Full Stack Developer | 5M software End-Users Impacted | $200K+ Total Earnings | Expert-Vetted (Top 1% Upwork) | 31 Projects | 100% Job Success | 12+ Years on Upwork | 5339+ Hours Worked | TOP RATED PLUS – Top 3% of companies | 16+ Countries Covered 🙈 “Can we just quickly fix this?” 🙊 “It’s probably just a small change.” 🙉 “Let’s ship first and think later” I am a CEO and Business Manager at Peppernode. I create systems where architecture and decisions matter because mistakes cost more than doing it right. Call me Illia. 🏆 MY ACHIEVEMENTS: 15+ years and 30+ successful products as a Full Stack Developer, delivering SaaS platforms, MVPs, AI-powered solutions, scalable Web Applications; 12K+ dental professionals and 20K+ healthcare users supported through Healthcare Web Applications and HIPAA-compliant platforms built as a React Developer; 35–45% faster feature delivery, improved application stability, and scalable SaaS platforms built as a React Full Stack Developer; 20–30% higher user engagement as a React Developer, building web applications used by 5M+ end users worldwide. React Native App Developer delivering cross-platform mobile apps. Python Developer building scalable backend systems and APIs for SaaS products; 31 successful projects delivered to businesses across 16+ countries, serving more than 5M+ end users worldwide; 100% Job Success, $200K+ earned, and 5,339+ hours worked on Upwork, with proven experience designing scalable applications, validating product strategies, and making the right technical decisions from day one. 🚀 SaaS Development As a Full Stack Developer React, I build 30+ modern SaaS platforms with React, Python, Firebase, and scalable architectures. As a React Developer Firebase, I've delivered 20+ SaaS projects, building web applications with connected frontend and backend systems. 📱 React Native App Development As a React Native Developer and React Native App Developer, I build cross-platform applications for iOS and Android. I've delivered 20+ React Native Mobile solutions for startups and established businesses, focusing on performance, reliability, and long-term scalability. As a React Native Developer Expo specialist, I take products from MVP to production, building intuitive user experiences with clean, scalable codebases. As a React Native App Developer, I've built mobile applications used by businesses in 10+ countries. As a Full Stack Developer React Native and Mobile Developer, I've contributed to 20+ mobile products, building connected mobile ecosystems powered by scalable backend services. My work includes React Native, Expo, mobile MVP development, enterprise applications, API integrations, authentication, App Store and Google Play releases, performance optimization, and long-term product support. 🍽 Restaurant Ordering Systems As a Full Stack Developer React, I've built restaurant ordering systems serving thousands of daily users, helping restaurants automate ordering and payments. My solutions have improved operational efficiency by an average of 32% through workflow automation, POS integrations, and real-time order management. As a React Native Mobile Developer, I've developed customer and staff applications that streamline restaurant workflows. As a Python Developer, I build reliable restaurant platforms with scalable architectures, secure payment integrations, POS connectivity, inventory synchronization, cloud-based backend services, and high-performance APIs. As a React Developer, I have improved user engagement by 20–30% through faster interfaces, intuitive user experiences. 📌 Existing Product Modernization As a Full Stack Developer React, I've modernized 20+ existing applications, refactoring unstable codebases, reducing technical debt, and expanding functionality without sacrificing maintainability. 🤖 AI Integrations As a Full Stack Developer AI, I've built 20+ AI integrations using OpenAI API, Gemini, and LangChain, reducing manual work by up to 70% and enabling AI Accelerated Development delivering projects up to 2× faster. My work includes AI-powered features, conversational chat interfaces, AI agents, prompt engineering, and custom LLM integrations that improve productivity. 🔧 Tech Stack As a Full Stack Developer React Node and Python Full Stack Developer, I've delivered 31 production-ready software products using modern web technologies, helping clients achieve 5–8 weeks shorter MVP to Pilot Launch and 35% fewer bugs through Existing Codebase optimization, Productionise work. My frontend stack includes React, React Native, Expo, TypeScript, JavaScript, HTML5, CSS3, Tailwind As a Python Full Stack Developer Flask specialist, I build scalable backend systems for 5M+ users, reducing API response times by 35% using Python, FastAPI, Django, Node.js, REST APIs, PostgreSQL Looking for a React Developer, React Native Developer, Full Stack Developer React Node, Python Full Stack Developer to build your next SaaS platform, web application?

