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$40/hr
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Job Success
$10K+ earned
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I am a Front-End Developer (React / Next.js) with 6+ years of experience building scalable, high-performing, and maintainable web applications for companies worldwide.
⭐️⭐️⭐️⭐️⭐️
"The final product exceeded our expectations. The app is fast, responsive, and scalable. Polina responded quickly to feedback, implemented changes seamlessly, and ensured the codebase was clean and maintainable."
🎯 What I deliver as a React / Next.js Developer:
✔️ 6+ years of commercial experience across web, mobile, and enterprise applications
✔️ Expert in building high-performing, scalable, and maintainable front-end solutions using React, Next.js, and TypeScript
✔️ Full-stack development experience with Node.js, Express, Nest.js, PHP, Laravel, Symfony, and the MERN stack (MongoDB, Express, React, Node)
✔️ Extensive experience with databases including PostgreSQL, MySQL, MongoDB, and Redis, and working with GraphQL and REST APIs
✔️ Strong proficiency in front-end technologies: HTML5, CSS3, SASS, Tailwind CSS, Bootstrap, and responsive mobile-first design
✔️ Integration with third-party APIs and tools including Stripe, PayPal, Twilio, HubSpot, Odoo, Salesforce, and Google APIs
✔️ Expertise in building SaaS platforms, dashboards, landing pages, e-commerce websites, and AI-powered applications using React / Next.js
✔️ DevOps and infrastructure skills including AWS (Lambda, S3, Connect), CI/CD pipelines, Docker, Kubernetes, Cloudflare, DigitalOcean, and Linux-based server management
✔️ Hands-on experience with performance optimization, SEO-friendly architecture, accessibility, and security best practices
✔️ Building reusable React components, UI libraries, and scalable Next.js architecture to accelerate development and maintain consistency across large projects
✔️ Collaboration with designers, product managers, and QA teams to deliver functional, visually stunning, and production-ready React / Next.js applications
📊 Key Achievements in Numbers:
🔶 SaaS Dashboard for Logistics Company:
▪ Reduced page load times by 45% and optimized React components
▪ Improved dashboard usability, increasing adoption rates by 60%
▪ Streamlined workflows and automated reports, saving 30% of operational time
🔶 E-Commerce Store (Shopify + Next.js Front-End):
▪ Increased site speed by 3x, reducing bounce rates
▪ Optimized SEO and structured data for product pages
▪ Integrated payment gateways and custom API solutions for a seamless checkout
🔶 AI-Powered Application:
▪ Developed LLM-powered features in Next.js that reduced processing time by 35%
▪ Built scalable serverless architecture for heavy computational tasks
▪ Delivered real-time data visualization dashboards with React
🔶 Enterprise ERP / CRM Platform:
▪ Designed and implemented a full-stack React / Next.js solution with PostgreSQL
▪ Reduced operational costs by 38% through automation and optimized workflows
▪ Ensured cross-team collaboration and maintainable codebase for long-term scalability
💡 Why hire me?
▪ 6+ years in web development, React, Next.js, and full-stack applications
▪ 135+ projects delivered successfully for startups, e-commerce, SaaS, AI, fintech, and corporate clients
▪ Proven track record of delivering enterprise-grade solutions with startup speed
▪ Expertise in API integrations, third-party services, and custom backend solutions
▪ Strong collaboration with designers and product managers for pixel-perfect React / Next.js implementation
▪ Focus on performance, scalability, security, and maintainability
▪ Experienced with modern DevOps, CI/CD pipelines, and cloud infrastructure
▪ Skilled in responsive, mobile-first design and creating optimized user experiences
▪ Knowledge of SEO-friendly React / Next.js architecture, accessibility, and micro-interactions
▪ Ability to turn complex requirements into clean, maintainable, and scalable code
🚀 If you’re looking for a React / Next.js Developer who combines technical expertise, speed, and business-driven results - and can build production-ready, scalable web applications - let’s collaborate. I can help turn your ideas into performant, maintainable, and visually appealing React / Next.js applications that scale with your business.
Last Update: 24.11.2025
Polina I.
has worked
.
Associated with
Mettevo Digital Agency
$1M+
earned
$45/hr
100%
Job Success
$100K+ earned
Available now
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⚡ Top Rated Plus React Developer | 13+ Years of Experience | 𝐀𝐈-𝐃𝐫𝐢𝐯𝐞𝐧 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 & Full Stack Engineer
⚡ 𝐌𝐨𝐝𝐞𝐫𝐧 𝐀𝐈 𝐒𝐭𝐚𝐜𝐤: 𝐂𝐮𝐫𝐬𝐨𝐫, 𝐋𝐨𝐯𝐚𝐛𝐥𝐞, 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞, 𝐆𝐢𝐭𝐇𝐮𝐛 𝐂𝐨𝐩𝐢𝐥𝐨𝐭, 𝐆𝐏𝐓-𝟒/𝐆𝐏𝐓-𝟒𝐨, 𝐂𝐥𝐚𝐮𝐝𝐞 𝐒𝐨𝐧𝐧𝐞𝐭/𝐎𝐩𝐮𝐬
⚡ 𝐀𝐈-𝐀𝐬𝐬𝐢𝐬𝐭𝐞𝐝 Debugging, Refactoring, UI Optimization & Frontend Automation
🙋♂️ Click Hire or Invite Full Stack React Developer | React Native Developer | 𝐀𝐈 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭
💻 WHAT YOU GET
Full Stack Node.js React Developer - 13+ years of engineering scalable SaaS platforms, dashboards, and heavy cloud-connected architectures.
