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).

🧠🤖I design, build and scale AI Agent solutions that automate real business workflows - not demos, not experiments, but production-ready systems that actually run companies. If you’re looking to build AI Agent that can think, act, integrate with your tools and improve over time, you’re in the right place. I work as an AI Agent Developer and Agentic AI Developer, helping founders, teams and companies turn complex processes into reliable AI Agent Automation systems - from internal ops to customer-facing products. 📊 Numbers that reflect real AI Agent outcomes ✅ 12+ years in AI systems, AI Agent development, full stack & software engineering ✅ 85+ digital products delivered, including AI Agent platforms and AI automation systems ✅ 57+ MVPs launched - many built around an AI Agent or agentic workflows ✅ 40+ production systems with AI Agent automation used by real users ✅ 32+ products prepared for investor demos, AI feasibility reviews & technical due diligence ✅ $2.2B+ raised by products I helped build or scale ✅ 30-45% faster launches using reusable AI Agent frameworks and automation pipelines ✅ 40% fewer post-launch issues thanks to stable AI Agent logic and controlled integrations ✅ 100% code ownership - every AI Agent stays fully in your repositories ✅ Clients working with me for 7+ years 🤝 Most projects start with one clear goal: replace manual work with an AI Agent that can operate independently. That can mean: → An AI Agent that handles support, research or acts as a sales agent embedded into real business workflows → A backend AI Agent orchestrating APIs and business logic → An AI Voice Agent for calls, bookings or assistants → A multi-agent system acting as a full AI Automation Agency replacement As an AI Agent Builder, I create systems that reason, plan and execute - not just respond. This includes: → AI Agent Creation using modern agentic patterns → AI Agent Automation across CRMs, databases, internal tools and business development workflows → AI Agent n8n workflows for orchestration and scalability → Custom AI API Integration with existing platforms Each AI Agent is designed to be reliable, explainable and easy to extend. 🧩I approach every project as an AI Developer first, not a prompt engineer. As an Open AI Developer and AI Developer LangChain practitioner, I build AI Agent systems with: • Proper state management • Tool calling and function execution • Memory, context control and fallback logic • RAG pipelines (as an AI Developers RAG specialist) • AI-first architecture This allows each AI Agent to retrieve knowledge, reason over it and act safely in real environments. When needed, I design AI Agent Automation stacks that behave like a full AI Agency, but fully owned by you. 💡Beyond one-off bots - real agentic systems A simple chatbot isn’t an AI Agent. A real AI Agent understands goals, chooses actions and completes tasks end-to-end. That’s where Agentic AI Developer experience matters. I build: → Single-purpose AI Agent tools (e.g. Pinterest marketing AI Agent or Etsy marketing AI Agent) → Multi-agent systems coordinating tasks → Internal AI Agent Creator platforms → Long-running AI Agent services Whether you need an AI Agent Builder for MVP speed or a production-grade AI Agent Automation system, the focus stays the same: stability, control and measurable impact. Strong foundations first - AI when it makes sense 🧠🔧 Every AI Agent I build sits on solid engineering foundations. I combine AI Agent Development with backend systems, APIs and infrastructure so your AI Agent doesn’t collapse under real usage. ⚙️This includes: • Backend services for AI Agent logic • Secure AI API Integration • Scalable pipelines for AI Agent Automation • Monitoring, logging and iteration loops AI should reduce chaos. 🧭 Not every problem needs AI from day one If your project doesn’t require advanced AI immediately, I also help design and build data pipelines, backend services, APIs, dashboards and MVP infrastructure that work perfectly on their own. This keeps products stable, cost-efficient and flexible - ready to introduce ML or AI features later, without forcing complexity too early. 🔍 How I usually work on AI Agent projects 1️⃣ Understand business goals, constraints and where an AI Agent creates real leverage 2️⃣ Design the right AI Agent architecture (tools, memory, APIs, automation) - not hype 3️⃣ Build and refine the AI Agent iteratively with clear milestones and validation 4️⃣ Test, launch, monitor and evolve the AI Agent in real-world usage 🧰 Core tech stack - Frontend: React, Next.js, TypeScript - Backend: Node.js, Python (FastAPI, Flask, Django) - AI & Agents: OpenAI APIs, LangChain, RAG pipelines, Agentic AI patterns - Automation: AI Agent n8n, custom orchestrators - APIs: REST API, GraphQL, Webhooks - Databases: PostgreSQL, MongoDB, Redis - Cloud & DevOps: AWS, Docker, CI/CD - Architecture: SaaS platforms, AI Agent Automation, clean code Have an AI idea in mind? Let’s make it live.

