designs (VHDL/Verilog).
    Featured Skill JavaScript
    Internet of Things
    X86 Assembly Language
    Firmware
    AWS Development
    Node.js
    Angular
    C#
    VHDL
    Ada
    C
    C++
  • $55 hourly
    • 5.0/5
    • (170 jobs)
    "Helping to setup BULLETPROOF Google Analytics Implementations you can TRUST". If you are looking to gather business intelligence & make smart data driven decisions using Google Analytics for your business OR to improve the current setup & quality of your Google Analytics data & get more value from your Google Analytics, you've landed exactly at the right place. As a GA Qualified Individual & Google Tag Manager Expert with over 8 years of experience under my belt, I specialize in Advanced Google Analytics Implementations using Google Tag Manager on the platforms below: • Wordpress/WooCommerce • Shopify • Magento • Prestashop • Squarespace • Cratejoy • AngularJS • And other various custom web platforms And I'll be glad to assist you in implementing/fixing the following GA/GTM tracking solutions: • Implementation & configuration of GA/GTM following industry best practices • Goal conversion tracking (macro & micro conversions) & goal funnel setup • Event tracking setup to track user engagement activities: ­** File downloads tracking ­** Sign-up tracking ** Video engagement tracking (Youtube/Vimeo) ** Phone call tracking ** Scroll tracking etc... • Form submission & engagement tracking (Contact Form 7/Gravity Forms/AJAX Forms etc...) • Ecommerce & Enhanced Ecommerce setup • Cross-domain tracking • Cross device tracking/User ID Implementation • Implementation of custom dimensions, metrics & calculated metrics • Integration of other Google products (Adwords/Search Console/Adsense etc…) • Setup & integration of 3rd party tools (FB/Bing/Hotjar/Heap/Segment/AdRoll/Mixpanel etc…) • Conversion tracking & remarketing setup (Adwords/Facebook Pixel/Bing) • Basic & advanced filter setup & configuration • Implementation of ghost/crawler & referral spam prevention filters • Setup & configuration of advanced segments • Custom dashboards & reports setup --- Few reviews from my Upwork clients: "Ahamed is an advanced Analytics expert. He has setup multiple GTM and GA accounts, with advanced segments, goals, Adwords linking, Search Console plus many other technical elements of Analytics. I would highly recommend him to anyone wanting analytics setup and configuration." "Ahamed is amazing and knows Google analytics inside and out. Great communicator who takes the time to walk you through all the work and brain storm approaches to challenges you face. I highly recommend him." "Ahamed has been key to numerous successful projects. He's very diligent, action-orientated, attentive and proactive in solving challenges throughout the projects. Highly Recommend! Thank you and well done." "Ahamed was - by far - the best freelancer that I ever contracted. From being efficient (fast) to also being truly concerned with MY business, he is a professional that I could trust 100%. Perfect communication that makes the client clarified and confident of the work. Thanks Ahamed!" --- Here's what I'd like you to do next: If you are looking to: • Implement GA/GTM from scratch for your new/existing websites • Tweak & improve your current GA/GTM setup to get the most out of Google Analytics • Troubleshoot GA/GTM issues that are present on your website • Have a complete audit performed of your GA/GTM setup INVITE ME TO YOUR JOB!!! And I’ll get in touch with you to hear more about what you need.
    Featured Skill JavaScript
    Marketing Analytics
    Internet Marketing
    Google Ads
    Data Analysis
    Google Analytics API
    Microsoft Power BI
    Web Analytics
    Google Tag Manager
    Google Analytics
  • $85 hourly
    • 4.8/5
    • (50 jobs)
    Specialized in AWS Technologies and Cost Optimization. I have significant expertise in the following stacks. 1. Nginx / PHP / MySQL - Performance Optimizations, Bug Fixes 2. Golang / Angular - High throughput scalable applications 3. Laravel / PHP - Long term experience of 12 years.
