Upwork home
Sign up
Secondary

Hire the best React.js Developers in Portugal

Check out React.js Developers in Portugal with the skills you need for your next job.
Get started
  • $60 hourly
    • 5.0/5
    • (28 jobs)
    🏆 Top Rated React developer 🏆 6+ years of professional work experience 🏆 25+ successful projects 🏆 3000+ hours on Upwork 🏆 100% client satisfaction rating. Specialized in developing Web, Mobile and Hybrid applications. Experienced in working in both corporate and startup environments. Technical Summary; • Languages: JavaScript, TypeScript, HTML, CSS • Web Frameworks: NextJS, React (CRA), Gatsby • Mobile Technologies: ReactNative, Expo, • Design Frameworks: TailwindCSS, Styled-Components, SASS, Material-UI • Headless CMS: Sanity.io, Strapi, Netlify, Prismic • Other Tools: Redux, ContextAPI, Firebase, Supabase • Database: Firestore, Supabase, MongoDB, PostgreSQL • SDLC: Waterfall, Iterative, Agile (Scrum) • Version Control: Git, Bitbucket, GitLab Let's build a fast, scalable app, and grow your business together!
    Featured Skill React.js
    API Integration
    Redux
    Web Application
    Tailwind CSS
    Firebase
    Git
    Web3
    React Native
    Gatsby.js
    Next.js
    React
    Ecommerce Website
    HTML5
    TypeScript
    JavaScript
  • $60 hourly
    • 5.0/5
    • (21 jobs)
    Creator of ExtractThinker, a Python project for Document Intelligence for LLMs. github: enoch3712/ExtractThinker medium: @enoch3712 Former founder and CTO of BRaaSTech (acquired at pre-seed). My background is in full-stack development with .NET and React for the front end, covering everything from cloud to DevOps.
    Featured Skill React.js
    Next.js
    OpenAI Codex
    ChatGPT
    React
    GPT-3
    .NET Core
    GPT-4
    Cypress
    Azure OpenAI Service
    SQL
    Microsoft Azure
    C#
  • $40 hourly
    • 5.0/5
    • (11 jobs)
    I'm a developer with 10+ years of experience, I've worked in a wide range of projects from advertising websites to internal banking applications.
    Featured Skill React.js
    Next.js
    HTML
    JavaScript
    jQuery
    Responsive Design
    TypeScript
    Sass
    React
    Node.js
    Python
    PHP
    GraphQL
    MongoDB
  • $60 hourly
    • 5.0/5
    • (15 jobs)
    I'm a software engineer with 10+ years of experience. Worked at Amazon (AWS) for 5+ years. I have vast knowledge of AWS, DevOps. Fluent in multiple programming languages. I'm easy to work with and flexible. Expertise: * AWS: Proficient with most AWS services. AWS Certified Developer – Associate * Languages: Python, Java, Javascript * Infrastructure as Code: AWS CDK, Cloudformation * Deployment: AWS CodePipeline/CodeBuild, Github Actions * Containers: Docker, Docker Compose * Frameworks: ReactJs, Spring, Serverless * Reverse Proxy: Nginx * VCS: Git, SVN
    Featured Skill React.js
    Amazon ECS
    Java
    AWS CloudFormation
    React
    Amazon EC2
    Docker
    AWS Lambda
    DevOps
    DevOps Engineering
    Amazon Web Services
    Python
    Linux
  • $55 hourly
    • 5.0/5
    • (12 jobs)
    ⏱️ Save valuable time and energy—focus on your business growth while I handle the tech! With a Master of Computer Science (MSCS) in Computer Engineering (2018-2021) and over 12 years of experience, I have specialized in crafting robust web solutions that drive business success. Leveraging advanced DevOps practices, including Docker, AWS, and Git, along with a solid foundation in the LAMP, MERN, MEAN stack, I have been building secure, scalable, and high-performance web applications since 2012. My expertise extends to backend development with PHP frameworks such as Laravel, Symfony, and CodeIgniter, combined with frontend experience in React and Vue. This allows me to deliver tailored, efficient, and modern solutions that ensure seamless integration, optimal performance, and a responsive user experience across various platforms. 👉 Core Competencies: 💎 Backend: PHP, Laravel, Symfony, CodeIgniter, CakePHP, Node.js, Express.js, Nest.js, Python 💎 Frontend: React, Vue, HTML, CSS, JavaScript (ES6+), Jquery, Bootstrap 💎 E-Commerce and CMS: OpenCart, PrestaShop, WordPress, Drupal, Joomla, Magento, Bagisto, Shopware, X-Cart, CS-Cart, Wix, Sylius, Zen Cart 💎 Database: MySQL, Database, MariaDB, PostgreSQL, MongoDB 💎 DevOps: Docker, AWS, EC2, S3, ELB, Git (CI/CD) 👉 Achievements: 💲Increased online sales by 30% through performance optimizations and UX enhancements. 💲Deployed flexible infrastructure on AWS, reducing server costs by 20% while improving reliability. 🔥 Ready to create something awesome? Message me and let's get going!
    Featured Skill React.js
    C++
    Python
    jQuery
    React
    Next.js
    Vue.js
    Node.js
    MySQL
    DevOps
    PrestaShop
    WordPress
    OpenCart
    Symfony
    Laravel
    PHP
  • $40 hourly
    • 5.0/5
    • (6 jobs)
    ⭐️⭐️⭐️⭐️⭐️ | Top Rated | Ex-EY & Accenture Digital Consultant | 100% Job Success Score Hi, I’m Alex! I blend clean, modern design to deliver flawless web apps, websites, and landing pages. With a background at EY and Accenture, I bring a consultative approach to every project, ensuring smooth communication and on-time delivery. What I Can Do for You: ✅ React Development: Build fast, responsive, and maintainable frontends using React and related frameworks. ✅ Landing Page Creation: Craft eye-catching, optimized landing pages that convert visitors into customers. ✅ UI/UX Best Practices: Design user-friendly interfaces that keep your audience engaged. ✅ Performance Optimization: Ensure your site runs quickly and efficiently for better user experience and SEO. ✅ Mobile Responsiveness: Make sure your pages shine on every device and screen size. ✅ AI Integration: Seamlessly integrate AI features into your projects to boost interactivity, streamline processes, and enhance overall user experiences. I’ve worked on and helped a startup raise over $200k, so I understand the firsthand challenges and opportunities business owners and entrepreneurs face. I believe in transparency and clear communication in all my work, ensuring we achieve your goals together. Looking forward to working together!
