𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 || 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐏𝐥𝐮𝐬 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 || 𝐂𝐡𝐞𝐜𝐤𝐨𝐮𝐭 𝐄𝐱𝐭𝐞𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲 & 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐅𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐬 || 𝐇𝐞𝐚𝐝𝐥𝐞𝐬𝐬 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 (𝐍𝐞𝐱𝐭.𝐣𝐬/𝐇𝐲𝐝𝐫𝐨𝐠𝐞𝐧) || 𝐂𝐮𝐬𝐭𝐨𝐦 𝐀𝐩𝐩𝐬 & 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 || 𝐅𝐢𝐠𝐦𝐚 𝐭𝐨 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 || 𝐂𝐮𝐬𝐭𝐨𝐦 𝐒𝐞𝐜𝐭𝐢𝐨𝐧𝐬 & 𝐌𝐞𝐭𝐚𝐟𝐢𝐞𝐥𝐝𝐬 || 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐌𝐢𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 || 𝐂𝐑𝐎 & 𝐒𝐩𝐞𝐞𝐝 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧 𝟖𝟒𝟓+ Shopify Projects Completed ⏱️ 𝟑𝟑,𝟖𝟔𝟗+ Hours Logged on Upwork 🛒 𝟕𝟐𝟓+ Businesses Served Globally 🏅𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 — 𝟖 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 I'm a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐏𝐥𝐮𝐬 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 specializing in custom store builds, pixel-perfect Figma-to-Shopify implementation, and full-stack development from theme to backend. Whether you have a finished design that needs to come to life exactly as intended, an outdated store that needs migrating to Shopify or Shopify Plus, or a custom feature no out-of-the-box app can handle, I build it clean, fast, and scalable, without unnecessary app bloat or technical debt that slows you down later. 𝐖𝐇𝐀𝐓 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐖𝐈𝐓𝐇 🎨 𝐃𝐞𝐬𝐢𝐠𝐧-𝐭𝐨-𝐒𝐭𝐨𝐫𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✅ Figma to Shopify, pixel-perfect implementation ✅ Custom themes built from scratch (Liquid, OS 2.0) ✅ Responsive, mobile-first builds across all devices ✅ Custom sections, blocks & metafields ✅ UI/UX refinement for better usability & conversions 🛍️ 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐏𝐥𝐮𝐬 & 𝐇𝐞𝐚𝐝𝐥𝐞𝐬𝐬 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✅ Headless storefronts with Next.js / Hydrogen ✅ Checkout UI Extensions & Shopify Functions ✅ Shopify Flow automation ✅ Enterprise-level architecture & scaling 🔁 𝐒𝐭𝐨𝐫𝐞 𝐌𝐢𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 ✅ Migration to Shopify / Shopify Plus from WooCommerce, Magento, BigCommerce & others ✅ Theme upgrades & Online Store 2.0 migrations ✅ Data migration: products, customers, orders & metafields ✅ Zero-downtime cutover planning ⚙️ 𝐂𝐮𝐬𝐭𝐨𝐦 𝐀𝐩𝐩𝐬 & 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 ✅ Admin & Storefront API, GraphQL development ✅ Public, private & embedded apps (Node.js, React) ✅ Webhooks, custom logic & merchant workflow tools ✅ Product bundles, custom pricing & checkout logic 🚀 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 & 𝐂𝐥𝐞𝐚𝐧𝐮𝐩 ✅ Speed optimization (40–60% faster load times) ✅ Removing unused apps & legacy code ✅ Clean code refactoring & Git-based workflows ✅ Long-term maintenance & technical support 📩 𝐋𝐞𝐭'𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐆𝐫𝐞𝐚𝐭 👉 Send me a message or invite me to your job, and let's discuss how to bring your store to life or take it to the next level. Best, Prince 🔑 Core Shopify Keywords #Shopify Developer #Shopify Expert #ShopifyPlusDeveloper #ShopifyFullStackDeveloper #ShopifyStoreDevelopment #ShopifyStoreCustomization #ShopifyWebsiteDevelopment #ShopifyThemeCustomization 🛒 Shopify Store & Theme Keywords #ShopifyThemeDevelopment #ShopifyLiquidDeveloper #ShopifyOnlineStore2.0 #ShopifySpeedOptimization #ShopifyUX/UIDesign #ShopifyLandingPageDesign #ShopifyStoreMigration #ShopifyStoreSetup #FigmatoShopify #ShopifyDesignImplementation ⚙️ Shopify App Development Keywords #ShopifyAppDeveloper #CustomShopifyApp #ShopifyPrivateAppDevelopment #ShopifyPublicAppDevelopment #ShopifyAppIntegration #ShopifyAppBridge #ShopifyEmbeddedApps 🔗 API & Integration Keywords #ShopifyAPIIntegration #ShopifyGraphQLAPI #ShopifyWebhooks #ShopifyERPIntegration #ShopifyAutomation #ShopifyWorkflowAutomation 🏢 Shopify Plus Keywords #ShopifyPlusExpert #ShopifyPlusCheckoutCustomization #ShopifyFunctionsDeveloper #ShopifyFlowAutomation #ShopifyScriptsMigration #ShopifyHeadlessDevelopment

