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Full-Stack Developer | Nuxt.js, Next.js, Laravel, Django, FastAPI | AWS, Firebase | No-code I’m a seasoned Full-Stack Developer with expertise in building scalable web applications and backend systems using JavaScript, TypeScript, Python, PHP, and modern frameworks like React, Node.js, Laravel, Django, and FastAPI. What I deliver: • Responsive frontends using React, Next.js, Vue, and Nuxt • Scalable backends with Node.js (Express), Django, FastAPI, Flask, Laravel, and PHP • API-first architecture with REST and GraphQL • Cloud-based systems with AWS, Firebase, and Supabase • DevOps & deployment with Docker, GitHub Actions, CI/CD • Database management with PostgreSQL, MySQL, MongoDB • Automation tools, batch scripting, and backend jobs Tech Stack: JavaScript, TypeScript, Python, PHP, C#, Java, React, Next.js, Node.js, Vue, Nuxt, Express, Laravel Django, FastAPI, Flask, Docker, AWS, Firebase, Supabase, PostgreSQL, MongoDB, Bash, REST, GraphQL, Bubble.io, Softr, Airtable, Tally, Wix, Zapier, Make, DocuSign Why choose me? • Clear communication, fast turnaround, and proactive updates • Clean, well-documented, and maintainable code • Full ownership from architecture to deployment • Proven track record working with startups, agencies, and enterprise teams • Committed to delivering high-quality work that solves real business problems Whether you need a sleek frontend, a powerful backend, or an all-in-one full-stack solution — I’m here to help bring your ideas to life, on time and at scale. Let’s build something remarkable together! 🤝 keywords: JavaScript, TypeScript, Tailwind CSS, HTML, CSS, Bootstrap, React, React Native, Expo, Python, Django, FastAPI, Flask, Vue.js, Next.js, Nuxt.js, PHP, Laravel, Postman, Figma, Adaptive Web Design, User Experience Design, User Interface Design, Style Guide, Landing Page, builder.io, Design Mockup, Design Enhancement, Automation, Data Visualization, Zapier, Make, DocuSign, Airtable, Softr, Bubble.io, Tallyform, AWS, EC2, S3, Cloudfront, DynamoDB, RDS, Terraform, VPC, MySQL, PostgreSQL, MongoDB, GraphQL, ElasticSearch, PostGIS, Google Map, Foot traffic, heatmap, dashboard, analytics, C#, windows application, VPN

I develop, debug, and convert TradingView Pine Script and MT5/MQL5 tools with clean documentation, testing steps, and human-review checkpoints. I also build AI-assisted workflow automation using n8n, Claude, APIs, and Python, with a focus on logging, maintainability, and risk-aware design. My past work includes indicator debugging, strategy conversion, backtesting support, automation workflows, and EdTech tools backed by 30 years of teaching experience. AI Workflow Automation Your AI employee who never sleeps. I design business workflows using Claude MCP, Cowork, and n8n that automate repetitive tasks. Submit work at night, wake up to results. Quarterly maintenance subscriptions keep your setup current as AI tools evolve. Recent: AI workflow consultation for a beauty salon. Trading Tool Development From 1,850 live trades to your custom algorithm. Pine Script indicators for TradingView (QQE v3.0 with strong community support), MT5/MT4 Expert Advisors with verified backtest results, NinjaScript strategies, and TradeStation EasyLanguage. Cross-platform deployments where the same logic runs consistently on every platform. Educational Technology Claude Code + MCP + 30yr STEM Expert = Your unfair advantage. AI-powered question generators, exam preparation apps (530+ question database for university entrance exams), and STEM curriculum development. I combine deep subject matter expertise with AI to produce educational content that works. I work through text-based asynchronous communication. This produces clearer specifications, better documentation, and a complete record of every decision. Portfolio links: See my GitHub, MQL5, and YouTube profiles in the Portfolio section below.

Hi, I’m Yoshiyuki - a full‑stack and front‑end web developer with 25+ years in IT and 13 years building modern web applications. I love creating clean, user‑friendly, and scalable software, and I enjoy working closely with clients to turn ideas into something real and useful. My main tools are Angular, Java, TypeScript, Node.js, AWS, and Google Cloud, and I’ve recently added AI‑accelerated development to my workflow. Using tools like Copilot and Claude helps me move faster, explore more ideas, and deliver MVPs and prototypes quickly - while still keeping the code clean and maintainable. What I can help you build - Fast MVPs and prototypes - Internal tools and dashboards - CRUD applications - Front‑end architecture (Angular specialist) - Cloud‑ready applications (AWS / GCP) - AI‑assisted development for rapid delivery A bit about my background I’ve led teams, built internal Angular libraries used across 10+ teams, redesigned front‑end architectures for long‑term sustainability, and delivered MVPs for government and enterprise clients. I’m comfortable taking a rough idea and turning it into a working product. How I work - Friendly and easy to communicate with - Clear explanations and regular updates - Clean, maintainable code - Fast iteration using AI‑assisted workflows - Flexible with time zones and schedules If you’re looking for someone who can move quickly, collaborate openly, and deliver solid, future‑ready software, I’d be happy to help bring your project to life.

