Most AI projects fail because the infrastructure around them wasn't built to last. I'm an AI developer and Python developer who fixes that. I build RAG pipelines, AI Agent systems, and the backend architecture they need to actually run in production. When a project demands it, I bring in a trusted Python developer I've worked with long-term. Having a second Python developer and a second AI developer on call means you get the output of a full team without the overhead of managing one. 1. AI Systems That Go Beyond the Prototype As an AI developer, I design and implement custom RAG (Retrieval-Augmented Generation) pipelines that ground your LLMs in proprietary data: eliminating hallucinations and making responses genuinely useful. I build autonomous AI Agent frameworks that execute multi-step workflows without human input. Whether that means PyTorch for a custom machine learning model, TensorFlow for a deployment-optimized pipeline, or combining PyTorch and TensorFlow across different stages of the same system or computer vision for document parsing and image classification — I choose the right tool, not the trendiest one. My data scientist background means I treat model evaluation as seriously as model building. Nothing ships until the benchmarks prove it works. Every web development project I deliver goes through the same data scientist discipline: measure, validate, ship. 2. The Backend That Holds It Together A great AI developer still needs solid engineering underneath. As a Python developer, I build the infrastructure that makes AI systems reliable at scale: FastAPI and Django REST APIs, Flask microservices for lightweight integrations, Flask-based task queues for async jobs, PostgreSQL and MySQL schemas built for real data volumes, SQL queries optimized for performance, Docker-containerized services deployed through CI/CD pipelines with Git-managed version control. Data Scraping and web scraping are core to how I keep models current. I build Scrapy pipelines that continuously pull structured data from the web and load it into PostgreSQL or MySQL. That means your AI developer's models are always working with fresh information. I also use Scrapy for competitive research and e-commerce intelligence. Airtable provides non-technical stakeholders visibility into those Data Scraping pipelines, and Airtable webhooks trigger FastAPI or Django endpoints when records change. 3. Full Stack, Front to Back I'm a full stack developer and web developer, which means I own the entire delivery. React dashboards, Node.js middleware, JavaScript-heavy interfaces. I build the frontend that makes AI outputs accessible to real users. As a software engineer with web development experience across the full stack, I keep React components, Node.js services, and JavaScript logic clean and maintainable alongside the Python backend. I also have PHP developer experience. Many clients have existing PHP developer codebases, legacy CMS platforms, older systems that need to connect to modern Python APIs rather than be replaced. I know how to work with what's already there. 4. What Working With Me Looks Like You get a Python developer and AI developer in one person, backed by a trusted Python developer when the scope demands it. You get production-ready code - documented, tested, Git-managed, containerized with Docker, deployed through CI/CD. You get a data scientist mindset applied to every decision, a software engineer's standards applied to every line, a full stack developer's awareness of the full delivery chain, and a web developer's understanding that the end user is always the point. If you need an AI developer and Python developer who can take a project from first conversation to live deployment, I'd like to hear about it.

