Full Stack Software Engineer with 9+ years of experience building scalable web and mobile applications, with a strong focus on AI chatbots, workflow automation, and custom SaaS platforms across B2B, FinTech, and consumer products. I specialize in AI-powered conversational systems that do more than scripted replies — chatbots that understand context, retain memory, and integrate seamlessly with your backend, CRM, or third-party tools. Whether you need an AI assistant for lead capture, support automation, or internal operations, I deliver secure, reliable, and high-performing solutions end-to-end. What I Build: 🔸AI chatbots using GPT-4, Claude, LLaMA, or custom LLMs 🔸Memory-enhanced chat flows (Pinecone, Weaviate, PGVector) 🔸RAG search tools with LangChain 🔸Secure backends (Node.js, Java, Python) with SQL/NoSQL databases 🔸Clean, responsive UIs (React, Angular, TypeScript) 🔸Integrations with Slack, Intercom, HubSpot, Zapier 🔸Full-stack chatbot platforms with web or hybrid mobile frontends and cloud-hosted backends Tech Stack Highlights: 🔸Languages: Java, Node.js, Python, TypeScript 🔸Frameworks: Angular, React, Express.js, FastAPI 🔸AI Tools: OpenAI, LangChain, Pinecone, ChromaDB 🔸Cloud & DevOps: AWS, Docker, Terraform, GitHub Actions 🔸Databases: PostgreSQL, MySQL, MongoDB, Redis 🔸Design: Figma, Storybook If you’re building an AI chatbot, adding conversational features to your product, or automating complex workflows, I’d be happy to help you design and deliver it from day one. Let’s connect and bring your idea to life — faster and smarter.

Hi all, I’m a full-stack Node.js, React.js, Vue.js developer with over 6 years of experience in front-end and back-end development across various apps. I’m passionate about coding and strive to write clean, well-structured, and high-quality code, which I consider one of the most rewarding aspects of development. 🟩 🟩 🟩 🟩 My key fields of professional interest are FinTech and Real Estate. I am committed to developing sleek interfaces and business logic for projects related to Finance, Payment processing, and Property for rent and sale that require high-load systems with multiple user roles, complex platforms with back offices and dashboards, payments and purchases, exceptional antifraud and security, and third-party API integrations. Having completed a few projects as a Full-Stack Developer in these domains, I feel prepared to face new challenges and bring value to FinTech and Real Estate businesses worldwide. MY TECH STACK ✅ PROGRAMMING LANGUAGES: JavaScript, TypeScript, HTML5/CSS3, Python ✅ FRAMEWORKS & LIBRARIES: React.js, Redux, Redux Toolkit, Redux-Saga, Redux Reselect, Node.js, Nest.js, Express.js, Next.js, MUI, Vue3 (Composition API, Options API), VueX, Vuetify, Pinia ✅ DATABASES: PostgreSQL, MongoDB, Firebase ✅ PREPROCESSORS: Sass, SCSS ✅ TESTING TOOLS: Unit Testing, E2E Testing ✅ THIRD-PARTY APIs & LIBS: Instagram, Google API, Firebase ✅ OTHERS: REST API, AWS (EC2, Lambda, Cognito, EKS), Docker, Kubernetes, Linux, CI/CD, DigitalOcean, Heroku My superpowers are my passion for tech, clean code, and quality assurance and testing skills. Leveraging these strengths and my innovative mindset, I create state-of-the-art and flawless web applications or PWAs. Besides, it helps me quickly master new technologies, collaborate efficiently with distributed teams, and choose the best tech stack for every case. On top of that, my clients appreciate the hands-on and insightful perspective I bring to their projects, which was earned through my various track records working with large enterprises and small startups across the EU and US markets. PORTFOLIO ✅ A Real Estate Platform with 360° panorama views for the Australian market. Tech stack: React.js, Redux, Redux-Toolkit, Socket.io, Next.js, Three.js, Nx monorepo, Jest. ✅ A FinTech SaaS payment platform servicing businesses in various industries across 200 countries. Tech stack: JavaScript, Vue3 (Composition API), Pinia, TypeScript, Docker. ✅ A distinguished IT services provider, delivering exceptional solutions to small and medium-sized enterprises (SMEs) across continental Europe. I developed a PWA using React, Vue, Node, and SSR, SSG, and ISG applications utilizing Next.js. ✅ A prominent technology enterprise specializing in producing cutting-edge EV charging stations, and distributing them worldwide. Tech environment: React, Redux, Saga, Reselect, Node, Nest, Mongo, AWS. ✅ Websites development for a Real Estate company that provides apartment renovation services. Tech stack: JavaScript and PHP. 🟩 🟩 🟩 🟩 If you are looking for a reliable, creative and experienced tech professional, you have come to the right place—I'm excited about becoming your long-term partner! Let’s start working together! LANGUAGES I SPEAK Ukrainian is my native language. Besides, I have strong English skills. Most of my previous customers were English-speaking, so I am comfortable communicating in English. MY TEAM I am at ease as an individual contributor, but being a team player works best for me. So I joined Extrawest — an Upwork Top Rated Agency specializing in FinTech and Banking, Gambling and Betting, Food Ordering and Delivery, Logistics and Fleet Management, Medical Insurance and Healthcare, and special software for Electric Vehicles Charging Station networks since 2006. Having most of our resources based in Europe, we’ve been working with customers from over 20 countries (the US, Canada, Australia, most of the EU, South Africa, Singapore, Japan). Hence, it won’t be a problem for us to adjust to your timezone and working schedule. 🟩 🟩 🟩 🟩 My Agency Skills: Front-End (Frontend) Development, Back-End (Backend) Development, Full-Stack (Fullstack) Development, Mobile Development, EV Charging, Delivery, Food Ordering, FinTech, Banking, Loan, Mortgage, Wallet, Dashboard, Healthcare, Insurance, Betting, Gambling, Gaming, Flutter, Dart, JavaScript (JS), TypeScript (TS), Angular, Vue.js (VueJS, Vue), React.js (ReactJS, React), Node.js (NodeJS, Node), Java, Spring, SpringBoot, Hibernate, Python, Django, Scrapy, Quality Assurance (QA), Manual Testing, Automated Testing, UI/UX Design, Figma, Adobe Creative Cloud, DevOps, MySQL, PostgreSQL, MongoDB, Firebase, Docker, Amazon Web Services (AWS), Google Cloud Platform (GCP), Project Management (PM).

