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Nigeria
$20/hr
100%
Job Success
$20K+ earned
Available now
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Principal Software Architect and Senior Full-Stack Engineer with 13+ years of hands-on experience designing, implementing, and scaling cloud-native, distributed systems for web and mobile applications. I specialize in frontend architecture, backend systems, API design, and cloud infrastructure, with a strong emphasis on scalability, performance, security, and long-term maintainability.
Since 2012, I have delivered and maintained production-grade systems across eCommerce, streaming platforms, SaaS products, and enterprise business applications. My expertise spans system design, microservices architecture, event-driven systems, and CI/CD-driven delivery pipelines, enabling teams to ship reliable, high-performance software at scale.
I operate comfortably at architecture, implementation, and optimization levels, bridging product requirements with robust technical solutions. I design systems that are API-first, modular, fault-tolerant, and cloud-optimized, while maintaining high engineering standards and clean code practices.
Technical Expertise
Frontend Architecture
React.js, Next.js (App Router, SSR/SSG/ISR), React Native
TypeScript, ECMAScript, Component-Driven Architecture
Design Systems, Atomic Design, Reusable UI Libraries
Tailwind CSS, Material UI, Ant Design, Chakra UI
Performance optimization, code splitting, caching strategies
Backend & API Engineering
Node.js, Express.js, NestJS
RESTful APIs, GraphQL, API Gateway patterns
Authentication & Authorization (JWT, OAuth2, RBAC)
Microservices & Modular Monolith architectures
Background jobs, queues, and asynchronous processing
Cloud & DevOps
AWS: EC2, S3, RDS, DynamoDB, Lambda, CloudFront, API Gateway
GCP: Cloud Run, Cloud Functions, Firebase, Cloud Storage
Containerization: Docker, container-based deployments
CI/CD: GitHub Actions, GitLab CI/CD
Infrastructure-aware application design, environment isolation
Data & CMS
PostgreSQL, MongoDB, Redis
Headless CMS: Strapi, Contentful, Contentstack
Data modeling, indexing, and query optimization
System Quality & Delivery
Performance profiling and optimization
Security-first development practices
Observability, logging, and error monitoring
Version control: GitHub, GitLab
Agile tooling: Jira, Asana, Trello, Slack, Basecamp
I am not just a developer I design systems, reduce technical risk, and improve delivery velocity. If you need a senior engineer who can own architecture decisions, scale your platform, and deliver production-ready solutions, I am available to discuss your project.
Venezuela
$25/hr
100%
Job Success
$70K+ earned
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Hello my name is Felix Lopez, I am a Web and Mobile developer with 5 year of experience designing and developing quality apps and websites that are adaptable, powerful, modern in style and visually attractive. I am self-taught, always looking for ways to improve my skills by putting challenges in every new project I work on.
Felix L.
has worked
.
$55/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
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Hello! I'm Arshad K., a Full Stack Game Developer with 10+ years of experience building high-performance casino platforms, games, immersive AR/VR applications, blockchain solutions, and AI-powered systems.
With $200K+ earned on Upwork, a Top Rated badge, and a 100% Job Success Score across 50+ projects, I build high-quality video games and interactive experiences for startups, studios, and global clients.
I help startups and businesses build scalable gaming products, from casino platforms and Unity games to Web3 gaming ecosystems and AI-driven applications.
🎰 Casino Platform & Game Development
Full Casino Platform Development (Frontend, Backend, Admin Panels)
Casino Game Development: Poker, Blackjack, Roulette, Baccarat, Dice Games, Mystery Box Games
Mobile Casino Applications for iOS & Android
Lottery & Raffle Systems
Secure Payment Gateway Integration
🎮 Game Development
Unity 2D / 3D Game Development
Mobile, PC, Web, and Multiplayer Games
Development using:
Unity
Unreal Engine
Cocos Creator
Three.js
High-performance interactive games and simulations
🕶️ AR / VR Development
AR/VR applications and games for:
Meta Quest 2
Meta Quest 3
Apple Vision Pro
Immersive simulations and interactive XR experiences
⛓️ Blockchain & Web3 Development
Blockchain Integration for Gaming Platforms
Smart Contract Development
Crypto Wallet Integration
NFT Marketplaces
Experience with Ethereum, TON, and other blockchain networks
🤖 AI & LLM Integration
Integration of Large Language Models (LLMs) into games and applications
Experience with leading models:
OpenAI
Gemini
Claude
Llama
Qwen
AWS Q
AI Development Stack
LangChain
RAG (Retrieval Augmented Generation)
Vector Databases
Whisper
Deepgram
ElevenLabs
Chatterbox
AI Use Cases
AI NPCs and intelligent game characters
Voice AI and speech interaction systems
AI chat assistants and copilots
AI-powered storytelling and procedural content
Knowledge-based AI systems using RAG
🎯 Additional Expertise
Gaming UI/UX Design
Secure Payment Systems
Telegram Mini Apps & Clicker Games
Scalable Backend Systems for Gaming Platforms
💡 I focus on delivering high-quality, scalable, and engaging digital experiences using modern technologies like AI, Web3, and immersive gaming platforms.