    Featured Skill JavaScript
    Network Administration
    Database Design
    Database Maintenance
    Solution Architecture Consultation
    Web Service
    Cloud Computing
    Database
    Serverless Computing
    AWS Lambda
    Amazon Web Services
    Golang
    Amazon DynamoDB
    PHP
    GraphQL
  • $75 hourly
    • 4.9/5
    • (167 jobs)
    Are you ready to take your online presence to the next level? Look no further! As a member of the Squarespace Circle, a community of creative professionals, I have the expertise to build a premium website that showcases what makes you or your brand unique and achieves your strategic goals. With a track record of working with a variety of clients, from large companies to small startups, I have the experience to create an engaging and stunning website that stands out and drives results. Don't miss this opportunity to elevate your online presence – contact me today and let's get started on building the website of your dreams! 🔷 Squarespace services 🔷 ✔️ Squarespace Design and Development ✔️ Custom coding ✔️ Website content strategy ✔️ Mobile responsive design ✔️ Commerce & Scheduling ✔️ Squarespace Member Areas ✔️ Domain mapping ✔️ Squarespace Search Engine Optimization ✔️ Integrate third-party applications ✔️ Squarespace Training ✅ You'll also get a 20% off Squarespace discount code for your first year of hosting. 🔷 Other services 🔷 ✔️ Develop mobile responsive websites in Webflow, Shopify and Wix ✔️ Website development (HTML5/CSS and Bootstrap)
    Featured Skill JavaScript
    Shopify
    Webflow
    Wix
    Search Engine Optimization
    Kajabi
    Squarespace
    Web Design
    UX & UI
    Web Development
    CSS
    CSS 3
    HTML5
    HTML
    Ecommerce Website
  • $80 hourly
    • 4.9/5
    • (282 jobs)
    🏆 Upwork Top Verified Web Developer for ✅ Custom WordPress Site Development ,....✅ WordPress Theme Development ✅ WordPress custom plugin Development,..✅ WordPress Theme Customization ✅ Plugin Customization,.....................................✅ WooCommerce Theme Development ✅ WooCommerce Customization ,..................✅ API Integration and more ... I am a WordPress developer (Top-rated Upworker with 270+ completed projects and almost 3400 hours of work) specializing in converting designs into websites and I can transform your design into a successful high-quality WordPress-based website. Or, if you already have a premium theme, I can set it up for you. I’m also experienced with Page Builders within WordPress like Elementor, WP Bakery and Divi. Other WordPress services which I can do for you are: ✔ Installation, Customizations (Add content, menu/page or widgets, Change color, Background, Logo/ Favicon or any CSS changes), Updates ✔ Set up an online shop with WooCommerce (eCommerce solution) ✔ Custom Theme Development ✔ Website maintenance. and much more. I would like to have an opportunity to collaborate with you and help you bring your product to life! Over several years of experience with web development, Web & Mobile Design, Mobile Development, and Desktop Software Development using Scripts & Utilities. finally, I also do QA & Testing. So I'm good at C# , ASP.NET,PHP, CSS,Java Scripting, JQuery ,ExtJS , GWT, ,AJAX,MVC,WordPress,MSSQL,MYSQL,Oracle,Informix, Crystal Reports, , IIS, Apache, VSS, SVN, CVS ------------- WHY ME --------------- + WordPress Theme and Plugin Expert + 3400+ hours on Up-work. + 270+ jobs on Up-work. + Experience more than 12 year in "Web / Windows Application Development" + Creative mind. + Huge portfolio. + Time is money So I don't want to waste your and also mine. + Full availability. + Free of charge consultation. -------------------And also I'm good at ------------------------------ Game Development Mobile Development Product Management QA & Testing Scripts & Utilities
    Featured Skill JavaScript
    WordPress Bug Fix
    WordPress
    WordPress Optimization
    WordPress Multisite
    ASP.NET
    API Integration
    PHP
    WordPress Migration
    WooCommerce
    Divi
    React
    HTML
    WordPress Plugin
    Web Design
    Platform Plugin
    WordPress Theme
    CSS
    Elementor
    C#
    Mobile App Design
  • $25 hourly
    • 5.0/5
    • (21 jobs)