    Featured Skill React.js
    AI Model Integration
    AI App Development
    Web Application Development
    Figma
    Supabase
    Python
    User Experience
    User Interface Design
    JavaScript
    CSS
    HTML
    Landing Page
    Material UI
    React
  • $42 hourly
    • 5.0/5
    • (7 jobs)
    I am a highly skilled and versatile Senior Full Stack Developer with 9 years of experience delivering robust, scalable web applications that drive business results. My backend expertise lies in Python (Django, FastAPI), and I specialize in crafting custom WordPress & WooCommerce themes and plugins tailored to client needs. On the frontend, I bring extensive experience with JavaScript frameworks including React, Angular, and Vue.js, as well as full-stack development with the MERN stack (MongoDB, Express.js, React, Node.js) to build fast, responsive applications that enhance user experiences. In addition to full stack development, I’ve implemented Power BI dashboards that transform complex data into accessible, actionable insights for stakeholders. I also have a strong track record of leading cloud migrations to AWS and Azure, improving performance while reducing operational costs. I’m highly proficient with Zapier and automation tools, using them to streamline workflows, connect disparate systems, and build low-code/no-code solutions that increase efficiency and save time. Whether automating ticket routing in Zendesk, syncing data between CRMs and marketing platforms, or orchestrating multi-step approval processes, I bring a strategic mindset to automation that supports business growth. I’m passionate about building solutions that not only work—but empower users and elevate outcomes.
    Featured Skill React.js
    Zapier
    Node.js
    MongoDB
    Amazon Web Services
    MySQL
    Angular
    Laravel
    React
    Electron
    Microsoft Power BI
    FastAPI
    LangChain
    Django
    Python
    WordPress
  • $40 hourly
    • 5.0/5
    • (24 jobs)
    Hey there 👋 Passionate techie here, diving headfirst into development for 10 years, fuelled by coffee and a love for code. I make it my mission to craft intuitive user interfaces, performance-driven solutions, and elegant code. My playground is .NET Core, Node.js, React, React Native, LLMs, Agentic AI, and more. I believe in transparency, so I expect detailed task lists and updates. Deadlines are sacred and clean, and I excel at maintainable code. Are you looking for a partner to create digital magic? Let's connect and transform your vision into reality!
    Featured Skill React.js
    AI Agent Development
    Machine Learning
    Mobile App Development
    Artificial Intelligence
    Node.js
    Mobile App
    React Native
    iOS
    Android
    API Integration
    React
    HTML
    API
    Web Development
    JavaScript
  • $50 hourly
    • 5.0/5
    • (16 jobs)
    🔧 Specialties: Core Web Vitals | WordPress Development | WooCommerce | Custom Themes | Plugins | SEO Optimization | Advanced Custom Fields Hi, I'm Pedro, a Full Stack Developer with 10+ years of experience in building, optimizing, and customizing websites that meet the unique needs of each business. I specialize in creating SEO-friendly, high-performing websites using tools like Advanced Custom Fields, WooCommerce, and custom plugins to deliver pixel-perfect designs and functional user experiences. 🎯 What I Can Do for You 🎯 Custom WordPress Themes & Plugins Development Bring your design ideas to life with custom-built themes that are fast, scalable, and easy to manage. Need a unique feature? I can develop custom plugins to extend your website's functionality. WooCommerce Development Looking to sell online? From store setup to customizations, I can help you with everything WooCommerce-related: payment gateways, analytics, product management, and more. SEO & Performance Optimization Boost your website’s visibility on search engines and improve loading speed. I follow best SEO practices (alt attributes, meta descriptions, structured data) to ensure your site performs well. Advanced Custom Fields Integration Get more control over your content with ACF. Whether it's dynamic pages or reusable content blocks, I can structure your site in a way that makes it easy to manage and update. 🚀 Why Work With Me? 🚀 Proven Track Record: 100+ successful projects and counting. Detail-Oriented: Clean, well-documented code with future scalability in mind. Client-Centric: I believe in clear communication and keeping clients in the loop from start to finish. Your vision is my priority. 📈 Let's Build Something Great Together 📈 I'm passionate about creating websites that help businesses grow. Let's discuss how I can bring value to your project. 📧 Contact me today, and let's get started!
