Hire the best Web Application Developers in Spain

Name: Web Application developers
Brand: Upwork
Rating: 4.7 (106 reviews)

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Clients rate Web Application developers

4.7/5

based on 106 client reviews

$65 hourly
Aida O.
- 5.0/5
- (7 jobs)
Love the way you show up online with a website that matches the impact of your brand. I help entrepreneurs and small business owners build their corner on the internet with the same passion and authenticity with which it was imagined. Whether you're just starting out and need help getting your website off the ground, or you're running a business that’s ready for a refresh, I take the stress out of the process—so you don’t have to waste time figuring out design, tech, and all that. You focus on growing your business, and I’ll make sure your website looks the part. By using a visual strategic approach, I’ll turn your website into a memorable experience with a strategic application of your branded assets, user-friendly navigation, intuitive layouts and page flows, SEO support, and high-quality design throughout. 💻 What can I do for you (design & development): * Landing pages * Blogs * Enterprise builds: filter & search options (real estate, directories, etc.) * CMS setup * Newsletter integration * Social media integration * Website re-design With Webflow I can create unique and responsive websites that are tailored to your band and business needs. Making them dynamic, accessible, and easily scalable. Your site will be interactive and user-friendly with an intuitive layout that makes it easy for visitors to find what they are looking for. Each website I build includes: • SEO optimization • Speed optimized. • 100% Responsive across all devices • GDPR Compliant Cookie Consent • CMS Setup and Onboard • Use of Finsweet's Client-First style system (upon request) • A Style Guide page for easy maintenance/site edits • 2 to 4 weeks post launch support! 🤔 Does your website that looks like yester-years? I can help with that too! 📄 Do you already have a design or wireframe that you'd like me to bring to life? I will build your Figma or Adobe XD website design pixel perfect on Webflow with turn times of 5 to 7 days. I look forward to meet you! Aida

Web Application
Airtable
Automated Workflow
Social Media Account Integration
Visual Design
Social Media Design
Social Media Page Setup
Social Media Carousel
Feed Template
Custom Web Design
Adaptive Web Design
Figma
Webflow
Web Design
Mockup
$65 hourly
Mark B.
- 5.0/5
- (2 jobs)
Experienced Full-Stack Developer | 9+ Years of Building Scalable, High-Performance Solutions I’m a seasoned full-stack developer with over 9 years of hands-on experience in building, optimizing, and maintaining web applications across various industries. I specialize in delivering scalable, high-performance solutions with clean, maintainable code that adheres to the best practices. What I Offer: 🚀 Custom Web Development: Whether you need a complex web app built from the ground up or enhancements to an existing project, I can take care of both front-end and back-end development. I work with technologies like React, Next.js, Node.js, and MongoDB to build fast, responsive, and scalable applications. 💡 API Development & Integration: I’m experienced in designing and integrating RESTful and GraphQL APIs, ensuring seamless communication between services. 🔎 Web Scraping & Data Parsing: I have extensive experience in automating the extraction of data from websites and online services. Using tools like Puppeteer, Cheerio, and custom-built parsers, I can help you gather, process, and structure large amounts of data from various sources, whether for market research, product listings, or content aggregation. I ensure efficiency, accuracy, and compliance with scraping best practices to avoid interruptions. 🎨 Front-End Optimization: Using modern frameworks (React, Redux, Three.js), I create intuitive and dynamic user interfaces that enhance the user experience. 💻 Automation & Scripting: From web scraping with Puppeteer to task automation, I can help you streamline repetitive tasks, saving time and reducing human error. 📁 WordPress & WooCommerce Development: Expertise in both, as well as PHP development allows me to build and maintain high-performance plugins, themes, as well as modification of existing ones. ☁️ Cloud Solutions & AWS Integration: From serverless architectures with AWS Lambda to storage and authentication with S3 and Cognito, I ensure that your app is optimized for the cloud with a focus on scalability and cost-effectiveness. Tech Stack Expertise: JavaScript, TypeScript, Node.js, React, Next.js, Redux PHP, SQL, MongoDB, MySQL AWS (Lambda, S3, Cognito, SQS), DynamoDB ELK stack, Git, Scrum WordPress, WooCommerce, Puppeteer, Three.js Remotion, FFmpeg, WebGL I pride myself on strong communication, reliability, and delivering exceptional results. Let’s discuss how I can help you turn your project vision into reality.

Web Application
FFmpeg
HTML5
Web Scraping
Ecommerce
AWS CloudFormation
Redux
MongoDB
WordPress
TypeScript
PHP
Web Development
React
MySQL
Node.js
$25 hourly
Alain S.
- 5.0/5
- (9 jobs)
Vast Experience in web technologies. Extensive knowledge of PHP,MySQL, HTML,JavaScript,jQuery, CSS. Excellent data processing and debugging skills. Great communications. CodeIgniter, Bootstrap, various API integration.

Web Application
Database
HTML5
CSS 3
MySQL
SQL
JavaScript
AJAX
CodeIgniter
jQuery
Bootstrap
HTML
PHP
Custom PHP
$70 hourly
Pavel L.
- 5.0/5
- (8 jobs)
::::: Project managemet systems ✓ MS Azure Team Services ✓ Jira, YouTrack, GitHub, Trello ✓ GIT ::::: Frontend expert ✓ HTML 5, CSS 3.0 (+adaptive design) ✓ JavaScript, TypeScript ✓ Angular (Angular Material) + RXjs ✓ SignalR, SocketIo, Babylonjs, ThreeJs, PDF.js, PDF-lib, PDF-Assambler, ✓ Firebase / Firestore ✓ jQuery / Lodash / Moment / Bootstrap ✓ UI expert ✓ Google-api (auth, maps, translate, disk...), Yandex-api, Dropbox-api, FB-api, vk-api, Social Newtorks etc. ... ✓ WebPack, Gulp, Grunt ✓ Web Worker ::::: Backend expert: ✓ C# (.NET) ✓ .NET core, .NET freamwork, ASP.NET boilerplate ✓ SQL, T-SQL, azure-sql, azure-storage ✓ Redis, Dapper ✓ Unit testing ::::: DevOps Engineer ✓ Azure ✓ Initiate project ✓ Setup infrastructure ✓ Deployment (TeamCity, Octopus, Visual Studio) ✓ Release Management ✓ Support I do what it takes to complete the goal. Tasks, approaches and even tools, they are always different and developing, so I rarely see the point in remembering something very specific - such as api framework or even language details. When a task is focused and repeated, I make different snippets/helper configs/cheat sheets for increasing speed and orientation. And even if I wanted to forget about something I repeat 100 times a day, I could not. When the project turns up, I unload it from my memory and upload there new data from a new area. I have a little hard-drive, if you catch my drift, but very effective RAM. These qualities help me look at the problem afresh; to check, find and implement the latest technologies and solutions for my projects. Taking into account software development dynamics, this approach seems quite logical. I know and use a lot of things, I realize I can't know everything, and I am open to wide range of proposals, especially for positions with career and personal growth. Multitasking is my strong side, though I also can perform agile and specialized tasks almost like a focused developer. But I easily compensate it with process automation, goal-orienting, perseverance and working from home where I have all the conditions I need and all the time available except sleep. I might have liked to be a narrower specialist, but the clients can't be chosen - they should be provided with a service. ps: I have 3 years + of work experience with Azure services