React Developer with experience in Next.js - fast SSR/SSG implementation, SEO-optimized web setups, and advanced React Animation workflows.
React Native Developer - high-performance Hybrid App Development for iOS, Android, and Smartphone ecosystems.
📊 ACHIEVEMENTS IN NUMBERS (BUSINESS IMPACT)
13+ years, 25,000+ hours, 100+ digital products delivered as a Senior React Developer, ReactJS Developer, and Front-End Developer.
Full Stack Developer React Node for an Enterprise SaaS & React Dashboard:
Boosted data rendering and page load speed by 210% using advanced caching, Next.js, and state management (Redux).
Reduced server infrastructure costs by 40% by optimizing Node.js API backend architecture and MongoDB query aggregation.
React Developer Firebase Specialist for an AI-powered MVP:
Accelerated time-to-market by 6 weeks utilizing AI App Development workflows and serverless Firebase integrations.
Increased user activation rates by 35% by implementing pixel-perfect Web Design and interactive micro-interactions with smooth React Animation.
React Native & Hybrid App Development for a FinTech Smartphone App:
Designed and launched a cross-platform iOS & Android application from a single codebase, saving the client 45% in budget.
Boosted mobile conversion rates by 25% using deep Responsive Design practices for all Smartphone form factors.
🎯 WHERE I DELIVER (EXPERTISE)
As a React Developer & Front-End Developer: I build fluid, scalable user interfaces from scratch using JavaScript, TypeScript, HTML5, and CSS / Bootstrap, ensuring a premium feel.
As a Next.js & React Dashboard Architect: I implement secure admin panels, real-time analytics hubs, complex data visualizations, and modern server-side architectures.
As a Full Stack Node.js React Expert: End-to-end product engineering from building custom backend APIs with Node.js and Python, to structuring stable database layers via MongoDB and SQL.
As a React Native Developer: High-fidelity Hybrid App Development, native device feature integration (biometrics, camera, background tasks) for iOS and Android Smartphone devices.
As a React Designer: Bridging the gap between UI/UX and code, ensuring that layouts respect the developer-ready guidelines and maintain a conversion-focused approach.
🛠 HOW I BUILD (TECH SKILLS)
Core Frontend: React, React.js, Next.js, JavaScript, TypeScript, HTML5, CSS, Bootstrap, Tailwind CSS.
State & Data Architecture: Redux, Redux Toolkit, Zustand, React Query, Apollo GraphQL.
Backend & API Systems: Node.js, Python, MongoDB, Firebase, REST API, GraphQL.
Mobile & Hybrid Platforms: React Native, Hybrid App Development, Smartphone apps, iOS, Android integrations.
Advanced Mechanics: React Animation (Framer Motion), React Dashboard UI, Responsive Design, Web Design, Web Performance Engineering.
🤖 AI-DRIVEN DEVELOPMENT WORKFLOW
As an AI-Driven Frontend & Full Stack Engineer, I actively combine 13+ years of core engineering logic with cutting-edge AI-native tools (Cursor, Claude Code, GitHub Copilot, OpenAI GPT-4o, Claude Sonnet) to:
Accelerate Delivery: Speed up repetitive front-end development by 30-40%, getting your MVP to launch faster.
Enhance Code Quality: Automated AI-assisted code reviews, bulletproof refactoring, and AI-enhanced CI/CD pipelines.
AI App Development: Smooth integration of third-party AI models (LLMs, vectors, embeddings) directly into your React or mobile interface.
⚡ SERVICES I OFFER
Full-scale React MVP Development & Next.js SaaS setups
Full Stack React & Node.js application scaling
React Native mobile app interfaces & Hybrid App Development
Highly interactive React Dashboard & Admin Panel systems
Native API integrations & multi-tenant cloud architectures
Looking for a world-class Full Stack Node.js React Developer | React Native Developer | Next.js Specialist who understands how to transform engineering code into real business growth?
Let’s connect!
Send me a message detailing your product goals, and let's craft a solid plan for your sprint. 🚀
Denys B.
has worked
.
Associated with
Onix-Systems, LLC
$30M+
earned
$35/hr
100%
Job Success
Available now
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I’m a Senior Web & Hybrid Mobile App Engineer with 10+ years of experience building scalable, high-performance applications using React.js, Next.js, and React Native.