Your app started in Claude Code, Lovable, or Replit. Now it needs to actually ship. That's my lane - I take AI-built prototypes to production and build MVPs from scratch. 9 years on Upwork · 100 projects · $200K+ earned · 100% Job Success What clients hire me for: - Taking AI prototypes to production: security and auth fixes, refactoring, Stripe payments, deployment - Full stack development end to end - MVPs and SaaS: React/Next.js + Node.js/Express/Nest + Supabase/MongoDB - AI integrations: OpenAI/Claude APIs, fal.ai for image gen, AI search, generation pipelines, workflow automation - Figma-to-production front-end builds and e-commerce product configurators Not sure what state your codebase is in? Start with a fixed-price audit: a written report on what's solid, what's broken, and exactly what it takes to launch. Selected work: - Customizer.pro - my own product-personalization platform for Shopify/Etsy/Amazon (Vue/Nuxt, Node.js) - SaleSpy - competitor-analytics SaaS, built solo from idea to launch in two months - Kazka - AI-built story app taken to production (React/Next.js, Clerk, Paddle, fal.ai) - Songbook - music platform for worship teams: chords, multitracks, sheet music You get clean code in Git, Loom updates, and async-friendly communication. If that sounds like your project, message me. Best, Alexey Golovin “Alexey was an absolute pleasure to work with. As a visual designer I have a very high level of expectation for the appearance of a web piece, and Alexey faithfully captured my vision. Not only that, but he optimized the interactions and back end performance to create an end product that blew my expectations away. He is an integral team member who brings so much expertise and attention to detail, and I could not imagine our project going as well without his involvement.” - Sian F. “As always, Alexey went above and beyond what was requested of him to deliver a great final product. Easy to communicate with, and always a pleasure to work with.” - Joe R. Keywords: React, Next.js, Node.js, TypeScript, Supabase, PostgreSQL, MongoDB, Tailwind, Claude, Claude Code, Claude API, Anthropic API, MCP, OpenAI, AI integration, n8n, AI developer, AI agents, Lovable, Replit, Cursor, Codex, vibe coding, MVP, SaaS, full stack developer, react developer, next.js developer, node.js developer, frontend developer, front-end developer, front end developer, back-end developer, back end developer, full-stack developer, fullstack, backend developer, Web Application Audit, production, Node, Express, ExpressJS, NextJS, Mongo, Postgres, PostgreSQL, JavaScript, REST API, front-end development, Vue, Nuxt

✅ 50+ SaaS projects successfully completed, 14+ MVP done 2️⃣8️⃣ of them in the payments and fintech space - including PSP platforms, payment orchestration systems, hosted fields & checkout flows, and trading platforms for fintech clients. Hands-on integration experience with Stripe, Apple Pay, iDEAL, PayPal and other major payment gateways. 🏆 TOP RATED PLUS | In Top 3 Laravel Developer | Payment Systems Expert | AI-Powered SaaS Specialist | PHP Laravel Developer 💠 7+ Years Experience | Senior Architect specializing in scalable backend architecture and high-load PHP Laravel Developer ecosystems 💠 AI Strategist | Building AI-powered and AI-assisted workflows, integrating AI solutions for custom SaaS products and No-Code/Low-Code integrations 💠 Rapid MVP Delivery | From concept to production-ready launch in 4-6 weeks as a Full Stack Laravel Vue specialist 💠 Proven Track Record | 100% Job Success with 5-star feedback from enterprise and startup clients in the USA, Europe, and the UAE Hello to my future clients and collaborators! I'm Mike - a Senior Full Stack Laravel Vue Developer and Laravel Developer. $10M+ in monthly transaction volume secured as a Senior Full Stack Laravel Developer and PHP Laravel Developer specializing in Fintech, Payments and iGaming platforms built on Laravel and Vue.js. $2,500+ saved per engagement and 25% fewer development hours as a Full Stack PHP Developer and Senior PHP Developer who cut a merchant portal API build from 232 to 176 hours through AI-accelerated delivery. 532,000 to 80,000 lines of code, 5,000+ active users on an EdTech platform rebuilt over 3+ years by a Laravel Developer, with AI-powered lesson summaries and real-time conversational practice. 50,000+ transactions processed daily through a payout microservice built by a Laravel Developer for a Netherlands-based payments company. 28% faster onboarding, dual-sided CRM, real-time matching and billing delivered as a Full Stack Laravel Developer on a staffing/recruitment ERP platform, with a companion Mobile App Developer build for Android users. 52% lower manual reporting workload achieved as a Website Design specialist building a client portal and reporting dashboards for a marketing/SEO agency. 