If you're looking for a developer who understands Gaming, AI, Blockchain, and AR/VR, let's build something amazing together.
📩 Feel free to reach out to discuss your project.
$90/hr
100%
Job Success
$20K+ earned
Available now
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⚡ Upwork Top Rated Plus Developer — AI First Coder — Top 1% Developer on Upwork
🖥️ Core Expertise
Backend & Architecture: PHP (Laravel , WordPress) | Next.js | Node.js | ASP.NET (Core & Framework) | Event‑driven systems | Microservices | WebSockets
Frontend: ⚛️ React | Vue.js | Nuxt | VueX | Vuetify | TailwindCSS | Responsive Design
Laravel Ecosystem Expertise: 🔗 Inertia.js | ⚡ Livewire | ⚙️ Nova | 🧩 Filament | 🔐 Sanctum | 🛡️ Passport | 📡 Echo | 🎙️ Reverb | 📊 Scout | 📈 Pulse | 🗂️ Voyager | 🌸 Orchid | ☁️ Vapor | 🔭 Horizon |🔥 Vite
WordPress Development: 🎨 Elementor Pro | 🏗️ Divi | 🔧 WPBakery | 🛠️ Beaver Builder | ⚡ Oxygen | 🧱 Bricks | 🌐 Avada | 🚀 Astra | 🌀 GeneratePress
WooCommerce: 🛒 Advanced store setups | 💳 Payment gateways | 🔄 Multi‑vendor marketplaces | ⚡ Performance tuning
Middle Layer Development: Strong knowledge in middleware, API orchestration, and service communication layers.
Performance Optimization: ⚡ Core Web Vitals | WP Rocket | Redis/Memcached | CDN setup | Server‑side caching
Automation & AI Tools: 🤖 Replit | Claude | Antigravity | ChatGPT | Gemini | Copilot | Zapier | Make | Klaviyo | n8n — building stable & scalable solutions with custom + 3rd‑party API integrations.
Real‑Time Communication: 📡 WebRTC | QuickBlox | Twilio — integrated for chat, video, and live collaboration systems.
Payment Gateway Expertise: 💳 Deep knowledge of integration & customization with Stripe, PayPal, Braintree, Authorize.Net, Razorpay, PayU, Adyen, Square, Klarna, WorldPay, 2Checkout, Mollie, Skrill, Payoneer, Apple Pay, Google Pay, Amazon Pay, Alipay, WePay
🎯 Why Work With Me
⚡ Performance‑Oriented: Speed, scalability, and technical hygiene are non‑negotiables.
🔄 Full‑Cycle Expertise: Database design → backend architecture → deployment → monitoring → optimization.
👨💻 Leadership Mindset: Clean code, thorough reviews, and mentoring when needed.
🌍 Proven Track Record: 180+ happy clients including international authors, speakers, and companies worldwide
I am a Computer Science Engineer with 12+ Years of experience. I have worked with 180+ happy clients including the best international authors, speakers, and companies all over the world.
You can rely on my expertise and experience. I like to create simple solutions to complex problems.
📅 Feel free to hit "𝐈𝐍𝐕𝐈𝐓𝐄" Button. Available to Start Immediately.
Associated with
DWebPixel Technologies Pvt Ltd
$30K+
earned
$35/hr
100%
Job Success
$90K+ earned
Available now
Offers consultations
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Top-Rated Plus Upwork Freelancer
Worked with 150+ clients globally
Certified Developer
𝐓𝐡𝐚𝐭’𝐬 𝐰𝐡𝐚𝐭 𝐈 𝐝𝐨.
My name is Syed Yousuf, I am a Top-Rated Plus frontend developer on Upwork who’s worked with founders, agencies, and startups around the world.