I’ve worked on products used by millions of users, including apps like StepSetGo (10M+ users), and enterprise platforms across SaaS, fintech, health, and booking domains.
🚀 What I can help you with:
Build scalable SaaS platforms (frontend + backend integration)
Develop high-performance React / Next.js applications (SSR, SSG, ISR)
Create cross-platform mobile apps (React Native – iOS & Android)
Convert Figma designs into pixel-perfect, responsive UI
Optimize apps for performance, SEO, and accessibility (WCAG)
Implement clean architecture, reusable components & scalable state management (Redux, Zustand)
💡 Why clients hire me:
Proven scale → Built apps used by millions of users
Ownership mindset → I don’t just code, I think like a product owner
Performance-focused → Faster apps = better user retention
Clean, maintainable code → Easy to scale long-term
Strong communication → Smooth collaboration across time zones
🧠 My expertise includes:
React.js, Next.js, TypeScript
React Native (Expo, CLI)
REST APIs, GraphQL
State Management: Redux, Context API, Zustand
Testing: Jest, Cypress, Detox
CI/CD, GitHub Actions
Real-time features, performance optimization
📈 Recent Impact:
🚀 Built and scaled apps with 10M+ users
⚡ Improved performance and reduced load time significantly across projects
🧩 Delivered complex features like RBAC systems, real-time updates, and scalable UI architecture
📱 Published multiple production-grade mobile apps on iOS & Android
🤝 Let’s work together if you:
Need a reliable senior developer (not just a coder)
Are you building a serious product (startup or scale-up)
Want long-term collaboration with ownership and accountability
I’m available for long-term projects and can start immediately.
Let’s discuss how I can help you build a fast, scalable, and user-friendly product 🚀
Jay P.
has worked
.
$40/hr
100%
Job Success
$80K+ earned
Available now
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Hi! 🖐
Looking for a skilled MERN stack developer for your web development project? Look no further! The DevIT team is here to take all your tasks and deliver a perfect result! 💪
Our experienced developers are proficient in React.js, Node.js, MongoDB, and Express.js. We've built websites with dashboards of different kinds, web apps, and websites with OpenAI integration - there are no impossible tasks!
With a focus on high-quality code, user-friendly interfaces, and responsive designs, our developers are committed to delivering projects that exceed expectations.
We’ve had the chance to work with clients from across the world, and we guarantee meeting timelines and maintaining communication, irrespective of time zones. The majority of our clients return to us with new projects, and this is the best recommendation 💯
Whatever task you have, you can be sure - we will deliver a perfect solution! Contact us today to learn how we can help bring your web development project to life!
Our main skills, including but not limited to:
✅ Front-end: Redux, Redux-thunk, Axios, Axios Retry, js-queue, Lodash.js, Redux-Form, Reselect, Angular 2+, TypeScript, jQuery, Bootstrap, SASS/LESS, CSS3, HTML5, Webpack.
✅ Back-end: Node.js
✅ JavaScript: React.js, Node.js, Next.js, Vue.js, Angular.js, React Native
✅ Server-side: Amazon AWS, Microsoft Azure, Google App Engine, Nginx, Docker
✅ Databases: MongoDB, PostgreSQL, MySQL, Redis, Oracle DB, HBase, Microsoft SQL Server, Sybase.
✅ DevOps: Docker, Kubernetes, Ansible, Bash, AWS (Lambda, DynamoDB, API Gateway, S3, etc.), GitLab
✅ API - Google, Facebook, Stripe, PayPal, Different lead API, Twilio API, Cognito, AWS, REST.API, GraphQL, etc.
✅ Payment Gateways - PayPal, Google Checkout, Stripe, Adyen, Sofort, Custom payment gateways, etc.
Last updated 7th July 2026
Keywords: MERN Stack, React.js, Node.js, Express.js, MongoDB, Next.js, Redux/Zustand/Context API, RESTful APIs, GraphQL, JavaScript (ES6+), TypeScript, Full Stack Web Development, API Integration, Microservices Architecture, Server-Side Rendering (SSR), Single Page Applications (SPA), Component-Based Architecture, WebSocket/Real-Time Apps, Authentication & Authorization (JWT, OAuth), MVC Architecture, Responsive Design, Tailwind CSS/Material UI/Bootstrap, UI/UX Optimization, Performance Optimization, Lighthouse/Core Web Vitals, Cross-Browser Compatibility, Git/GitHub/GitLab, Docker, AWS/DigitalOcean/Vercel, CI/CD, Agile/Scrum, Jira/Trello/ClickUp, SaaS Platform Development, Dashboard/Admin Panel, E-commerce Platform, Marketplace Development, CRM/ERP System, Healthcare/Fintech Apps, Real-time Chat Application, Social Network App, Booking/Scheduling Platform
Associated with
DevIT
$6M+
earned
$30/hr
100%
Job Success
$70K+ earned
Available now
Offers consultations
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I am a Full Stack AI Developer with 7+ years of experience helping clients build and improve products using React.js, React Native, Node.js, and AI. I focus on solving real problems making apps faster, easier to use, and more efficient.