Web Application
Microsoft SQL Server Programming
.NET Core
SignalR
TypeScript
JavaScript
ASP.NET
C#
Angular
$85 hourly
Mark C.
- 4.9/5
- (12 jobs)
I truly enjoy building software. Over the past 15 years, I've had the privilege of building many challenging and interesting software solutions. I have worked within large software organizations but also in small teams. In recent years I've often worked independently, either helping organizations kickstart new projects or building entire systems myself. Some of the things I've built: - Web application back-ends (Node.js, Python, .Net). - Responsive, accessible and progressive web front-ends (React, TypeScript, JavaScript, CSS, HTML). - Secure and scalable identity solutions (OAuth, OpenId Connect, SAML, Auth0, Ping Identity). - Interactive data visualization systems (SVG). - Programs that integrate cool hardware such as infrared sensors, solar panels, touchscreens, wireless GPS units, NFC card readers and more. - Deployment architectures that autoscale in the cloud (AWS, Docker, GitHub). I believe that: - Quality depends on concise and structured communication. - The best way to learn is to produce working software (iterative development). - Staying focused only on what's most important is paramount to success.

Web Application
TypeScript
SVG
OAuth
.NET Core
Node.js
React
Docker
Auth0
Relational Database
NoSQL Database
CSS
Amazon Web Services
Python
JavaScript
$40 hourly
Serhii C.
- 4.9/5
- (78 jobs)
👋 Hi there, I definitely want to hear from you! 🤗 Would you like to achieve more with the D-Design? ❗️ I am here to help. Check my previous work history! 77 5 stars feedbacks and I just adore what I do. My goal = your result. With 7+ years of experience, 500+ successful projects, and 20,000+ hours of expertise in User Experience Design, UI/UX, and Web Application development, I help businesses increase conversions, optimize engagement, and scale online success with strategic Adobe Photoshop, Adobe Illustrator, and Adobe InDesign-backed illustration designs. 🏆 Our Web Designer & UI/UX Solutions ✔️ 7+ years of experience in Web Design, Branding & Marketing, and UI/UX Design ✔️ 510+ high-fidelity design projects across eCommerce, SaaS, startups, and enterprise websites ✔️ 64+ industry awards & recognitions, including features on Upwork & leading design platforms ✔️ 42+ countries served, providing custom web solutions for global brands ✔️ 20,000+ hours of expertise in UX & UI, Web Application, and Web Development ✔️ 50% increase in eCommerce sales through optimized UX & UI experiences ✔️ SEO-driven shopify website design leading to a 60% boost in organic traffic ✔️ Bounce rates reduced by 35% and conversion rates increased by 48% through strategic UX enhancements ✔️ Landing pages optimized for 45% more lead generation and 30% lower ad spend costs ✔️ Expertise in diverse industries: Technology & IT, Healthcare, Finance, Real Estate, SaaS, Education, Retail, Travel, Sports & Wellness 🚀 Web Design, UX & UI, and Web Development - Creating Impactful Online Experiences We design & develop user-friendly, scalable, and high-performing website using React, Laravel, Node.js, HTML5, CSS3, PHP, and jQuery to enhance engagement and drive revenue. 📌 Comprehensive Web Design & UX Strategy 🔹 Custom Web Design in Figma & Adobe Illustrator—tailored for Brand Identity & Guidelines 🔹 Conversion-optimized UI/UX for Websites & eCommerce—increasing conversions by 48% 🔹 A/B Testing, Heatmap Analytics & Usability Research—reducing bounce rates by 35% 🔹 Mobile-First & Adaptive UX/UI—boosting engagement by 40% and ensuring 100% responsiveness 📌 Web Development - Building Fast, Scalable & SEO-Optimized Websites 🔹 Custom WordPress, Webflow Designer, Shopify, WooCommerce, and HTML/CSS Development 🔹 SEO-optimized, fast-loading, and accessible websites—reducing load time by 50% 🔹 Landing Page Development with Front-End Perfection—boosting lead generation by 50% 🔹 HTML, CSS, JavaScript, Laravel, React, Node.js, jQuery, and CSS3 for scalable web developer 📌 eCommerce UX/UI & Web Development - Maximizing Sales & Customer Experience 🔹 Custom Shopify, WooCommerce, and Webflow Store Design & Development 🔹 Optimized Checkout Flow UX—reducing cart abandonment by 35% 🔹 AI-driven Product Page UX Enhancements—leading to a 45% increase in conversion rates 🔹 Dynamic filtering, personalized recommendations & intuitive navigation for eCommerce success 📌 Landing Page UX/UI & Development - Turning Clicks Into Conversions 🔹 High-converting, SEO-friendly Landing Page Design & Redesign 🔹 Conversion-Optimized CTA Placement & A/B Testing—improving lead generation by 40% 🔹 Mobile-First Landing Page Structures—increasing form submissions by 30% 🔹 Custom UI Animations & Microinteractions for Higher Engagement 📌 UI/UX Design - Crafting Visually Stunning & User-Centered Interfaces 🔹 Figma Prototyping, Wireframing & High-Fidelity Web Mockups 🔹 Interaction Design, Motion UX & Smooth Microinteractions for Enhanced User Experience 🔹 User Interface Design & Information Architecture for Clear, Effective Navigation 🔹 Accessibility-First Wix Web Design (WCAG, A11Y) for Inclusive Digital Experiences 📌 SEO-Optimized Web Design & Content Strategy 🔹 On-Page SEO Integration in Web Development for Higher Rankings 🔹 Optimized Heading Structures, Core Web Vitals & Schema Markup 🔹 Keyword-Driven UX Copywriting & Landing Page Content Optimization 🔹 Mobile UI Design Speed Optimization & Lazy Loading for Fast Performance 💡 Web Design & UX/UI Designer Innovation Backed by Data & Research We don’t just create visually stunning websites—we craft experiences that increase revenue, lower acquisition costs, and enhance usability. ✅ Up to 300% increase in lead generation through optimized UX & UI ✅ Behavioral Insights & Data-Driven UX Strategies for measurable success ✅ UX Research & Testing to Ensure Frictionless Website Designer Navigation ✅ Optimized UI Flow That Reduces Customer Drop-Off by 40% ✅ AI-powered insights (ChatGPT, DALL-E, Bard AI) for predictive UX/UI improvements ✅ Faster page load speeds, improved site performance & enhanced SEO rankings 🚀 Let’s Build Your Next High-Converting Website! 📞 Looking for a top-tier Web Design, UX & UI, Web Development, Logo Design, or Landing Page expert? 🔗 Portfolio: league-design.com/websites/ July 10, 2025