I help startups and businesses build scalable backend systems using PHP, Laravel, Symfony, and Java. I specialize in backend development, REST API development, SaaS platforms, CRM/ERP systems, e-commerce solutions, and custom web applications. I build secure, maintainable, and high-performance backend solutions designed to support business growth. My expertise includes: ⚙️ PHP/Laravel/Symfony - custom web applications, SaaS platforms, CRM/ERP systems, e-commerce backends, and complex business logic ☕ Java/Spring Boot - backend services, integrations, microservices, and enterprise-level applications 🔗 REST API Development - secure, well-structured, and documented APIs for web and mobile applications 🗄️ Databases - MySQL, PostgreSQL, Redis, database design, query optimization, and performance improvements 🔐 Security & Authentication - JWT, OAuth2, data validation, secure API design, and OWASP best practices 🚀 Performance Optimization - caching strategies, query tuning, background jobs, and scalable architecture 🔄 Third-party Integrations - payment systems, CRMs, cloud services, and external APIs I follow clean architecture principles, SOLID practices, and write code that is easy to maintain and extend. Why clients choose me: ✅ Clear communication and regular progress updates ✅ Focus on quality, deadlines, and business goals ✅ Ability to work with both new projects and legacy systems ✅ Flexible collaboration: hourly or fixed-price projects Whether you need to build a backend from scratch, improve an existing application, or scale your current system, I can help. Let’s discuss your project.

Bubble Full Stack developer with 6+ years and 30+ production apps. I build AI-powered SaaS platforms, scalable MVPs, and automation systems that launch fast and grow without rewrites. Most founders waste months on developers who build features instead of products. I take a different approach — I think like a product owner and build like a senior engineer. Every Bubble app I deliver is production-ready from day one: clean database architecture, scalable workflows, and real integrations that work under real user load. What I build 🚀 Bubble MVPs for investor validation and market launch 📦 SaaS platforms, marketplaces, internal tools, CRMs, admin dashboards, and business systems in Bubble io 📦 Marketplaces and transactional Bubble io applications 🤖 Automation systems — n8n, Make, API workflows 🔗 Complex API integrations — Stripe, Twilio, custom REST APIs 📱 Responsive Bubble apps + Webflow landing pages 🎨 Full-stack: frontend UI, backend logic, database, performance 🔗 AI-driven Bubble io applications and chatbots ⚙️ My Expertise My core specialization is end-to-end Bubble io application development — from idea validation and Bubble io MVP launch to scaling and long-term product evolution. My background in JavaScript, HTML/CSS, and software engineering means I extend Bubble beyond its default limits — custom code, API connectors, performance tuning — without switching stacks. I also build automation-first workflows using n8n, Make, and Zapier. If your product needs AI agents, webhook pipelines, or LLM-powered features, I can design and build the entire system end-to-end. As an experienced Bubble io developer, I work with founders who need a reliable Bubble io application that ships fast, performs well, and can grow beyond the MVP stage. I combine Bubble io development with full-stack engineering to ensure every Bubble io MVP is not just fast to launch, but technically sound and extensible. Full-Stack Bubble io Development Focus I deliver complete Bubble io applications covering frontend, backend logic, database design, integrations, and performance optimization. Every project is approached as a real product, not just a prototype, even when building a Bubble io MVP Why clients work with me ✔️ 6+ years of Bubble experience — 30+ apps shipped ✔️ Full-stack coverage: UI, logic, database, integrations ✔️ AI-enhanced workflow: GPT, Claude, Gemini inside your product ✔️ Automation systems: n8n, Make, Zapier built alongside your app ✔️ International startup experience across US, UK, and Europe ✔️ Clear communication, predictable delivery, no surprises 🚀 Key areas of Bubble io development I handle daily: • Advanced Bubble io workflows, backend logic, and database architecture • Scalable Bubble io application structure for SaaS and marketplaces • High-performance Bubble io MVP builds optimized for real users • Custom API, REST API, and third-party API integration inside Bubble io applications • AI-powered Bubble io apps using OpenAI, ChatGPT, Gemini AI, Stable Diffusion • Payments and subscriptions in Bubble io