    ❇️ 100% Client Recommendation ❇️ 100% Job Success Score ❇️ Job History with 200+ Upwork Hours ❇️ 5+ Years of Web Development Experience ❇️ 3+ Years Python Scripting Experience H!, I am Front End and Back End Web Development Specialist with more than 3+ years of experience. An enthusiastic, results-driven Font End Specialist, User Interface Engineer and web specialist. Quick to grasp new ideas and concepts, and to develop innovative and creative solutions to problems. A proven track record of completing various complicated projects in a timely manner to produce secure, effective designs for clients. ✅ 3+ years of professional experience in Front End and Back End Development ✅ 25+ Web projects completed between 2016 and 2019 My development strengths are: • VueJS • Javascript (ES5 to ES 10) • JQuery • HTML5/ CSS3 (Bootstrap 3/4) • PHP (Laravel, Lumen) • Wordpress • Micro-services • Service-Oriented Architecture (SOA) • Version Control (Git) ✔ PYTHON SCRIPT WRITER Experienced Python Script Writer with deep knowledge of data analysis, visualization, machine learning and AI. Good knowledge of the Django framework to build website running Python as back-end. Skills include web scraping, data analysis, automation, web development and data mining. ✅ 1+ years of Python Script Writing experience ✅ 10+ Python Scripting and Web Scraping project completed between 2018 and 2019 My scripting strengths are: • Python 2/3 • Django (Web Backend) • NLTK (Data Mining, Data Analysis) • Beautiful Soup (Web Scraping) ➔ Online 50+ hours per week ➔ Detailed plans with timelines, Daily reporting ➔ Available for voice chat or screen share anytime
    Featured Skill JavaScript
    UX & UI
    Web UI
    Elementor
    Vue.js
    PHP
    Mobile UI Design
    Python Script
    PSD to HTML
    Web Design
    WordPress
    WordPress e-Commerce
    WooCommerce
    Responsive Design
    PSD to WordPress
    Social Media Marketing
  • $22 hourly
    • 5.0/5
    • (17 jobs)
    Hi! I'm a Software Engineer from Sri Lanka. My domain knowledge and practice currently is highly focused on, 🐍 Python (FastAPI, Pure Python) development and AI development 💻 Full-stack web app development with React.js, Next.js, Node.js, NestJS, PostgreSQL, MongoDB. ☁️ Cloud engineering including Kubernetes, Docker, Serverless, Azure, AWS, Digital Ocean 📱 Mobile app development with Flutter framework. I'm fluent in Agile methodologies and leadership is a key characteristic I'm constantly improving on. I'm very happy to start working with you.
    Featured Skill JavaScript
    Web Application
    CSS
    API
    Git
    iOS
    Android
    Firebase
    Node.js
    Mobile App Development
    React
    Flutter
    Amazon Web Services
    Dart
    Push Notifications
  • $20 hourly
    • 5.0/5
    • (6 jobs)
    Web development is about turning ideas into powerful online solutions. With over 8 years in the industry, I specialize in Vue and Laravel to build top-notch web applications. Hello! I'm Sameera, a dedicated full-stack developer and the founder of CyberElysium (Pvt) Ltd in Sri Lanka. - I build robust social networks, payment gateways, fleet management ERPs, and e-commerce platforms. - I develop professional, responsive websites that match your brand. - I develop reliable backend systems using Laravel, Livewire, and Inertia.js. - I craft engaging user interfaces with HTML5, CSS3, JavaScript, and advanced Vue.js frameworks like Nuxt.js and Inertia. - I offer comprehensive solutions across domains like e-commerce, ERP, CRM, and POS systems. - I provide mobile development services using Flutter, SwiftUI, and Kotlin. - I ensure seamless deployment and performance on platforms like AWS, DigitalOcean, and VPS. - I maintain the highest quality standards through rigorous testing with PHPUnit and Jest. - I do any kind of custom web development. My Role as a Leader: As the founder of CyberElysium, I lead a dedicated team of over 20 professionals, including more than 12 developers, committed to delivering tailor-made solutions that meet and exceed client expectations. Why Work with Me? I bring more than technical expertise; I offer a commitment to excellence and a passion for solving complex challenges. I adapt and scale resources to meet your project demands, providing the expertise of my team to enhance your projects. Whether you're seeking a skilled web development expert or the support of an experienced team for larger projects, I'm here to bring your vision to life. Mobile Development (Flutter, SwiftUI, Kotlin) Web Development -- Front-end (Vuejs, Nuxtjs, Inertiajs) -- Back-end (Laravel, Go) Let's connect and discuss how we can collaborate to achieve your goals with the expertise and resources of CyberElysium and my dedication to excellence in development.