For the past few years, I’ve been helping clients turn their ideas and designs into a frontend that works and works well.
My focus🤔?
React, Next.js, TailwindCSS, Framer Motion, Gatsby, and all the tools that make your site stand out.
I’ve worked with startups, agencies, SaaS teams, and solo founders.
They come back because I’m easy to work with, I deliver fast, and I take their ideas seriously.
𝐇𝐞𝐫𝐞 𝐈𝐬 𝐖𝐡𝐚𝐭 𝐓𝐡𝐞𝐲 𝐒𝐚𝐲:
Worked fast and delivered on the assignment. Went above and beyond to deliver many enhancements to make the landing page even better. It was a pleasure working with Yousuf.
Syed was great to work with. He met all of my goals and was very responsive. Would definitely use him again for future projects!
If you already have a design (like a Figma), I’ll turn it into a real frontend that looks exactly how you want.
If you don’t, I can help you plan the frontend flow so it’s easy to use and clean.
Want to see how I’d help your project?
Just send me a quick message — tell me what you’re building.
I’ll reply fast and tell you how I can bring it to life.
No pressure. No big talks. Just solid help, ready when you are. Before jumping into my DM’s, I want you to visit my portfolio & intro video. Thank you so much 💙
Frontend developer, React expert, Next.js developer, TailwindCSS, web development, landing page design, responsive web design, Framer Motion, Gatsby, JavaScript, UI/UX design, Figma to frontend, fast delivery, clean code, frontend development services
Associated with
Expedey LLC
$20K+
earned
$25/hr
100%
Job Success
$30K+ earned
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🥇 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐢𝐧 𝐅𝐫𝐨𝐧𝐭-𝐞𝐧𝐝 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠
🥇 𝐎𝐯𝐞𝐫 10+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭
🥇 1𝐤+ 𝐔𝐩𝐰𝐨𝐫𝐤 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐡𝐨𝐮𝐫𝐬
🥇 𝐂𝐨𝐧𝐬𝐢𝐬𝐭𝐞𝐧𝐭𝐥𝐲 𝐇𝐢𝐠𝐡 𝐂𝐥𝐢𝐞𝐧𝐭 𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧 𝐰𝐢𝐭𝐡 𝐏𝐨𝐬𝐢𝐭𝐢𝐯𝐞 𝐑𝐞𝐯𝐢𝐞𝐰𝐬
🥇 𝐅𝐨𝐜𝐮𝐬 𝐨𝐧 𝐂𝐨𝐝𝐞 𝐐𝐮𝐚𝐥𝐢𝐭𝐲, 𝐚𝐧𝐝 𝐁𝐞𝐬𝐭 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞
🔥 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝗳𝗼𝗿 𝗳𝘂𝗹𝗹 𝘁𝗶𝗺𝗲 𝗷𝗼𝗯𝘀*
My name is 𝐘𝐚𝐬𝐢𝐧 𝐉𝐮𝐧𝐞𝐭 and I’m a Front-end engineer (React/Gatsby/Next/Astro/Vue) with 10+ years of experience. I have working experience in 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬, 𝐀𝐠𝐢𝐥𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐒𝐚𝐚𝐒, 𝐚𝐧𝐝 𝐀𝐈-𝐫𝐞𝐥𝐚𝐭𝐞𝐝 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬. I have a passion for designing detailed and user-focused web apps.
You can have a look at my online portfolio for more details: yasinjunet[dot]com
𝐒𝐨𝐦𝐞 𝐨𝐟 𝐭𝐡𝐞 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐭𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐩𝐫𝐨𝐯𝐢𝐝𝐞:
✅ Front-end development with React.js | Astro | Next.js | Gatsby.js | Vue.js | Nuxt.js | JAMSTACK (Javascript or Typescript)
✅ Headless CMS using WordPress, Prismic, Contentful, DatoCMS, Strapi, etc.
✅ Converting design from Figma, XD, etc.
✅ Pixel perfect and responsive layout build using HTML/CSS/Javascript
✅ e-Commerce using Shopify Hydrogen, and Medusa.js
✅ API integration, and GraphQL
✅ Mobile development with React Native
✅ Website optimization
✅ Netlify, Vercel, Cloudflare, Github Pages, Digital Ocean, and AWS.