70% faster integration cycles through a unified AI adapter architecture designed by a Laravel Full Stack Developer on an AI-powered video content platform. As a Laravel Developers' collaborator, I treat every Laravel build as a long-term business asset, not a one-off delivery. ✅ WHERE I DELIVER As a PHP Laravel Developer on Laravel Vue.js - 15+ SaaS and marketplace systems with clean architecture, secure APIs and responsive interfaces across Fintech, EdTech and real estate platforms. As a Full Stack Laravel Developer on Livewire and Filament - 10+ admin panels and back-office systems with role-based access and audit logging. As a Full Stack PHP Developer on Stripe and Stripe Connect - subscriptions, invoices and webhook-driven systems processing thousands of transactions daily. As a React Node specialist integrating AI services - OpenAI API, custom AI agents and content-generation pipelines built into production Laravel platforms. As a WordPress Developer and a Ruby on Rails pro - additional delivery paths for content-driven sites and rapid prototyping projects. As a Python Full Stack Developer, plus Android and Mobile App Developer with Flutter Laravel - cross-platform apps built on a Laravel Vue backend. ✅ INDUSTRY IMPACT Fintech, Payments, PSP Integrations - 50,000+ daily transactions and payout automation delivered as a Full Stack Laravel Developer maintaining reliable reconciliation. EdTech, AI-Powered E-Learning - 5,000+ users on a platform rebuilt from the ground up, with AI Zoom summaries and spoken-English models integrated by a Laravel Developer. Real Estate Marketplaces - Laravel, Laravel Vue and Stripe Connect powering a two-sided marketplace with secure checkout and payment splitting. Staffing and Recruitment ERP/CRMs - dispatch, billing and shift verification modules cutting onboarding time by 28% as a Full Stack Developer React. Marketing/SEO Agency Portals - client-facing dashboards cutting manual reporting work by over half as a Senior PHP Developer. AI-Powered Content Platforms - video generation engines, AI content assistants and adapter architectures cutting new AI-provider integration time by 70% as a Full Stack Laravel Developer. ✅ HOW I BUILD 15+ SaaS products as a Laravel Developer: PHP Laravel, Laravel Livewire, Filament, Symfony, Laravel Vue.js, Alpine.js, Tailwind CSS, Bootstrap. 10+ payment and integration systems as a Full Stack PHP Developer: Stripe, Stripe Connect, REST and GraphQL APIs, WebSockets, PHP MySQL, PostgreSQL, MariaDB. 8+ AI builds as a PHP Laravel Developer: OpenAI, custom AI adapters and automated content pipelines. 12+ admin and back-office systems as a Laravel Full Stack Developer: role-based access, audit trails, PDF reporting and analytics.

Top Rated Plus, top 3% of talent on Upwork. Full Stack, SaaS and AI Development. Over 90% of the products I build ship to production, and most are still live and in daily use today. ABOUT ME 8+ years and 40+ delivered products as a Full Stack Developer (React, Node) across SaaS platforms, AI powered apps, MVPs, and web application delivery. $4M+ in client revenue impact and 60,000+ active users across the products I have built as a Full Stack Developer React Node. 20,000+ active users on a SaaS platform where Frontend React Developer work lifted engagement by 22%. 2,400+ completed orders and 480+ registered customers on an ecommerce and CRM platform MVP as a Full Stack Developer React Node. 10,000+ users on a healthcare web application where React Developer ownership cut admin workload by 40%. 15,000+ daily AI prompts processed on an AI powered platform as a Full Stack Developer React Node, cutting manual resolution time by 40%. 90% faster order processing and 80% lower manager workload through workflow automation as a Frontend React Developer. Top Rated Plus with a 100% Job Success Score across every contract, end to end ownership from backend architecture to production UI. WHERE I DELIVER As a Frontend React Developer, 20+ systems with UI development, dashboards, and responsive builds across SaaS platforms, booking platforms, and ecommerce websites. As a React and Next.js Developer, 15+ launches with 30% faster iteration through design to code and component development. As a Full Stack Developer React Node, 25+ end to end builds with backend APIs, data architecture, and secure scalable systems from early stage MVP to live SaaS platform. As a Full Stack Developer React Node, AI powered product builds: chatbots, RAG assistants, and automation with OpenAI, Claude API, FastAPI, and vector databases. As a Full Stack Developer, 12+ backend heavy products with 28% lower delivery risk on Node.js and Python. As a Full Stack Developer React Node, 6 to 18 month engagements as a long term development partner: scale existing platforms, professionalize, review, improve, and launch. INDUSTRY IMPACT SaaS Platform, B2B, Two Sided Marketplace: 50,000+ active listings, 35% higher conversion, and $2M+ in monthly transaction volume as a Full Stack Developer React Node. Healthcare, Clinic Management SaaS, Telehealth: 10,000+ active users, 500+ daily appointments processed, and 15% fewer patient no shows as a Frontend React Developer maintaining 99.9% uptime. AI Powered: 5+ products deployed with custom AI agents, chatbots, and RAG systems on OpenAI, Claude API, and FastAPI, processing 15,000+ daily prompts and cutting manual resolution time by 40%. Logistics, ERP, Internal Workflow: up to 12 hours saved per order cycle, 30% faster reporting, and 40% fewer data entry errors across 5+ regional hubs as a Full Stack Developer React Node. Fintech, LegalTech, PropTech MVP: 40% higher retention over 6 months and role based access for 5,000+ users through Frontend React Developer work. Clients typically work with me when they need: - a Full Stack Developer who can own frontend and backend - a SaaS Developer who understands long-term scalability constraints - a Backend Developer experienced with real production systems - mobile app developer and React developer experience as a software developer - backend services built with Node.js or Python by an experienced Python developer - web applications with complex workflows and business rules from a senior web developer - API-driven architectures and third-party integrations - SaaS platforms designed to support growth, analytics and SaaS marketing data needs - MVPs that can realistically evolve into long-term SaaS products HOW I BUILD Frontend as a React Developer: React, Next.js, TypeScript, JavaScript, Tailwind CSS, Redux, HTML5, CSS3, responsive design, real time UI. Full stack and backend as a Full Stack Developer React Node: Node.js, Python, ASP.NET, PostgreSQL, MySQL, MongoDB, Redis, REST API, WebSockets, Stripe, payment, auth, and third party API integrations. AI as a Full Stack Developer: OpenAI, Claude API, FastAPI, RAG, vector databases, LangChain, AI agents, chatbots, and workflow automation. Also across the stack: Vue, Supabase, Firebase, Docker, AWS, Vercel, CI/CD, software architecture, and end to end delivery from MVP to live platform.

A slow, hard-to-update site kills more sales than bad design ever will. I'm the Full Stack Developer who fixes both fast, scalable builds from React to Wordpress, and a Web Developer you don't have to explain things to twice. ABOUT ME As a Full Stack Developer with 10+ years in the industry, I help businesses launch, scale, and modernize their online presence. Whether you need a Wordpress Developer for a pixel-perfect Elementor build, a Web Developer for a custom coded platform, or a Full Stack Developer to own a project end-to-end, you get the same standard: clean code, fast performance, and dependable communication. That standard is reflected in - 40+ Total Jobs, - 100% JSS Top Rated Plus status, and 5-star feedback across every engagement. FULL STACK DEVELOPER FOR SAAS, MVP & WEB APPLICATIONS As a Full Stack Developer, worked across 20+ SaaS platforms, MVPs, AI-powered tools, and web applications, taking projects from idea to production. As a React Web Developer, I build frontend experiences that hold up at scale, and as a Full Stack Developer I'm just as comfortable owning the backend, data layer, and integrations that keep a product reliable as it grows. Whether the job is a fresh build or improving an existing codebase, my focus stays on clean architecture, fewer bugs, and a faster path from MVP to launch. WEB DEVELOPER, WEBSITE DEVELOPER & WEBFLOW DEVELOPER As a Web Developer and Website Developer, I build responsive, high-performing sites whether the stack is Wordpress, Webflow, or custom React. As a Webflow Developer, I combine visual design control with clean semantic code. My Web Design process starts with your goals and ends with a Wordpress Website or custom site that actually converts. FRONT END & FULL STACK DEVELOPMENT As a React Developer and React Web Developer, I developed 40+ - UI, dashboards, and responsive interfaces that feel effortless to use. As a Front End Developer, I focus on clean component architecture and conversion-focused Web Design. As a Full Stack Developer, I build 20+ backend-heavy products when the project calls for it. As an AI Full Stack Developer, I integrated OpenAI, Claude API, and FastAPI to add real AI capability, not just a chatbot bolted on top for 10+ projects This Full Stack Developer and AI Full Stack Developer range means one partner can cover both your frontend polish and backend intelligence. WORDPRESS DEVELOPER & ELEMENTOR SPECIALIST As a Wordpress Developer, I made over 50 - fast, responsive, fully