    Featured Skill JavaScript
    Web Development
    Website
    Nuxt.js
    Custom Web Design
    Back-End Development
    Front-End Development
    Payment Gateway Integration
    MySQL
    Laravel
    Inventory Management
    Vue.js
    API
    Ecommerce Website
    PHP
  • $15 hourly
    • 5.0/5
    • (9 jobs)
    🏆 Full-Stack Web Developer | SaaS | Custom Apps | Business Automation Need a reliable developer to bring your idea to life, automate a manual process, or build a scalable web application? With over 6 years of experience and a 100% Job Success Score, I specialize in custom web solutions that help businesses work smarter, grow faster, and save time. I’ve delivered high-impact web apps, dashboards, and automation tools — including ERP systems and e-commerce platforms — for clients like Lions Club and fast-growing startups. 🎯 What I Can Build for You: ✅ Custom Web Applications (Dashboards, Admin Panels) ✅ SaaS Platforms (From MVP to Scalable Product) ✅ E-commerce Sites (Shopify, WooCommerce, Custom) ✅ Business Automation Tools (CRM, ERP, Booking Systems) ✅ API Integrations (Stripe, PayPal, External Services) ✅ Custom CMS Solutions & Lead Gen Tools 🛠️ Tech I Use: Backend: Laravel, CodeIgniter, PHP, Nodejs, Express, MySQL Frontend: React, Vue.js, Angular, jQuery, Tailwind, Bootstrap Other: REST APIs, Git, Server Deployment 💡 Why Clients Hire Me: 🔧 Tailored solutions — no cookie-cutter code 🚀 Fast delivery — I move quickly without sacrificing quality 📈 Business-first mindset — I solve your actual problem 🤝 Clear communication and dependable support Let’s discuss how I can help you automate, streamline, or launch something great
    Featured Skill JavaScript
    Automation
    Web Application
    Dashboard
    Node.js
    SaaS Development
    Web Application Development
    Theme Customization
    Liquid
    Shopify Development
    API Integration
    Web Development
    CSS
    Laravel
    PHP
  • $15 hourly
    • 5.0/5
    • (9 jobs)
    Hi! My name is Pasan, pleased to meet you. Full Stack Developer I'm a Full stack developer, passionate about JavaScript (React, React Native, Angular, NodeJS, MEAN/MERN stack development...) and with a big PHP experience (CodeIgniter and Laravel). An result oriented individual with a passion for learning and self improvement. Front-end experience: HTML5 / CSS3, JavaScript, jQuery, AJAX, Json, Bootstrap, Angular, React, Vue.js. Back-end experience: Node.js, PHP And PHP frameworks (CodeIgniter and Laravel), Web API Other experience: Azure, Git, AWS and cloud solutions. ------------------------------------------------------------------------------------------------------------- WordPress Developer I'm a web developer with more than 5 years of experience that specializes in WordPress, WooCommerce and WordPress plugins. Experience in plugins: - Elementor Pro, WPBakery, visual composer, - Dokan, WC Vendors - WooCommerce - Paypal plugin, Stripe and any kind of payment gateway - Slider Revolution, Yoast SEO, WP Rocket, WMPL, Contact Form 7, Gravity forms - WP Job Manager, WP Event Manager, Ultimate Membership, Wordpress Google Analytics and many more. -------------------------------------------------------------------------------------------------------------- Web3 Development Design and Create NFT collections NFT Game development NFT website and NFT related all services Blockchain development Token Creating
    Featured Skill JavaScript
    NFT
    Illustration
    Digital Art
    Web Design
    2D Illustration
    NFT Collection Generation
    NFT Character
    WooCommerce
    Character Design
    NFT Art
    Node.js
    WordPress
    Bootstrap
    React
  • $25 hourly
    • 5.0/5
    • (13 jobs)
    🚀 Welcome to My Upwork Profile! I’m a Top-Rated Senior UI & Full-Stack Engineer with over 1300+ hours of successful Upwork projects and a decade of experience in front-end and full-stack development. Originating from Sri Lanka, I specialize in crafting high-performance web applications with cutting-edge technologies. 💡 My Expertise: ✔ Front-End Development – HTML5, CSS3, SCSS, SASS, LESS, Tailwind CSS, Bootstrap 4/5, Responsive Design, BEM Methodology ✔ JavaScript Ecosystem – Angular (4+), AngularJS, React/Redux, Next.js, Redux, Zustand, RxJS, TypeScript, ES6, WebSocket, REST APIs ✔ Back-End Development – Node.js, Express.js, Firebase, MongoDB, PostgreSQL ✔ Generative AI & AI Integration – OpenAI (ChatGPT), LangChain, LangGraph ✔ Real-Time & Cloud Services – WebSocket, Firebase, AWS 🔥 What I Bring to the Table: 🔹 Full-Cycle Development – From ideation to complex UI applications 🔹 Seamless AI Integration – Enhancing user experiences with Generative AI 🔹 Scalable & Performance-Optimized Solutions – Ensuring speed, security, and responsiveness 🔹 Team Collaboration & Leadership – Supporting teams and mentoring developers 📩 Let’s Build Something Amazing! If you’re looking for a dedicated developer to bring your project to life with modern UI, full-stack expertise, and AI-driven solutions, let’s connect!