Web Application
CSS
WordPress
Mobile UI Design
HTML
Figma
Logo Design
User Interface Design
Landing Page
Web Design
Graphic Design
User Experience Design
Adobe Photoshop
Adobe Illustrator
UX & UI
$75 hourly
Weverson M.
- 5.0/5
- (20 jobs)
Hey there! I've over 3,000 hours as a full-time Bubble.io Developer, 14+ years in Web Development, and a Graphic Design degree. "Weverson took the time to understand my business and delivered everything we asked on time." (Ben B.) If you're looking for high-level UI/UX or to integrate Bubble.io with AI and other APIs, my experience covers OpenAI (ChatGPT/GPT-4o), QuickBooks, Binance, Stripe, PayPal, SignNow, and more. I've worked on diverse projects including marketplaces, cryptocurrency platforms, city guides, dashboards, sports management, finance, and more. Cameron described me as a "very talented Bubble developer who communicates well, is reliable, and thinks entrepreneurially, which means he'll present ideas and offer suggestions on how to improve existing ideas." Let's chat. I'm excited to understand your business and see how I can help. Cheers, Weverson

Web Application
Mobile App Design
No-Code Development
Bubble.io
API
App Design
API Integration
Web UI
Web Design
$50 hourly
Michel N.
- 5.0/5
- (7 jobs)
Michel Thomaz is a multidisciplinary and multifaceted designer, with a strong presence in Multi-Dimensional Design. His work, both personal and commercial, always revolve around a question like north, a purpose. Due to having lived in different countries with totally divergent cultures and being exposed to different people and their ways of acting, Michel chooses to bring peculiar and, at the same time, exclusive perspectives to each of his projects. Always in search of new knowledge, Michel constantly decides to venture into new topics, from 3D modeling and asset creation, to photography, web design and even SEO metrics, Google Ads, among others. From 3D Modelling, to HTML and CSS, Wordpress Website Creation, Michel is a full time graphic designer with knowledge on multiple-fields, the perfect freelancer to fulfill any digital task you request.

Web Application
Web Design
3D Modeling
Adobe InDesign
Visual Art
Adobe Illustrator
3D Rendering
Cycles Render
Chaos Corona
Rendering
Architectural Graphics
CSS
HTML
WordPress
Adobe Photoshop
$40 hourly
Elena V.
- 4.5/5
- (11 jobs)
I'm a web developer that now also create apps and enjoy doing it. Whether you have a big project in mind, or you want a showcase for your business on the web, count on me. · Organized and proactive · Full involvement in projects from start to finish. · Knowledge of HTML, CSS, Vanilla JavaScript, React and Vue, TypeScript, Java, Docker, Wordpress and much more!