Greetings! Alex here - a London-based UX/UI Designer, Full Stack Developer, and AI-focused product builder. I design, build, and optimise digital products with AI embedded across the full lifecycle - from research, UX, and interface design to development, automation, project delivery, and internal tooling. I also build custom AI solutions for my own workflows and help businesses implement AI in ways that are practical, commercially useful, and technically sound. My work sits at the intersection of product thinking, full-stack execution, and applied AI. That includes everything from AI-assisted delivery and automation to more advanced AI development such as RAG systems, LLM integrations, fine-tuning workflows, machine learning implementation, and custom AI-powered product features. Why work with me: • Expert-vetted professional trusted to deliver high-impact work across design, development, and AI-led execution • Top-Rated Plus with a strong track record of shipping thoughtful user experiences and reliable technical solutions • Among the top 1% in design and development, with AI deeply integrated into how I work and what I build • 99% of clients rate my work 5/5, reflecting consistent quality across strategy, execution, and communication What sets me apart: I combine design, engineering, and AI implementation in one end-to-end approach. 1. AI-enhanced design - I use AI to accelerate research, explore UX directions faster, test concepts, support content thinking, and improve design workflows without losing human judgement. 2. AI-supported development - I use AI across architecture, implementation, debugging, optimisation, QA thinking, and documentation to move faster while maintaining technical quality. 3. AI product development - I help build AI-native features and products, including chat experiences, AI assistants, internal copilots, recommendation flows, knowledge systems, and automation tools. 4. LLM and RAG expertise - I work with retrieval-augmented generation systems, document-aware AI workflows, vector-based search, prompt architecture, context pipelines, and knowledge-grounded assistants. 5. Machine learning and fine-tuning - I understand how to approach model selection, fine-tuning workflows, dataset preparation, evaluation logic, feedback loops, and practical ML implementation where it genuinely adds value. 6. AI for operations and project management - I apply AI to planning, task structuring, documentation, QA workflows, communication, and internal process efficiency. 7. Custom AI tooling - I develop my own AI-powered tools and workflows and help others create bespoke AI systems tailored to their teams, products, and business models. 8. Holistic execution - design, engineering, AI, and delivery are handled as one connected system, reducing friction and improving outcomes. Clear communication, transparency, and quick responsiveness remain central to how I work. AI improves the process - it does not replace ownership, thinking, or quality control. What you’ll get from me: • UX/UI design shaped by product thinking and accelerated by AI-assisted workflows • Full-stack development with strong technical foundations and modern delivery methods • Practical AI integration into products, operations, and internal workflows • Support with RAG systems, LLM-based features, fine-tuning direction, ML-related implementation, and AI automation • End-to-end ownership from discovery and prototyping through to development, launch, and iteration Technical toolbox: UX/UI & Product Design • Figma, Sketch, Adobe XD, InVision • Wireframing, prototyping, user flows, usability testing • AI-assisted design exploration, research synthesis, and workflow acceleration Frontend Development • React.js, Next.js, Vue.js, JavaScript (ES6+), TypeScript • HTML5, CSS3, Tailwind, BEM, jQuery Backend Development • Node.js, Express, Python, Django, DRF, PHP, Laravel, Ruby on Rails • REST APIs, GraphQL • Backend architecture for AI features, automations, and internal tools AI Development • LLM integrations and AI application development • RAG systems and document-aware assistants • Prompt engineering and context orchestration • Fine-tuning workflows and evaluation thinking • Machine learning implementation and applied AI use cases • AI automation and workflow design • Custom AI tools and internal copilots Databases & Infrastructure • PostgreSQL, MySQL, MongoDB, Redis • Vector-friendly data and knowledge pipeline thinking • AWS, DigitalOcean, Docker, Jenkins, Nginx Let’s build products and systems that are not only well designed and technically strong, but also smarter, faster, and more valuable through the right use of AI.