I'm Alexandra - a full stack web developer who builds scalable platforms that work reliably from day one. I help startups and established businesses launch MVPs, modernize legacy systems, and scale products with clean architecture. The result? Production-ready Laravel APIs, Vue.js dashboards, and WordPress solutions that accelerate growth and free you from messy code forever. I'm a full stack web developer with 12+ years delivering production-ready solutions. 100+ projects shipped | Top-Rated with 100% Job Success Score since day one on Upwork | Long-term partnerships with clients across the US, EU & Middle East. I lead a focused team of seasoned developers - Laravel developer specialists, Vue.js developer experts, front end developer talent, and WordPress developer veterans who ship working software on time. I'm a good fit if you need: - A full stack developer team for MVPs, admin dashboards, or CMS integrations - Laravel REST APIs with clean architecture and documentation - Vue.js front-ends with reusable components and Tailwind CSS - WordPress custom themes, plugin development, or web design overhauls - A reliable PHP developer for legacy refactoring or greenfield builds - Expert web developer guidance from concept to deployment Core tech: Laravel, Vue.js, WordPress, GraphQL, MySQL/PostgreSQL, Redis, REST API, JWT Auth, Tailwind CSS, Vuex/Pinia, Git, Docker, Elementor, PHP, JavaScript, HTML5, CSS Over the years as a full stack web developer, I've learned that the developer needs to understand the client's business goals to translate them into systems that actually move the needle. Whether you need a Laravel developer to architect a complex backend or a Vue.js developer to build an intuitive interface, my approach starts with listening. I ask questions that uncover the real problem, not just the surface symptoms. As a web developer who's seen projects succeed and fail, I know the difference usually comes down to clear communication, realistic timelines, and code that's maintainable six months from now. That's why I focus on documentation, testing, and knowledge transfer - so you're never locked into depending on me forever, even though many clients choose to keep working together for years. Team setup: I build teams tailored to your budget, timeline, and tech stack. You can lead directly or let our PM handle sprints - either way, you stay in control. Most devs have 5–7 years of hands-on experience; team leads bring 10+ years of deep industry knowledge. When projects require React, I collaborate with trusted React developer partners to ensure seamless delivery. Let's make your product better. Kind regards, Alexandra

✳️Top 1% Expert-Vetted | 140+ Completed Projects with 100% Success Rate | Clear and Pragmatic Communication I'm a Full Stack Developer and Back End Developer specializing in EdTech & SaaS Development, RAG systems, and production-ready web applications. 🟢I help founders build revenue-ready software in 2–3 months. My team provides full-cycle product delivery, including design, testing, and deployment. We hold a 100% success score across 18,000+ hours and 140+ projects. I'm a Full Stack Developer and AI Developer specializing in EdTech SaaS, RAG systems, and production-ready LLM-powered applications. As a SaaS Developer, Web Developer, WordPress Developer, and Backend Developer, I focus on platforms built for long-term growth - not throwaway prototypes - with LLM-driven features that are reliable, observable, and cost-controlled. What I Built as a Full Stack Developer, SaaS Developer and AI Developer 💡 EdTech SaaS — Adaptive SAT/ACT prep platform built with Stanford PhDs, featuring personalized learning paths and real-time student analytics. (Full Stack Developer | EdTech Developer) 💡 Enterprise RAG — SharePoint/Dynamics 365 RAG system indexing 300k+ docs for automated SOW drafting and research. (AI Developer | RAG Developer) 💡 Film Industry Search — Hybrid semantic search engine over 500k+ movie/TV scripts using dense vector indexing and keyword-aware reranking. (RAG Developer | Backend Developer) 💡 Voice POS — React Native voice-controlled POS for drive-thru grocery systems with real-time inventory sync. (Full Stack Developer | Mobile Developer) 💡 HealthTech / Fitness AI Development — Fitness platform using hybrid RAG and computer vision for sub-1.2s calorie tracking and workout generation. (AI Developer | Full Stack Developer) 💡Zendesk AI Copilot: Built an Azure OpenAI RAG pipeline for Zendesk, auto-drafting agent replies grounded in historical tickets and KB docs with PII anonymization before processing. (Full Stack Developer / Back End Developer) 💡HealthTech AI Scribe / HIPAA: Whisper + GPT-4o transcription pipeline for psychiatrists, auto-generating structured session notes with patient history, MSE, and treatment plans from live audio. (Full Stack Developer / Back End Developer) Tech Stack I work with: 🔹My AI and RAG development work covers OpenAI, ChatGPT, Anthropic, Claude, Gemini, Mistral, Llama, LangChain, Hugging Face, PyTorch, and Grok xAI — delivering production-grade Generative AI and RAG systems across industries. For Voice AI, I work with ElevenLabs, Whisper (STT/TTS), VAPI, and OpenAI's real-time audio APIs. 