Looking to build scalable, user-focused web and mobile applications for your Real Estate, Healthcare, or FinTech business? I'm here to deliver cross-platform mobile apps and responsive web solutions tailored to your needs. Drop me a message to discuss your project and book a consultation! With over 12 years of software development experience, including 7 years specializing in full-stack development, web development, and mobile app development, I bring a comprehensive skill set and an open perspective to every project. My expertise in React Native, TypeScript, and Node.js ensures scalable applications with clean code and optimal performance. My Technical Expertise Includes: ✅ Front-end Development: JavaScript, TypeScript, React, React Native, Angular, React Hooks, Redux, Material-UI, Ant Design, HTML5, CSS3, SASS/SCSS, Bootstrap, and responsive web design. ✅ Mobile Development: Cross-platform mobile apps using React Native CLI, Expo, React Navigation, push notifications, and App Store/Google Play deployment. ✅ Back-end Development: Node.js (Express, Nest.js, Koa), RESTful APIs, GraphQL, WebSockets, socket.io, and server-side rendering. ✅ Databases: PostgreSQL, MySQL, MongoDB, Redis, Firebase, Cloud Firestore, Supabase, Prisma, and TypeORM. ✅ Cloud & DevOps: AWS, Google Cloud Platform, Firebase, Supabase, Docker, serverless architecture, and CI/CD pipelines. ✅ Tools & Practices: Git, GitHub, NPM, Yarn, Webpack, Vite, Jest, Cypress, unit testing, integration testing, Agile development, and version control. ✅ AI integrations: LangChain, MCP Servers, LLaMA, OpenAI ChatGPT, Claude. ✅ Automation: n8n, make.com (Integromat). Worked With: ✔ Third-party APIs & Services: Google Maps API, Stripe API, Mailchimp, Cloudinary, Mixpanel, D3, and more. ✔ Industries: E-commerce, FinTech, Healthcare, EdTech, real-time applications, and SaaS development. Why Work With Me? As a reliable, goal-driven developer, I thrive in deadline-driven environments and deliver high-quality, type-safe solutions. My focus on client communication, problem-solving, and code optimization ensures your project is completed on time and exceeds expectations. I’m adept at team collaboration, technical documentation, and project management, making me a valuable partner for your scalable applications. ✅ Let’s build feature-rich, performance-optimized web and mobile solutions together! Message me to discuss how I can elevate your project with my full-stack development expertise.

15+ years in .NET and C# area successfully covering Web | Mobile | Backend # From modern .NET / ASP.NET Core MVC and Blazor apps development to legacy WebForms support. # Data Storage in clouds or SQL/NoSQL databases accessed with Entity Framework. # From front-end side based on Angular / Vue / React to low-level support with pure JavaScript/jQuery/Ajax. # From MAUI and Flutter iOS/Android/Windows MvvM modern apps to old-fashioned WinForms. - Computer Science University Degree. - Analytics, legacy code migration, testing, support, documentation. - Long- and mid-term collaboration preferred. - Flexible working hours; ET/EDT time zone communication-friendly. - Ukrainian Development Culture (located in safe place now).