    Featured Skill React.js
    Web Design
    NGINX
    Node.js
    Page Speed Optimization
    React
    Web Development
    WordPress
    CSS
    SQL
    JavaScript
    PHP
    Shopify
    Website Optimization
    MySQL
    Elementor
  • $60 hourly
    • 5.0/5
    • (28 jobs)
    🚀 Turning your vision into scalable, high-performance digital solutions! 🏆 6 years experience | 2,500+ Upwork hrs | 25+ successful large-scale projects | Top Rated | 100% Client Satisfaction (JSS) | Proven track record & stellar client feedback! 🌟 Looking for a Full-Stack Team Leader who can turn your vision into scalable, AI-powered applications? I specialize in crafting robust backends, dynamic frontends, and intelligent integrations using modern technologies such as React, Node.js, and advanced AI frameworks. With 6 years of experience—and over 2,500 hours logged on Upwork across 25+ projects—I ensure that your web or mobile application is not only highly functional but also future-ready with cutting-edge features. What I Bring: Seamless Full-Stack Expertise: From creating responsive frontends with React and Next.js to building scalable backends with Node.js, Flask, and Laravel. AI and Chatbot Development: Integration of AI-driven features, including ChatGPT-powered chatbots for personalized user experiences and automation. Database Proficiency: Skilled in MySQL, Supabase, and MongoDB for scalable, secure, and efficient data solutions. Performance Optimization: Strong focus on speed, SEO, and responsiveness for exceptional user experiences. Blockchain Knowledge: Experience building dApps with Ethereum for cutting-edge decentralized solutions. Recent Achievements: Designed and deployed a social networking platform with AI-powered post recommendations, boosting user engagement by 40%. Built and integrated a ChatGPT-based chatbot for a customer support system, reducing response time by 60% and improving user satisfaction. Developed a full-stack e-commerce application using the MERN stack with intelligent product recommendations and real-time order tracking. Created a custom React-based dashboard for a global client, praised for its intuitive design and high performance. Skills & Expertise: 🔹Front-end: Proficient in ReactJS, Gatsby, Next.js, and React Native for crafting UI. 🔹Back-end: Solid understanding of NodeJS and ExpressJS. Flask, Laravel. 🔹Languages: Comfortable with JavaScript, Python, PHP, Typescript, HTML, and CSS. 🔹Design: Skilled in design libraries like Material UI and Antd for appealing interfaces. 🔹React Specialization: Expertise in Redux and Hooks for enhanced app performance. 🔹Database Handling: Experienced in managing MongoDB and Firestore. 🔹Content Management: Proficient in tools like Prismic, Strapi, etc. 🔹Technical Proficiency: Familiar with GraphQL, Webpack. 🔹Version Control: Proficient in utilizing Github, BitBucket, Gitlab. 🔹Cloud Capabilities: Able to leverage AWS to deploy scalable applications to the cloud. 🔹Interactive Preview: Creating interactive components using Storybook. 🔹Dev Tools: I always have Github Copilot backing me up to speed up development. Client Testimonials: "One of the best developers I worked with so far. Good work quality, communication and output. You would be a fool to skip on such a great candidate!" - Eugene, Shosho. "Maaz is an excellent communicator and his mastery of the English language is unparalleled by any other freelancer I have ever hired. He understands what the end result looks like and knows the pitfalls to avoid along the way. He is willing to go the extra mile and this is the reason I have hired him more than once and will rehire when the time comes." Ryan, Ninja Devs If you're looking for a developer who combines technical excellence, AI innovation, and user-centric design, let’s collaborate to create something extraordinary! 🚀
    Featured Skill React.js
    Node.js
    CSS
    HTML5
    TypeScript
    Tailwind CSS
    Web Application Development
    Responsive Design
    API Development
    Next.js
    Mobile App Development
    JavaScript
    React Native
    React
    Front-End Development
    Full-Stack Development
  • $32 hourly
    • 5.0/5
    • (26 jobs)
    🏆 Top Rated Freelancer with giving quality and delivering exceptional results to my clients. With a passion of creating innovative solutions, I'm committed to providing my clients with a best possible experience. From understanding their unique requirements to delivering timely and effective solutions, I always strive to go above and beyond and believe that great communication is a key to a successful project, which is why I make sure to keep my client informed every step of the way. If you are looking for a expert developer who can deliver exceptional results, look no further. I would love to hear more about your project and how I can help bring your vision to life. Let's work together to create something truly amazing!
    Featured Skill React.js
    Gatsby.js
    Next.js
    UI Animation
    UX & UI
    Vue.js
    Bitbucket
    GitHub
    Laravel
    Mobile App Development
    React Native
    React
    Dart
    Flutter
    Firebase Cloud Firestore
  • $39 hourly
    • 4.1/5
    • (9 jobs)
    🚀 𝗛𝗲𝗮𝗱𝗹𝗲𝘀𝘀 𝗖𝗠𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝗦𝘁𝗿𝗮𝗽𝗶, 𝐒𝐚𝐧𝐢𝐭𝐲, 𝐚𝐧𝐝 𝐆𝐡𝐨𝐬𝐭 𝗖𝗠𝗦 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 🏆 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 📈 𝗣𝗿𝗼𝘃𝗲𝗻 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁, 𝗥𝗲𝗮𝗰𝘁, 𝗡𝗲𝘅𝘁.𝗷𝘀, 𝐒𝐯𝐞𝐥𝐭𝐞𝐤𝐢𝐭, 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗮𝗻𝗱 𝗧𝗮𝗶𝗹𝘄𝗶𝗻𝗱 𝗖𝗦𝗦 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 🧙‍♂️ 𝗢𝘃𝗲𝗿 𝟓𝟎+ 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗟𝗮𝗻𝗱𝗶𝗻𝗴 𝗣𝗮𝗴𝗲 𝗮𝗻𝗱 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗖𝗮𝘀𝗲𝘀 If you're looking for a reliable Web developer who understands your business requirements and delivers exactly according to your needs, then you're in the right place. I build scalable web applications using React, Next.js, Sveltekit, TypeScript, and Headless CMSes Strapi, Sanity, Ghost, etc 𝗕𝗘𝗡𝗘𝗙𝗜𝗧𝗦 𝗢𝗙 𝗪𝗢𝗥𝗞𝗜𝗡𝗚 𝗪𝗜𝗧𝗛 𝗠𝗘 ✓ 𝗧𝗿𝗮𝗻𝘀𝗽𝗮𝗿𝗲𝗻𝘁 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Weekly updates so you’re always in the loop. ✓ 𝗙𝗹𝗮𝘄𝗹𝗲𝘀𝘀 𝘁𝗶𝗺𝗶𝗻𝗴 𝗮𝗻𝗱 𝗯𝘂𝗱𝗴𝗲𝘁𝗶𝗻𝗴: Your project stays on track and on time thanks to a strict roadmap that prevents unexpected costs. ✓ 𝗗𝗲𝗱𝗶𝗰𝗮𝘁𝗲𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿: Unlike big agencies that hand off your project, I will see you through from start to finish so that there’s a single point of contact and fast turnaround times. 𝗟𝗘𝗧'𝗦 𝗪𝗢𝗥𝗞 𝗧𝗢𝗚𝗘𝗧𝗛𝗘𝗥 If you’re ready to turn your vision into a reliable app that your users will love then we should talk. Feel free to send me a message. We can arrange a short call with no obligation to go over your project and see whether we're a good fit to work together. Get in touch now! 𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒: JavaScript, React, Node.js, Web Development, Strapi, Sanity, Ghost, Next.js, Sveltekit, CSS, TypeScript, API, HTML, WordPress, PHP, Tailwind CSS, API Integration, Front-End Development, Web Application, Web Design, Website, PostgreSQL, MongoDB, Git, Landing Page, MySQL, Responsive Design, GraphQL, Python, CMS Development, HTML5, React.