🔹As a Full Stack Developer, my core stack is React.js, Node.js, Next.js, TypeScript, and JavaScript (ES6+), with Python, Vue.js, PHP, HTML, CSS3, and Bootstrap across projects. 🔹On the backend, I build with Node.js, Python, Golang, and Java, using Laravel, REST APIs, background jobs, and async workflows depending on what the system needs. 🔹For mobile, I develop cross-platform iOS and Android applications using React Native, Swift, and Kotlin. 🔹CMS work runs on WordPress Development. 🔹For Cloud infrastructure I use Microsoft Azure, Google Cloud Platform (GCP), SharePoint, DigitalOcean, and Microsoft 365. 🔹My database experience covers PostgreSQL, MongoDB, MySQL, ElasticSearch, Redis, and Supabase. 🔹For communication integrations, I work with Twilio, RingCentral, Zoom, WhatsApp, Telegram, Gmail, and Outlook. 🔹DevOps and delivery relies on Git and solid software architecture and design practices throughout. 🔹On compliance, I build to HIPAA, GDPR, PCI-DSS, SOC 2, FERPA, and COPPA standards — critical for HealthTech, EdTech, and enterprise SaaS platforms handling sensitive data. How I work I take on projects as a Full Stack Developer and SaaS Developer where the technical decisions actually matter - platforms that need to scale, handle real data, and stay compliant. As a Web Developer and JavaScript Developer, I'm hands-on in the codebase. As a SaaS Developer and EdTech Developer, I think beyond features and focus on architecture, user workflows, and long-term maintainability. Working together I'll dig into the strategy behind the code and highlight the pitfalls in your plan to ensure we build the right version of your product the first time. 👉Message me to discuss your project and see if we’re a fit.

I specialize in Figma to WordPress conversion with pixel-perfect accuracy. 260+ projects delivered since 2014 for design agencies, SaaS startups, and e-commerce brands across US, UK, and EU markets. Core expertise: - WordPress development using Elementor Pro, Gutenberg blocks, and custom themes - Advanced Custom Fields (ACF) for dynamic content architecture - WooCommerce implementation for e-commerce sites - Responsive web design optimized for mobile, tablet, and desktop - Page speed optimization achieving 90+ Google Lighthouse scores - Cross-browser compatibility (Chrome, Safari, Firefox, Edge) - WCAG accessibility standards for inclusive design Recent work includes custom WordPress themes for SaaS landing pages, multi-page corporate websites with ACF integration, and WooCommerce stores with custom product layouts. All builds include performance optimization, SEO-friendly structure, and mobile-responsive design.

Need a mobile app built that holds up after launch? I lead mobile app development that ships production-ready iOS and Android apps that survive real users - several are live on the App Store and Google Play right now. I'm Oleksandr, founder and lead engineer at Kultrix, an AI and Mobile App Studio, working from Lviv. Most of our work is React Native mobile app development, plus the AI features and backend that make an app actually useful. I run engagements as a long-term technical partner, not a vendor you chase for updates - which is why several engagements have run 16 months to 4+ years. You get senior engineering ownership from first call to store release: clear scope, milestone-based delivery, honest timelines, and a lead who is accountable for the result. As founder and lead engineer, I make sure the mobile app development gets done right, not just fast. WHAT WE BUILD - Full mobile app development in React Native and Expo, from idea to store release - a cross-platform iOS and Android app from one codebase, typically a launched MVP in 6-10 weeks. With a senior React Native developer leading, we cover MVP development, App Store and Google Play submission, and everything in between. - AI integration inside mobile apps - chat, image and vision analysis, and conversational voice (OpenAI and Anthropic Claude), already shipped in live AI mobile apps. Clean API integration so the AI feature feels native, not bolted on. - Rescue and refactor of React Native apps that broke under real users - performance, crashes, and stability work to get an existing app back to store-ready. - Backend