    Featured Skill JavaScript
    Adobe XD
    Figma
    Web Development
    CSS 3
    AngularJS
    Redux
    HTML
    Angular
    Adobe Photoshop
    Sass
    Bootstrap
    TypeScript
    React
    WordPress
  • $23 hourly
    • 5.0/5
    • (5 jobs)
    Hello! Welcome to my profile. I am a highly adaptable professional offering a diverse range of skills and expertise across multiple domains. With a proven track record and 4+ years of experience, I specialize in providing top-quality solutions tailored to meet your unique project needs. Game Development Expertise: My core expertise lies in mobile game development, crafting engaging and optimized gaming experiences across iOS, Android platforms and Web browsers. I excel in creating various game genres, including puzzles, arcades, educational games, and more, ensuring lightweight, fast, and performance-driven outcomes. Creative Design & Beyond: In addition to game development, I am proficient in offering creative design solutions encompassing UI/UX design, interactive experiences, and software solutions. My goal is to deliver innovative and seamless solutions that align precisely with your project objectives. Key Skills & Collaborative Approach: Proficient in Game development, Designing, and Full stack development. Emphasize strong collaboration and communication skills to ensure client satisfaction across diverse projects. Adaptable to varying project scopes and dedicated to delivering high-quality results within specified deadlines. I am passionate about transforming ideas into reality and dedicated to exceeding expectations. Whether you require a new game concept, creative design solutions, or a unique project that bridges multiple domains, I am here to provide exceptional services and ensure a smooth and efficient collaboration. Let's discuss your project vision and explore how I can contribute to realizing your goals. Feel free to reach out for further inquiries or to initiate our collaboration today!
    Featured Skill JavaScript
    3D Game Art
    2D Animation
    2D Game Art
    Spine 2D
    In-App Subscription
    In-App Purchases
    In-App Advertising
    Firebase
    Spring Boot
    C#
    Unity
    PixiJS
    Game Design
    Game Development
  • $15 hourly
    • 5.0/5
    • (9 jobs)
    Experienced in crafting high-quality, fully responsive websites with a focus on: HTML & CSS: Meticulous design implementation for pixel-perfect results. JavaScript & jQuery: Seamless interactivity and dynamic user experiences. Ghost CMS Themes: Specialized in creating tailored themes for Ghost CMS. Achievements: Delivered numerous successful projects, showcasing adaptability and commitment to quality. Expertise in maintaining up-to-date industry standards for cutting-edge solutions. Ready to Elevate Your Web Presence: With a proven track record and a passion for innovation, I am eager to contribute to your next project.
    Featured Skill JavaScript
    WooCommerce
    Ghost CMS
    PHP
    PSD to HTML
    CSS
    WordPress
    AJAX
    React
    Website
    Front-End Development
    Landing Page
    HTML
    jQuery
    Bootstrap
  • $15 hourly
    • 5.0/5
    • (9 jobs)
    Hello! I'm a dedicated Full Stack Developer with a profound interest in building solutions that cater to real-world challenges. One of my standout attributes is my rapid adaptability to new technologies. The exhilaration I derive from acquiring new skills is immense, and it’s even more fulfilling when I apply these fresh skills to practical situations. My background in mathematics and statistics has armed me with a unique perspective in problem-solving. This foundation has honed my analytical prowess, enabling me to approach coding challenges with a methodical and logical lens. Whether it's optimizing a database, setting up a RESTful API, or just crafting a seamless user experience, I'm here to provide value with my technical expertise. I genuinely believe that every problem has a solution, and I'd be thrilled to assist you in navigating and resolving your technical challenges. Expertise in: Node.js (Javascript/ Typescript) Express.js MongoDB / Mongoose MySQL, SQL Server / Sequelize Test Implementation with Jest React RESTful API Development JWT Authentication POSTMAN Docker Git BitBucket GitHub Slack Jira Should you require a passionate and skilled developer, I'm just a message away. Looking forward to collaborating and building incredible solutions together!