Web Application
Web Server
React Native
Web API
App Development
Docker
Node.js
Next.js
WordPress
CSS
React
JavaScript
Spring Boot
Java
MySQL
$35 hourly
Oksana K.
- 5.0/5
- (5 jobs)
🚨Are you looking for a seasoned Full Stack Developer 🌟 who can transform your vision into a high-performance digital product❓Look no further❗️With over 𝟵 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗵𝗮𝗻𝗱𝘀-𝗼𝗻 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 🏆 I specialize in building robust 🦾 scalable 🚀 and intuitive web applications using the latest technologies like 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀, 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗮𝗻𝗱 𝗡𝗼𝗱𝗲.𝗷𝘀 🔥🔥🔥 ⛑ 𝗪𝗛𝗬 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘? 🚀 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗔𝗰𝗿𝗼𝘀𝘀 𝘁𝗵𝗲 𝗦𝘁𝗮𝗰𝗸: Whether it's front-end magic with 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀/𝗔𝗻𝗴𝘂𝗹𝗮𝗿 or back-end power with 𝗡𝗼𝗱𝗲.𝗷𝘀, I've mastered the full stack. I ensure seamless integration, clean code, and efficient solutions that meet your business goals 🏆 🌟 𝗧𝗮𝗶𝗹𝗼𝗿𝗲𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: I believe in a user-centric approach, tailoring every project to meet your unique needs. From dynamic single-page applications to complex enterprise systems, I deliver solutions that drive success 👑 💪 𝗔𝗴𝗶𝗹𝗲 𝗮𝗻𝗱 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝘃𝗲: I thrive in agile environments, working closely with clients to ensure their vision is realized at every stage. Transparent communication, iterative progress, and on-time delivery are my top priorities ⏱ ⛑ 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗮𝗻𝗱 𝗦𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: I build with the future in mind, ensuring your applications are not only fast and responsive but also scalable and maintainable. I'm committed to delivering quality that stands the test of time 🏄‍♀️ 🆕 𝗖𝘂𝘁𝘁𝗶𝗻𝗴-𝗘𝗱𝗴𝗲 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: Staying updated with the latest trends and technologies is key. I constantly refine my skills to leverage the best tools and practices in the industry, including TypeScript, Express, MongoDB, AWS, and more ⚜️ 🏆 𝗠𝘆 𝗞𝗲𝘆 𝗦𝗸𝗶𝗹𝗹𝘀 𝗜𝗻𝗰𝗹𝘂𝗱𝗲: 🏆 ✅ 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱: React.js, Angular, Redux, HTML5, CSS3, SASS, Bootstrap, Material UI ✅ 𝗕𝗮𝗰𝗸-𝗘𝗻𝗱: Node.js, Express.js, RESTful APIs, GraphQL ✅ 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: MongoDB, MySQL, PostgreSQL ✅ 𝗗𝗲𝘃𝗢𝗽𝘀: Docker, Kubernetes, CI/CD Pipelines, AWS, Azure ✅ 𝗧𝗲𝘀𝘁𝗶𝗻𝗴: Jest, Mocha, Chai, Cypress 💫 𝕎𝕙𝕒𝕥 𝕄𝕪 ℂ𝕝𝕚𝕖𝕟𝕥𝕤 𝕊𝕒𝕪: 💫 💬 "𝘈𝘯 𝘦𝘹𝘤𝘦𝘱𝘵𝘪𝘰𝘯𝘢𝘭 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘦𝘳 𝘸𝘩𝘰 𝘤𝘰𝘯𝘴𝘪𝘴𝘵𝘦𝘯𝘵𝘭𝘺 𝘥𝘦𝘭𝘪𝘷𝘦𝘳𝘴 𝘩𝘪𝘨𝘩-𝘲𝘶𝘢𝘭𝘪𝘵𝘺 𝘸𝘰𝘳𝘬. 𝘏𝘪𝘴 𝘢𝘣𝘪𝘭𝘪𝘵𝘺 𝘵𝘰 𝘩𝘢𝘯𝘥𝘭𝘦 𝘤𝘰𝘮𝘱𝘭𝘦𝘹 𝘵𝘢𝘴𝘬𝘴 𝘸𝘪𝘵𝘩 𝘦𝘢𝘴𝘦 𝘪𝘴 𝘪𝘮𝘱𝘳𝘦𝘴𝘴𝘪𝘷𝘦." 💬 "𝘌𝘧𝘧𝘪𝘤𝘪𝘦𝘯𝘵, 𝘳𝘦𝘭𝘪𝘢𝘣𝘭𝘦, 𝘢𝘯𝘥 𝘢 𝘵𝘳𝘶𝘦 𝘦𝘹𝘱𝘦𝘳𝘵 𝘪𝘯 𝘧𝘶𝘭𝘭-𝘴𝘵𝘢𝘤𝘬 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵. 𝘛𝘩𝘦 𝘱𝘳𝘰𝘫𝘦𝘤𝘵 𝘦𝘹𝘤𝘦𝘦𝘥𝘦𝘥 𝘰𝘶𝘳 𝘦𝘹𝘱𝘦𝘤𝘵𝘢𝘵𝘪𝘰𝘯𝘴." 🚀 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗕𝗿𝗶𝗻𝗴 𝗬𝗼𝘂𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝘁𝗼 𝗟𝗶𝗳𝗲? 🚀 Let’s collaborate to build something extraordinary! Whether you need a new web application, a feature upgrade, or technical consultation, I'm here to help. Drop me a message, and let's discuss how we can achieve your goals together 🚀🚀🚀 KEYWORDS: Full-stack development | fullstack developer | web development | React.js | Angular | Node.js | JavaScript | HTML5 | CSS3 | TypeScript | front-end development | frontend developer | back-end development | backend developer | MongoDB | MySQL | PostgreSQL | Express.js | RESTful APIs | GraphQL | Bootstrap | Material UI | SASS | LESS | Redux | Docker | Kubernetes | CI/CD pipelines | AWS | Azure | Firebase | Git | GitHub | Bitbucket | DevOps | Agile development | Scrum | responsive design | single-page applications | SPAs | web apps | cross-browser compatibility | performance optimization | web security | authentication | authorization | JWT | OAuth | JSON | AJAX | WebSockets | API integration | microservices | serverless architecture | cloud computing | MVC architecture | database design | NoSQL | SQL | data modeling | TDD | unit testing | integration testing | Jest | Mocha | Chai | Cypress | Selenium | continuous integration | continuous deployment | code review | code quality | design patterns | MVC | MVVM | version control | object-oriented programming | OOP | functional programming | ES6+ | npm | yarn | package management | web components | PWA | progressive web apps | mobile-first design | UI/UX design | wireframing | prototyping | REST architecture | SOAP | XML | Redux-Saga | Next.js | Nuxt.js | Angular CLI | React Router | server-side rendering | SSR | client-side rendering | CSR | SEO optimization | Webpack | Babel | Gulp | Grunt | software architecture | system design | debugging | troubleshooting | web accessibility | ADA compliance | node js developer | react js node js | node js angular | mongodb node js | backend nodejs | backend nodejs | nodejs developer | react nodejs | nodejs mongodb | typescript nodejs | node.js developer | react.js node.js | backend node.js | node.js aws | vue.js node.js | backend nodejs | react | react developer | react native | react native mobile | react typescript | beta reader | reactjs | reactjs redux | reactjs developer | reactjs typescript | react.js | react.js node.js | react.js developer