applications • Front-end customization for Bubble io projects using HTML, CSS, JavaScript • Webflow + Bubble io setups for clean UI and conversion-focused landing pages Why Work With a Full-Stack Bubble io Developer • Fast launch of a production-ready Bubble io MVP • Clean, scalable architecture for long-term Bubble io application growth • Performance-focused and responsive Bubble io UI • Reliable third-party integrations using Bubble io API • Clear communication and predictable delivery from an experienced Bubble io developer I don’t treat Bubble io as a limitation. As a full-stack Bubble io developer, I extend Bubble io applications with custom code where needed, ensuring your Bubble io MVP can evolve into a serious product without rewrites. Ready to build? Send me your project idea — I'll respond with a clear plan within a few hours. 👉 Click Invite to Job or send a direct message to get started. 👀 Please use these Keywords to find me: Bubble developer · Bubble Expert · No-Code Developer · Web development · MVP · UI/UX · User Flow · Landing page · OpenAI · ChatGPT · E-commerce · API integration · Webflow · CRM · Make · SaaS Platforms · Stripe · AI APIs · WEB Apps · JavaScript · JSON · ChatGPT · AI integrations · Xano · AI Chatbot · Gemini · AI Agent · ERP Platforms · Webflow Expert · Webflow developer · Cursor AI · Lovable · User Story · LowCode Web development · No code developer · Low code developer · AI SaaS development · MVP development · SaaS platform · Webflow developer · n8n automation · Make automation · Zapier · OpenAI integration · Claude API · Stripe · API integration · Xano · Supabase · workflow automation · AI agent · internal tools · marketplace · CRM · landing page

👋 Hey everybody and welcome to my Upwork space! I’m a reliable and responsible Full-Stack developer with 5 years of experience. I'm a critical thinker with strong analytical and solving skills. I keep discovering new technologies every day and am very motivated to achieve the best results. I’m capable of being a team player as well as working alone. I can build a site from scratch, or I can continue development with the existing code. My skills ⤵️ ➡️ Front-end Development Core Technologies: JavaScript (ES6+), TypeScript Frameworks: React, Next.js (App Router, SSR, ISR) State Management: Redux, Context API, MobX, Recoil, Zustand, Jotai Forms & Validation: React Hook Form, Zod Data Fetching & Caching: React Query Animations & UX: Framer Motion Authentication & Security: Clerk, OAuth2, JWT API Integration: RESTful services, GraphQL Performance & Real-time: WebSockets, Web Workers, rendering and bundle optimization ➡️ Backend Development Frameworks: Nest.js, Express.js, Fastify APIs: RESTful, GraphQL (schema design, resolvers, auth) Architecture: Modular systems, service-based architecture, domain separation Background Processing: BullMQ, RabbitMQ (queues, retries, scheduling) Real-time Systems: WebSockets, event-driven communication ➡️ Responsive UI & Component Libraries Core Technologies: HTML5, CSS3, Sass CSS & UI Frameworks: Tailwind CSS, Bootstrap, Material UI, Ant Design, Shadcn UI Component Architecture: Reusable, scalable design systems Design Implementation: Pixel-perfect UI from Figma Cross-browser & Responsive Design: Mobile-first, accessibility-aware layouts ➡️ Testing & Quality Assurance Unit Testing: Jest, Vitest End-to-End Testing: Cypress Integration & API Testing: Postman Code Quality: ESLint, Prettier, Husky, consistent review standards ➡️ DevOps and Automation Version Control: Git (branching, rebasing, Husky Git hooks) Containerization: Docker, Docker Compose CI/CD Pipelines: Vercel, Netlify, Bitbucket Pipelines, AWS Cloud Platforms: AWS (deployment, scaling) ➡️ Database Management & Data Layer Databases: PostgreSQL, MySQL, MongoDB, Redis Data Modeling & Access: Prisma, Sequelize, Mongoose Experience with performance tuning, migrations, and data consistency ➡️ API Documentation & Collaboration Documentation: Swagger / OpenAPI API Collaboration: Postman collections, contract-based development ➡️ Other Tools & Libraries Utilities: Lodash, HTTP clients Data Visualization: Chart.js, Lightweight-charts.js Advanced UI & Graphics: Three.js E-commerce: Shopify integrations Email Services: SendGrid Also, I have a background of learning Java, Python, C++, C#, have knowledge of Object-Oriented Programming and passed two courses from Cisco Networking Academy, you can see my certificates attached in profile. It is important to me to build long-term relationships with clients. I’m flexible with my working hours and I’m ready to work up to 40 hours per week and up to 10 hours per day, if there’s something urgent.