    Featured Skill JavaScript
    MongoDB
    GitHub
    Git
    Web Development
    API Integration
    TypeScript
    Jest
    ExpressJS
    Web Application
    API
    API Development
    Node.js
  • $20 hourly
    • 5.0/5
    • (3 jobs)
    I'm a full-stack developer and embedded systems engineer. My skills and experiences span with frontend, backend, mobile app development technologies, project management tools , and IoT integrations using diverse microcontrollers, actuators, sensors and different types of protocols. I deliver innovative and cost-effective solutions tailored to each project. I hold a BSc Engineering Honours Degree in Computer Science and Engineering from the University of Moratuwa, Sri-Lanka, specializing in Integrated Computer Engineering. My professional experience includes a role as a Trainee Software Engineer at Circles.Life Technologies and a 5 star rating on Fiverr and Upwork platforms, underscoring my expertise across various technical domains.
    Featured Skill JavaScript
    UI/UX Prototyping
    Figma
    MQTT
    Firebase
    MySQL
    Spring Boot
    HTML
    Java
    React
    React Native
    C++
    ESP32
    Python
    Arduino
  • $15 hourly
    • 5.0/5
    • (5 jobs)
    I am a highly skilled Automation Engineer, Full-Stack Developer, DevOps Engineer, and Manual QA Engineer with over 9 years of industry experience. I specialize in REST API development, API integrations, finance application development (including IBKR API), and performance improvements. My expertise spans Java, Python, React Native, and React, allowing me to build scalable and efficient web and mobile applications. Additionally, I have experience in mobile development and can adapt to project needs. With a strong background in test automation, cloud infrastructure, CI/CD pipelines, and database optimization, I ensure high-quality and performant software solutions. Whether it's backend automation, DevOps, software testing, or full-stack development, I deliver robust and efficient results tailored to business needs.
    Featured Skill JavaScript
    Python
    Zapier
    WooCommerce
    Selenium WebDriver
    Automation Framework
    Firebase
    Microservice
    AWS Application
    MongoDB
    MySQL
    Spring Boot
    REST API
    Java
    Agile Software Development
  • $20 hourly
    • 5.0/5
    • (4 jobs)
    I am a committed, energetic, result-oriented, and UX-focused frontend engineer with an extensive experience in UX designing. I have gained a solid 6+ years' hands-on experience in high-profile, frontend solutions and working on projects for British, UAE, and EU clients. # Expert in developing responsive user interfaces using HTML5, CSS3 and preprocessors such as SASS and LESS with BEM methodology. # Excellent knowledge and experience in CSS libraries such as Tailwind CSS, Bootstrap and Clarity. # Angular application development TypeScript, Angular 10+, Angular Material 10+ and external libraries such as RxJS, NgRx, Lodash etc. # React and React-native application development using TypeScript, React MUI, Redux, styled components, Lodash etc. # Full-stack development with JavaScript and PHP (Angular, Symfony, PostgreSQL, MySQL, Doctrine). # Experience working with MEAN stack (MongoDB, Express JS, Angular 10+, Node JS). # Proficiency in writing unit and e2e tests using frameworks such as Jasmine, Jest and cypress. # Experience in component-driven development with bit.dev and storyboard. # Knowledge in Micro-Frontend Architecture and module federation. # Knowledge in Apache Cloud Stack, Open Stack and AWS(Cerified Cloud Practitioner). # Hands on experience cloud services, AWS (Beanstalk, S3 bucket, RDS) and Google (compute). # Industry experience in UX/UI designing.
    Featured Skill JavaScript
    MongoDB
    NestJS
    Node.js
    TypeScript
    Cypress
    Jasmine
    Bootstrap
    Redux
    Angular Material
    RxJS
    Responsive Design
    React Native
    React
    Angular
  • $25 hourly
    • 5.0/5
    • (26 jobs)
    My strength lies in building real-world applications that serve real needs. If you’re looking for someone to create a fast, secure, elegant, and production-ready Chrome extension, then I’m your go-to expert. I’ve been a software developer for almost 4 years, working on a wide variety of Chrome extensions, web applications, backends, and more. My expertise spans projects such as: - Interacting with websites - Scraping data from websites - Reverse engineering internal APIs - Enhancing website functionality And much more. Beyond technical skills, I pride myself on clear communication, attention to detail, and a commitment to delivering polished, high-quality results I’ve worked with startups, solo entrepreneurs, and larger companies, so I get how different needs can vary. Whether you need a tool to save time, simplify workflows, or do something completely new, I’m here to help make it happen. Let’s create something great together!