I have worked with startups and businesses to turn ideas into working products and improve existing systems. Using React.js for web apps, React Native for mobile apps, and Node.js for backend development, I build complete solutions and integrate AI where it adds real value.
How I have Helped Clients
Built a React.js and Node.js platform with AI automation that reduced manual work
Improved a React Native app’s performance and stability for better user experience
Developed full-stack systems using React.js, React Native, and Node.js that scaled with growing users
Integrated AI chat and automation into React.js and Node.js apps to improve response time
Fixed and optimized React.js and React Native apps, improving speed and usability
Skills & Expertise
Full Stack Development (React.js, React Native, Node.js)
Building complete systems with React.js frontend, React Native mobile apps, and Node.js backend.
React.js
Creating fast, responsive web apps and dashboards using React.js with clean UI.
React Native
Developing smooth mobile apps using React Native for both iOS and Android.
Node.js
Building scalable APIs and backend services using Node.js and Express.
AI & Automation
Adding AI features like chatbots, analytics, and automation to React.js and Node.js applications.
Services
React.js web development and optimization
React Native mobile app development
Node.js backend and API development
AI integration into web and mobile apps
Improving and scaling React.js, React Native, and Node.js applications
Tech Stack
React.js, React Native, Node.js, TypeScript, Tailwind, MongoDB, PostgreSQL, APIs, AI integrations
I focus on building clean and reliable systems using React.js, React Native, Node.js, and AI. I keep communication clear and make sure the product works well in real-world use.
If you need a Full Stack Developer with experience in React.js, React Native, Node.js, and AI, I’m ready to help.
Sarmad A.
has worked
.
$10/hr
94%
Job Success
$10K+ earned
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Hey there, I am Vikas Bansal.
I am a FULL-STACK PHP, LARAVEL, MERN, MEAN, SaaS Developer with 10+ years of hands-on experience building fast, secure, and scalable web applications. I have worked with startups, founders, and growing businesses to turn real ideas into real, working products.
I help teams build MVPs, SaaS platforms, dashboards, admin panels, and custom web apps. Whether it’s a fresh build or improving an existing system, I focus on clean code, strong performance, and long-term stability.
I handle both frontend and backend, so you don’t need to juggle multiple developers. I take care of the full process - from planning and development to testing and deployment.
Client feed back / review:
⭐ ⭐ ⭐ ⭐ ⭐
"𝑾𝒐𝒓𝒌𝒊𝒏𝒈 𝒘𝒊𝒕𝒉 𝒕𝒉𝒊𝒔 𝒘𝒆𝒃 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 𝒘𝒂𝒔 𝒂 𝒈𝒓𝒆𝒂𝒕 𝒆𝒙𝒑𝒆𝒓𝒊𝒆𝒏𝒄𝒆. 𝑻𝒉𝒆𝒚 𝒘𝒐𝒓𝒌𝒆𝒅 𝒉𝒂𝒓𝒅 𝒂𝒏𝒅 𝒘𝒆𝒍𝒍 𝒖𝒏𝒅𝒆𝒓 𝒅𝒊𝒇𝒇𝒊𝒄𝒖𝒍𝒕 𝒄𝒊𝒓𝒄𝒖𝒎𝒔𝒕𝒂𝒏𝒄𝒆𝒔. 𝑰𝒇 𝒚𝒐𝒖𝒓 𝒍𝒐𝒐𝒌𝒊𝒏𝒈 𝒇𝒐𝒓 𝒂 𝒈𝒓𝒆𝒂𝒕 𝒘𝒆𝒃 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝒕𝒆𝒂𝒎, 𝒕𝒉𝒊𝒔 𝒕𝒆𝒂𝒎 𝒊𝒔 𝒑𝒍𝒂𝒄𝒆 𝒕𝒐 𝒈𝒐."
⭐ ⭐ ⭐ ⭐ ⭐
"𝑱𝒐𝒃 𝑾𝒆𝒍𝒍 𝑫𝒐𝒏𝒆! 𝑾𝒆 𝒍𝒐𝒐𝒌 𝒇𝒐𝒓𝒘𝒂𝒓𝒅 𝒕𝒐 𝒕𝒉𝒆 𝒏𝒆𝒙𝒕 𝒐𝒑𝒑𝒐𝒓𝒕𝒖𝒏𝒊𝒕𝒚 𝒕𝒐 𝒘𝒐𝒓𝒌 𝒕𝒐𝒈𝒆𝒕𝒉𝒆𝒓!"