🏆 Top Rated Plus | 🥇 7+ Years Industrial Experience | 💯 100+ Satisfied Clients What started as a passion for solving coding challenges has grown into a career of 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐢𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭, 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐞𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, from full-stack web applications to AI-driven workflows that save businesses hours every day. Over the past 7+ years, I’ve helped companies transform the way they operate by combining 𝐀𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧, 𝐆𝐨 𝐇𝐢𝐠𝐡 𝐋𝐞𝐯𝐞𝐥 (𝐆𝐇𝐋) 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧𝐬 into solutions that don’t just work, but actually accelerate growth. ✅ 𝐇𝐨𝐰 𝐈 𝐂𝐚𝐧 𝐇𝐞𝐥𝐩 𝐘𝐨𝐮 - 𝑨𝑰 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 & 𝑨𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏: Chatbots, AI employees, predictive analytics, and recommendation systems. - 𝑭𝒖𝒍𝒍-𝑺𝒕𝒂𝒄𝒌 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕: Scalable, production-ready apps using React, Next.js, Node.js, TypeScript, Laravel, and PHP, from MVPs to complex SaaS platforms. Whether it's a server-rendered Next.js app, a Node.js API, or a strictly typed TypeScript codebase, I build for performance and maintainability. - 𝑮𝒐 𝑯𝒊𝒈𝒉 𝑳𝒆𝒗𝒆𝒍 𝑪𝑹𝑴: Account setup, pipeline automation, workflows, triggers, and 3rd-party integrations. - 𝑭𝒖𝒏𝒏𝒆𝒍𝒔 & 𝑪𝒐𝒏𝒗𝒆𝒓𝒔𝒊𝒐𝒏𝒔: High-converting sales funnels, lead capture systems, nurturing workflows. - 𝑪𝒍𝒐𝒖𝒅 & 𝑰𝒏𝒕𝒆𝒈𝒓𝒂𝒕𝒊𝒐𝒏𝒔: AWS, APIs, and external tool integrations for smooth automation. - 𝑰𝒏𝒅𝒖𝒔𝒕𝒓𝒚 𝑬𝒙𝒑𝒆𝒓𝒊𝒆𝒏𝒄𝒆: Industry Experience: Healthcare (HIPAA-compliant development), Fintech, Real Estate, Legal Tech, and multiple service-based industries, delivering secure, scalable, and compliance-ready solutions. 📌 𝐑𝐞𝐜𝐞𝐧𝐭 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬: -Designed 𝑨𝑰-𝒑𝒐𝒘𝒆𝒓𝒆𝒅 𝒄𝒉𝒂𝒕𝒃𝒐𝒕𝒔 & 𝒂𝒔𝒔𝒊𝒔𝒕𝒂𝒏𝒕𝒔 for SaaS platforms to improve customer engagement and support. -Built a 𝒎𝒖𝒍𝒕𝒊𝒍𝒊𝒏𝒈𝒖𝒂𝒍 𝒄𝒐𝒂𝒄𝒉𝒊𝒏𝒈 𝒑𝒍𝒂𝒕𝒇𝒐𝒓𝒎 with real-time AI features, automated invoicing, and Stripe/PayPal payments. -Optimized 𝑪𝑹𝑴𝒔 (𝑺𝒖𝒊𝒕𝒆𝑪𝑹𝑴, 𝒁𝒐𝒉𝒐, 𝑯𝒖𝒃𝑺𝒑𝒐𝒕, 𝑮𝑯𝑳, 𝑺𝒖𝒊𝒕𝒆𝑫𝒂𝒔𝒉)— boosting lead tracking and workflow efficiency. My clients describe me as 𝒑𝒓𝒐𝒂𝒄𝒕𝒊𝒗𝒆, 𝒓𝒆𝒍𝒊𝒂𝒃𝒍𝒆, 𝒂𝒏𝒅 𝒐𝒖𝒕𝒄𝒐𝒎𝒆-𝒇𝒐𝒄𝒖𝒔𝒆𝒅. I don’t just deliver code — I build 𝒔𝒄𝒂𝒍𝒂𝒃𝒍𝒆 𝒔𝒚𝒔𝒕𝒆𝒎𝒔 that reduce manual work, streamline operations, and give businesses a competitive edge. 👉 Whether you need an 𝑨𝑰-𝒑𝒐𝒘𝒆𝒓𝒆𝒅 𝒇𝒖𝒏𝒏𝒆𝒍, 𝑮𝑯𝑳 𝒂𝒖𝒕𝒐𝒎𝒂𝒕𝒊𝒐𝒏 𝒔𝒆𝒕𝒖𝒑, 𝒐𝒓 𝒂 𝒇𝒖𝒍𝒍-𝒔𝒕𝒂𝒄𝒌 𝒂𝒑𝒑 𝒘𝒊𝒕𝒉 𝒊𝒏𝒕𝒆𝒍𝒍𝒊𝒈𝒆𝒏𝒕 𝒇𝒆𝒂𝒕𝒖𝒓𝒆𝒔, I can help you get there. Let’s turn your ideas into systems that work smarter, not harder. 𝑲𝒆𝒚𝒘𝒐𝒓𝒅𝒔: Node JS, Next.js, React, PHP Developer, Laravel Expert, WordPress Developer, React JS Developer, Vue JS Developer, CRM Customization Expert, SuiteCRM Developer, SugarCRM Specialist, GoHighLevel Expert, GoHighLevel Integration, GoHighLevel Automation Specialist, GoHighLevel Funnel Builder, GoHighLevel Workflow Automation, SuiteDash Setup, Zoho CRM Customization, HubSpot CRM Developer, API Integration Specialist, AWS Certified Developer, AWS Lambda Developer, Cloud Web Developer, Chatbot Developer, AI Integration Specialist, AI Employee Setup, Data Migration Expert, MySQL Expert, PostgreSQL Developer, MongoDB Specialist, Database Design Consultant, Custom CRM Development, Real Estate Platform Developer, E-commerce Website Developer, Lead Management System Expert, Workflow Automation Specialist, Predictive Analytics Developer, SaaS Platform Developer, Funnel Design Expert, Marketing Automation Specialist, Stripe Payment Gateway Developer, WordPress Plugin Developer, AI-Powered Web Apps, Secure Cloud App Developer, Sales Funnel Optimization, CRM Automation Expert, High-Converting Funnel Developer, AI Chatbot Integration, Fintech, HIPPA, Stripe, Paypal, Real Estate