    Featured Skill JavaScript
    Data Extraction
    Web Scraping
    Browser Automation
    Google Chrome Extension
    Front-End Development
    Node.js
    Google Cloud Platform
    AWS Application
    SQL
    TypeScript
    Next.js
    React
    Full-Stack Development
    Web Application
  • $15 hourly
    • 4.9/5
    • (76 jobs)
    Skilled in multiple technologies, including: Java (including JavaFX) | Angular SpringBoot | JavaScript PHP (Laravel, Code Igniter) | Python Node | AppleScript | Android | Bash Seeking challenging and fascinating work opportunities. Extensive expertise in: 1. Automation & Scraping: Leveraging Selenium and Playwright. 2. Full-stack Development: Creating desktop (macOS and Windows) and web applications. 3. Linux Server Administration: Proficient in setup, migrations, and ongoing management. 4. Cloud Services: Proficiency across AWS, Digital Ocean, Google, Akamai, Heroku, and OpenShift. 5. API Integration: Experience with Google, Yahoo, Amazon, eBay, Twilio, Vonage, and more. 6. Innovative SEO Tools: Developing solutions to enhance search engine optimization. My work history speaks volumes about my capabilities. Take a moment to review it for a comprehensive understanding of my skills and experience.
    Featured Skill JavaScript
    NGINX
    Angular
    Laravel
    Web Development
    PHP
    WordPress
    Linux System Administration
    Heroku
    Scripting
    Web Crawling
    HTML
    CodeIgniter
    Apache HTTP Server
    Data Scraping
    DigitalOcean
    Automation
    CentOS
    Java
    MySQL
  • $35 hourly
    • 4.9/5
    • (125 jobs)
    Senior Software Engineer | 10+ Years of Experience in Web & Mobile Development As a seasoned software engineer with over a decade of experience in web and mobile development, I bring a deep understanding of the latest technologies and best practices to every project. My continuous learning and hands-on experience with complex projects ensure that I know exactly how to choose the right technologies and strategies for your specific needs. I am committed to delivering high-quality work, leveraging my extensive experience to ensure the success of your project. Your satisfaction and the success of your project are my top priorities
    Featured Skill JavaScript
    jQuery
    Google Web Designer
    Webflow
    Lottie
    HTML
    GSAP
    CSS
    Advertisement
    Flutter
    Android App Development
    iOS Development
    HTML5
    Java
    MySQL
    CSS 3
  • $35 hourly
    • 5.0/5
    • (24 jobs)
    Kasun is a highly experienced developer based in Colombo, Sri Lanka, specializing in the Ghost CMS. Certified by the Ghost Foundation as a Ghost Expert, Kasun has a proven track record of exceeding client expectations. His meticulous approach and passion for his work ensure your project is completed to the highest standard. Ready to discuss your project? Schedule a free personalized consultation with Kasun today and discover how his expertise can benefit you & your brand. --- As a Certified Ghost Developer, Kasun is fully competent in: ✅ Custom Ghost CMS Theme Development (Based on Figma, Canva or any custom design) ✅ Customize existing Ghost CMS blog/website themes ✅ Ghost CMS Data Migration (from WordPress, Ghost Pro, Substack or Custom CMS) ✅ Ghost Pro / Ghost.io Setup & domain configuration ✅ Install & set up self-hosted Ghost CMS blog (AWS, GCP, Digital Ocean or any cloud platform) ✅ Troubleshoot, fix or consult on any Ghost CMS related issues/bugs ✅ Update Ghost CMS blog to the latest version Why Kasun? ✅ You are about to hire a Certified Ghost Expert by Ghost.org (Ghost Foundation) ✅ Quick delivery ✅ 100% Money back guarantee ✅ Support for both Ghost Pro/Ghost.io & Ghost Self-hosting ✅ Extended support that you can rely on (even after the order is completed)
    Featured Skill JavaScript
    Web Design
    HTML5
    CSS 3
    Ghost CMS
  • $30 hourly
    • 4.6/5
    • (227 jobs)
    Hi there, my name is Prabath and I'm a critical thinker that knows how to get things done - efficiently and effectively. I have the education, experience, and natural ability to develop amazing systems and prove the results. I am confident that if I can't do it, no one can...and there is little in this world that can't be done. I'm proud to report that I’m a TOP-RATED Freelancer on Upwork. I'm primarily a Vtiger CRM Engineer. I know almost all aspects of the Vtiger CRM tool inside and out and I educate myself on new features as they become available. I also have over 15 years of experience in vtiger. I understand automation, integrations, segmentation, data mapping, and customer relationship management at a fundamental and strategic level. I have worked with a few Vtiger Partner Agencies. The majority of my experience is with US markets, but I also understand Canadian, UK, Australian, and some EU markets well. I also worked in Australia on a large-scale project. I have built more than 200 vtiger instances by myself and have likely worked with over 300 clients over the past 15 years - each from a different business sector with unique use cases and needs. I've been working as a team lead and consultant. I understand how content interacts with vtiger CRM, database, automation, and workflows to bind the content, the user journey, and the goal/outcome into one value system. I am invested in building a strong rapport with clients and delivering projects that improve their business. I am interested in opportunities for ongoing work relationships. I respond to all messages between 8:00 a.m. - 10:00 p.m. (IST) and always within 24 hours! Talk soon.