Web Application
Node.js
HTML5
CSS
Web Design
HTML
React
Web Development
JavaScript
MySQL
Python
API Integration
API
TypeScript
PHP
$35 hourly
Serhii B.
- 5.0/5
- (2 jobs)
Hello! I collaborate with startups, teams, and entrepreneurs, helping to develop and create their digital products and websites. While I'm a newcomer to the Upwork platform, I bring 10 years of experience in FinTech, E-Learning, and E-Commerce. My notable clients include My Learning Hub (UK), Hubforce (USA), Samsung (UA), GoSnami (ES), Abu Dhabi Distribution (AE), Raiffeisen Bank (UA), Mercedes (UA), Credit Agricole (FR), and Alfa Bank (UA), all of whom have been satisfied with the results and continue long-term collaborations. I enjoy identifying and solving visual problems, understanding that optimal user interfaces and products should not only be visually appealing but also function effectively, achieving business goals. I also lead a full-cycle development team, successfully completing turnkey projects by combining design, development, and project management expertise. 🔷 What I do: ✅ User Interface Design (UI) ✅ User Experience Design (UX) ✅ iOS / Android app design ✅ Motion design and animation JSON ✅ Web design ✅ Prototyping ✅ User research and testing ✅ Wireframes, sitemap, user flows ✅ Product strategy ✅ Design thinking ✅ Pitch Deck ✅ Banner Ads 🔷 Tools I use: ✅ Figma, Adobe Suite ✅ Miro, FigJam ✅ Hotjar, Maze, Axure RP, InVision ✅ Webflow, Wix, Tilda ✅ Jira, YouTrack, Asana, Linear ✅ ChatGPT, MidJourney, Stable Diffusion, DALL-E ✅ Slack, Microsoft Teams, Zoom, Email Dive into my profile and see for yourself that I'm the one you've been looking for. Let's collaborate and bring your ideas to life with engaging and user-friendly design.

Web Application
Landing Page
UI Animation
UIKit
Product Strategy
SaaS
Mockup
UX & UI
Web Design
User Flow
User Interface Design
User Experience
Mobile App Design
Figma
$35 hourly
Adrian H.
- 5.0/5
- (2 jobs)
👋 Hey, I’m Adrián – a Web Designer specialized in Framer, focused on building visually stunning websites for tech brands and digital products. ⚡ Why Work With Me? ✔️ Designed for Tech – I speak the language of modern tech brands: clean, fast, and bold. ✔️ High-Converting Landing Pages & Websites – Built to convert. ✔️ UX/UI – Designs they make sense. ✔️ Framer Expert – Creating dynamic, scalable websites lightning-fast. ✔️ Zero Fluff, All Strategy – Focused on goals, not guesswork. 💡 What You Get ✦ A design process rooted in business thinking ✦ Clear milestones, fast iterations, and no communication gaps ✦ Pixel-perfect execution and attention to every interaction ✦ A collaborative partner—not just a service provider 🚀 My Work Process 1️⃣ Brief & business goals 2️⃣ Research & wireframing 3️⃣ Visual design & development in Framer 4️⃣ Feedback rounds 5️⃣ Launch-ready website that delivers You’re not hiring a freelancer. You’re partnering with someone who understands how to turn visuals into growth. 📩 Let’s connect and craft a site your users remember and your investors respect.

Web Application
UX & UI Design
SEO Performance
Responsive Design
Web Design
Adobe Premiere Pro
Adobe Photoshop
Figma
Framer
$60 hourly
Luis Armando Z.
- 5.0/5
- (1 job)
I'm a versatile cross-platform developer with a strong background in creating comprehensive digital solutions. My expertise includes: Web Development: Proficient in PHP (CodeIgniter) and JavaScript, I craft dynamic, responsive websites tailored to each client's specific needs. Mobile Application Development: Skilled in Flutter Flow, I design intuitive mobile apps that ensure exceptional user experiences across platforms. Graphic Design: With a talent for drawing and designing unique T-shirt graphics, I bring creative concepts to life.

Web Application
App Development
Web Development
Smartphone
iOS Development
Android App Development
$50 hourly
Oliver C.
- 5.0/5
- (0 jobs)
I’m a highly experienced developer specializing in AI automation, software development, product innovation, and scripting. My passion lies in crafting scalable, efficient solutions that tackle real-world challenges. Over the years, I’ve led cross-functional teams, streamlined complex workflows, and delivered projects on time and within budget. By leveraging the latest technologies and best practices, I ensure that every product I create meets high standards of performance and reliability. Whether it’s building robust software from the ground up, integrating AI-driven features, or automating repetitive tasks, I thrive on turning ideas into impactful solutions.

Web Application
AI App Development
AI Agent Development
Mobile App
International Development
Product Development
Scripting
Script
Web Development
Artificial Intelligence
$70 hourly
Viacheslav K.
- 4.9/5
- (55 jobs)
I’m a full-stack developer with a focus on Python, Django, and web technologies (Vue.js), bringing expertise in both front-end and back-end development. I’ve had the opportunity to work with a wide range of clients, helping them achieve their goals with high-quality, efficient solutions. I pride myself on being proactive in solving problems and maintaining excellent communication throughout every project. My clients appreciate my ability to understand their needs, provide insightful suggestions, and offer innovative approaches that improve the final product. I’ve worked on various projects, including DeFi applications, complex data visualization systems, and custom web solutions. I’m always open to learning new technologies to meet the evolving requirements of a project, and I adapt quickly to changes. Whether I’m working individually or in a small team, I ensure that projects stay on track with a focus on quality and detail. I strive to make the development process as smooth as possible for my clients and value building strong, long-lasting professional relationships. If you’re looking for a reliable, skilled developer who can not only meet your expectations but exceed them, I’d be happy to discuss how I can help with your next project. Main experiences: Create, maintain, and extend web applications based on Python\Django. Front-end development using Vue.js, Nuxt.js, Figma\PSD. Web3 Software: PyCharm Professional, Trello, Github, Github Copilot. Hardware: i9-14900KF, 32GB RAM, SSD, RTX 4070ti, Meta Quest 3.