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

Concerned about poor app performance impacting your bottom line? Research indicates that 53% of users will abandon an app if it takes more than three seconds to load. I am a Senior Ruby on Rails developer with a 8 years of experience in web application development, with a deep understanding of the Ruby on Rails framework, I am committed to delivering exceptional results and providing efficient solutions to your projects 𝐌𝐘 𝐏𝐑𝐎𝐅𝐄𝐒𝐒𝐈𝐎𝐍𝐀𝐋 𝐀𝐂𝐇𝐈𝐄𝐕𝐄𝐌𝐄𝐍𝐓𝐒 𝐀𝐑𝐄: 1. Spearheaded the successful delivery and launch of 25 sophisticated Ruby on Rails web applications, ensuring seamless functionality and adherence to client specifications, resulting in high client satisfaction rates 2. Orchestrated performance optimization initiatives, implementing cutting-edge strategies that led to a remarkable 42% reduction in page load times, enhancing user experience and increasing user engagement 3. Guided a multidisciplinary development team in the seamless migration of a complex legacy system to Ruby on Rails, streamlining operations, improving system efficiency, and generating substantial cost savings in maintenance and support 4. Implemented rigorous security protocols and industry best practices, fortifying Ruby on Rails applications against potential cyber threats and reducing the risk of data breaches by a significant 50%, safeguarding sensitive user information 5. Demonstrated active involvement in the Ruby on Rails community by making impactful contributions to open-source projects. Garnered recognition for 3 notable code contributions, widely adopted by the community, and enhancing the overall functionality and reliability of the Ruby on Rails ecosystem 𝐖𝐇𝐀𝐓 𝐌𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐒𝐀𝐘 𝐀𝐁𝐎𝐔𝐓 𝐌𝐄: ⭐️ «Vladimir delivered exceptional results for our healthcare project. Gotoinc’s expertise in Ruby on Rails development exceeded our expectations. Their attention to detail, adherence to coding best practices, and a strong focus on security ensured the protection of sensitive patient data. Their professionalism, effective communication, and timely delivery were impressive. We look forward to future collaborations» - Sarah, CTO ⭐️ «We are highly satisfied with Gotoinc Team’s work on our e-commerce platform. Their deep knowledge of Ruby on Rails and e-commerce best practices resulted in a robust, scalable, and user-friendly web application. Their optimization techniques improved performance, leading to faster page load times and increased conversions. Their proactive communication and attention to detail made the project a success. We highly recommend the Gotoinc team for e-commerce projects» - Alex, Co-Founder 𝐇𝐎𝐖 𝐓𝐇𝐄 𝐇𝐈𝐑𝐈𝐍𝐆 𝐏𝐑𝐎𝐂𝐄𝐒𝐒 𝐋𝐎𝐎𝐊𝐒 𝐋𝐈𝐊𝐄: There are two options for collaborating with Gotoinc: - Talents-as-a-Service model a dedicated expert(-s) on a subscription basis. - Project-Based Collaboration model we deliver a certain scope or solution in a pre-defined timeline/budget. 𝐇𝐨𝐰 𝐭𝐨 𝐬𝐭𝐚𝐫𝐭: 1. Having an intro, where we identify your request 2. Our team identifies specific Talent or Team for your request 3. We deeply research your request and outline unique collaboration terms 4. Gotoinc presents your unique proposal and negotiates it with You 5. We sign a contract 6. We kick off our ongoing collaboration 💻 𝐑𝐮𝐛𝐲: Ruby, Rails, Sinatra, Padrino, Grape, Sidekiq, Nginx, RSpec, Capybara, Rubocop, Capistrano, Unicorn, Puma, Elastic Search 🔧Databases: PostgreSQL, MySQL, SQLite3, Redis 📊 Web Servers: Apache, Nginx 💻JavaScript JavaScript, ES 6/7, React, Vue, Jasmine, Handlebars, JSX, SKIM 📈HTML/CSS HTML5, CSS3, SCSS, Bootstrap, HAML, SLIM 📡 VCS: Git (Github, Bitbucket) 🆙 If you are interested in discussing your project with me, make sure to click the 👉🟢INVITE🟢 button, and let’s talk 🤝 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐞𝐝 𝐒𝐤𝐢𝐥𝐥𝐬: Ruby on Rails Development, Full-stack Web Development, MVC Architecture and RESTful APIs, Front-end Technologies (HTML5, CSS3, JavaScript), Responsive and Mobile-first Design, Database Design and Implementation (PostgreSQL, MySQL), User Authentication and Authorization, Integration of Third-party APIs, Deployment to Cloud Platforms (Heroku, AWS), Test-driven Development (TDD), Agile Methodologies (Scrum, Kanban), Version Control Systems (Git, GitHub), Project Management and Collaboration Tools (Jira, Trello), Documentation and Code Commenting Last updated: March, 2026