editable Wordpress Website projects using Elementor, Wordpress Divi, and Avada. My Elementor Web Developer workflow covers Figma to Elementor conversion and full Woocommerce Elementor store builds. Clients hire me as a Wordpress Developer Divi expert, a Wordpress Developer UI UX specialist for clean, intuitive design systems, a Wordpress Developer API integrator for CRM and payment connections, and an SEO Wordpress Developer for architecture that supports long-term ranking growth. Search terms like Wordpress Developer Needed or Wordpress Developer Philippines often lead clients to me. Core Wordpress Elementor expertise: - Wordpress Elementor and Elementor Web Developer builds with clean structure and speed - Figma to Elementor conversions, pixel-accurate to your design - Woocommerce Elementor stores optimized for a smooth buying experience - Wordpress Divi and Avada layouts for elegant Wordpress Website design - SEO Wordpress Developer architecture, Wordpress Developer UI UX systems, Wordpress Developer API integrations INDUSTRY EXPERIENCE As a Full Stack Developer, I've worked across Marketplace and B2B platforms, Healthcare and Telehealth applications, Logistics and internal workflow tools, and LegalTech, Fintech, and PropTech MVPs, each with its own compliance, performance, and UX demands. I also bring Mobile App Developer experience with React Native and Flutter, and Shopify Developer work for clients who need a store alongside their Wordpress Developer or Elementor site. HOW I BUILD As a Full Stack Developer, my toolkit spans React, Next.js, Node.js, Laravel, PHP, and Wordpress, plus Supabase, PostgreSQL, MySQL, MongoDB, and Firebase. As a Web Developer, I also work in Webflow, Shopify, Vue.js, and Svelte when needed. Every Wordpress Developer engagement includes Elementor, Divi, or Avada with ACF for flexible content structures. WHY CLIENTS CHOOSE ME - Full Stack Developer with 10+ years of experience and 40+ completed jobs - 100% JSS Top Rated Plus status backed by 5-star feedback - Wordpress Developer and Elementor specialist for fast, conversion-focused sites - Full Stack Developer comfortable across SaaS, AI, Healthcare, E-commerce, and Marketplace platforms - Web Developer and Front End Developer with a strong eye for Web Design If you're looking for a Full Stack Developer who treats your project like their own, from Wordpress to AI, send me a message and let's start building.

⭐️⭐️⭐️⭐️⭐️ TOP RATED PLUS | Front End Developer | React Developer | Full Stack Developer | Next.js Developer | AI Developer- building scalable, production-grade products used by thousands of users 🚀 🔥 50 COMPLETED JOBS WITH ZERO NEGATIVE FEEDBACK ⭐️ Consistent 5-STAR REVIEWS & LONG-TERM CLIENT PARTNERSHIPS 💼 $200K+ earned on Upwork | ⏱ 8,300+ hours delivered | 🏆 100% Job Success Rate 🌍 40+ products shipped across 18+ countries | 🏅 15+ long-term client partnerships Building a serious product takes more than a polished UI - it takes a Full Stack Developer who understands architecture, scalability, and business impact. I'm a senior Front End Developer and Full Stack Developer with 9+ years building high-performance web apps, SaaS platforms, landing pages, and mobile apps for startups and growth-stage companies with React, Next.js, and Node.js. I keep frontend and backend tightly integrated so every decision serves the business. 📊 Impact & Metrics Products I've shipped serve 10K–100K+ monthly actives and handle 5M+ API requests/month. As a Front End Developer and React Developer I've cut load times 40–60%, lifted conversions 20–35%, and dropped bounce rates 25%+. Recent work: organic traffic +62%, TTI 2–3x faster, and a dashboard rebuild that grew weekly actives from 4K to 18K (+350%) in 4 months. 🏗 Architecture & Scalable Systems As a React Developer I design scalable component systems with Redux or Zustand; with Next.js I build hybrid rendering - SSR, SSG, ISR, API routes - tuned for performance, SEO, GEO, and AEO. As a Full Stack Developer I work in Node.js, ExpressJS, and Python (Django, FastAPI), building REST APIs across PostgreSQL, MySQL, MongoDB, and Supabase, with WebSockets, Docker, and CI/CD on AWS or Vercel cutting release times 50%+. Modular patterns reduce technical debt and bug rates 30–40%. 🤖 AI Development, Agents & Automation I build production-ready AI systems: AI Chatbots, AI Agents, AI Voice Assistants, AI Customer Support, and AI Content Generation - connected to real products, not demos. Using OpenAI GPT, Claude API, Gemini API, LangChain, LangGraph, LlamaIndex, and RAG with Vector DB, I ship multi-step reasoning pipelines, PDF/Document AI, AI Document Processing, and Recommendation Engines. I implement AI Workflow Automation, AI CRM Integration, AI Analytics Dashboards, and AI Search with RAG/CAG, MCP, and LangSmith observability - saving teams 15–25 hours/week. 