I help businesses and eCommerce brands grow revenue through fast, mobile-first, and conversion-optimized websites built on WordPress, WooCommerce, BigCommerce, and Shopify. As a Senior Full- Stack WordPress, Shopify and BigCommerce developer, I specialize in creating high-performance online stores with custom theme development, plugin creation, and seamless checkout experiences that turn your vision into measurable business results. 𝐖𝐡𝐚𝐭 𝐈 𝐎𝐟𝐟𝐞𝐫: ➡️ Custom WordPress & WooCommerce Theme Development Crafting bespoke themes that represent your brand and integrate seamlessly with WordPress and WooCommerce, ensuring optimal functionality and scalability of the platform ➡️ Shopify & BigCommerce Store Development & Optimization Expertly building Shopify and BigCommerce stores with custom features, product pages, smooth checkout flows. ➡️ Advanced Plugin & App Development Creating custom plugins for WordPress and apps for Shopify/BigCommerce to add unique functionalities, integrations, or enhance user experiences. ➡️ WordPress Plugin Development Whether you need a custom plugin to add specific functionality or integration with third-party services, I specialize in plugin development that is lightweight, efficient, and built to enhance your website's performance. ➡️ Advanced WooCommerce Customization I have extensive experience in WooCommerce customization, I tailor the shopping experience by optimizing product pages, adding advanced filtering options, and configuring subscriptions, membership systems, and dynamic pricing models to create a smooth, high-converting sales funnel. ➡️ Seamless API Integrations Connecting third-party services, CRMs, ERPs, and payment gateways to your WordPress, WooCommerce, Shopify, or BigCommerce store for smooth, unified operations. 𝐖𝐡𝐲 𝐦𝐞: ➡️ 10+ years of hands-on experience in WordPress, WooCommerce, and eCommerce development, delivering scalable, secure, and high-performing websites with clean code and best practices. ➡️ 100+ successfully completed projects for startups, SMEs, and enterprise clients, with a proven record of consistent 5⭐ reviews, long-term partnerships, and repeated clients. ➡️ Ongoing Website Maintenance & Support Providing ongoing support with regular updates, security audits, performance monitoring, and feature enhancements to keep your WordPress, WooCommerce, Shopify, or BigCommerce website secure, fast, and always up-to-date. ✨ 𝗧𝗘𝗖𝗛 𝗧𝗢𝗢𝗟𝗞𝗜𝗧 & 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞 Platforms: BigCommerce, Shopify, WordPress, WooCommerce Frameworks/Builders: Stencil, Shopify 2.0, Elementor, Next.js Languages: Liquid, JavaScript (ES6+), PHP, HTML5, CSS3 Tools: Git:Figma, VS Code, Google Lighthouse Automation/CI-CD: Appstle, Zapier, n8n, GitHub Actions, staging pipelines Add-ons: Bold Subscriptions, Appstle, Klaviyo, WooFunnels, Mailchimp ✨ 𝗣𝗥𝗢𝗝𝗘𝗖𝗧 𝗦𝗡𝗔𝗣𝗦𝗛𝗢𝗧𝗦 ✅ DTC BigCommerce Store: Mobile-first UX redesign & Appstle checkout = +27% checkout conversion & revenue uplift ✅ Marketplace Platform: Vendor dashboard, Stripe payout logic & SEO schema for increased vendor engagement ✅ Subscription SaaS Application: Cloud-native multi-tenant architecture, automated billing & usage analytics dashboards ✅ Wholesale Portal: B2B tiered pricing, order workflows & REST ERP synchronization for streamlined operations ✅ Digital Product Platform: License delivery, Apple Pay integration, GDPR-compliant secure UX ✅ Headless Implementation: Gatsby front-end + BigCommerce backend delivering lightning-fast page loads ✨ 𝗡𝗜𝗖𝗛𝗘 𝗙𝗢𝗖𝗨𝗦 𝗔𝗥𝗘𝗔𝗦 • DTC Brands & Subscription Commerce • Multi-Vendor Marketplaces & B2B Wholesale Platforms • SaaS Products with Modular APIs and Usage Dashboards • Digital Content Delivery & Licensing Stores • HealthTech / EdTech Platforms, membership & gated content systems Message me today to turn your vision into a fast, scalable, and conversion-optimized WordPress, WooCommerce, or BigCommerce experience. Keywords : WordPress Developer | WooCommerce Developer | Shopify Developer | BigCommerce Developer | Ecommerce Developer | Full Stack WordPress Developer WordPress Developer | Custom WordPress Themes | WooCommerce Customization | BigCommerce Store Development | Shopify Store Expert | WordPress Plugin Development | eCommerce Website Design | WordPress & WooCommerce Integration | WordPress Website Developer | Custom Plugin & App Development for WooCommerce, Shopify & BigCommerce | Full-Stack eCommerce Developer | Web Developer | WordPress Site Build + WordPress Site Upgrade | Senior Full-Stack Developer ( WordPress and Shopify ) Website developer | Elementor Website Fine-Tuning | eCommerce Developer | eCommerce website Developer | Senior WordPress Developer | Shopify Designer | WooCommerce Expert | Shopify Website Developer Needed | WordPress Website Developer Needed | WordPress Subscription Billing Platform | Shopify Developer (Full Stack) for Ongoing Client Support | Shopify Expert

