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Full Stack AI Developer who's shipped to millions and built infrastructure for cutting-edge science. At McGill, I build data pipelines, web systems, and compute clusters that process petabyte-scale data from radio telescopes in real time. That's the engineering side. Running in parallel for 8+ years: a 1.7M-subscriber tech YouTube channel, a tech news site I founded, and freelance work featured in Forbes, Uber, and more. I love technology and science, and I've spent my whole career on both sides of it. I don't just write code, I build products people actually use. Bring me an idea and I'll turn it into something real and production-grade. I've shipped AI-powered apps across fintech, healthtech, and SaaS, led full platform handovers, and advised founders on what to build before they burn budget on it. Models are easy. Building something users love, that scales, and that doesn't fall apart in production is the hard part, and that's what I do. 🔧 Toolbox: Frontend: React, Next.js, Angular, React Native, Tailwind, Vue, Nuxt Backend: Python (FastAPI, Django, Sanic), Node.js, Go AI/ML: PyTorch, TensorFlow, Hugging Face, LangChain, OpenAI/Anthropic APIs Data & infra: PostgreSQL, MongoDB, Redis, Kafka, Docker, Kubernetes, AWS/GCP DevOps: microservices, serverless, CI/CD, observability with Prometheus and Grafana If you want someone who can own the entire stack end-to-end, add AI where it matters, and ship without endless rewrites, hit me up.

I am a full stack developer that could develop any software you can imagine. I handle and build anything tech related for businesses, which includes AI, websites, apps, and automations, and currently handle the tech for tens of businesses. I keep everything I build running, so that is one less thing you ever have to worry about, and I send clear updates on everything. Most importantly, I respect your time. Where others need five meetings, I need one, because I think things through before I ask, and come to you with options, not just questions. Most of my recent work is AI products already shipped and in use. I helped build Hilt Health, an AI platform that integrates 9 AI agents into clinics. I create full stack apps in React, Next.js, React Native, Node.js, and PostgreSQL, and I handle AI and LLM integration end to end: chatbots, voice AI, automations, and more. So whether you want to take an idea from nothing to a live app, add AI to your product, or automate the manual work slowing your team down, I can help. Message me with your idea and let us figure out the first step together.

Full Stack Developer * 100+ clients with * 100% Success Score ⭐️⭐️⭐️ [BONUS]: I am a full stack developer ⚡ with strong expertise in building complete, production-ready digital products across modern web and mobile ecosystems. I work confidently as a full stack, full-stack developer, fullstack developer, web developer, front-end developer, backend developer, react developer, wordpress developer, shopify developer, python developer, python full stack developer, blockchain developer, and full-stack web developer — adapting to whatever the project requires. My core specialization is React development ⚛️. I deliver high-performance interfaces as a full stack developer react, react frontend developer, front-end developer react, and frontend react specialist. I build complex UI systems, responsive layouts, and scalable architectures using JavaScript, TypeScript, React, React Native, Vue.js, Angular, and Flutter. As a front-end engineer, I ensure every component is clean, maintainable, and optimized. On the backend, I work with Node.js, PHP, Laravel, and Python 🐍, building secure APIs, advanced integrations, cloud-ready systems, and efficient SQL/MongoDB structures. I deliver full-stack solutions as a php fullstack developer, full stack developer laravel, python full stack developer, and .net full stack contributor. I also develop streaming platforms and dashboard systems using fullstack developer figma mongo sql react next video streaming workflows. For CMS and e-commerce projects, I work as a wordpress developer, wordpress full stack engineer, wordpress front end developer, shopify developer, and shopify front end developer 🛒. I build custom themes, plugins, storefront logic, and integrations. My front-end skill stack includes HTML5, CSS3, SCSS, jQuery, Webflow, responsive design, PSD to HTML, and full end-to-end Figma design translation. I combine UI/UX thinking 🎨 with strong engineering standards, ensuring that every feature, animation, and interaction aligns with the product’s goals. Clean architecture, maintainability, and performance are always my priorities. I collaborate with startups, SaaS founders, agencies, and teams needing a reliable senior-level specialist who can own the entire product lifecycle — from architecture to deployment 🚀. I am comfortable leading development or integrating into existing workflows using Git, agile methodologies, CI/CD, and modern tooling. If you are looking for a versatile full-stack developer able to handle everything from front-end development framework tasks to backend infrastructure, from React and Next.js to Laravel, Python, WordPress, Shopify, and full-stack platform engineering — I’m ready to help. I focus on clarity, speed, and delivering solutions that move businesses forward. Let’s build something great together 🤝 keywords: full stack developer, full stack, full-stack developer, fullstack developer, web developer, react developer, wordpress developer, mobile app developer, software developer, blockchain developer, python developer, python full stack developer, full stack developer ai, full stack developer react, full stack developer shopify, full stack developer laravel, php fullstack developer, fullstack developer figma mongo sql react next video streaming, front-end developer full-stack, full-stack Front-end developer, Frontend developer, Front-end developer, front end developer, react frontend developer, frontend developer angular, front end developer react, wordpress front end developer, shopify front end developer, front end developer figma, JavaScript, TypeScript, React, React Native, Vue.js, Angular, Flutter, Node.js, PHP, Laravel, Python, MySQL, MongoDB, HTML, HTML5, CSS, CSS3, SCSS, jQuery, Webflow, WordPress, Figma, Git, Web design, Responsive design, UI/UX, PSD to HTML, Website, Web application, full-stack web developer, backend developer, front-end development framework web developer, wordpress developer, full stack developer, front end developer, shopify developer, react developer, react native, react js, frontend react, java react full stack developer, python full stack developer, .net full stack, wordpress full stack, full stack developer react, full stake developer front end developer, front end developer react, front end designer, shopify front end developer, front end engineer, front-end developer, JavaScript React Node.js HTML5 Web Development PHP Next.js TypeScript CSS Tailwind CSS HTML API API Integration Web Design PostgreSQL API Development CSS 3 MongoDB WordPress Full-Stack Development jQuery Python Web Application CMS Development Website RESTful API React Native AngularJS Supabase Front-End Development AI Development ExpressJS Android App Development Website Redesign NestJS RESTful Architecture MySQL .NET Framework Responsive Design Docker Tailwind UI n8n Web3 OpenAI API Graphic Design Landing Page SaaS Angular Redis Vue.js Amazon Web Services Database Architecture AI App Development Ruby on Rails REST API C#