    Featured Skill React.js
    Ghost CMS
    Contentful
    Strapi
    Custom Ecommerce Platform Development
    Ecommerce Website Development
    API Development
    SaaS Development
    Full-Stack Development
    Node.js
    Front-End Development
    Web Design
    React
    Next.js
    TypeScript
    GraphQL
  • $35 hourly
    • 4.4/5
    • (14 jobs)
    Shopify Developer here to help small and medium businesses thrive in a market dominated by large corporations. What I offer: 🏪 Complete Store Setups from user-friendly interfaces to tax settings and domain configuration. 🎨 Theme Customizations - your store's design to match your brand's unique style. ⚙️ Third-Party App Integrations - essential apps to your store to boost its functionality. 💻 Shopify Apps Development - custom Shopify apps to meet your specific business needs. Technologies I've been working with: HTML, CSS, JavaScript/TypeScript, Liquid, Remix, React, NodeJS.
    Featured Skill React.js
    React
    JavaScript
    HTML
    CSS 3
    Web Development
    Shopify Development
    Liquid
    Shopify Theme
    Shopify Apps
    Shopify Plus
    Shopify
  • $20 hourly
    • 5.0/5
    • (2 jobs)
    𝟕+ 𝐲𝐞𝐚𝐫𝐬 𝐢𝐧 𝐅𝐮𝐥𝐥𝐬𝐭𝐚𝐜𝐤 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐀𝐈 | 𝐌𝐋 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞, I build software that doesn't just meet expectations but 𝐬𝐞𝐭𝐬 𝐧𝐞𝐰 𝐬𝐭𝐚𝐧𝐝𝐚𝐫𝐝𝐬. From scalable web apps to cutting-edge AI tools, I deliver solutions that drive growth, enhance user experience, and solve real business challenges. 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨: - 𝑬-𝒄𝒐𝒎𝒎𝒆𝒓𝒄𝒆 & 𝑺𝒂𝒂𝑺: Platforms with custom catalogs, secure payments, and user management. - 𝑨𝑰-𝑫𝒓𝒊𝒗𝒆𝒏 𝑺𝒐𝒍𝒖𝒕𝒊𝒐𝒏𝒔: Predictive analytics, NLP, and chatbots to automate and optimize operations. - 𝑨𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏 & 𝑫𝒂𝒕𝒂 𝑺𝒄𝒓𝒂𝒑𝒊𝒏𝒈: Streamlined workflows and advanced data scraping techniques. - 𝑪𝒖𝒔𝒕𝒐𝒎 𝑺𝒐𝒇𝒕𝒘𝒂𝒓𝒆: Tailored solutions to meet unique business needs. - 𝑾𝒆𝒃 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 & 𝑴𝑽𝑷𝒔: Scalable web apps and fast-tracked MVPs with user-first design. 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬 ➤ 𝑭𝒓𝒐𝒏𝒕𝒆𝒏𝒅: React.js, Angular, JavaScript (ES6+), HTML5, CSS3 ➤ 𝑩𝒂𝒄𝒌𝒆𝒏𝒅: Node.js, Django, Nest.js, Express.js ➤ 𝑨𝑰/𝑴𝑳: TensorFlow, PyTorch, Hugging Face, OpenCV ➤ 𝑨𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏: Selenium, Scrapy, Puppeteer ➤ 𝑪𝒍𝒐𝒖𝒅 & 𝑫𝒆𝒗𝑶𝒑𝒔: AWS (EC2, Lambda, S3), Docker, Serverless Architecture ➤ 𝑫𝒂𝒕𝒂 & 𝑫𝒆𝒗 𝑻𝒐𝒐𝒍𝒔: MongoDB, PostgreSQL, Git, Postman, CI/CD 𝐖𝐡𝐲 𝐌𝐞? ➩ 𝑷𝒓𝒐𝒗𝒆𝒏 𝑬𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆: With years of hands-on experience, I know what works and what doesn’t. ➩ 𝑩𝒖𝒔𝒊𝒏𝒆𝒔𝒔-𝑭𝒐𝒄𝒖𝒔𝒆𝒅: Design solutions that aligned with your goals for growth and efficiency. ➩ 𝑪𝒖𝒕𝒕𝒊𝒏𝒈-𝑬𝒅𝒈𝒆 𝑨𝑰: I bring AI and machine learning into your projects with tools that add real value. ➩ 𝑬𝒇𝒇𝒊𝒄𝒊𝒆𝒏𝒕 𝑬𝒙𝒆𝒄𝒖𝒕𝒊𝒐𝒏: I deliver solutions on time, without compromising on quality. 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐆𝐫𝐞𝐚𝐭 If you're looking for a skilled developer who understands both the technical and business sides, I’m your go-to. Ready to dive in? Let’s connect.