⭐ ⭐ ⭐ ⭐ ⭐
"𝑯𝒖𝒈𝒆𝒍𝒚 𝒕𝒂𝒍𝒆𝒏𝒕𝒆𝒅 𝒂𝒏𝒅 𝒆𝒙𝒕𝒓𝒆𝒎𝒆𝒍𝒚 𝒑𝒓𝒐𝒇𝒆𝒔𝒔𝒊𝒐𝒏𝒂𝒍. 𝑰'𝒅 𝒓𝒆𝒄𝒐𝒎𝒎𝒆𝒏𝒅 𝒕𝒐 𝒆𝒗𝒆𝒓𝒚𝒃𝒐𝒅𝒚 𝒇𝒐𝒓 𝒂𝒏𝒚 𝒑𝒓𝒐𝒋𝒆𝒄𝒕. 𝑻𝒉𝒆 𝒔𝒌𝒊𝒍𝒍 𝒍𝒆𝒗𝒆𝒍 𝒂𝒏𝒅 𝒂𝒅𝒉𝒆𝒓𝒆𝒏𝒄𝒆 𝒕𝒐 𝒐𝒖𝒓 𝒕𝒊𝒎𝒆𝒍𝒊𝒏𝒆𝒔 𝒘𝒂𝒔 𝒇𝒂𝒏𝒕𝒂𝒔𝒕𝒊𝒄."
What I work with regularly:
• PHP & Laravel.
• React.js / Next.js.
• Node.js & Express.
• MongoDB, MySQL, PostgreSQL.
• Supabase & Firebase.
• REST APIs & third-party integrations.
• Secure authentication (JWT, role-based access).
• Payment gateway integrations.
• Modern JavaScript (ES6+).
• Tailwind CSS, Bootstrap, Material UI.
• State management (Redux, Context API).
• Real-time apps (WebSockets, Socket io).
• File uploads, media handling.
• E-mail services and notification systems.
Deployment & workflow:
• Cloud deployments.
• CI/CD pipelines.
• Docker (basic to intermediate).
• Performance optimization and server tuning.
• Git-based workflows.
Why Clients Love Working With Me:
✅ I listen first, then build custom solutions tailored to your business.
✅ I deliver on time, with no excuses.
✅ I focus on ROI, not just technical setup - your system should make money, not just run.
I don’t just build features - I think about users, security, business goals, and future growth. I give honest advice, suggest better solutions when needed, and help avoid problems early.
I communicate clearly, share regular updates, and respect deadlines. I take pride in delivering work that’s stable, clean, and easy to maintain.
If you’re looking for a developer who values quality, clarity, and long-term results, I’d be happy to work with you.
How about a virtual cup of coffee? It’s on me ☕🙂
------------------Keywords----------------
PHP | Laravel | Livewire | Filament | React.js Developer | Next.js Developer | Node.js Developer | PHP Developer | Laravel Developer | TypeScript Developer | JavaScript Expert | Tailwind CSS | API Integration | REST API | GraphQL | Web App Development | SaaS Development | Dashboard Development | Admin Panel Development | Payment Integration | AI Integration | Automation Development | Workflow Automation | Full Stack Developer | Frontend Developer | Backend Developer | WordPress Development | WooCommerce Development | Shopify Development | Mobile App Integration | Cloud Deployment | Database Design | MongoDB | MySQL | PostgreSQL | CI/CD | DevOps Basics | AI
Vikas B.
has worked
.
Associated with
A1 Professionals Inc.
$2M+
earned
$16/hr
100%
Job Success
$90K+ earned
Start of list.
End of list.
As a highly skilled front-end developer with expertise in modern JavaScript frameworks, I specialize in building responsive, fast, and scalable web and mobile applications using React.js, Next.js, SvelteKit, and React Native. With 10+ years of experience, I have delivered multiple successful projects, consistently improving user experience and performance through elegant code and innovative solutions. My technical proficiency, attention to detail, and collaborative approach ensure that I deliver top-quality results.
Whether you need a dynamic web app, a fast server-rendered site, or a cross-platform mobile solution, I have the skills to bring your project to life with cutting-edge technologies.
Skills and Expertise:
✿ React.js: Mastery in building interactive, component-based web applications with a focus on performance, reusability, and maintainability.
✿ Next.js: Experience creating optimized, server-side rendered (SSR) applications, static site generation (SSG), and delivering excellent SEO.
✿ SvelteKit: Ability to build fast, lightweight applications using this modern, highly performant framework, perfect for user-centric applications.
✿ React Native: Development of cross-platform mobile applications with native performance, ensuring a smooth user experience across iOS and Android devices.
✿ JavaScript (ES6+): Strong command over modern JavaScript, asynchronous operations, and modular code design.
✿ Responsive Design: Expertise in creating pixel-perfect, responsive layouts that look stunning on all devices, from mobile to desktop.
✿ API Integration: Experience integrating RESTful APIs, GraphQL, and third-party services to enhance application functionality.
✿ Version Control (Git): Skilled in maintaining clean and collaborative codebases, with best practices for version control and teamwork.
✿ Testing: Unit testing, end-to-end testing, and debugging to ensure flawless functionality and user satisfaction.