I design and build custom platforms, high-converting websites, and web applications for governments, investment firms, and funded startups. Currently building the Cayman Islands National Resilience Scorecard, the country's first online decision-support platform, funded by the European Union through the Green Overseas (GO) Programme, implemented by Expertise France and IRMA. This is a national-scale web application serving multiple government ministries. I also have 10+ years helping commercial teams ship revenue-critical products, including teams backed by Coinbase Ventures, Sequoia, and Techstars that have collectively raised over $1B. Recent commercial work includes a boutique investment firm website ($7,500 engagement, 5-star review), a university web application, and conversion-optimized ecommerce stores. Whether you need a custom web application, a website redesign, an online store, or a platform that handles complex workflows, I bring product thinking, clean design, and senior engineering to every project. WHAT I DELIVER - - - - - - - - - - Website Design & Redesign I'm a website designer who builds clean, fast, fully responsive sites. Whether it's a brand new company website, a full redesign of an outdated site, or a high-converting landing page, I handle design and development end to end. Webflow Development: Sites built using Webflow and Finsweet's Client-First framework Ecommerce & Online Stores: Custom Shopify development, theme customization, and stores that convert Design-to-Code: Convert Figma, Adobe XD, or Sketch files into responsive websites SEO & Speed: Optimized sites that rank higher and load in under 2 seconds Landing Pages: Boost conversions for campaigns, product launches, and lead generation Custom Platforms & Web Applications Decision-support tools and dashboards for government and institutional clients Multi-stakeholder workflow platforms with complex user roles Data visualization and indicator-driven interfaces Booking systems, customer portals, and internal tools React/TypeScript applications with custom backends TECH STACK - - - - - - - - - - Development: HTML/CSS, JavaScript, Liquid (Shopify), React, TypeScript, Node.js Design: Figma, Adobe XD, Photoshop, InVision, Illustrator Platforms: Webflow (Client-First), Shopify, Squarespace Mobile: React Native (iOS and Android) CLIENT RESULTS - - - - - - - - - - "Chris did an outstanding job modernizing our Silicon Valley based management technology consulting firm's website. He used Webflow skillfully to create a clean, mobile friendly design that replaced our outdated site with a modern, mobile-friendly, and professional look. From rapid mockups to final delivery, Chris worked at a patient and deliberate pace; never rushed and always thoughtful. He is soft spoken in the best way: calm, clear, and responsive throughout. A pleasure to work with, and we highly recommend him to anyone looking for a web designer with strong design instincts and a collaborative approach!" "Chris delivered our new company website design and implementation under tight timelines and with excellent quality. I would hire him again for his design skills, organization, creative eye, and professional engagement." "Chris rebuilt our Webflow store, sales grew 50% in 6 months!" Recent Work: National Resilience Scorecard for the Cayman Islands Government (EU-funded, React/TypeScript) Custom web application for a university in Boston Webflow-based inventory tracker for a warehouse (reduced errors by 40%) Conversion-optimized landing page for a contractor (leads increased 120%) WHY WORK WITH ME - - - - - - - - - - 10+ years shipping products for governments, investment firms, and funded startups, from national platforms to high-converting ecommerce stores Techstars alum, 100% Job Success on Upwork, clients whose products have collectively raised over $1B Clear communication, scoped timelines, and a process built around getting to launch without surprises Ready to discuss your project? Book a quick call!