Web Application
Front-End Development
Smart Contract
Heroku
Stripe
Solidity
Back-End Development
DigitalOcean
RESTful API
Website
Web Development
CSS
Django
JavaScript
Three.js
Nuxt.js
Python
$70 hourly
Agustin B.
- 4.8/5
- (10 jobs)
Full stack JavaScript and Typescript Developer with more than 10 years of experience My experiences range from building responsive sites that work well cross-browser to building scalable sites for the financial services industry. I like working on projects with a team that cares about creating beautiful and usable interfaces. I'm flexible with my working hours and i am happy to work closely with any existing freelancers you work with. Client side: - JavaScript - VueJS - Vue3 - Vuex - React - Angular - RxJs - HTML 5 - CSS - SASS - Qwik - Tailwind CSS - Bootstrap Server side: - Node.js (Express, Sails.js) - MySQL, - MongoDB, - NuxtJS - Nuxt Certification - WebSockets Other: - Mixpanel - Issue tracking: JIRA, Trello - VCS: GIT (Bitbucket, Github, Gitlab), SVN - Documentation: Github/Redmine Wiki - Notion

Web Application
API Integration
Code Refactoring
TypeScript
Web Development
SEO Performance
Mixpanel
React
Node.js
Angular
Vue.js
JavaScript
Nuxt.js
Serverless Stack
API
$60 hourly
Julian M.
- 4.6/5
- (16 jobs)
Experienced Full-Stack PHP Developer Specializing in Symfony and React I am a seasoned Full-Stack Developer with extensive experience in Symfony and React. My passion lies in translating complex client needs into effective, high-quality solutions that drive business growth. What I Offer: In-Depth Consultation: I take the time to understand your unique needs by asking insightful questions before any coding begins. Collaborative Development: Partnering closely with project managers, clients, designers, and stakeholders, I ensure that the final product meets and exceeds expectations. Technical Expertise: In addition to Symfony APIs and web applications, I bring solid experience with JavaScript frameworks, Laravel, Drupal, and WordPress. My Approach: Simplicity and Maintainability: I focus on creating clean, efficient, and easy-to-maintain code. User Experience: Delivering software that is both intuitive and enjoyable to use is a core principle in my development process. Reliability: Committed to meeting deadlines and ensuring top-quality results, I expect the same level of dedication from my clients. I am dedicated to turning your vision into reality. Feel free to request a detailed CV to learn more about my background and how I can contribute to your project. Let's collaborate and build something amazing!

Web Application
Management Skills
Cross Functional Team Leadership
Software Architecture & Design
Domain-Driven Design
Web Service
API Development
Agile Software Development
React
CSS
PHP
JavaScript
Symfony
WordPress
jQuery
$85 hourly
Anna P.
- 5.0/5
- (43 jobs)
🥇VERIFIED TOP 1% Designer on the Upwork. 🧑‍💻 10+ years of experience in UX/UI design for SaaS, AI-powered platforms, Web3 & Crypto applications. 💼 My clients: Toyota, DJI, Tesla, Johnson & Johnson, Helly Hansen, Siemens, Nikon, (Inditex S.A.-Zara, Massimo Dutti, Bershka, Oysho, Pull & Bear, Stradivarius) 💥 I have experience in creating UI/UX Design for industries: - AI & Machine Learning (AI-powered SaaS, automation tools, AI-driven analytics, chatbots, LLM interfaces) - Crypto & Web3 (DeFi platforms, NFT marketplaces, blockchain dashboards, crypto wallets, tokenized ecosystems) - Conversational AI (AI voice agents, automated customer service, AI-driven call management) - MedTech (healthcare, Aged Care, Elderly care, dental & hospital management web app) - EdTech (online learning platforms, online course, education, teaching) - Big Data (data & analytics products, database, data visualization, data science) - FinTech (internet banking) - Real Estate (transfer application, investment startup) - Online stock brokers and trading platforms - Online bookmakers (betting sites) - NFT marketplace - Edge extensions - Dashboard UX/UI design - SaaS platforms UI/UX - Platforms for b2b and b2c segments - Mobile app design (ios,android) - CRM, ERP, PMS, ISO - Design for desktop applications on MAC OS and Windows (native app) ⚡️ What exactly do I deliver? - Research (cjm, jtbd, interview) - User Flows - Wireframe (low level & high level) - Prototyping - UX Design - UI Design - Usability Testing - Style Guide & UI Library design - Desktop and Mobile design ✅ 3 successful contracts with Upwork Enterprise Client ✅ Expert-Vetted (verified top 1% designer on the upwork) ✅ 92% Long-term clients ✅ 1800+ hours spent on design in the 2023 ⭐️ 5 REASONS WHY YOU SHOULD HIRE ME: 1️⃣ Every day in touch without delays. I provide daily progress reports via Upwork messenger or Slack. Always meet deadlines. 2️⃣ Track my working hours using Toptal Tracker(include desktop screenshots). Deliver a monthly PDF report of working hours. 3️⃣ Always on time for meetings! 4️⃣ I'm a perfectionist when it comes to project organization and structure in Figma. Every team member understands where each frame belongs and the status of screens. I always consider the needs of developers 😉. 5️⃣ Available for communication even after the project's expiration date and ready to help. Tools: Figma, Miro, Hotjar, FullStory, Google Analytics, UserTesting, Lookback, Loop11. UI Component Libraries: Material UI (MUI), Ant Design (AntD), React Bootstrap, Element UI, Tailwind UI. Frameworks: React, Angular, Vue.js, jQuery. Task Managers: Jira, Asana, Notion, Trello, Teamwork, Monday, Hubstaff. Communication: Slасk, Zoom, Google Meet. 📆 Availability: - I am available online from 9am to 8pm Central European Time (Barcelona 🇪🇸) - I work 5 days a week from Monday to Friday. 6-8 working hours a day. 30-40 working hours per week. I'd be happy to make a call with you to find out more details about your project. ⚠️ Just сontact me here right now and I will answer you within 5-15 minutes. Thank you! Updated: 4 Feb 2025 🔑𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒 (SЕ0): As an accomplished UI/UX Designer with a focus on web applications, my Upwork profile highlights extensive experience in designing intuitive and effective SaaS, CRM, and ERP systems. My expertise in UI Design and UX Design is geared towards creating user-centric interfaces for complex web platforms. In my role as a Head of Design, I've led numerous projects in User Interface Design, specializing in responsive web design and wireframing for web applications. My proficiency in Material Design and website wireframing is evident in my ability to craft interfaces that are not only visually appealing but also highly functional for complex systems. I have a rich background in User Experience Design, particularly in designing for web platforms and eCommerce. This involves a deep understanding of user needs and behaviors, which I incorporate into every aspect of the design process, from initial wireframes to the final design. As a seasoned professional in Graphics & UI Design, I am adept at using tools like Figma or Sketch for creating high-quality, responsive designs. My experience extends to website prototyping, ensuring that every design element aligns with the overarching goals of the web application. My expertise also lies in Design Thinking and A/B Testing, crucial for developing effective web-based solutions. As a creative problem-solver, I excel in finding innovative solutions to enhance user engagement and conversion rates, particularly for web and SaaS applications. In my career, I have consistently focused on delivering user-friendly and efficient designs, with a particular emphasis on web & mobile design for enterprise-level applications. My work in UI/UX Design and Visual Design demonstrates a keen eye for detail and a commitment to creating functional, aesthetically pleasing web applications.