(buzzwords: ReactJs , NextJs, Tailwind , javascript, javascript developer, javascript development,react, react framework, react developer, next, UI/UX, jQuery, js developer, js development, web developer, web development, e-commerce, crm, lms, web design, website creation,react, bootstrap, html, css, frontend, frontend developer, restful, rest api)
#ReactJs #NextJs #FrontendDeveloper #reatjs #nextjs #reactjsdeveloper #nextjsdeveloper #webdeveloper
Vijay B.
has worked
.
$20/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
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I help startups, founders, and businesses build Next.js SaaS applications, Next.js marketplaces, Next.js dashboards, and Next.js AI-powered platforms using React.js, Node.js, Supabase, TypeScript, and PostgreSQL.
Over the last 6+ years, I've built production-ready Next.js applications, SaaS products, healthcare platforms, telemedicine systems, expert marketplaces, and real-time platforms that serve real users and businesses.
Today, modern product development is evolving rapidly with AI-assisted engineering. I combine Next.js development, AI-powered workflows, Claude Code, Cursor, GPT-4o, Gemini, v0, Bolt, and Lovable to help founders launch products faster while maintaining clean architecture and scalable systems.
Why Work With Me?
Unlike many developers who focus on a single area, I can take ownership of an entire Next.js product, from frontend development and backend architecture to deployment, scaling, AI integrations, and ongoing support.
My core expertise includes:
✅ Next.js Development
✅ Next.js SaaS Development
✅ Next.js Marketplace Development
✅ Next.js Dashboard Development
✅ Next.js AI Applications
✅ React.js Development
✅ Node.js Development
✅ Supabase Development
✅ PostgreSQL Development
✅ Stripe Integration
✅ OpenAI Integration
✅ Claude Integration
✅ AI Agent Development
✅ AWS Infrastructure
What I Build
Next.js SaaS Applications
Production-ready Next.js SaaS platforms with authentication, subscriptions, dashboards, billing, and admin panels using Next.js, Node.js, Supabase, PostgreSQL, and Stripe.
Next.js AI Applications
Modern Next.js AI applications powered by OpenAI, Claude, AI Agents, RAG systems, and custom AI workflows integrated directly into SaaS products.
Next.js Startup MVPs
Rapid development of Next.js MVPs that help startups validate ideas quickly while maintaining scalability for future growth.
Next.js Marketplaces
Scalable Next.js marketplaces, booking systems, expert platforms, and multi-vendor solutions built using Next.js, React.js, Node.js, and Supabase.
Next.js Dashboards & Admin Panels
Custom Next.js dashboards, CRM systems, ERP platforms, analytics tools, and internal business applications.
Next.js Healthcare Platforms
Secure Next.js healthcare applications, telemedicine platforms, scheduling systems, video consultation systems, and patient management solutions.
Next.js Technology Stack
Frontend
Next.js
React.js
TypeScript
JavaScript
Tailwind CSS
Shadcn UI
Material UI
Backend
Node.js
NestJS
Express.js
REST APIs
GraphQL
Database
Supabase
PostgreSQL
MongoDB
MySQL
Redis
AI Development
OpenAI
Claude
GPT-4o
Gemini
AI Agents
LangChain
RAG Applications
Cursor
Claude Code
v0
Bolt.new
Lovable
Cloud & DevOps
AWS
Docker
Vercel
CI/CD
Serverless
Keywords
Next.js Developer, Next.js Expert, Next.js SaaS Developer, Next.js AI Developer, Next.js Marketplace Developer, Next.js Dashboard Developer, React.js Developer, Node.js Developer, Supabase Developer, TypeScript Developer, SaaS Developer, AI SaaS Developer, OpenAI Developer, Claude Developer, Startup MVP Developer, Full-Stack Next.js Developer.
Harmish B.
has worked
.
$15/hr
99%
Job Success
$70K+ earned
Available now
Start of list.
End of list.
🏆 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐀𝐈 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | ⏱️ 𝟒𝟕𝟎𝟎+ 𝐇𝐨𝐮𝐫𝐬 𝐖𝐨𝐫𝐤𝐞𝐝 | 🚀 𝟖+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
💻 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐀𝐏𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐀𝐝𝐦𝐢𝐧 𝐏𝐚𝐧𝐞𝐥𝐬 | 𝐒𝐚𝐚𝐒 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 | 𝐀𝐈 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬
I'm a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 specializing in building complete web-based products from idea to production.
I help startups, founders, SaaS businesses, and enterprises build scalable applications that combine modern frontend experiences, robust backend systems, secure APIs, intelligent automation, and AI-powered features.
My focus isn't just writing code. I help businesses validate ideas, define technical architecture, integrate AI capabilities, automate workflows, improve user experience, and launch products faster.
Whether you need a startup MVP, SaaS platform, Progressive Web App (PWA), marketplace, CRM, ERP, dashboard, admin panel, customer portal, or AI-powered business solution, I can handle the entire development lifecycle.