𝗛𝗲𝘆 👋 𝗜’𝗺 𝗗𝗶𝗺𝗮, 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗮𝗻𝗱 𝗦𝗮𝗮𝗦 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝗺𝗼𝗿𝗲 𝘁𝗵𝗮𝗻 𝟭𝟬 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗶𝗻 𝘄𝗲𝗯 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽𝘀, 𝗮𝗻𝗱 𝗯𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀. 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗳𝗮𝘀𝘁, 𝘀𝗲𝗰𝘂𝗿𝗲, 𝗮𝗻𝗱 𝘂𝘀𝗲𝗿-𝗳𝗿𝗶𝗲𝗻𝗱𝗹𝘆 𝗦𝗮𝗮𝗦 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀, 𝗰𝗿𝘆𝗽𝘁𝗼 𝗲𝘅𝗰𝗵𝗮𝗻𝗴𝗲𝘀, 𝐜𝐫𝐲𝐩𝐭𝐨 𝐰𝐚𝐥𝐥𝐞𝐭𝐬 𝗮𝗻𝗱 𝗺𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲𝘀 𝘁𝗵𝗮𝘁 𝗵𝗲𝗹𝗽 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝘀𝗰𝗮𝗹𝗲 𝗮𝗻𝗱 𝘀𝘂𝗰𝗰𝗲𝗲𝗱. If you need a reliable React developer, Node.js backend developer, or mobile app developer who can take your idea from concept to launch, you’re in the right place. 🔸 100% Job Success 🔸 5.0 Review Rating 🔸 TOP 1% on Upwork 🔸 $600k+ Earned by Agency 🎯 Highlights of My Experience 1) Over 10 years of hands-on experience as a Full-Stack Developer and SaaS developer. 2) Delivered more than 200 projects, including 27 crypto exchange platforms, 35 multi-vendor marketplaces, 14 crypto wallets, and 43 SaaS apps. 3) Strong expertise in React, Node.js, JavaScript, and blockchain development for scalable applications. 4) Deep understanding of cryptocurrency, currency exchange systems, crypto wallets and marketplace ecosystems similar to Amazon. 5) Focused on clean architecture, performance, and clear communication. ⚙️What I Do I design and develop SaaS platforms, marketplaces, crypto wallets and crypto exchanges that are modern, secure, and easy to manage. As a full-stack developer, I work with React on the frontend and Node.js or Laravel on the backend, connecting everything through strong APIs. Here’s how I can help you: 1) SaaS development: building analytics dashboards, subscription systems, and cloud-based tools for your business. 2) Crypto exchange development: creating cryptocurrency and currency exchange apps with wallets, real-time trading, and admin dashboards. 3) Marketplace development: developing multi-vendor marketplaces with complex payment flows, order management, and seller portals. 4) Web development: crafting high-performing React and Next.js web apps optimized for speed and SEO. 5) Mobile app development: developing native and cross-platform apps with React Native that integrate seamlessly with your SaaS or crypto backend. 6) Blockchain development: implementing smart contracts, Web3 integrations, and secure wallet features. 7) Crypto wallet development: creating mobile wallet and digital wallet apps similar to Trust Wallet with blockchain integration, security layers, and user-friendly crypto-trader tools. 🧰 Tech Stack 1) Frontend: React, Next.js, Vue.js, Tailwind CSS, JavaScript 2) Backend: Node.js, Nest.js, Express.js, Laravel, PostgreSQL, MongoDB 3) Mobile: React Native, Flutter, Firebase 4) Blockchain: Ethereum, Binance Smart Chain, Solana, Solidity, Web3.js, Ethers.js 5) Cloud & DevOps: AWS, Docker, CI/CD, Google Cloud Every product I build combines React performance, Node.js reliability, and blockchain security to support scalable crypto exchanges, wallets, and SaaS platforms. 🌟 Why Work With Me 1) 100% Job Success and 5.0★ client rating. 2) Over $100k earned through completed SaaS, marketplace, and crypto projects ( crypto exchanges and crypto wallets ). 3) Transparent communication and full project ownership. 4) I handle both frontend and backend development, including React, Node.js, and API integration. 5) Experienced blockchain developer for crypto exchange UI, mobile wallet, and digital wallet apps. 6) Proven record of building secure blockchain infrastructures trusted by crypto traders and businesses worldwide. 💡 Specializations 1) SaaS developer (dashboards, analytics, automation) 2) Full Stack Developer (React / Node.js / JavaScript) 3) Blockchain developer (smart contracts, wallets, DeFi) 4) Marketplace developer (multi-vendor systems, Amazon-style models) 5) Crypto exchange developer (secure currency exchange platforms) 6) Web developer and React developer (modern UI/UX and API-driven apps) 7) Mobile app developer (React Native, Flutter) 8) Backend developer (Node.js, Nest.js, Laravel) 9) Crypto wallet developer (mobile wallet, digital wallet, Trust Wallet-style apps) If you’re looking for a Full-Stack Developer who can build your next SaaS, crypto exchange, or crypto wallet app with React, Node.js, and blockchain, let’s connect. I respond quickly and can help you turn your idea into a working product that users will love with my BDM skills. 💬 Message me today, and let’s start building something amazing.