📱 Mobile Development As a Front End Developer I build cross-platform apps with React Native for iOS and Android - shared logic cuts delivery time 40%. Apps shipped hold 4.5★+ store ratings. 🎨 Design-to-Code As a Front End Developer I turn Figma and Framer into pixel-perfect React interfaces with Tailwind CSS - landing pages, full websites, or redesigns. Consistent Lighthouse 95+ and LCP under 1.8s. 📈 Business-Oriented Engineering As a React Developer I've refactored unstable React codebases into maintainable systems, shipped Next.js platforms that grew organic acquisition, built Stripe subscription and marketplace flows, and handled API integration, cutting infra overhead 20–30%. One Full Stack Developer engagement took a signup funnel from 90 to 240/month (+165%) while halving server costs. ⚡ Performance & Core Web Vitals As a Front End Developer I treat LCP and TTI as real product metrics - 2–3x faster via code splitting, lazy loading, caching, and SSR/ISR. Pages from 6s+ to sub-2s, conversion +38%, bounce −25%. 🔧 Primary Stack Frontend: React.js, Next.js, TypeScript, Redux, Zustand, Tailwind CSS, SCSS, Framer. Backend: Node.js, ExpressJS, Python (Django, FastAPI), REST, GraphQL, WebSockets. AI: OpenAI GPT, Claude API, Gemini API, LangChain, LangGraph, LlamaIndex, RAG/CAG, Vector DB, MCP, LangSmith. Mobile: React Native, native Android. Infra: AWS, Vercel, Docker, CI/CD, PostgreSQL, MySQL, MongoDB, Redis, Supabase. Need a React Developer for a complex SPA or a Full Stack Developer to own the whole product? The stack flexes to fit. 💡 Data-Backed Results at a Glance ✅ 60% faster load times via Next.js rendering & caching ✅ 35% increase in conversion rates through funnel-focused Front End Developer work ✅ 350% growth in active users on a React Developer dashboard rebuild ✅ 62% lift in organic traffic via SEO/GEO/AEO-optimized SSR/SSG ✅ 50% shorter release cycles after CI/CD automation ✅ 40% reduction in mobile delivery time through shared React Native logic ✅ 30% drop in technical debt and bugs via modular components ✅ 25% lower bounce rates after Core Web Vitals work ✅ 165% more signups on a Stripe SaaS funnel rebuild ✅ 95+ Lighthouse scores with sub-1.8s LCP 🤝 How I Work Product-focused, clean architecture from day one, fast iteration without technical debt. As a Full Stack Developer partnered with 40+ founders, CTOs, and product teams, I prefer long-term partnerships. Looking for a Full Stack Developer, Front End Developer, React Developer or AI Developer who thinks in products? Let's talk.

👋 Hi there, I'm Alina! I'm a Full Stack Developer, web developer, and mobile app developer with 9+ years of commercial experience in software engineering, helping companies build scalable, secure, and high-performing digital products. My work follows ISO 9001 and ISO 27001 security standards, ensuring enterprise-level reliability. With 180+ successful projects and 20,000+ development hours, I specialize in complex Web and Mobile Application development, AI integrations, and cloud architecture. As a dedicated Full Stack Developer and Python Full Stack Developer, I help businesses automate workflows, optimize performance, and scale products using React, Node.js, Python, and AWS. Whether you need a skilled react developer or a versatile wordpress developer, I bring the technical expertise to deliver reliable systems. 🏆 Web Developer & Full Stack Developer Solutions: ✔️ 9+ years of experience as a Full Stack Developer building scalable web platforms, SaaS products, and AI-driven applications. ✔️ 180+ high-performance projects across eCommerce, SaaS, healthcare, fintech, and enterprise systems delivered as a Full Stack Developer AI specialist. ✔️ 20,000+ engineering hours as a Full Stack Developer, software engineer, and AI integrator. ✔️ Global experience across 40+ countries including the US, UK, Western Europe, and Australia. ✔️ Development speed increased by 60–70% using AI-assisted engineering workflows. ✔️ Backend and database optimization improving performance by up to 60%. ✔️ AI automation systems reducing manual operational work by up to 85%. ✔️ Cloud infrastructure improvements enabling 45% more concurrent users with reduced AWS costs. 📌 AI Systems & Automation: 🔹 Custom LLM and RAG architectures built with Python, LangChain, and vector databases by a Python Full Stack Developer. 🔹 AI chatbots and automation agents improving operational efficiency for SaaS and enterprise systems, delivered by a Full Stack Developer AI. 🔹 AI-assisted QA workflows reducing manual testing costs by 70%. 🔹 Model-agnostic LLM routing using OpenAI, Claude, and Gemini. 📌 Custom Web Development: 🔹 SaaS platforms built with Next.js, React, Node.js, and NestJS by an expert react developer and Full Stack Developer. 