    Featured Skill JavaScript
    AJAX
    WordPress
    Vtiger Development
    MySQL
    Web Service
    Database
    Vtiger
    PHP
    jQuery
  • $25 hourly
    • 5.0/5
    • (8 jobs)
    I can efficiently apply advanced Angular/React and .NET/.NET Core capabilities to help you succeed with your project. This can either be through actual development work or with advising or coaching. I insist on being responsive to my clients and also providing clear communication and detailed documentation as it pertains to a project. ⭐ Attention to detail: I take pride in doing everything I do as thoroughly as possible, from start to finish. ⭐ I am comfortable with any programming challenge: Always use better programming design patterns, clean, readable and reusable code, high-performance code. ⭐ I Can work in Agile Environment: Simple and elegant enough to refactor easily and flexible ✔ I do have 15+ Years experience in Software development 15+ years of experience in .NET/.NET Core (C#) 10+ Years of experience in Azure Development and Administration 6 Years of experience in Angular 5 Years of experience in Microservice development 5 Years of experience in React ✔ I have earned Top Rated Freelancer on Upwork with 100% Job Success Score ✔ My Dev Environment Core i7 11th Gen CPU Laptop 32 GB RAM Dual Monitors Windows 11 Enterprise Version 100Mbps High Speed Fiber Internet Connection ✔ My Working Days Monday to Saturday ✔ My Working Hours 9.00 AM to 6.00 PM IST ✔ Familiar Frameworks and APIs Web ( Service Side ): ASP.NET Core Web API ASP.NET Core Razor Page ASP.NET Core SignalR Blazor ( Webassembly & Server) EF Core RabbitMQ Dapper Docker Web ( Client Side ): Angular : Angular Material, PrimeNG, KendoUI,NgRx (State Management) React Bootstrap D3.js jQuery Mobile: IONIC with Apache Cordova React Native Cloud (Microsoft Azure): Azure VMs, Azure Cloud Services, Azure Batch. Azure Web Apps, Azure Blob Storage, Azure Queue Storage, Azue SQL Database, Azure Cosmos DB, Azure Table Storage, Azure Redis Cache, Azure Service Bus Topic, Azure Service Bus Queue, Azure Active Directory Service Cloud(AWS) EC2, Batch, S3, API Gateways, DynamicDB, Database Server: MS SQL Server , Azure SQL, Azure Cosmos DB, MySQL, MongoDB 3rd Party APIs : Stripe, Paypal, Twilio SMS, SendGrid Email ,Google reCaptcha V3,Google Maps Development IDE: Visual Studio 2019/2022 Visual Studio Code CI/CD Azure Pipelines AWS Code Pipelines Version Control: Github, Bit Bucket, GitLab
    Featured Skill JavaScript
    Azure App Service
    MVC Framework
    ASP.NET Core
    MySQL
    Microsoft SQL Server Programming
    Twitter/X Bootstrap
    Node.js
    Angular
    ASP.NET Web API
    React
    C#
    Microsoft Azure
    TypeScript
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Top cities for JavaScript Developers in Sri Lanka
Show more