I build AI-powered products, RAG systems, AI agents, LLM-driven apps, and ship them production-ready in weeks, not months. 12 years of engineering. $4.5B in platform transactions. scaled products to 8 millions users. I don't just integrate APIs, I architect complete AI-native products. What I actually build: → RAG pipelines with vector search (Pinecone, pgvector), custom embeddings, chunking strategies, and hybrid retrieval → Autonomous AI agents, tool-calling, multi-step workflows, LangChain/LangGraph orchestration → LLM-powered features using OpenAI, Claude, and Gemini, structured outputs, streaming, prompt engineering → Voice AI systems, real-time speech processing, conversational agents, automated operations → Full-stack product development: Next.js, React Native, Node.js, Python, PostgreSQL, AWS Recent work that shows the range: Aura Health: Built an AI health companion with LLM orchestration across mobile, desktop, and ChatGPT. 8M+ active users. Sonea.ai: Voice AI agents for logistics. Real-time speech processing, autonomous order management, invoice generation. Zero manual intervention. Navero : AI-driven recruitment platform. Automated screening, interview scheduling, candidate analytics. Cut hiring cycles from months to weeks. Keller Williams: Modernized a legacy real estate platform across 35 countries. $4.5B in transaction volume. TryHackMe: Rebuilt core architecture for scale. Went from 2M to 6M users with zero performance degradation. Good fit if: - You're building an AI product, chatbot, RAG system, AI agent, LLM features and need it production-ready. - You have an existing app and want to add AI capabilities (intelligent search, document Q&A, workflow automation). - You need an MVP shipped fast by someone who understands product, not just code - You want clear communication, daily updates, and no surprises. I work US timezone hours. Async updates via Loom + daily standups. Clean code, tested, documented. Message me with your project details. I typically respond in a few hours and scope most projects within a day.

I’m a systems and process design engineer with 25+ years of experience leading complex projects, optimizing workflows, and building scalable technical solutions. Over the course of my career, I’ve worked across engineering, operations, and technology-driven environments, giving me a deep understanding of how to translate real-world requirements into efficient, reliable systems. As a project lead and process strategist, I’ve guided teams through every stage of delivery: from initial scoping and architecture to execution, optimization, and long-term support. Today, I bring that experience to my role at NetzOptimize, a full-service web and software development firm that I help lead. For nearly two decades, our team has specialized in full-stack engineering, modern web and mobile application development, and high-performance digital platforms. We pride ourselves not only on technical excellence, but also on clear communication, well-structured workflows, and a collaborative approach to problem-solving. Our Core Expertise Full Stack Development: HTML, CSS, JavaScript, React, Angular, Vue, Node.js, Python, PHP, Laravel, and React Native CMS Development: WordPress (custom themes, plugins, SEO), Shopify (store setup, app integrations), Webflow (responsive design & animation) Cloud & AI Solutions: AWS, API integrations (Mapbox, Twilio, Agora), AI systems (GPT-4, chatbots, LangChain, RAG, computer vision, TensorFlow, Pytorch, OpenCV, ElevenLabs, Stable Diffusion, YOLO, and modern LLM tooling) How We Work Partnership Mindset: We work closely with clients to understand their goals, constraints, and long-term vision. Process-Driven Delivery: Clean architecture, stable code, and transparent communication at each milestone. Quality Results: Applications that are scalable, intuitive, and designed for real users. Whether you’re building a new platform, refining an existing system, or integrating advanced AI features, we’re here to support you with a thoughtful, structured, and hands-on approach. A Little About Me Outside of work, I’m a big fan of classic rock and heavy metal, FIFA matches, and spending time with my two daughters (the best part of my day). Feel free to reach out- I’m always happy to discuss your project and explore how we can help bring it to life.