    Featured Skill React.js
    JavaScript
    Scrapy
    Hugging Face
    Automation
    AWS Lambda
    NestJS
    Next.js
    React
    Flask
    Django
    PyTorch
    Node.js
    Machine Learning
    Artificial Intelligence
    Python
  • $30 hourly
    • 5.0/5
    • (2 jobs)
    Head of Digital Spiders, a creative agency that spins high-performance websites using the Astro/Gatsby + Sanity. Founded in 2017 in Lisbon, Portugal, we focus on marketing websites that convert and are tailored to our clients' brand. We use Astro (and previously Gatsby) to make our websites have the best performance, security and robustness, and apply all the SEO best practices to lift your website above your competitors. Our Sanity backoffices are also extremely easy and safe to use, allowing you to keep your website up to date on your own without depending on the development team. Check our website to see what we're capable of.
    Featured Skill React.js
    GSAP
    Landing Page
    Website
    SEO-Based Website
    Figma
    Netlify
    Gatsby.js
    React
    Landing Page Design
    Web Design
    Web Development
  • $35 hourly
    • 4.5/5
    • (86 jobs)
    Hey!, I'm an Experienced Website and Mobile/Web Application Developer. I've been involved in Web Development Projects for more than 10 Years now, and working on various web/mobile technologies and very well versed in .NET and PHP Framework. Over the years I've worked with various people from around the world specially with Umbraco CMS v4.5 to Latest Version. Apart from building Customized Umbraco CMS for various startups, I'm also well versed with XSLT, UX Design & Development (FED), Razor, MVC, Javascript,psd to html,JQuery,CSS, React and React Native ,Angular ,HTML5, Mobile App's and willing to take any customized project as a challenge.
    Featured Skill React.js
    React Native
    Umbraco
    .NET Core
    Razor Template Engine
    ASP.NET
    AngularJS
    WordPress
    Web Development
    JavaScript
    C#
    ASP.NET MVC
    React
    Node.js
  • $25 hourly
    • 4.9/5
    • (8 jobs)
    🥇 Top Developer who will turn your project into a reality, solve problems, and enhance user engagement to boost sales. I have been creating JavaScript apps for the last 6 years: my main focus is Web/Web3 development using TypeScript, React.js, Next.js, Node.js, AI, web3.js and Solidity. MY EXPERTISE: ✅ Front-end: - Angular | React.js | Redux | Next.js | GraphQL | D3.js | echarts | Cypress | PWA | SSR - HTML | CSS | Tailwind | MUI | Chakra UI | Storybook | Javascript | Typescript ✅ Back-end: - Node.js | Express.js | MongoDB | Mongoose | PostgreSQL | MySQL | Google Cloud (App Engine) ✅ Blockchain & Web3 Development: - web3.js | ethers.js | web3-react | IPFS - Solidity | EVM | Hardhat | Truffle | Remix | Rust | Anchor - Ethereum | BSC | Polygon | Avalanche | Solana - NFT | DeFi | Dapp | Crypto Wallet - ERC721 / ERC20 / ERC1155 token standard contract. ✅ AI & Chatbot Development: - Langchain | OpenAI | Prompt Engine - Knowledge Retrieval | Vector DB | Pinecone 🚀 See my Github Profile: github.com/mainul-islam-faruqi I specialized in MERN stack, Building complex Web apps, Blockchain Application using Web3.js, Solidity, React.js, Next.js, Node.js. I have worked on NFT marketplace/Dapps/crypto wallet development, and chatbot development. I believe that my technical knowledge and problem-solving skills can be a valuable addition to your job. I am excited about the opportunity to contribute to the success of your project. I always try to do my best to improve my client's project, try to understand the business of my client, and realize their dreams. INVITEME! I will respond for sure within the next 6 hours :) Let's chat to find the hidden Gems! 💎
    Featured Skill React.js
    LangChain
    Solidity
    web3.js
    Blockchain Development
    Web Development
    TypeScript
    Redux
    Next.js
    CSS 3
    ExpressJS
    JavaScript
    Node.js
    React
    MongoDB
    Material UI
  • $40 hourly
    • 5.0/5
    • (47 jobs)
    Hi there 👋 I'm Artem, a technical lead, project manager, front-end developer and software engineer with over 10 years of experience. I have a proven track record of delivering successful projects. 🏆My expertise lies in mobile development, web development, back-end development, and browser extension development for enterprise companies and Fortune 500 companies. As a technical lead, I have worked on a mobile financial app that has grown to over 250k+ monthly active users and the Digital Credential Consortium (DCC) for MIT. 🏆 As a software developer, I have worked as a software architect for one of the largest HR systems in Europe, which FEDEX currently uses. I have also worked as a software architect and mobile developer for a cybersecurity startup that was accepted into Ycombinator after MVP and received 1.6 million USD in investments. My technical skills include React Native, React, Typescript, Next js, Nest js, Swift, Kotlin, Firestore, and Cryptography. If you're looking for an experienced technical lead or project manager with a strong software development background, I'm here to help. 🚀 Let's chat about how I can assist you in delivering your next project to success.