“I reverse-engineer complex problems, ask the right questions, and deliver production-ready code that drives business growth.” Hey there! I’m a product-minded Full-Stack Developer who owns the entire product lifecycle—from database architecture to cloud deployment. With a background managing international sports teams across Asia, I thrive under pressure, communicate transparently, and excel at aligning with clients even when project specifications are unclear. I don't just write code; I treat your application as a business. Whether you need to modernize a legacy application or build a secure, scalable web app from scratch, I focus on clean architecture, high performance, and rapid shipping. 🚀 WHAT I BUILD FOR YOU: SaaS Platforms & MVPs Fast: Turn your product idea from a wireframe into a fully deployed, launch-ready application in weeks, not months. Legacy System Modernization: Migrate slow, outdated systems (e.g., C# to modern tech stacks) into clean, scalable architectures with zero downtime. API Integration & Complex Backends: Design and implement robust, high-throughput RESTful APIs using Python and FastAPI. ⚡ RECENT WINS: Led the full-stack modernization of a 100+ screen legacy C# application to Next.js and FastAPI, successfully solving complex AWS serverless bottlenecks. Single-handedly built and launched a B2B staff scheduling SaaS (Shift-Pilot) that reduced administrative workload by 80%. 🤖 AI-POWERED FAST SHIPPING: I leverage modern AI engineering tools to double development speed while maintaining enterprise-grade code quality and security: AI Tools: Cursor, GitHub Copilot, ChatGPT, v0.dev, Claude Code Note: I don't implement AI features just to look trendy—only when it directly automates workflows and cuts operational costs. 🛠 EXPERT SKILL STACK: Frontend: Next.js, React, TypeScript, JavaScript, Tailwind CSS Backend & APIs: Python, FastAPI, Node.js, RESTful API Design Cloud & Database: MongoDB, PostgreSQL, AWS (Lambda), Serverless, GitHub Actions (CI/CD) If you are looking for a reliable, technical partner who communicates in plain English (no tech-jargon) and delivers high-performance solutions, let's talk! 📩 Send me a message or invite me to your project. Let's hop on a quick call!

I help overseas companies build web applications that work for the Japanese market. As a Japanese-native full-stack developer, I bring native Japanese for communication, QA, and localization review — combined with solid technical ability in Next.js, React, TypeScript, and AI integration. - Web Application: Wandering Log — a full-stack app with Google Maps API, AI chat assistant, and Stripe subscription integration. Live demo in my portfolio. - AI Development: RAG Assistant — built with LangChain, ChromaDB, and Claude API. Demo video in my portfolio. I communicate clearly, meet deadlines, and won't disappear mid-project. Please check my portfolio highlights to see both projects in action.