Web Application
Web & Mobile Design Consultation
Graphic Design Software
SaaS
Cryptocurrency
Product Design
App Design
User Interface Design
Web Design
Software Design
UX & UI
UI/UX Prototyping
Figma
Wireframing
User Experience Design
$60 hourly
Dmitrii S.
- 5.0/5
- (21 jobs)
👋 Looking for a developer who blends cutting-edge AI with world-class web expertise? With 20+ years in the industry, I help startups and enterprises build scalable, modern, and data-driven web solutions using the latest AI tools and frameworks. ✨ What I Offer: 🔹 AI-Driven Development: Integrating AI and automation into web apps for smarter workflows, predictive analytics, and user personalization. 🔹 Architecture & Team Leadership: Proven track record in designing robust, scalable architectures and leading dev teams to deliver enterprise-grade products. 🔹 Front-End Excellence: Angular, React, JavaScript/TypeScript, RxJS, NgRx, SPA development, pixel-perfect UI/UX. 🔹 Back-End Mastery: Node.js, .NET Core, ASP.NET MVC (C#), REST APIs, microservices, high-load apps. 🔹 Database Solutions: PostgreSQL, SQL Server, MySQL, MongoDB, Firebase – performance tuning, migrations, and real-time data. - DevOps & Cloud: Azure deployments, CI/CD, automation, infrastructure as code. 🚀 Key Technologies: 🔹 Front-End: Angular, React, JavaScript, TypeScript, RxJS, NgRx, unit testing 🔹 Back-End: Node.js, .NET Core, ASP.NET MVC (C#), REST APIs 🔹 Databases: SQL Server, PostgreSQL, MySQL, MongoDB, Firebase 🔹 Other: AI integration, Chrome Extensions, Slack API, Azure, AWS 🦾 Why Work With Me? ✔️ Deep expertise in both AI and web development: I build apps that don’t just work—they think. ✔️ Fast, clear communication and professional project management. ✔️ 100% focus on business outcomes, code quality, and scalability. Let’s discuss how I can help your project succeed with advanced web and AI solutions!

Web Application
OpenAI API
React
.NET Core
.NET Framework
MongoDB
Node.js
Azure DevOps
Microsoft Azure
Database Design
Web Development
RxJS
TypeScript
Angular
AngularJS
$40 hourly
Huzaifa S.
- 5.0/5
- (2 jobs)
👋 Hey! I’m Huzaifa, a full-stack product engineer with 6+ years of experience building scalable MVPs, custom web apps, and AI-powered automations that help startups launch fast and grow faster. 🚀 Whether you need to: • Launch your MVP to secure funding • Build a booking platform, dashboard, or e-commerce feature • Automate your business with AI (chatbots, agents, workflows) I bring a mix of product strategy, full-stack development, and execution speed to turn your idea into a working product — with clean code and a clear UX. 💼 What I’ve Delivered: 🏛 GovTech: Online fishing license portal for the Government of Gibraltar (+40% engagement) 🛍 E-Commerce: Real-time price comparison engine for a sneaker brand (+25% conversions) 🎙 Booking System: Music studio app with automated access control (+30% bookings) 💬 AI: Custom GPT chatbot for client FAQs and appointment booking 🧠 Tools & Stack: • Frontend: React, Vue, Tailwind, Next.js • Backend: Node.js, Supabase, Firebase • AI & Automation: GPT-4, OpenAI, Dialogflow, Zapier, Make, Twilio If you're looking for a reliable technical partner who can think beyond code and help you build, validate, and launch — let’s talk. 📅 Ready to get started? Click Invite to Job and let’s build something amazing.

Web Application
Website
Web Design
Progressive Web App
TypeScript
MongoDB
Vue.js
Mobile App
React Native
PostgreSQL
Ecommerce Website
Web Development
HTML5
JavaScript
C++
Node.js
React
Python
Responsive Design
$27 hourly
Daymit C.
- 5.0/5
- (9 jobs)
I believe Elementor is a powerful tool for web development, however most developers use too many add-ons, plugins and extra widgets in order to implement a giving design, however this might decrease site performance significantly. In the other hand, just using Elementor + HTML (if needed) + CSS (if needed), I can implement the 99% of the designs, with a clean and solid base. Besides this, responsive and SEO friendly content is always a must that I provide to my work as an added value.

Web Application
Elementor
WordPress
CSS 3
webpack
HTML
Tailwind CSS
Front-End Development
Sass
$60 hourly
Antonio S.
- 0.0/5
- (0 jobs)
I'm a Senior Java Backend Engineer and Cloud Architect with +25 years of experience developing scalable, high-performance systems. As CTO and co-founder of BrioAgro, I’ve led the creation of cloud-native platforms using Java, Spring Boot, and technologies deployed on Google Cloud Platform (GCP) and AWS. - Designing and building robust backend systems for web and IoT applications - Architecting scalable cloud infrastructures using Docker, Kubernetes, and serverless platforms - Implementing Artificial Intelligence to optimize workflows and decision-making in companies - Creating intelligent chatbots for customer service and internal process automation - Leading the development of mobile apps integrated with cloud services and real-time data I have also worked in multicultural teams, including a recent position in Dublin at a multinational company, where I improved my English fluency and contributed to enterprise-scale software development. If you’re looking for someone who blends deep technical expertise with practical AI and cloud solutions, I’d be glad to help.