    Featured Skill React.js
    React Native
    Swift
    Objective-C
    React
    Node.js
    TypeScript
  • $45 hourly
    • 5.0/5
    • (17 jobs)
    ✅ 11+ Years in Development ✅ 100% Customer Satisfaction ✅ 20+ Upwork Projects with 100% Customer Success ✅ Top Rated Plus Profile ✅ 2000 Plus successful Upwork hours ✅ Enthusiastic Developer -----------------Overview----------------------- Greetings, I am Umair, a software engineer with over a decade of experience in the industry. I have worked on a wide range of projects, using a variety of trending technologies. ------------------ All Expertise -------------------- 🏅Elixir, Phoenix, Ruby on Rails, Python, Golang, Node.JS, Php, Laravel 🏅Blockchain/Ethereum/NFT/Cryptocurrency/Dapps/Wallets 🏅 AWS Certified & Expert in providing Amazon based solutions 🏅 DevOps, CI/CD, Cloud Architecture, Software Architecture 🏅 Linux Server Administration, Cloudlinux OS, Malware Removal, Cpanel, Plesk 🏅Wordpress, Onpage SEO, Offpage SEO, SEO Website Audit (edited) 🏅 WordPress/Shopify/Woo-Commerce/Magento/Drupal/Joomla 🏅 Javascript, ReactJS, AngularJS, VueJs, Bootstrap, MeteorJS, BackboneJS 🏅 Native iOS/Android App development (Swift/Objective-C, Java/Kotlin) 🏅 Hybrid Application development (React Native, Flutter) I started with PHP development in my career then stepped up to explore ROR. After mastering Ruby on Rails, I turned my sight on functional programming, which led me to Elixir. I love how efficient and fast Elixir is. I have built complex backend systems for managing a wide variety of data with Elixir. Have built demand handling producer, producer-consumer, consumer pipeline system to handle load scaling demand. 💪 Built and deployed systems with Kubernetes, Docker Swarm, Linux environments. 💪 Familiar with CI systems like Jenkins and TeamCity. 💪 Familiar with cloud-based systems like Azure and AWS. I also do have experience in converting Blockchain, Ethereum, Smart Contracts, ICO, NFT, Defi, IPO, Cryptocurrency, Dapps, Wallets, Golang, Python, Django, Flask, Scrappy, RoR, Ruby on Rails, Sinatra, Camping, PHP, Laravel, Java, Spring code to Elixir, and NodeJs. I have a lot of experience in developing e-commerce sites and webshops, online learning management sites, Memberium sites, real-estate sites, and much more. Area of expertise includes developing custom WordPress/Woo-Commerce themes, sites and plugins, Shopify stores, Shopify Apps, Magento stores, Opencart, and BigCommerce. I develop custom lightweight and fast themes and don't use purchased themes as a base. It allows reaching pixel-perfect PSD/Sketch/XD to HTML conversion and good speed of the theme. Advanced custom fields and post types enable you to get an easily manageable theme suited only to your needs. I specialize in creating Responsive Web Design and Mobile Applications. I can build adaptive and high-quality layouts on your design or adapt the website to your corporate identity. I can also create any custom development, complex logic, or other tasks related to the frontend. I am a diligent Mobile app developer with extensive experience of 8+ years. I design, build and maintain high-performance mobile apps. I cover all development needs, from UX design to final testing and deployment. My goal is not about writing some dummy code; it’s about providing a complex solution: well-written, reviewed, and tested projects. I stay plugged into emerging technologies/industry trends and apply them to operations and activities. The following domains demonstrate the range of experience I have, designing and building systems incorporating technologies at various points along the AI spectrum: -Python (Django, Flask, Web2py, cherrypy) - TDD and Unit Testing on the Python Platform - Deep learning - Machine Learning - Supervised learning - Unsupervised learning Bein AWS Expert Developer with relevant experience in running startup infrastructure on AWS and have worked on the below services, ✅ Building Serverless architecture ✅ Jenkins Continuous Integration, Continuous Deployment (CI/CD) ✅ Existing applications maintenance. Integrating 3rd-party APIs, making security. ✅ AWS administration: EC2, RDS, S3, Cloud Front, Elastic Beanstalk. ✅ Cloud Architecture, Building horizontally scalable and secure architecture ✅ Administration of relational (MySQL, PostgreSQL, MariaDB) and document-oriented (MongoDB) and DynamoDB databases. ✅ Familiar with microservices architecture, Docker containerization, Kubernetes orchestration. Let's connect and discuss the project scope to get started. Regards Umair
    Featured Skill React.js
    ASP.NET MVC
    .NET Framework
    Laravel
    Angular
    Full-Stack Development
    ASP.NET
    jQuery
    DevOps
    Ruby on Rails
    WordPress Development
    MySQL
    Swift
    React
    WordPress e-Commerce
    Python
  • $35 hourly
    • 4.7/5
    • (10 jobs)
    As the CEO of In-Flight Teams, I specialize in helping Retail and E-commerce businesses scale with omnichannel automation, CRM solutions, and custom software development. My goal is to empower your business with efficient, scalable, and high-impact technology solutions that drive growth and streamline operations. With over six years of experience in full-cycle software development, I bring expertise in building high-performing web applications, integrating seamless automation, and optimizing customer engagement through tailored digital solutions. Whether you're a startup or an established enterprise, I'm here to be your trusted tech partner 🤝. What I Offer: ✅ Custom CRM Solutions to enhance customer engagement and retention ✅ Omnichannel Automation for seamless retail and e-commerce operations ✅ Scalable Web & Mobile Applications tailored to your business needs ✅ Integration of APIs & Third-Party Services to optimize workflows ✅ Data-Driven Strategies for improving customer experience and sales ✅ Ongoing Maintenance & Support for long-term business growth Key Technical Skills: ☑️ Languages: JavaScript, TypeScript ☑️ Frameworks: React, Next.js, Node.js ☑️ Databases: MongoDB, Firebase, PostgreSQL ☑️ APIs: REST, GraphQL, WebSockets ☑️ Tools: Docker, CI/CD, Webpack, Vite ☑️ Automation & CRM: HubSpot, Salesforce, Custom-built solutions Why Work With Me? 🔹 Proven Track Record – Delivered 50+ successful projects globally 🔹 Industry Expertise – Deep understanding of retail & e-commerce challenges 🔹 Tailored Solutions – Focused on custom automation & growth-driven tech 🔹 Scalability & Performance – Ensuring long-term success of your business 🔹 Clear Communication – Transparent, proactive approach with regular updates Let’s collaborate and build high-impact solutions that take your business to the next level! 🚀
    Featured Skill React.js
    FlutterFlow
    Azure DevOps
    AWS Application
    Supabase
    Swift
    Firebase
    Kotlin
    Next.js
    Mobile App
    NodeJS Framework
    React
    Android App Development
    iOS Development
    Flutter
    Dart
  • $35 hourly
    • 5.0/5
    • (8 jobs)
    Hello, I'm Julia, CEO and Founder of GROUP325, a Top Rated Plus Agency. At GROUP325, we specialize in designing and developing cutting-edge digital products using the latest technology. Custom Software Development 💻 We build tailored software to meet your business needs, handling everything from consultation to deployment. Mobile & Web Development 📱💻 We create high-performance mobile and web apps, offering both native and cross-platform solutions. AI & ML Integration 🤖 We implement AI and ML to automate processes, enhance decision-making, and generate insights from your data. UI/UX Design 🎨 We design intuitive and visually appealing interfaces to improve user engagement and satisfaction. Hardware & Sensors Integration 🔌 We connect hardware and sensors with software for real-time data and IoT-driven solutions. Data Science & ML 📊 We turn data into actionable insights with advanced analytics and machine learning. QA and Testing 🛡️ We ensure your software is reliable, secure, and user-friendly through comprehensive testing. MVP Development 🚀 We build MVPs to validate your product idea with essential features quickly. Prototype Development 🛠️ We create prototypes to test and refine your ideas before full development. 📱💻 Technologies We Use: iOS: Swift, Objective-C Android: Java, Kotlin Hybrid App Development: React Native, Flutter, Ionic Web3: Rust & Solidity Backend: Node.js, PHP, Firebase Design: Figma, Adobe Photoshop, Adobe Illustrator, Sketch With no limitations on our tech stack, we deliver the best possible solutions for your digital projects. Let’s create something remarkable together.