💯 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 | 120+ 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 | 1400+ 𝗵𝗼𝘂𝗿𝘀 on Upwork Hi there! I’m a Python Developer and Full Stack engineer with 10+ years of experience building SaaS platforms, GovTech solutions, healthcare & education systems, monitoring platforms, and AI & ML applications. 🎓 Certified Senior Python & Django Developer 🎓 Python & Django Instructor and Community Ambassador (Django Girls) ✨ 𝗪𝗵𝗮𝘁 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗴𝗮𝗶𝗻 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗺𝗲: 🖇 Rapid MVP launches and SaaS products built by an experienced Python Developer 💰 Operational cost reductions of 30%+ through automation and smart engineering 💰 Helped startups raise over $15M in funding in 2024 🖇 Systems designed by a Full Stack Engineer to support 200k+ users and 10k+ concurrent sessions 🔐 Security: my team is in the process of ISO 27001 certification, and we’ve helped clients pass audits and achieve certification themselves 🏥 Hands-on experience with healthcare regulations and compliance, delivering secure EHR and patient-data systems ✨ My recent projects' achievements: 🏆 GovTech platforms generating $890M+ revenue and handling 245k+ transactions 🌍 Global recognition with the UN Public Service Award and Open Government Partnership Summit Award 🛠 Tech Stack: - Backend & APIs: Python (Django, FastAPI, Flask), RESTful APIs, GraphQL - Frontend: React, Next.js, TypeScript, Tailwind CSS - Databases & Data: PostgreSQL, MySQL, MongoDB, Redis, BigQuery, ETL/ELT - Cloud & DevOps: AWS, GCP, Azure, Docker, Kubernetes, Terraform, CI/CD pipelines - AI & ML: OpenAI API, ChatGPT API, PyTorch, TensorFlow, OCR, NLP, automation, data pipelines - Other: Supabase, Payment Gateway Integration 🧩 Solutions As both a Python Developer and Full Stack Engineer, I provide end-to-end solutions tailored to your needs: 📎 SaaS Platforms & Enterprise Apps: From backend (Django, FastAPI, Flask) to frontend (React, Next.js), I design subscription models, billing systems, analytics, and admin dashboards. 📎 Healthcare & Education: I build secure EHR systems and large-scale eLearning platforms that meet strict compliance standards. Using Django and FastAPI for backends, PostgreSQL for reliable data storage, and AI modules built on PyTorch, I’ve delivered solutions that handle sensitive patient data, automate workflows, and provide doctors and administrators with intuitive React dashboards. 📎 AI & ML Applications: I develop intelligent tools using OpenAI API, ChatGPT API, and deep learning frameworks like PyTorch and TensorFlow. These applications power advanced OCR, NLP, chatbots, and predictive analytics - often cutting manual work by 70%+ and boosting accuracy to over 90%. To make insights accessible, I integrate them with FastAPI backends and interactive React dashboards. 📎 Monitoring & IoT Platforms: Real-time pipelines are enhanced with AI anomaly detection models developed in PyTorch or TensorFlow, wrapped in Flask or FastAPI microservices, and visualized through React dashboards for actionable decision-making. 📎 Business Automation: CRMs, ERPs, and workflow tools engineered to cut costs and speed up decision-making. 🤝 Why clients choose me Not only as a Python Developer but also as a strategic Full Stack Engineer I can oversee the entire software lifecycle: from architecture to deployment. I provide clear communication (Daily and weekly syncs, demos), transparent reporting, and flexible engagement models. Working with me, you’re not just getting a Python Developer. You’re partnering with a Full Stack Engineer committed to delivering secure, scalable, and high-performance solutions that directly impact your growth. 📩 Let’s connect and turn your idea into a market-ready product.