AI, mobile & web your one-stop build partner from MVP to scale. ➤ 15 yrs on Upwork ➤ $3M+, 504 projects, ➤ 100% JSS, ➤ Top Rated Plus. As Director of Operations at Space-O, I run a 250-engineer studio: design, dev, AI, QA, PM under one roof. ▸ ONE STOP — WHAT'S UNDER MY ROOF • AI strategy, RAG, voice agents, LLM integration, fine-tuning, observability • Mobile iOS + Android via React Native or Flutter; native Swift / Kotlin when the brief demands it • Web + SaaS — Next.js frontends, Node.js / Laravel / FastAPI backends, multi-tenant data • Design — Figma to production code, App Store features, motion and design systems • QA + DevOps + 30- 45 days post-launch warranty included, never upsold One contract, one team, one accountable lead. No vendor coordination tax. ▸ WHAT I'VE SHIPPED • 25+ OpenAI / Claude products , voice agents (Vapi, Retell, LiveKit), RAG over private docs, Figma-to-code AI, semantic search, multi-agent systems with tool use • 5 unicorn-stage apps a $1.2B-funded delivery app with 50M+ installs across 29 countries; A $100M+ MENA delivery platform with 10M+ users; an $11M-funded India fintech; KSA's top luxury e-commerce brand (5M+ users, Lionel Messi as ambassador); a $100M+ India job marketplace serving 50M+ users • Healthcare EMR live in 10+ US states, 15M+ patient charts ▸ STACK I LEAD WITH IN 2026 • AI / ML: OpenAI GPT-4o, Anthropic Claude, Gemini, RAG (LangChain, LlamaIndex), embeddings, voice (Vapi, Retell, LiveKit, ElevenLabs, Whisper), Stream Chat • Mobile: React Native, Flutter, Swift, SwiftUI, Kotlin, Jetpack Compose, Expo, Fastlane • Backend: Node.js, NestJS, Laravel, Python (FastAPI, Django), Go, Supabase, Firebase • Frontend: Next.js, React, TypeScript, Tailwind, Tanstack Query • Data: PostgreSQL, MongoDB, Redis, Elasticsearch, Pinecone, Weaviate • Cloud + DevOps: AWS (EKS, Lambda, S3), GCP, Azure, Vercel, Docker, Kubernetes, Terraform, GitHub Actions, Sentry • Payments: Stripe, RevenueCat, Apple Pay, Google Pay, PayPal ▸ HOW I WORK • You get a Director, not just a coder, I own architecture, scoping, milestone QA, and weekly demos. The build itself is run by senior engineers from my team. • Fixed-price milestone delivery most projects close in 3–5 milestones. • Discovery Sprint available testable artifact in 5–10 days, 100% credited toward Phase 1 if you continue • I audit before I quote if v1 was built in Replit / Bubble / no-code, or a previous team left a codebase that won't extend, I'll read the code first and quote second ▸ WHO I BUILD FOR → Founders pre-launch (AI / mobile / web MVP in 8–14 weeks) → Seed-stage teams scaling to 50K–500K users → Growth-stage SaaS products adding AI or commissioning a senior engineering audit before their next round → Enterprises needing a long-term, one-stop build partner with ISO 27001 controls and HIPAA-aware delivery.

I help SaaS companies, startups, and agencies launch fast, conversion-focused websites and web apps, then make them unmissable with motion and premium brand design. 190+ projects delivered, 100% Job Success, and $200K+ earned on Upwork. Most clients have to hire a developer and a designer separately. I do all to a professional standard, so your product ships cohesive, on-brand, and on-time; one reliable partner instead of multiple handoffs. Web Design & Development (my core) 1. Custom websites & marketing sites - Webflow, WordPress, Shopify, Wix 2. Web apps & SaaS dashboards - React, Next.js, Node.js, Typescript 3. Responsive UI/UX design in Figma 4. High-converting landing pages & design systems Also an expert in: 1. Motion Graphics - brand reveals, explainers, product & social animations 2. Brand Identity - logos, visual systems, marketing collateral, pitch decks 3. Game UI/UX - HUDs, menus, in-game screens & asset kits Why clients choose me: ✔ 190+ projects delivered · 8,000+ hours · 100% Job Success · Top Rated · $200K+ earned ✔ Design and development in one partner - no handoff gaps ✔ Strategy-led work, not just aesthetics ✔ Fast turnaround, clear communication, reliable long-term Industries: SaaS & Technology · AI & Automation · FinTech · E-commerce · Real Estate · Healthcare · Education · iGaming Tell me what you're building - website, web app, animation, brand, or game UI, and I'll tell you exactly how I'd approach it.