    Featured Skill React.js
    Next.js
    UX & UI
    Web Development
    React Native
    Kotlin
    Java
    React
    Node.js
    Swift
    Objective-C
    Mobile App Development
    Native App Development
    iOS Development
    Android App Development
  • $50 hourly
    • 4.8/5
    • (32 jobs)
    🥇 TOP RATED PLUS (100% JSS) "I represent the top 3% of performers on Upwork being Top Rated Plus" - Upwork Full-stack developer with +8 years of professional experience and an overall of 12+ years of experience, specializing in: ✔ Java, Spring Boot, Spring Data JPA, Spring Security, Oauth2 ✔ Typescript, Angular, Angular Material.. ✔ Javascript Working with me, you will: ✔ Get fast response, clear communication ✔ Beautiful and reusable code, intuitive, and functional interface applying all the best practices ✔ Developer familiar with DevOps practices and CI/CD pipelines. About My Skills: Backend: ✅ JAVA, Java EE, JAX-RS, JUnits ✅ Spring Frameworks (Spring Boot, Spring MVC, Spring Data JPA, Spring Security, etc) ✅ Spring Security, Oauth2, Open ID Connect (OIDC) ✅ Hibernate ✅ Servlet, JUnit, Jackson, Gson, Concurrency in Java ✅ REST API, Swagger / Open API, Quartz, Lombok, REST, JSON, XML ✅ Apache Kafka ✅ Microservices Frontend: ✅ Angular, Angular Material, Typescript ✅ AG Grid, NGX Admin, Ng-Bootstrap, angular-oauth2-oidc ✅ ng2-charts, chart.js ✅ React ✅ Javascript ✅ HTML, CSS, LESS ✅ TailwindCSS ✅ Bootstrap, ExtJS CI/CD (DevOps) ✅ GIT, GitHub, GitLab ✅ GitHub Actions ✅ Docker ✅ Kubernetes ✅ Jenkins ✅ REST API ✅ AWS ✅ GKE Others: Software/tools/others; ✅ Database (MySQL, Oracle, SQL SERVER, T-SQL, DQL) ✅ Nodejs (Express, NPM) ✅ Maven, Gradle, TFS ✅ Oracle SQL Developer ✅ Amazon Cognito ✅ AWS Services ✅ GCP (Google Cloud Platform) ✅ Stripe ✅ Azure DevOps ✅ Visual Studio, Visual Studio Code ✅ IntelliJ, eclipse, Atom, Android Studio ✅ mRemoteNG ✅TFS, VSTS, SVN ✅ Tomcat ✅ Postman, SoapUI ✅ Unix, Linux ✅ Firebase, Firestore ✅ JIRA, ClickUp ✅ OpenText Documentum xCP ✅ EMC Documentum Composer [Documentum ✅ Composer (Deployer) - version 7.3] ✅ EMC Documentum Administrator (DA - Version 7.3) ✅ ECM Documentum Process Builder (DFC Version 6.7.3) ✅ BOF (Business Object Framework) ✅ dqMan 5 Standard (DCTM Client 6.7) ✅ Websphere ✅ Centera SDK (DELL) ✅ Internet Information Services (IIS) ✅ Administration VMWare, VirtualBox ✅ Install and Format Operate System Feedback: ⚡️"A brilliant experience!. Ginquel has been a superb addition and we will be working long into the future. You are in a safe pair of hands with Ginquel!." - Bluepod Media Worldwide Limited ⚡️"Ginquel is knowledgeable, capable and inspiring wok partner. He makes his research well and suggests the right direction to solve problems. His work ethic is admirable." ⚡️ "Ginquel is delivered beyond expectations. I couldn't be happier." I have worked with high-profile Organizations in my career, including the following to illustrate some of them: ✔ BNP Paribas (Revenue: 46.2 billion EUR (2021) ✔ Fujitsu (revenue 4.7 trillion yen (US$41 billion)) ✔ Timwe-Tech (operates in 80 countries) ✔ Accenture (+530K employees worldwide) ...