when your app needs more than screens: Node.js, NestJS, Python and FastAPI, PostgreSQL, MongoDB, Firebase, and Supabase (including auth and RLS). WHO IT IS FOR - Starting from scratch: a clear path from idea to a launched MVP in 6-10 weeks, built by a team that has shipped to both stores. - Already have an app: mobile app development help with new features, performance, and stability - whether you need an iOS developer, an Android developer, or both. - Want to add AI: a chat, vision, or voice feature shipped into your live cross-platform app through careful AI integration, scoped so it ships fast and stays maintainable. HOW WE WORK You talk to the people building your app, not a sales layer. We agree on scope and milestones up front, you see working builds early and often on TestFlight and internal tracks, and you get honest status instead of silence. When something is harder than estimated, you hear it early - with options, not surprises. The goal is a stable app you can grow on, and a codebase your next mobile app developer can read without a rewrite. VERTICALS WE KNOW We have shipped mobile app development work across health and wellness, nutrition, and fitness (calorie tracking, meal analysis, AI coaching), fintech and Web3 (payments, Plaid, Polygon on-chain apps), SaaS (Stripe billing and dashboards), and internal tools and logistics (warehouse and operations systems). If your app lives in one of these spaces, we have built and launched something close to it. RESULTS - An AI nutrition tracker - React Native meal and calorie analysis with Anthropic Claude and OpenAI - live on both the App Store and Google Play, owned end to end (mobile, API, and admin). - An AI fitness app on a Python and FastAPI backend with OpenAI, live on the App Store and Google Play. - A conversational-voice health app built with React Native, Expo, and Claude. - A Web3 scratch-card app on Polygon with Plaid integration, live on Google Play, plus a daily-quotes app on the App Store. - A warehouse operations system that runs 4x faster for 100+ employees. - Long-term mobile app development engagements kept for 16+ months and 4+ years - the clearest signal that this work lasts. OUR STACK React Native, Expo, TypeScript for cross-platform iOS and Android; Node.js, NestJS, Python and FastAPI, PostgreSQL, MongoDB, Firebase, and Supabase on the backend; Stripe, in-app purchases, push notifications, and WebSockets for real product features; and AI APIs (OpenAI and Anthropic Claude) for chat, vision, and voice. This is the full toolkit for modern mobile app development and AI integration, from first commit to a stable app on the App Store and Google Play. Send me your idea or your existing app and you will get back a clear, honest breakdown - what to build first, what can wait, and a realistic timeline for the mobile app development. No pressure, no jargon, just a straight answer from the lead who would own the work. Oleksandr - founder and lead engineer, Kultrix (AI and Mobile App Studio).

If you need a senior full stack developer who ships production-ready code on time, you are in the right place. As a web developer and react developer with 5 plus years of commercial development, I build platforms that scale and deliver results. Get in touch today and let's start your project I am a full stack developer and AI developer in React, Next.js, Node.js, TypeScript, and Python. As a full stack developer I cover front end developer work in React, backend API engineering, database architecture, and AWS cloud. As a full stack developer I work with startups and enterprise teams from MVP to full-scale SaaS with features like analytics, admin panels, and billing. Whether you need a web developer for a landing page or a full stack developer for a complex platform, I deliver complete solutions from architecture to launch. I am a full stack developer with fullstack products across SaaS, healthcare, analytics, trading, and digital commerce As a react developer I build fast, interactive applications in React, Next.js, and JavaScript with TypeScript. My work as a front end developer covers Figma-to-code implementation, dynamic UI, web design, and Tailwind CSS. As a web developer and front end developer my Core Web Vitals score 90 to 95 plus. I am a react developer skilled in the MERN stack, GraphQL, REST, WebSocket, and front-end browser extension. I work as a react native developer and mobile app developer delivering cross-platform apps on secure backend services. As a full stack developer and react developer I lead frontend from simple landing pages to complex interactive portals As an AI developer I integrate LLM APIs including OpenAI, Claude, and custom LLM solutions into production apps. My work