Web Application
Mobile App
Artificial Intelligence
Product Development
App Development
AI Chatbot
AI Bot
AI App Development
Database Design
Cloud Engineering
Back-End Development
Java
$35 hourly
Carmen G.
- 0.0/5
- (0 jobs)
I’m a developer specialized in building full-featured web platforms using React and Next.js. Whether you’re looking to launch a product, scale your tech infrastructure, or bring a custom web application to life, I can help. • Experienced with React.js, Next.js, Node.js, and full-stack JavaScript development • Built complete, scalable platforms from scratch for startups • Strong background in product strategy and technical leadership (ex-CTO at multiple companies) • Fluent in English and Spanish • Clear and consistent communication — I believe it’s key to a successful project Let’s bring your idea to life, together.

Web Application
Product Management
Product Backlog
Artificial Intelligence
Amazon Web Services
MongoDB
ChatGPT
OpenAI API
Node.js
JavaScript
React
Next.js
Scrum
Product Development
Web Development
$20 hourly
Diego C.
- 4.9/5
- (4 jobs)
Hello 👋 I’m UI/UX Designer from Spain 🇪🇸, I really enjoy my design process and I would like to share it with you helping your business with my creative ideas to provide you with beautiful and functional products with the help of Webflow. If you need stunning and usable mobile app, website, web app, landing page SaaS, email newsletter or dashboard feel free to contact me 💬 I speak fluently 🇪🇸 🇩🇪 🇬🇧 ✅ E-commerce ✅ SaaS Platform ✅ Landing Pages ✅ Websites ✅ E-commerce My tools are: 🛠️ Figma 🛠️ Adobe XD 🛠️ Trello 🛠️ Webflow 🛠️ Google Meet My skills are: -Visual Design -Prototyping -Wireframing -Interaction Design -UX Research -Good communication -Webflow Development 📩 I’m looking forward to knowing more about your projects.

Web Application
Dashboard
SaaS
Website
Landing Page
Wireframing
UI/UX Prototyping
Web Design
Mobile UI Design
Mobile App Design
User Interface Design
Figma
Interaction Design
$100 hourly
Guilherme M.
- 0.0/5
- (2 jobs)
Hi, I’m Guilherme Meira, a No-Code & AI Developer with 6+ years of experience helping startups and businesses build and scale their products. I specialize in Bubble.io, Supabase, Xano, Flutterflow, Retool, and AI-driven app development. Whether you're a startup founder or an established business, I help you turn ideas into scalable software—fast. What I Do: ✅ Build Custom Apps & SaaS – I create powerful, scalable, and efficient applications using no-code and AI tools like Bubble.io, Flutterflow, and Supabase. ✅ API Integrations & Automations – I integrate third-party services like Stripe, Twilio, SendGrid, Google Drive, QuickBooks, OpenAI, Slack, Zapier, and more to enhance your product’s functionality. ✅ AI-Powered Development – I use tools like Lovable.ai, OpenAI, and v0 to build intelligent, automated, and efficient applications. ✅ Tech Stack Migration & Optimization – I help businesses reduce software costs by replacing expensive SaaS tools like ClickUp, Notion, and HubSpot with custom-built solutions. ✅ MVP Development & Scaling – I’ve helped companies go from zero to thousands of users, guiding them through the entire product lifecycle. ✅ Bubble.io Plugin Development – I build custom plugins to extend Bubble’s capabilities, such as PDF merging and optimized UI rendering. Why Work With Me? 💡 Business & Product Mindset – I don’t just build software—I help you grow your business with a strategic approach. 🚀 Speed & Efficiency – With my expertise in no-code, AI, and automation, I deliver results faster and more cost-effectively than traditional development. 📈 Proven Track Record – I’ve successfully built and scaled products across multiple industries, from CRMs to ERPs to AI-powered platforms. 💼 Entrepreneurial Experience – I’ve run my own software agency (TechMakers.dev) and built SaaS projects, so I understand the challenges of launching and scaling a business. Let’s Build Something Great Need a custom app, AI-powered solution, or automation for your business? Let’s chat! 🚀

Web Application
Product Design
Web Development
App Development
UX & UI
Product Development
API
API Integration
No-Code Development
Web Design
Bubble.io
$5 hourly
Ilyas E.
- 5.0/5
- (24 jobs)
Hi, I am a freelancer I have good skills with the computer, data entry, social networks and languages. I take work seriusly. If there is I short work I completed in the same day if you want. Feel free to contant with me, without any compromise. Thank you :).

Web Application
Mobile Device
Computer Basics
Smartphone
Social Network Administration
Excel Formula
Photo Editing
Microsoft Word
Google Docs
Microsoft PowerPoint
Adobe Photoshop
$12 hourly
Jose G.
- 5.0/5
- (4 jobs)
WordPress and SEO Expert Services. Looking to elevate your online presence? Let me help you out! I offer a full range of specialized services in WordPress and SEO designed to drive the success of your website. Custom Design and Development in WordPress: Transform your vision into reality with a professional, fully customized WordPress website. From initial setup to implementing advanced functionalities, I'll be with you every step of the way. Comprehensive Search Engine Optimization (SEO): Boost your online visibility and reach a wider audience with powerful SEO strategies. From keyword research to on-page and off-page optimization, I'll help you achieve your ranking goals. Keyword Research and Content Strategy: Discover the keywords that will drive quality traffic to your site and create relevant, SEO-optimized content that engages your target audience and improves your search engine rankings. Continuous Analysis and Monitoring: Keep a constant pulse on your website's performance with detailed analysis and ongoing monitoring. Using the latest tools and analytics techniques, I'll identify improvement opportunities and adjust strategies for optimal results. Technical Issue Resolution and Maintenance: Experiencing technical issues hindering your site's performance? Don't worry, I'm here to help. From troubleshooting crawl errors to optimizing loading speed, I'll ensure your site is running smoothly. Stay Ahead with the Latest Trends: Search engine algorithms are constantly evolving, and it's crucial to stay up-to-date with the latest trends and changes. As your WordPress and SEO partner, I'll keep you informed about the latest updates and adapt our strategies accordingly. Ready to take your website to the next level? Contact me today and let's start working together towards online success!

Web Application
On-Page SEO
Yoast SEO
SEO Setup & Configuration
SEO Strategy
SEO Plugin
SEO Audit
Web Design
Web Page
WordPress Theme
WordPress Plugin
WordPress
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