✤ 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 :
✅ SaaS Platforms
✅ AI-Powered Applications
✅ Progressive Web Apps (PWA)
✅ Startup MVPs
✅ CRM & ERP Systems
✅ Marketplaces
✅ Booking & Scheduling Platforms
✅ Internal Business Tools
✅ Enterprise Applications
✅ Customer Portals
✅ Admin Dashboards
✅ Multi-Tenant Applications
✅ Business Automation Platforms
✤ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 :
Modern, fast, responsive, and user-friendly interfaces.
✔ React.js Development
✔ Next.js Development
✔ TypeScript Development
✔ JavaScript Development
✔ Progressive Web Apps (PWA)
✔ Responsive Web Design
✔ Tailwind CSS
✔ Bootstrap
✔ Dashboard Development
✔ Admin Panel Development
✔ Data Visualization
✔ Real-Time Interfaces
✔ Client Portals
✔ User Authentication Flows
✤ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 :
Scalable backend systems built for performance and growth.
✔ Node.js Development
✔ Express.js Development
✔ Laravel Development
✔ PHP Development
✔ Business Logic Development
✔ Authentication & Authorization
✔ Role-Based Access Control (RBAC)
✔ Multi-Tenant Architecture
✔ Queue Systems
✔ Background Jobs
✔ File Processing Systems
✔ Notification Systems
✔ Real-Time Services
✔ Scalable System Architecture
✤ 𝐀𝐏𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 :
Connecting systems and automating workflows.
✔ REST API Development
✔ GraphQL APIs
✔ Third-Party API Integrations
✔ Payment Gateway Integrations
✔ Stripe Integration
✔ PayPal Integration
✔ Twilio Integration
✔ Shopify Integration
✔ Firebase Integration
✔ Webhooks Development
✔ External System Integrations
✔ API Optimization & Security
✔ Microservices Architecture
✤ 𝐀𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 :
Helping businesses leverage AI beyond simple chatbots.
✔ OpenAI / ChatGPT Integration
✔ Claude AI Integration
✔ Gemini AI Integration
✔ AI Agents
✔ Multi-Agent Systems
✔ RAG Applications
✔ AI-Powered SaaS Products
✔ Knowledge Base Systems
✔ Semantic Search
✔ AI Customer Support Systems
✔ AI Workflow Automation
✔ Document Processing
✔ AI Recommendation Systems
✔ Vector Database Integration
✔ LangChain Applications
✔ AI Business Automation
✔ n8n Automation
✔ Make Automation
✔ Zapier Automation
✤ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐂𝐥𝐨𝐮𝐝 :
MongoDB| PostgreSQL| MySQL| Firebase| Supabase | AWS | DigitalOcean | Vercel | Docker | CI/CD Pipelines | Deployment Automation | Performance Optimization | Security Best Practices | Application Monitoring
✤ 𝐌𝐲 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 :
𝐃𝐢𝐬𝐜𝐨𝐯𝐞𝐫𝐲 → 𝐏𝐥𝐚𝐧𝐧𝐢𝐧𝐠 → 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 → 𝐔𝐈/𝐔𝐗 → 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 → 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 → 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 → 𝐒𝐜𝐚𝐥𝐢𝐧𝐠
I focus on delivering software that is maintainable, scalable, secure, and aligned with your business goals.
✤ 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 :
✔ Top Rated Plus Freelancer
✔ Strong Full Stack + AI Expertise
✔ Clean & Scalable Architecture
✔ Clear Communication
✔ Reliable Delivery
✔ Long-Term Support
✔ End-to-End Product Development
✔ Business-Focused Approach
From planning and architecture to deployment and scaling, I help businesses build software that is fast, reliable, maintainable, and ready for growth.
📩 If you're looking for a Full Stack Developer who can build modern SaaS platforms, AI-powered applications, Progressive Web Apps (PWA), APIs, dashboards, and scalable web solutions, let's discuss your project.
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Full Stack Developer | React.js Developer | Next.js Developer | Node.js Developer | Frontend Developer | Backend Developer | API Developer | SaaS Developer | PWA Developer | Progressive Web App Developer | Dashboard Developer | Admin Panel Developer | CRM Developer | ERP Developer | AI Developer | AI Agent Developer | OpenAI Developer | ChatGPT Integration | Claude AI | Gemini AI | RAG Developer | Automation Developer | MERN Stack
Associated with
Dynamic Dreamz: Shopify Development, AI, WordPress Development, Mobile App & Full-Stack Development
$5M+
earned
$45/hr
100%
Job Success
$500K+ earned
Available now
Start of list.
End of list.