as an AI developer includes ai-powered chat, AI agents for sales automation, ai-driven n8n workflows, smart data pipelines, and bot creation. As a full stack developer and AI developer I architect backend systems using FastAPI, Django, Node.js, and NestJS connected to React front end interfaces. I am an AI developer bringing real power, game-changing automation, and innovative solutions to healthcare, trading, and enterprise products. As a python developer I build data scripts and backend services. As an AI developer and react developer I work from core backend fabric to a pro UI, setting the right vibe for your brand As a react developer and front end developer I translate Figma designs into clean, secure interfaces. As a full stack developer and front end developer my work covers PDF generation, embedded video, dynamic form systems, signup flows, Google and Meta ads tracking, content management, and ui/ux. As a front end developer I have delivered conversion-optimized sites, interactive dashboards, and portals. As a web developer I review and fix existing code, optimize performance, and focus on clean systems I am a wordpress developer with expertise in custom plugin development, PHP, Elementor, CMS setup, WooCommerce, and template customization. As a wordpress developer I handle migration, web design, and maintenance for business websites and online stores. I work as a web developer across Shopify, Webflow, Bubble, Softr, Xano, Replit, and GoHighLevel, making me a versatile web developer for any tool. As a full stack developer I set up and extend ERP platforms — ERPNext, Odoo, and Dynamics — connecting them to custom front-end applications As a full stack developer my integration work covers HubSpot, Salesforce, SharePoint, Twilio, WhatsApp, Stripe, and n8n workflow automation. I am a full stack developer who has built marketplace systems, crypto and web3 blockchain apps, and trading platforms. As a full stack developer and consultant I lead products from MVP to enterprise scale. Tech stack as a full stack developer: React, Next.js, Node.js, NestJS, FastAPI, Django, Laravel, Java, Rust, Python, PHP, PostgreSQL, Supabase, AWS, Docker, CI/CD, REST, GraphQL, gRPC, WebSocket I am a full stack developer bringing debugging expertise, code review, and smart architecture to every contract. Auto1 Group: senior full stack developer on React and Next.js (millions of users) Universe Group: full stack developer for SaaS analytics, A/B testing, and conversion program development Extreme Idea: full stack developer building a SaaS marketplace, admin panels, and CRM integrations. I am a specialist, mentor, and lead programmer with a portfolio across mobile, digital, creative, and studio projects. Technical assistance available as a dev, engineer, designer, and coding expert for long-term work — available for a discovery call, let's connect I am a full stack developer, web developer, react developer, front end developer, AI developer, wordpress developer, and programmer for complete software engineering: architecture, development, testing, deployment, and maintenance. A trusted full stack developer for companies needing clean, secure code. MSc Computer Science, BSc Applied Math, Kyiv-Mohyla Academy

I help ambitious founders and scale-ups launch high-performance mobile products by delivering scalable Mobile App Development that reduces technical debt by 40% and cuts time-to-market by up to 3 months. If you are looking for a seasoned React Native expert to bridge the gap between complex business requirements and a seamless user experience, you have found the right iOS Android Developer. In today’s digital-first economy, a mobile app is your most significant customer touchpoint. It needs to be fast, stable, and intuitive. I have spent years refining my craft in Mobile App Development, focusing on building robust, cross-platform solutions that perform under pressure. Whether you are building an MVP or scaling an existing ecosystem, my goal is to ensure your product survives the challenges of growth while staying ahead of the competition. When I approach Mobile App Development, I treat your project as if it were my own. I specialize in React Native because it allows for high-velocity iteration without sacrificing the native feel users demand. By leveraging TypeScript alongside Expo or bare React Native workflows, I create a Scalable architecture that ensures your app remains maintainable. I understand that your Requirements are unique from complex API integration with REST APIs and Supabase to real-time Firebase backends and intricate Push notifications. My role as your iOS Android Developer is to handle the heavy lifting so you can focus on strategy. Quality Mobile App