As a forward-thinking Senior Engineer and Team Leader with over two decades of experience, I work as a full stack developer specializing in Video Streaming and real-time communication solutions based on WebRTC. I combine strong architecture thinking with hands-on delivery, acting both as a technical leader and a practical full stack web developer who understands real product needs and builds scalable WebRTC-powered systems. Today, my focus as a full stack developer includes the strategic application of advanced AI technologies alongside WebRTC-based real-time communication platforms. I actively work with OpenAI APIs, Whisper for speech recognition, LLaMA2 for open-source large language models, and LangChain for building AI-driven workflows. This positions me as a full stack developer AI who can integrate intelligence directly into real-world WebRTC video and streaming products. Throughout my career as a full stack developer, I’ve contributed to Telemedicine, Online Education, and Real-time Entertainment by building WebRTC-powered communication platforms. I’ve led teams delivering webinar platforms, live chat systems, and complex real-time applications, acting both as a senior web developer and system architect who ensures scalability, security, and long-term maintainability for WebRTC infrastructures. In AI-focused projects, I operate as a full stack developer who bridges data, logic, and user experience inside WebRTC-enabled applications. My team and I integrate conversational AI, speech-to-text, and knowledge-driven systems using OpenAI, Whisper, and LLaMA2. With LangChain, we design intelligent pipelines that automate workflows and data processing, enhancing WebRTC communication platforms with AI-driven capabilities. WebRTC remains a core part of my work as a full stack developer, especially for building high-performance real-time systems. We design everything from low-latency WebRTC infrastructure to complete applications, delivering solutions that work seamlessly across web and mobile. This includes building scalable video streaming app architectures capable of handling thousands of concurrent users through WebRTC. As a full stack developer, I also provide consulting and development services across North America and Europe, helping companies design and build WebRTC-based video communication platforms. I work with companies in Entertainment, E-Learning, Healthcare, and Finance. Depending on project needs, I act as a React developer, Wordpress developer, or mobile app developer while implementing scalable WebRTC solutions. Our services as a full stack developer team include system architecture, UI/UX design, and custom development of WebRTC streaming and real-time communication platforms. We build modern interfaces, robust back-ends, and real-time systems, including secure WebRTC video stream delivery for live and on-demand use cases. We have worked with most of the major Webinar and Online Education platforms on the market, delivering solutions as a full stack developer team that understands both the business and technical sides of WebRTC video streaming products. We frequently modernize existing platforms and migrate legacy systems to scalable cloud-based architectures built around WebRTC technologies. As a full stack developer, I’ve led the creation of webinar systems, live chat apps, WebRTC video conferencing platforms, real-time video auctions, messengers, e-learning platforms, telemedicine solutions, dating apps, Twitch-like platforms, TikTok-style apps, VoD systems, and live shopping platforms. Many of these solutions rely on modern stacks including full stack developer React and full stack Lavarel approaches integrated with WebRTC. Beyond development, I support clients as a full stack developer with load testing and performance optimization for large-scale WebRTC streaming systems. My background across front-end, back-end, databases, and cloud platforms allows me to lead projects end-to-end and deliver reliable, production-ready WebRTC platforms. I invite you to collaborate with me as a full stack developer who understands AI, WebRTC, and scalable real-time product development. Together, we can build innovative WebRTC-powered solutions that align with your business goals and grow with your users.