I am Sabyasachi Saha, an AI Agent, Full-Stack AI, Workflow Automation, LLM, and SaaS Developer. I work as an individual consultant and hands-on technical architect, backed by my experience as the CEO and Chief AI Scientist of Techno Exponent. I have completed my PhD from SSBM Geneva with a research focus in Generative AI and Sentiment Analysis. With 20+ years of experience in the IT industry, I help startups, enterprises, and growing businesses build intelligent, scalable, and automation-driven digital products. My major focus is on AI agents, LLM-based applications, workflow automation, SaaS platforms, full-stack application development, data engineering, and analytics. I combine strong technical knowledge with business understanding, so I can support projects from idea validation, architecture planning, development, integration, automation, and long-term scalability. I founded Techno Exponent in 2011, and since then, we have helped global businesses with digital transformation, AI solutions, automation platforms, SaaS products, enterprise applications, web/mobile apps, and complete IT solutions. As an individual professional on Upwork, I personally bring leadership experience, AI architecture knowledge, hands-on development understanding, and product-focused thinking to every project. I can help you with: ✅ AI Agent Development ✅ LLM-Based Applications ✅ ChatGPT / OpenAI / Claude / Gemini Integration ✅ RAG Systems and Vector Databases ✅ AI Chatbots and Voice Bots ✅ Workflow Automation ✅ Business Process Automation ✅ SaaS Product Development ✅ Full-Stack Web Application Development ✅ Data Engineering and Data Analytics ✅ AI-Powered Dashboards and Reporting Systems ✅ CRM, ERP, and Third-Party API Integrations ✅ MVP Development and Product Modernization I have worked across multiple industries, including healthcare, education, e-commerce, real estate, fintech, logistics, transportation, recruitment, food delivery, dating platforms, blockchain, and enterprise automation. My experience includes AI chatbots, AI calling bots, CV screening platforms, AI interview systems, RAG-based knowledge assistants, analytics dashboards, CRM automation systems, workflow automation platforms, SaaS products, and scalable full-stack applications. My technical expertise includes: ✅ AI/ML: Generative AI, NLP, LLMs, AI Agents, RAG Systems, LangChain, LlamaIndex, Hugging Face, OpenAI, Claude, Gemini, Computer Vision, Sentiment Analysis, Predictive Analytics ✅ Automation: Workflow Automation, Business Process Automation, AI-Powered Automation, n8n, Make, Zapier, CRM Automation, Email Automation, Lead Automation, API Automation, WhatsApp Automation, Voice Bot Automation ✅ Data: Data Engineering, ETL Pipelines, Data Analytics, Business Intelligence, AI-Powered Dashboards, Reporting Systems, Data Visualization, Data Warehousing, Real-Time Data Processing ✅ SaaS: SaaS Product Development, Multi-Tenant Architecture, Subscription Models, Role-Based Access Control, Admin Panels, User Dashboards, API-First Architecture, Scalable Cloud-Based Platforms ✅ Full-Stack Development: Python, FastAPI, Node.js, Express.js, Django, Flask, Java, PHP, Laravel, React.js, Next.js, Angular, Vue.js, TypeScript, JavaScript ✅ Databases & Cloud: PostgreSQL, MySQL, MongoDB, Firebase, Redis, Vector Databases, Pinecone, Chroma, Weaviate, AWS, GCP, Azure, Docker, Kubernetes, CI/CD ✅ Integrations: Stripe, PayPal, Twilio, WhatsApp API, SendGrid, Google APIs, CRM/ERP Integrations, Payment Gateways, Custom API Development Achievements: 🏆 Awarded “Most Influential Young Leaders 2021-22” by AsiaOne and Economic Times 🏆 Techno Exponent recognized as Times Leading IT Company 2022 🏆 Techno Exponent recognized as Most Customer-Centric IT Company 2022 🏆 Techno Exponent recognized as Leading App Development Company of the Year 2023 When working with me, you get more than a developer. You get a technical partner who understands business goals, product architecture, AI implementation, automation strategy, scalability, and execution. My goal is simple: to help businesses turn ideas into intelligent, scalable, and revenue-focused digital products. If you are looking for someone who understands AI, automation, SaaS, full-stack development, data, and business execution, I would be happy to discuss your project and help you build the right solution.