Development is about the entire lifecycle. My process covers everything from initial UI/UX implementation and Performance optimization to the final App Store and Google Play submission. I have navigated review guidelines for Apple and Google hundreds of times, meaning I know exactly what is required to get your app live without the headaches of repeated rejections. Whether we are utilizing Swift or Kotlin for native performance hooks or working deep in the Node.js stack for custom backends, I ensure the transition from code to user device is frictionless. I am often looking for partners who value precision. My track record as an iOS Android Developer proves that I can handle the nuances of platforms. While my primary expertise lies in React Native, I bring a broad background in full stack developer methodologies, including Laravel, Python, and JavaScript. I have seen projects where a Flutter developer might have been a good fit, but I often demonstrate why a well-architected React Native solution offers better long-term flexibility for teams invested in the React ecosystem. My expertise extends to iOS Development, Android App Development, and integrating advanced Smartphone features like camera processing and biometric security. My workflow is built for modern teams. Independent work is my standard. I prioritize API integration and Performance optimization as a Must-have rather than an afterthought. If you have an existing codebase that needs an audit, I am ready to identify bottlenecks in your Scalable architecture and polish your UI/UX implementation to drive conversion. I believe Mobile App Development should be a collaborative, transparent journey. Beyond technical execution, I act as a product consultant. I help you decide which features are necessary for your v1, preventing "feature creep" that often delays launch. I have worked with everything from E commerce app development to complex SaaS solutions. If you are looking for an iOS Android Developer who understands that code is a business asset rather than a sunk cost, my approach will resonate with you. In the world of App Development, documentation is critical. When I hand over a project, you are not left with "black box" code. You receive a fully documented repository that any future Mobile app developer can navigate immediately. I use Firebase for rapid prototyping and Supabase when deep relational data structures are needed. I take great pride in the Mobile App experiences I create. I’ve seen projects move from sketches to thousands of daily users. I’m currently looking for innovative projects where my skills make a measurable difference. If you have an existing App Development hurdle, let’s solve it together. My communication is direct, and my focus is always on your outcome. From the first line of code to the final store approval, I am there to guide your project. I’m available for a 30–60 minute consultation to review your React Native or mobile app development needs. We can align on technical direction, delivery approach, and realistic timelines, after which I’ll outline a clear execution plan and cost structure. I’d be glad to collaborate. Let’s connect and turn your ideas into a top-tier mobile product.

🚀 Upwork Certified PHP, SaaS & 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 Developer with 10+ years of development. 🤖 Most 𝐀𝐈 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 fail after the demo. We specialize in getting them to production. 🏆 $200K+ Total Earnings ⚡ 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬, 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 & 𝐋𝐋𝐌 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 ⚡ 30–40% Faster Delivery Through AI-Assisted Engineering 👀 Click Hire or Invite Senior PHP Developer, Backend Architect & AI Product Engineer 🤖 AI-NATIVE BACKEND ENGINEERING ✔ 5+ years leveraging AI-assisted development, AI-native engineering, and intelligent automation workflows. ✔ OpenAI integrations, AI chatbots, AI agents, prompt engineering, and AI-powered backend services. ✔ AI-assisted testing, AI-enhanced code review, AI-powered debugging, and automated development workflows accelerating delivery by 30–40%. ✔ AI Stack: Cursor, Claude Code, GPT-4/GPT-4o, Claude Sonnet & GitHub Copilot 🚚 WHERE I DELIVER ✔ As a PHP Developer and Laravel Developer — 10+ years, 50+ backend systems, and 1M+ daily requests processed using Laravel, Symfony, Yii2, CodeIgniter, and CakePHP. ✔ As a Senior PHP Backend Developer — 300K+ async jobs processed daily using Redis, RabbitMQ, queues, event-driven architecture, and scalable API ecosystems. ✔ As a Full Stack PHP Developer — 30+ frontend integrations using Vue.js, React, Angular, Livewire, Inertia.js, and Tailwind CSS with up to 40% faster delivery cycles. ✔ As a WordPress Developer and PHP WordPress Expert — 20+ CMS platforms, custom plugins, WooCommerce solutions, and content-driven websites launched for growing businesses. ✔ As a Web Developer and Backend Architect — 100+ third-party integrations including Stripe, PayPal, AWS SES, Firebase, SendGrid, and enterprise APIs. ✔ As a Python Developer and Node.js collaborator — 15+ automation projects, AI workflows, backend services, and intelligent integrations. 