✅ Testing using Jest, Testing Library, Cypress
✅ UI/UX Design*
𝐋𝐄𝐓'𝐒 𝐆𝐄𝐓 𝐂𝐎𝐍𝐍𝐄𝐂𝐓𝐄𝐃 𝐓𝐎𝐃𝐀𝐘!
Thank you 🙌
Yasin J.
has worked
.
$25/hr
100%
Job Success
$10K+ earned
Start of list.
End of list.
As a Top Rated Plus Frontend Developer, I translate product requirements into intuitive interfaces, ensuring smooth interaction flows and optimized component architecture. I work extensively with React, Next.js-based ecosystems, building reusable components, managing state effectively, and integrating seamlessly with backend APIs to deliver full-featured applications.
A large part of my work involves developing SaaS dashboards, admin panels, and data-driven interfaces where usability and performance are critical. I focus on structuring frontend applications in a way that supports long-term scalability, maintainability, and easy collaboration with backend systems and APIs.
I also pay close attention to performance optimization, responsive design, and cross-browser compatibility. This includes improving load times, reducing unnecessary re-renders, and ensuring that applications perform well across devices and user environments.
Overall, I build frontend systems that are not only visually clean and user-friendly but also architecturally solid, scalable and aligned with modern development standards for long-term product growth.
Let's connect!
Associated with
Qbatch
$1M+
earned
$20/hr
100%
Job Success
Offers consultations
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Senior AI and Full-Stack Developer based in Canada with 10+ years building production web applications for healthcare, enterprise, and SaaS clients across North America. Acquia Certified Drupal Developer (D9). Top Rated on Upwork.
I help businesses ship reliable, scalable web platforms from custom Drupal builds and React applications to AI-powered features that automate real workflows. My work has supported brands like MyEyeDr, American Scientist, Overcoming MS, JourneyRx, Distinctly Montana, and Indiana Bankers Association.
🔧 What I build:
Drupal 9/10: custom modules, theming (Twig), migrations, performance tuning, third-party API integrations, HIPAA-aware healthcare implementations
AI / LLM integrations: chatbots, RAG search, content automation, document intelligence using OpenAI, Anthropic, and open-source models
WordPress: custom plugins, theme development, WooCommerce, headless WP with React/Next.js
React, Next.js, Node.js: modern web apps, SSR, REST/GraphQL APIs, Redux, performance optimization
Cloud / DevOps: AWS (EC2, S3, CloudFront), Docker, CI/CD pipelines, Git workflows
📌 Recent work:
→ Built a HIPAA-context module integrating a third-party API to deliver patient data to physicians (Drupal + secure data layer)
→ Led performance, security, and scalability work on enterprise Drupal sites significant improvements to load times via advanced caching strategies
→ Developed custom Drupal modules and themes for U.S. healthcare and publishing clients, including third-party integrations for payment, social, and marketing automation
→ Built responsive React + Sass + Bootstrap front-ends with WCAG-accessibility compliance
✅ Why clients hire me:
Acquia-certified Drupal expertise: backed by 8+ years of production deployments
Canada-based: clear English communication, North American timezone, easy contract terms
Healthcare & regulated-industry experience: I understand security, accessibility, and compliance, not just code
Reliable delivery: known for hitting deadlines and shipping clean, maintainable code
Full-stack ownership: I handle the full lifecycle, from architecture and dev through deployment and AWS hosting
🤝 How I work:
I prefer clear, scoped engagements with milestones. For larger projects, I provide a written technical proposal before kickoff so expectations are aligned. I'm comfortable with both fixed-price and hourly engagements, and I'm available for short fixes (under a week), multi-month builds, or ongoing maintenance retainers.
📍 Location: Greater Toronto Area, Canada
💼 Available: Open to new contracts immediately
🌐 Agency: Enodevs
Let's talk about your project. Send a quick message with your goals and I'll tell you honestly whether I'm the right fit, what it would cost, and how long it would take.
Associated with
Enodevs Corporation
$15/hr
100%
Job Success
$100K+ earned
Start of list.
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I'm a highly experienced Full Stack Web Developer with over 10 years of expertise in building powerful, secure, and scalable web solutions. I’ve successfully completed 88+ projects with 100% job success score and earned $150K+, delivering consistent value and quality to global clients.