🏆 +9 years of combined experience as a Front-End Developer & UI Designer ✅ Available now! (~40h/w) 🤝 From design to front-end development, providing end-to-end solutions with on-time delivery 🚀 React.js, Next.js, JavaScript, TypeScript, WordPress 🎨 Figma, Canva, Adobe Illustrator, Adobe Photoshop Hi there 👋 I'm Ayaka Kojima, a freelance Front-End Developer & UI Designer with 9+ years of experience. No more juggling between a designer and a developer. From brand identity and logo design, to UI, to fully coded front-end. One person, one process, no gaps 🌟 If you're launching something new, I can own the whole thing from day one. If you're a small team looking for ongoing support, I understand both design and development, so I pick up context fast, keep communication light. Do you have a question or idea? No idea is too early. I'm happy to think it through with you from wherever you are. Feel free to text me "Hi" 💬 💎 𝐒𝐤𝐢𝐥𝐬 𝖢𝗈𝖽𝗂𝗇𝗀 𝗅𝖺𝗇𝗀𝗎𝖺𝗀𝖾𝗌 : HTML5, CSS3, SASS, TypeScript, JavaScript, PHP 𝖥𝗋𝖺𝗆𝖾𝗐𝗈𝗋𝗄𝗌 : React.js, Next.js 𝖫𝗂𝖻𝗋𝖺𝗋𝗂𝖾𝗌 : Tailwind CSS, Bootstrap, Material UI, Styled-Components 𝖣𝖾𝗌𝗂𝗀𝗇 : Figma, Canva, Adobe Illustrator, Adobe Photoshop 𝖢𝖬𝖲 : microCMS, WordPress 𝖵𝖾𝗋𝗌𝗂𝗈𝗇 𝖢𝗈𝗇𝗍𝗋𝗈𝗅 𝖳𝗈𝗈𝗅𝗌 : GitHub 🤝 𝐄𝐱𝐚𝐦𝐩𝐥𝐞𝐬 𝐨𝐟 𝐇𝐨𝐰 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 Web Development - React.js / Next.js Component Development - Corporate & E-commerce Website Development - Responsive Design for Mobile and Desktop - Performance Optimization & SEO-Friendly Structure UI Design - Wireframing and Prototyping with Figma - UI Redesign for Usability and Appeal - Targeted UI for Specific Demographics - Style Guide for Consistent Design Graphic & Branding Design - Logo Design Reflecting Brand Identity - Comprehensive Brand Identity with Guidelines - Social Media Marketing Materials - Custom Illustrations with Adobe Illustrator & Photoshop 💬 𝐑𝐞𝐯𝐢𝐞𝐰𝐬 ⭐⭐⭐⭐⭐ - Front-End Development & UI Design for a SaaS Platform "She handled feature discussions to design and development. Her skills helped us achieve our vision quickly. And the process was simple and stress-free. We couldn't have done it without her. Highly recommend Her skills!" ⭐⭐⭐⭐⭐ - Front-End & UI Design for a D2C E-commerce Site "Ayaka was absolutely amazing! Working with her was like having both a gifted designer and a proficient developer on our team. She effortlessly collaborated with everyone, turning ideas into sleek, functional designs and executing them with precision. Her commitment and expertise continually pushed our project to new heights." ⭐⭐⭐⭐⭐ - UI Design mobile app for a Fitness App "Her incredible design skills brought our platform to life! It truly resonates with our target audience, especially women. She has a talent for balancing beauty and functionality seamlessly!" ------------ React.js Development, Next.js Development, Component-Based Architecture, TypeScript Development, State Management (Redux, Context API), Responsive Web Design, Mobile-First Design, CSS Frameworks (Tailwind CSS, Material UI), Styled Components, Web Accessibility (WCAG), Cross-Browser Compatibility, Performance Optimization, Lazy Loading, Single-Page Applications (SPA), Reusable Components, Design Systems, UI Design, UX Design, User Interface Design, User Experience Design, Figma, Adobe Photoshop, Web UI, Mobile UI Design, Responsive Web Design, Mockup Design, High-Fidelity Design, Layout Design, Landing Pages Design