⚡ Top Rated Plus React Developer | 13+ Years of Experience | 𝐀𝐈-𝐃𝐫𝐢𝐯𝐞𝐧 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 & Full Stack Engineer
⚡ 𝐌𝐨𝐝𝐞𝐫𝐧 𝐀𝐈 𝐒𝐭𝐚𝐜𝐤: 𝐂𝐮𝐫𝐬𝐨𝐫, 𝐋𝐨𝐯𝐚𝐛𝐥𝐞, 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞, 𝐆𝐢𝐭𝐇𝐮𝐛 𝐂𝐨𝐩𝐢𝐥𝐨𝐭, 𝐆𝐏𝐓-𝟒/𝐆𝐏𝐓-𝟒𝐨, 𝐂𝐥𝐚𝐮𝐝𝐞 𝐒𝐨𝐧𝐧𝐞𝐭/𝐎𝐩𝐮𝐬
⚡ 𝐀𝐈-𝐀𝐬𝐬𝐢𝐬𝐭𝐞𝐝 Debugging, Refactoring, UI Optimization & Frontend Automation
🙋♂️ Click Hire or Invite Full Stack React Developer | React Native Developer | 𝐀𝐈 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭
💻 WHAT YOU GET
Full Stack Node.js React Developer - 13+ years of engineering scalable SaaS platforms, dashboards, and heavy cloud-connected architectures.
React Developer with experience in Next.js - fast SSR/SSG implementation, SEO-optimized web setups, and advanced React Animation workflows.
React Native Developer - high-performance Hybrid App Development for iOS, Android, and Smartphone ecosystems.
📊 ACHIEVEMENTS IN NUMBERS (BUSINESS IMPACT)
13+ years, 25,000+ hours, 100+ digital products delivered as a Senior React Developer, ReactJS Developer, and Front-End Developer.
Full Stack Developer React Node for an Enterprise SaaS & React Dashboard:
Boosted data rendering and page load speed by 210% using advanced caching, Next.js, and state management (Redux).
Reduced server infrastructure costs by 40% by optimizing Node.js API backend architecture and MongoDB query aggregation.
React Developer Firebase Specialist for an AI-powered MVP:
Accelerated time-to-market by 6 weeks utilizing AI App Development workflows and serverless Firebase integrations.
Increased user activation rates by 35% by implementing pixel-perfect Web Design and interactive micro-interactions with smooth React Animation.
React Native & Hybrid App Development for a FinTech Smartphone App:
Designed and launched a cross-platform iOS & Android application from a single codebase, saving the client 45% in budget.
Boosted mobile conversion rates by 25% using deep Responsive Design practices for all Smartphone form factors.
🎯 WHERE I DELIVER (EXPERTISE)
As a React Developer & Front-End Developer: I build fluid, scalable user interfaces from scratch using JavaScript, TypeScript, HTML5, and CSS / Bootstrap, ensuring a premium feel.
As a Next.js & React Dashboard Architect: I implement secure admin panels, real-time analytics hubs, complex data visualizations, and modern server-side architectures.
As a Full Stack Node.js React Expert: End-to-end product engineering from building custom backend APIs with Node.js and Python, to structuring stable database layers via MongoDB and SQL.
As a React Native Developer: High-fidelity Hybrid App Development, native device feature integration (biometrics, camera, background tasks) for iOS and Android Smartphone devices.
As a React Designer: Bridging the gap between UI/UX and code, ensuring that layouts respect the developer-ready guidelines and maintain a conversion-focused approach.
🛠 HOW I BUILD (TECH SKILLS)
Core Frontend: React, React.js, Next.js, JavaScript, TypeScript, HTML5, CSS, Bootstrap, Tailwind CSS.
State & Data Architecture: Redux, Redux Toolkit, Zustand, React Query, Apollo GraphQL.
Backend & API Systems: Node.js, Python, MongoDB, Firebase, REST API, GraphQL.
Mobile & Hybrid Platforms: React Native, Hybrid App Development, Smartphone apps, iOS, Android integrations.
Advanced Mechanics: React Animation (Framer Motion), React Dashboard UI, Responsive Design, Web Design, Web Performance Engineering.
🤖 AI-DRIVEN DEVELOPMENT WORKFLOW
As an AI-Driven Frontend & Full Stack Engineer, I actively combine 13+ years of core engineering logic with cutting-edge AI-native tools (Cursor, Claude Code, GitHub Copilot, OpenAI GPT-4o, Claude Sonnet) to:
Accelerate Delivery: Speed up repetitive front-end development by 30-40%, getting your MVP to launch faster.
Enhance Code Quality: Automated AI-assisted code reviews, bulletproof refactoring, and AI-enhanced CI/CD pipelines.
AI App Development: Smooth integration of third-party AI models (LLMs, vectors, embeddings) directly into your React or mobile interface.
⚡ SERVICES I OFFER
Full-scale React MVP Development & Next.js SaaS setups
Full Stack React & Node.js application scaling
React Native mobile app interfaces & Hybrid App Development
Highly interactive React Dashboard & Admin Panel systems
Native API integrations & multi-tenant cloud architectures
Looking for a world-class Full Stack Node.js React Developer | React Native Developer | Next.js Specialist who understands how to transform engineering code into real business growth?
Let’s connect!
Send me a message detailing your product goals, and let's craft a solid plan for your sprint. 🚀
Volodymyr P.
has worked
.
Associated with
Onix-Systems, LLC
$30M+
earned