𝗠𝘆 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲:
→ Frontend: HTML5, CSS3, JavaScript, TypeScript, React.js, Next.js, Vue.js, jQuery, Bootstrap, Tailwind
→ Backend: PHP (Core & OOP), Laravel, Node.js, Express.js, NestJS, REST API, GraphQL
→ AI & Automation: OpenAI API / ChatGPT Integration, AI Chatbot Development, Workflow Automation
→ CMS & E-commerce: WordPress (Custom Themes & Plugins), WooCommerce, Headless CMS
→ Database: MySQL, PostgreSQL, MongoDB, Firebase, Redis
→ API & Integrations: RESTful APIs, GraphQL, Stripe, PayPal, CRM Integrations, WebSockets
→ DevOps & Cloud: AWS, Docker, CI/CD Pipelines, Git, GitHub Actions, Vercel, Netlify, cPanel, VPS
𝗪𝗵𝗮𝘁 𝗜 𝗢𝗳𝗳𝗲𝗿:
→ Full-Stack SaaS Development — multi-tenant architecture, subscription billing, role-based access
→ AI-Powered Web Applications — ChatGPT integrations, AI dashboards
→ Custom E-commerce & Marketplace Solutions— WooCommerce, headless storefronts
→ SEO-optimised, responsive, and pixel-perfect websites built for Core Web Vitals
→ Clean, modular, well-documented codebase — easy to handoff or scale
→ Agile delivery— sprint-based workflow, Jira/Trello tracking, daily updates
→ Transparent communication, strong problem-solving, and consistent on-time delivery
→ Long-term partnerships built on trust, quality, and measurable performance
From custom websites to full-scale web applications, I am well-equipped to handle projects of any complexity using modern technologies, SEO best practices, full-stack development, API integration, performance optimization, and website maintenance.
Looking forward to collaborating with you.
Warm regards,
Hitesh
Your Technology Partner for Scalable Digital Growth
Associated with
Sparkle Infotech
$45/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
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I've successfully built and launched over 30 SaaS apps and over 15 AI based products in the last 4 years.
I personally have a lot of hands-on experience with:
- Development of AI and Generative AI Apps & SaaS products
- Mobile Apps Development, many of the apps I built are on App Store and Play store
- Web Apps and Website development, having worked with many startups, SMEs and enterprises 🏢
- Certified AWS Cloud Specialist 👨🏻💻
- Chrome extensions development for productivity tools
- working with Startups to build their MVPs that can help them raise funding
- working with Enterprises and corporations to help improve their existing processes with the help of automation, cloud infrastructure deployment and internal tools development
Having worked independently and successfully as a freelancer for many years, I planned to build a team of my own back in 2021, and as of this writing, 4 years later, we have grown to a team of 50+ highly talented, highly skilled, proficient, and hardworking team members. The company is called RipeSeed, and you can find it in my profile as well.
Over the course of 4 years:
- Many of our team members have received Top Rated Plus badge 🥇
- I received Expert Vetter badge 🎖️
- RipeSeed, my agency, received Expert Vetter badge 🎖️
🌏 Our client base so far has primarily been from US, UK, Australia, UAE, Saudi Arabia, Germany and a few other European countries, but we are open to work with anyone from anywhere in the world who needs our help.
💯 I have been involved in either working directly or managing over 200 projects and I am always open to trying out new and exciting technologies.
🎙 I love talking tech. So I am always available for free consultancy sessions if you wanna see if you idea is worth investing in, how much of time and cost effort will be required from your side
Our team has skills in the following technologies and we'd love to help anyone who might need any of the following services:
🤖 Generative AI: GPT-3.5, GPT-4, GPT-4o, Langchain, Pinecone, Llama 3, Llama 3.1, Embeddings, Fine Tuning, Chunking, Sementic Chunking, Spacey
👨🏻💻 Web: React, NextJS, JavaScript, NodeJS, NestJS, ExpressJS, Full Stack Development, Frontend Development, Backend Development, Python, Django, Flask
📱 Mobile Apps: React Native, Android, iOS, Flutter, Cross Platform, App Store, Play Store, Publishing applications
🎛 Chrome extensions: Chrome Manifest 3, Chrome Manifest 2, JavaScript, React, Popup plugin, embedding elements into web pages
🌩 AWS & GCP: Cloud Native, EC2, Elastic Beanstalk, CloudFormation, AWS Amplify, Serverless Framework, AWS Cognito, AWS IAM, Rekognition, S3, Config, Elastic Load Balancer
Drop me a message and I'd love to chat.
Associated with
RipeSeed
$1M+
earned