You’ve got an idea — I help you turn it into a real product that’s fast, scalable, and user-focused. Whether it’s a SaaS platform, a cross-platform mobile app, or an AI-powered solution, I build products that get to market quickly, perform flawlessly, and delight users from day one. I specialize in full-stack web and mobile app development using: React, React Native, Next.js, Node.js (Express / NestJS), TypeScript, TailwindCSS, Firebase, MongoDB, PostgreSQL, AWS, Vercel, Docker, Supabase, MoEngage, OpenAI API, LangChain, and more. My approach is simple — understand your product vision, move fast, and build something that lasts. I handle everything from frontend UX to backend APIs, authentication, payment integration, and cloud deployment — so you can focus on growth while I handle the tech. What I Can Do for You Build fast, responsive web apps and cross-platform mobile apps using React & React Native. Architect and integrate secure backend systems with Node.js and TypeScript. Set up authentication, user management, and payment systems (Stripe, Firebase, Cognito). Integrate AI/LLM features using OpenAI API or LangChain. Enhance user engagement and retention with MoEngage and in-app analytics. Deploy and scale your apps using AWS, Vercel, Firebase, or Supabase. Startup Experience At Dastgyr, a fast-growing B2B marketplace startup, I worked on three key products — seller, customer, and driver apps — built with the MERN stack and React Native. Automated the seller onboarding process, improving efficiency and reducing manual steps. Redesigned the cart-to-checkout flow, boosting usability and conversions. Integrated Google Maps API for real-time logistics and MoEngage for behavioral tracking. I also built a Blood Donation Platform in React Native and Firebase, connecting donors and recipients through real-time location tracking — a project that brought both impact and innovation together. If you’re a startup founder or product lead looking for a developer who codes with purpose, understands product velocity, and delivers high-quality results — let’s bring your idea to life and get it into users’ hands fast.

I help startups build, fix, and launch production-ready SaaS platforms and mobile applications using Next.js, React, React Native, Expo, and Supabase. I’m a Top Rated Plus developer with a 100% Job Success Score and more than 3,600 hours completed on Upwork. I work across frontend, backend, database architecture, API integrations, AI features, and deployment. I can help you: • Build SaaS platforms, dashboards, portals, and MVPs • Develop cross-platform iOS and Android apps with React Native and Expo • Design secure Supabase and PostgreSQL backends • Configure authentication, Row Level Security, Storage, and Realtime • Build Supabase Edge Functions and automated backend workflows • Integrate REST APIs, payment systems, CRMs, and third-party services • Add OpenAI-powered features and n8n automations • Debug unstable applications and repair unfinished or AI-generated codebases • Improve performance, database queries, reliability, and maintainability • Deploy web apps to Vercel and mobile apps through EAS, the App Store, and Google Play My experience includes React and Supabase platforms, React Native mobile applications, AI-enabled client portals, role-based management systems, subscription products, and automated data synchronization pipelines. I’m especially valuable when a project already exists but needs someone to diagnose problems, complete unfinished features, improve the architecture, or prepare it for production. You can expect clear communication, maintainable code, reliable delivery, and honest technical recommendations. I focus on building products that work beyond the demo stage and remain stable as they grow. Send me your current stack, project status, and the main problem you need solved, and I’ll recommend the most practical next step.