✅ 𝗣𝗥𝗢𝗩𝗘𝗡 𝗥𝗘𝗦𝗨𝗟𝗧𝗦❗ Hundreds 💯 of WordPress and GoHighLevel websites, funnels and landing pages with high conversion rate, AI automations and dozens of complex Full stack CRM projects were developed and delivered successfully for my clients. 👉𝗢𝗽𝗲𝗻 𝗺𝘆 𝗽𝗿𝗼𝗳𝗶𝗹𝗲❗ Specialisation in HealthTech domain Leveraging Figma for intuitive and catchy UI/UX and graphic design, WordPress, Elementor, GHL and tons of WordPress plugins for quick website development, including: - WooCommerce and Dokan for Ecommerce web-store or online marketplace development - Go High Level for robust and flexible CRM implementation. - PHP, HTML, CSS, JavaScript for fine customisation of GoHighLevel and WordPress themes, plugins, websites, and for meticulous development of custom client requirements. I'm an experienced GoHighLevel and WordPress developer with more than 10 years of practical experience in CRM and CMS Development, WordPress and PHP tech stack. Also I delivered 30+ complex and large-scale IT / Software systems, SaaS solutions, and dozens of small-to-medium software projects and websites. Core Team of 14 software engineers, AI Automation experts, web developers, UI/UX designer and Tester / QA engineers can join your project when needed. 🔝𝗧𝗢𝗣🔝𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝘄𝗲 𝘂𝘀𝗲: 🌟 WordPress, Elementor, GoHighLevel, PHP, JS, HTML / CSS, Figma 🌟 .NET / C#, .NET Core, Open API, ASP.NET 🌟 JavaScript : Vue.js, React.js, Node.js, jquery 🌟 AI Agents: Claude, ChatGPT, 𝗔𝗹𝘀𝗼, 𝘄𝗲 𝘂𝘀𝗲: • Backend: PHP, JavaScript / Node.js • FrontEnd: HTML5/CSS3, JavaScript/TypeScript (React, Vue.js, Angular, jQuery) • DB: PostgreSQL, My SQL, MS SQL, MongoDB, Redis • CRM: GoHighLevel, Go High Level, GHL 💻 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝘄𝗲 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗱: ✓ Medical practice management system ✓ Patient education module ✓ Patient Portal ✓ Medical device platform ✓ Consumer lending system ✓ Scoring and credit decision ✓ Collection system ✓ Regulatory reporting for investment banking ✓ DWH and BI-system for e-commerce ✓ Supermarket in the pocket (Mobile app) ✓ E-commerce network with central CRM for large-scale writing services ✓ System for Customer feedback collection * And much more... ⭐𝗪𝗵𝗮𝘁 𝗰𝗮𝗻 𝘄𝗲 𝗱𝗼 𝗳𝗼𝗿 𝘆𝗼𝘂: ✓ Build a top-notch software product ✓ Pick up and maintain your legacy code ✓ Set up and improve your Software Development Life Cycle (SDLC) ✓ Measure and improve the productivity of the engineering team ✓ Hire or rump up your engineering team with highly talented engineers from Ukraine ✓ Ensure Quality (QA/QC) for your projects ✓ Set up your project management system (Jira, Trello, YouTrack, or other options) ✓ Set up an R&D office for you in Ukraine or distributed ✓ Consult for any project management and SDLC questions ✓ Contact me if you have any other requests regarding software development 𝗔𝗯𝗼𝘂𝘁 𝗺𝗲 I'm so confident I can release any software project because I have over 20 years’ of proven experience in the successful "GREEN" delivery of top-notch software products for both enterprises and startups. I'm a result-oriented Software Development Manager, Agile Project Manager, R&D Manager, Kanban Professional, and Scrum Master. My teams use .NET / C#, JavaScript (React or Vue.js), Python, SQL, Mongo, etc. to build top-notch products for my dear clients. I got hands-on experience working in different roles, starting as a Software engineer, Team Lead, Scrum Master, Product Owner, Project and Program manager up to General manager of the R&D center in Ukraine for a software company from California. 🏅Certified Kanban Management Professional (KMP II) Also, we have a broad network of highly talented software engineers, data scientists, architects, designers, BAs, and QAs from Ukraine who are able to join your projects. So if you need to extend your team or you need a new team I'll hire them for you. Just drop me a line to discuss your project. Let's make it together!