    Featured Skill React.js
    Stripe
    React
    Apache Kafka
    Amazon Cognito
    OAuth
    Docker
    Web Development
    Hibernate
    Spring Security
    Spring Boot
    JavaScript
    HTML
    Angular
    Spring Framework
    Java
  • $60 hourly
    • 5.0/5
    • (3 jobs)
    In the constant hunt for the newest technologies. Oriented for clean and maintainable code. Can help with building and supporting the project from scratch with any configurations. ___________________________________________ Key Skills and Expertise: - Microservice Architecture & Design: Specialist in designing and implementing scalable, robust software solutions using microservices principles, including expertise in CQRS and Event-Driven Architectures. Proficient with message queue technologies like Kafka and RabbitMQ for building asynchronous and reliable communication systems within microservice environments. - Full-Stack Development & Clean Code: Highly capable in both front-end and back-end development, committed to writing clean, well-documented code across the entire stack. - Cross-Platform Performance Optimization: Expert in ensuring seamless cross-platform compatibility and dedicated to performance optimization for efficient and long-lasting software. - Quality Assurance & Rigorous Testing: Committed to delivering stable, high-performing software through rigorous testing, debugging, and a focus on quality assurance practices. - Responsive Design & User Experience: Focused on creating excellent user experiences across all devices through responsive design implementation and maintenance. - Security, Scalability, and Maintainability Advocate: Deeply considers crucial non-functional requirements like security, scalability, and maintainability throughout the software development lifecycle. - Proactive Maintenance & Performance Enhancement: Experienced in proactive application maintenance for production environments and excels at identifying and implementing performance enhancements. - Automation for Efficiency: Strategically leverages automation to significantly improve team and process efficiency. ___________________________________________ Core tech stack: Backend: Node.js, Nest.js, Express.js Frontend: React, Next.js, AWS SDK Blockchain: Ethers.js, Web3.js, Truffle, Hardhat, Moralis DevOps: AWS, K8s, CI/CD, AWS CDK
    Featured Skill React.js
    Problem Solving
    Integration Testing
    CI/CD
    Amazon Web Services
    Next.js
    React
    Gatsby.js
    Docker
    Node.js
    Kubernetes
  • $50 hourly
    • 5.0/5
    • (6 jobs)
    Hey everyone. I have +8 years of experience building full stack javascript web applications. I'm pretty good with: - Nodejs - Vuejs - MongoDB I also have experience working with various services such as: - Auth0 - Firebase - Stripe - Redis - Sendgrid Overall if you need something done in Javascript, I can do it.
    Featured Skill React.js
    Tailwind CSS
    Nuxt.js
    Node.js
    HTML
    Vue.js
    MongoDB
    Next.js
    Vuetify
    JavaScript
    Web Development
    React
    HTML5
    SCSS
  • $50 hourly
    • 5.0/5
    • (37 jobs)
    Hard-working web developer with 6+ years of experience in developing, testing, debugging, deploying and maintenance of web applications. Experienced with back-end development, front-end development and third-party API integration. I prefer to use Python(Django, Flask) for the back-end, but PHP(CodeIgniter, Zend, Symfony) is also available. I am also skillful with JavaScript(jQuery, ReactJS), CSS and HTML for the front-end development. Third-party API integration, especially OAuth based API integration, will be my another skill.
    Featured Skill React.js
    API
    Data Scraping
    Web Development
    JavaScript
    API Integration
    Flask
    Python
    PostgreSQL
    MySQL
    React
    WordPress
    HTML
    Django
    jQuery
    PHP
  • $50 hourly
    • 5.0/5
    • (2 jobs)
    As a dedicated Low-Code Specialist with a proven track record of leveraging innovative technologies to drive transformative outcomes, I bring forth a unique blend of expertise in software engineering and SAP ABAP development. With over six years of industry experience, I am adept at harnessing the power of low-code platforms to architect scalable solutions that redefine operational efficiency and elevate organizational performance. Expertise: Low-Code Development with Retool: Renowned for my proficiency in low-code development, particularly with Retool, I have spearheaded the design and implementation of groundbreaking solutions for a diverse clientele. With a keen understanding of Retool's capabilities, I have orchestrated the development of bespoke applications and internal tools that empower businesses to streamline processes, enhance collaboration, and drive innovation. SAP ERP Proficiency: Complementing my low-code expertise is a deep-rooted understanding of SAP ERP, with a focus on SAP ABAP development. My comprehensive knowledge spans key modules such as WM, MM, PP, and EWM, enabling seamless integration and optimization of business-critical processes within the SAP landscape. Recent Engagements: In my recent engagements, I have collaborated with esteemed organizations across various industries, delivering tailored solutions that address their unique challenges and propel them towards success. Noteworthy projects include architecting a comprehensive CRM system for an olive oil factory, optimizing internal workflows and customer interactions through seamless integration with payment systems, email and SMS communication, and PDF generation. Driven by a passion for innovation and a relentless commitment to excellence, I am poised to continue making a meaningful impact in the realm of low-code development. With a proven ability to translate complex requirements into intuitive solutions, I am eager to embark on new challenges and contribute to the ongoing evolution of technology-driven ecosystems.
    Featured Skill React.js
    ABAP
    SAP
    React
    SQL
    Database
    JavaScript
    Task Automation
    API
    Python
    Automation
    Data Scraping
    Scripting
  • $35 hourly
    • 5.0/5
    • (2 jobs)
    Hello, FullStack .NetCore/React Developer, looking to help you at building scalable and maintainable app. Background in Electronic Engineering but have been working in FullStack for about 3 years. I have good knowledge of the React ecosystem and most relevant libraries, to build an app from the ground up. Right now trying to focus on providing UI to replace business oriented problems, bringing things like interactive tables and data visualisation to replace excel workflows. Some of my experiences and knowledge: - Javascript/Typescript - ReactQuery, Zustand, Redux-Toolkit... - Css, Tailwind, clsx... - ReactHook-Form, Formik, Zod... -Nextjs -Any Rest API integration, Axios/Fetch, Odata. In my portfolio I have a complete diagram with all technologies we have worked on.
    Featured Skill React.js
    React
    Redux
    JavaScript
    .NET Core
    TypeScript
    .NET Framework
    C#
  • 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 React.js Developers in Portugal
Show more