🏆 INDUSTRY IMPACT ✔ Ecommerce Platforms — 2,423+ completed orders, 489+ registered customers, and 34% faster order processing through backend optimization. ✔ Healthcare Systems — 10,000+ users supported through HIPAA-compliant workflows and secure patient management solutions. ✔ SaaS Platforms — 20+ products delivered with subscription billing, CRM systems, ERP functionality, and multi-tenant architecture. ✔ Logistics Platforms — 30% faster reporting, automated workflows, and thousands of transactions processed monthly. ✔ Insurance Platforms — 40% lower operational overhead through document automation and workflow optimization. ✔ AI-Powered Products — 5+ AI solutions, OpenAI integrations, AI Agents, AI Chatbots, and RAG-powered systems reducing manual tasks by up to 40%. ✔ Marketplace Solutions — 1,666+ catalog items managed, 4-role permission systems, and 2.7x operational capacity improvements. ✔ Startup MVPs — 5–8 weeks faster launch cycles and up to 35% fewer production issues through scalable architecture and AI-assisted engineering. ⚒ HOW I BUILD ✔ 10+ years with PHP, Laravel, Symfony, Yii2, CodeIgniter, CakePHP, and enterprise backend architecture. ✔ 8+ years with MySQL, PostgreSQL, MongoDB, Redis, RabbitMQ, caching layers, and high-load optimization. ✔ 7+ years with AWS, S3, MinIO, Nginx, Apache, Docker, CI/CD, and cloud infrastructure management. ✔ 5+ years leveraging AI-assisted development, OpenAI APIs, AI automation, AI testing, and AI-powered debugging workflows. ✔ 50+ delivered applications, 1M+ daily requests handled, and 300K+ asynchronous tasks processed through scalable backend ecosystems 🏆 ACHIEVEMENTS ✔ 10+ years, $200K+ earnings, and dozens of successful long-term client partnerships. ✔ 1M+ requests per day and 300K+ async jobs daily processed through high-load PHP, Laravel, Redis, and RabbitMQ infrastructures. ✔ Up to 40% faster delivery and 50% lower infrastructure costs through architecture optimization, caching, and AI-assisted development. 🤝 WHY CLIENTS CHOOSE ME ✔ 10+ years of PHP, Laravel, Backend, and Full Stack expertise. ✔ $200K+ earned delivering scalable products from MVPs to enterprise platforms. ✔ Proven experience with 1M+ daily requests, high-load systems, and cloud-native architectures. ✔ AI-enhanced engineering delivering projects 30–40% faster without compromising quality. ✔ Long-term technical partner focused on scalability, performance, and ROI. 🚀 Have a SaaS platform, Ecommerce business, AI product, or custom web application that needs to scale? With 10+ years of PHP expertise, $200K+ earned, and experience building systems processing 1M+ requests per day, I can help turn your requirements into a secure, scalable, production-ready solution. Send an invite and let's explore the best technical approach for your project.

Most AI agents fall apart when they hit real business logic. Mine don't. As a Senior AI Developer and AI Engineer, I build autonomous systems that cut manual workflows by up to 85% — the kind your team will wonder how they ever lived without. 📩 Send your brief — I'll reply within 2 hours with a concrete action plan. 🏆 Why work with me? 🥇 Senior AI Developer and OpenAI developer with a track record of production-ready systems. 🥇 Expert AI Agent architect, agentic AI developer, and AI agent saas specialist delivering 10x ROI across SaaS, E-commerce, and Fintech. 🥇 Top-Rated AI Chatbot Developer — OpenAI developer, Bolt AI Developer, chatbot developer, and GPT-4 expert. 🥇 AI voice chatbot and AI voice assistant builder — AI voice VAPI, AI phone agent, and AI call agent systems that work 24/7. ❇️ Custom AI Agent & Autonomous Systems As a dedicated AI Developer, I build robust business logic — not wrappers. My AI Agent architecture relies on LangChain, LangGraph, and CrewAI. As an AI Developer with LangChain and Zapier expertise, I connect AI agent automation workflows to Slack, Shopify, and enterprise backends. Every AI Agent doubles as a 24/7 AI sales agent. As a Bolt AI Developer and AI web developer, I ship AI agent saas systems with front-end developer AI interfaces. As an OpenAI developer and generative AI agent specialist, the OpenAI API, GPT-4, and ChatGPT sit at the core of every AI Agent build. My AI