🔹 Secure web applications designed by an experienced web developer following ISO security standards. 🔹 Rapid MVP development using AI-first engineering approaches. 🔹 Custom CMS and scalable platforms implemented by a skilled wordpress developer. 📌 Backend Architecture & Cloud Infrastructure: 🔹 High-performance cloud architecture using AWS, Docker, and modern DevOps practices. 🔹 Database optimization with PostgreSQL and Supabase improving query speeds by 60%. 🔹 Microservices and CI/CD pipelines increasing system scalability. 🔹 Automated billing and internal automation systems built by a Python Full Stack Developer. 📌 Mobile & Cross-Platform Applications: 🔹 Cross-platform mobile applications using React Native and Flutter. 🔹 Backend-to-mobile data synchronization reducing latency and improving UX. 🔹 AI-powered recommendations and secure payment integrations. 📌 Scalable Architecture & System Optimization: 🔹 High-availability cloud infrastructure for scalable applications. 🔹 Advanced dashboards and admin panels using React, Tailwind, and modern UI frameworks. 🔹 Server-side rendering and caching strategies improving performance and scalability. ✅ 60–70% faster development through AI-assisted engineering workflows. ✅ ISO 9001 & ISO 27001 aligned development standards. ✅ 30% lower server costs through optimized backend architecture. ✅ Advanced AI integrations (GPT, Claude, LangChain) delivered by a Full Stack Developer AI. ✅ Rapid MVP delivery in 2–3 months by an experienced Full Stack Developer, react developer, and web developer. Looking for a Full Stack Developer | Full Stack Developer AI | Python Full Stack Developer who can design scalable systems, build reliable architecture, and turn ideas into production-ready products? Let’s connect! ☎️ 22.06.2026

I’m a full-stack developer with a strong focus on creating responsive, user-friendly web applications. On the frontend, I work confidently with React.js, Redux, HTML, and CSS, delivering clean and maintainable code. On the backend, I use Node.js with Express.js or Nest.js to build robust and efficient APIs, and I’m experienced in integrating databases like MySQL for full-stack functionality. I enjoy turning designs into functional products using Figma and translating ideas into smooth, intuitive user experiences. My workflow includes modern development practices, version control with Git, and a constant focus on code quality. I work on projects daily, continuously improving my skills, exploring advanced patterns, and staying up to date with current trends — ready to bring value from day one.

Hello, I am Oleksandr! 🔥I build AI-integrated SaaS and mobile apps for fintech, travel & hospitality, real estate and healthcare startups and established businesses. Using React Native, Python, and React, I deliver secure MVPs from concept to launch. Backed by a 65+ dev team, I ensure scalable, compliant solutions with predictable delivery and rapid iteration.🔥 🚀 I also lead a web development team, Join.To.IT from Kyiv, Ukraine, as co-founder and CEO. We have multiple Laravel developers (Senior PHP and Custom PHP MySQL), Python (Django), and JavaScript (React, Vue, React Native) developers. If your project needs a dedicated mobile app developer, we can staff that role quickly, while I stay involved as a full stack developer to keep architecture, delivery, and communication aligned. When the UI scope grows, a senior web developer can join the project while I remain the full stack developer responsible for end-to-end quality.🚀 I’m an experienced Laravel engineer, React engineer, Vue engineer, and React Native engineer with 14 years of production experience. As a full stack developer I can build backend APIs, admin panels, dashboards, and customer-facing apps, and as a web developer I pay attention to UI details that improve conversion and retention. I’ve completed a wide range of successful projects, from MVPs to large systems with long-term maintenance and continuous improvements. My skills: React React Native Software Architecture & Design Laravel Python Full-Stack Development API Development JavaScript PHP Web Application Development Node.js AWS Development MySQL Mobile App Development Django WordPress HTML5 Tailwind CSS Web Design API Integration Stack of technologies we use: ✅ HTML/CSS, Bootstrap, Tailwind ✅ JavaScript (React, Vue, Node.js, Express, AdonisJS, Nuxt) ✅ React Native for cross-platform mobile delivery ✅ API integrations (Stripe, PayPal, Twilio, TextMagic, Xero, DocuSign, Google Maps, Meta APIs, and more) ✅ API development (Laravel, Node/Express, Firebase, Python/Django, Go, REST, GraphQL) ✅ PWA (Progressive Web App) ✅ Databases: MySQL, PostgreSQL, MongoDB, DynamoDB, Elasticsearch ✅ Infrastructure: AWS, DigitalOcean, Firebase, Supabase ✅ DevOps and administration: LAMP, CentOS, Ubuntu As a full stack developer, I connect the front end, back end, and infrastructure so releases are smooth. When the scope includes native-like UX, I can collaborate with a mobile app developer without slowing down the API roadmap, and a web developer can refine UI flows while we keep the backend stable. You can hire me as a full stack developer for full ownership, or extend the team and keep me as the full stack developer leading architecture and delivery. If timelines are tight, add a mobile app developer to parallelize mobile features, and add a web developer to accelerate dashboards and front-end work. Our team has already worked in such industries as: ✅ Marketplace ✅ E-commerce ✅ Travel and Hospitality ✅ Custom ERP (Enterprise Resource Planning) ✅ ChatGPT integration (LLM model in your website front end) ✅ Automotive (car inspection, automotive ERP, car sharing, rental, selling) ✅ Social media (Tinder-like networks, short video platforms, communities) ✅ Sales (CRM systems for sales teams, retail, hospitals, sales departments) ✅ Sport (gym management systems, trainer platforms, fitness apps, club portals) ✅ Legal (document automation, AI-assisted legal processing) ✅ Healthcare (clinic management, booking, mental health software) ✅ Education (LMS, automated training, coaching marketplaces) ✅ Finance (fintech platforms, investment platforms, bank API integrations, calculators) ✅ Manufacturing (shop floor management and automation) ✅ Human resources (HRM systems) ✅ Digital marketing (Meta, Facebook/Instagram, TikTok, Google APIs, analytics) In our work history you’ll find successful products built with Laravel, PHP, JavaScript, MySQL, React, Vue, WordPress development, Web Development, Full Stack development and React Native, plus multiple systems built with Python (Django, Flask, FastAPI). I also use LLM capabilities and AI APIs (including OpenAI integrations) when they genuinely improve the product experience. We have 65 senior developers across PHP, JavaScript, MySQL, Python, Go, and Node.js. As a full stack developer, I can jump into an existing codebase, stabilize releases, fix bottlenecks, and plan the next iterations. Don't hesitate to get in touch with me for further details and fruitful work. Best regards, Oleksandr CEO, JoinToIT

Top Rated Full Stack Engineer with 11+ years of experience building SaaS products, modernizing legacy systems, and delivering production web applications with Node.js, NestJS, React, Next.js, and TypeScript. I work across the full stack, with Node.js / NestJS on the backend and React / Next.js on the frontend, and also with MERN stack. Most of my work is not just building isolated features. It is taking a product from idea to production, modernizing legacy systems, improving architecture, cleaning up hard-to-maintain logic, and making sure the system is practical to operate and extend long term. I usually help clients with custom SaaS platforms, admin panels, dashboards, CMS, API integrations, automations, and workflow-heavy applications. I also build real-time features when the product depends on fast updates and event-driven behavior. When needed, I can add LLM features, build RAG pipelines, improve retrieval and embedding strategy, and design multi-agent workflows. One example: in my Oktogon Media work history, I helped design and deliver a custom CMS for multi-site content management that replaced several legacy CMS instances. The platform was built with React, Next.js, Node.js, NestJS, MongoDB, MySQL, Docker, Kubernetes, and AWS. As part of that work, I built ETL processes to migrate production data from a commercial CMS into the new platform. The new public frontend became 4x faster and met Lighthouse criteria, while the overall system made content operations more efficient and made new site launches easier. Another example: I built a queue management product from scratch using React, PostgreSQL, and Node.js. It includes real-time updates through socket events and priority-based event logic, and the system is used at Briuta Medical Center. My strengths are a product-oriented mindset, transparent communication, and practical decision-making. I think like a product owner, not just an implementer, so I tend to spot risks early, suggest improvements, and keep the work aligned with the business goal. I’ve worked across Healthcare, EdTech, learning systems, SaaS, media/content platforms, API integrations, and automations, but I’m open to strong products in any domain. If you need a senior full stack engineer who can build, modernize, and help move the product in the right direction, feel free to reach out. If you are impressed by my experience, but can't afford the hourly price, - contact me, and we can negotiate it and find a way to deliver to you the best quality at the market.