agent python and AI agent n8n experience covers every layer of the automation stack. ❇️ AI Voice Chatbot, AI Phone Agent & AI Call Agent As an AI voice chatbot and AI voice assistant specialist, I build AI voice VAPI systems, AI phone agent flows, and AI call agent pipelines for sales, support, and AI agent real estate. My AI voice chatbot covers AI voice clone, AI voice chat, AI voice call, and WhatsApp AI chatbot channels. My AI agent real estate deployments use AI phone agent flows to qualify leads 24/7. ❇️ AI Chatbot Developer, LLM Engineering & AI Agent RAG As an AI Chatbot Developer, I build bots for WhatsApp, Telegram, and Web — GPT chatbot, OpenAI chatbot, and Telegram chatbot solutions. As a chatbot developer and AI bot developer, I integrate GPT-4, ChatGPT, and LLM backends. My AI agent rag and advanced RAG pipelines rely on Pinecone, Weaviate, and Milvus. As a Generative AI Developer, I handle LLM prompt engineering for OpenAI, Anthropic, and Llama. Medical documentation agent AI RAG is a specialist engagement for healthcare clients. ❇️ AI Agent for Sales, CRM & Digital Marketing Automation As an AI Agent architect and AI Backend Developer, I build AI sales agent and business development automation covering HubSpot marketing automation, Zoho marketing automation, digital marketing automation, YouTube automation, and social media marketing automation via API integration Python. My AI agent real estate and AI agent marketing work covers full-funnel automation pipelines. ❇️ Machine Learning, AI Deep Learning & Data Science As a machine learning expert, AI deep learning specialist, and data scientist, I build computer vision models using PyTorch and TensorFlow. My work covers Python data analysis, AI data analytics, Python web scraping, and AI classifier builds. As a Python full stack developer and AI app developer, I handle API integration Python, analytics engines, and AI model training. ❇️ AI SaaS, Full Stack AI & Enterprise As a Full Stack AI SaaS Developer, Bubble Developer AI, and iOS Developer AI, I build web application platforms and mobile AI. For Enterprises: multi-agent systems for 500k+ users and AI voice chatbot for enterprise sales. For Startups: AI Chatbot Developer and Python full stack developer shipping AI Agent and AI phone agent fast. For Deep Tech: AI deep learning, AI agent rag, and medical documentation agent AI RAG made actionable. Why should you hire me as an AI Developer? ▪ 7+ years as an AI Developer, Python developer, and machine learning expert across SaaS, Fintech, and Enterprise. ▪ $70K+ earned | 100% Job Success Score — production-ready AI systems, zero failed deployments. ▪ Expert in LangChain, LangGraph, CrewAI, OpenAI API, GPT-4, and Pinecone. ▪ 50+ AI agent and AI chatbot builds — from enterprise SaaS automation to AI agent real estate pipelines. ▪ 5+ production RAG systems and AI agent python pipelines cutting manual workflows by 85%. ▪ AI agent saas, AI phone agent, AI call agent, WhatsApp AI chatbot — cross-platform AI systems. ▪ AI developer, agentic AI developer, AI chatbot developer, AI voice assistant, AI agent RAG, generative AI agent, AI LLM developer ▪ Medical documentation agent AI RAG, digital marketing automation, HubSpot automation — full-funnel AI. ▪ AI deep learning, machine learning, and data scientist work powering every AI agent and AI SaaS build. ▪ AI Developer contracts with 100% Job Success. Looking for an expert AI Developer? Let us connect!

Hi, I’m Denys — a Full-Stack WordPress Developer with 10+ years of commercial experience. I specialize in building custom WordPress and WooCommerce solutions with clean architecture, scalable structure, and long-term maintainability in mind. Most of my projects are developed using custom WordPress themes and ACF Pro (I have a developer license), which allows full control over performance, flexibility, and content management. While I prefer hand-coded, custom WordPress themes, I also work confidently with Elementor, WPBakery, Divi, GenerateBlocks and other WordPress builders when the project requires it. My goal is not just to deliver a WordPress website, but to build a stable, well-structured product that will serve your business for years without constant fixes or technical headaches. What I can help you with: • Figma / PSD / Adobe XD to WordPress • Custom WordPress theme development • Advanced Custom Fields (ACF Pro) • WordPress WooCommerce development & customization • WordPress multi-vendor marketplaces (Dokan) • WordPress plugin development • API integrations & third-party services with WordPress • WordPress Speed Optimization • Multilingual WordPress websites (WPML / Polylang) • Customization of premium WordPress themes • React / Next.js integrations