I am an AR/VR Solution Architect and Idea Generator with 10+ years of hands-on experience creating immersive 3D, AR, VR, and real-time web solutions. My primary value lies in transforming raw ideas into clear, viable, and scalable technical concepts. I generate product ideas, define system architecture, choose the right technologies, and design the overall technical vision that turns concepts into real, working products. I stay personally involved in the most critical parts of implementation to ensure that the original idea is executed correctly and reliably. I specialize in projects where there is no ready-made solution and where strong architectural thinking is required — including AR/VR platforms, interactive simulations, digital twins, product configurators, and experimental real-time 3D applications. What you can expect: • Clear product and technical vision from the very first discussion • Thoughtful architecture built for scalability and long-term use • Hands-on implementation of core and complex components • Direct communication with the person responsible for technical decisions • Production-ready solutions, not just prototypes or demos Core expertise: AR / VR / XR • WebXR, 8th Wall, ZapWorks, Spark AR • Unity (C#): AR, VR, MR applications • AR Foundation, ARCore, ARKit, Vuforia, EasyAR • VR frameworks: XR Interaction Toolkit, VRTK, Oculus SDK Unreal Engine • Unreal Engine 4 / 5 (Blueprints & C++) • Real-time visualization and architectural walkthroughs • Interactive simulations and product configurators • CARLA Simulator for autonomous driving and simulation • Niagara VFX, Sequencer, Metahuman integration Web & Real-Time 3D • Three.js, A-Frame, PlayCanvas • WebGL, GLSL • React, Vue.js • Desktop packaging with Tauri and Electron Backend & System Architecture • Node.js, PHP, Laravel • MySQL, PostgreSQL, MongoDB • Docker, Nginx • API integration and system design How I work: I work directly with clients from the idea stage. I help shape the concept, define the architecture, validate technical assumptions, and personally implement or prototype the most critical parts of the system. My goal is to ensure that the final solution is technically sound, scalable, and aligned with the original vision. Typical use cases: • Turning early-stage ideas into technical concepts and prototypes • Designing architecture for complex AR/VR and 3D systems • Interactive simulations and digital twins • 3D product configurators and visualization platforms • Technical consulting and architecture reviews My goal is to help you move from an idea to a clear, technically grounded solution that can grow into a real product. Feel free to book a consultation to discuss your idea, concept, or technical challenge. Keywords: AR, VR, XR, WebXR, Unity, Unreal Engine, Three.js, WebGL, Simulation, Digital Twin, Product Configurator, Real-Time 3D, Interactive Visualization, ARKit, ARCore, Vuforia, Mixed Reality, Oculus, HTC Vive, HoloLens

Welcome 👋I am an experienced web developer who is passionate about delivering successful projects and has a track record of delivering them 🚀 🔑Key points about me: - Expert web developer with over 4 years of experience developing complex web applications. - Good communicator, with experience managing and leading development teams. - I have an entrepreneurial mindset and a product-oriented mindset, I enjoy not just writing code, but making projects successful. - A full-fledged developer, although I prefer the back-end. - Deep understanding of OOP, design patterns, domain-oriented design. - Specializes in React, Python, TypeScript, Flask, Django, FastAPI, WEB3 - Ability to write complex and efficient database queries, optimizing the site's performance. Knowledge of NoSQL (MongoDb), SQL(Postgresql, MySQL, SQLite). - Algorithms and Data Structure, Catching(Redis) - Experience with asynchronous messaging/queue processing. - Worked with many APIs such as Stripe, Saferpay, Twilio, Cronofy, Sendgrid, Hubspot, Zapier, Viva, PayPal and more. 💻When programming, I use industry best practices to achieve the best results; I consider myself a talented programmer. I am detail-oriented, my code is always well-commented, clean and easy to understand. I am also a quality-oriented developer and my code is always well-tested. I am able to plan, execute, test and launch projects. I am a self-starter who can see things through to the end. I am passionate about building great projects and helping companies succeed. Feel free to message me to discuss your project and make it a success!🚀🚀🚀

I am a Fullstack Web Developer with 5 years of hands-on experience in software development, holding a Bachelor's Degree in Information Technologies from the National Technical University of Ukraine 'Kyiv Polytechnic Institute'. My primary expertise lies in building robust, scalable web applications using C#, React.js, and Next.js. I have deep knowledge of backend development with C#, leveraging ASP.NET Core, Entity Framework Core, and LINQ to create high-performance APIs and business logic layers. I actively use C# for task parallelization, memory management, and working with system-level utilities. On the frontend, I specialize in building modern, responsive UIs using React.js and Next.js. I’ve implemented several production-grade SPAs and SSR applications using React.js, and structured scalable frontend architectures using Next.js. My daily stack includes component-based development, state management, and optimization techniques in React.js/Next.js environments. I also work with: Task parallelization and scheduling in C#; Virtual machine management via SSH; Writing and executing SH, SQLPLUS, and RMAN scripts; Developing internal APIs in C# to support automation and scripting; Memory leak detection using diagnostic tools; Azure (Functions, CosmosDB, AD B2C); AWS (SES, SQS); SQL Server, PostgreSQL. Whether it's creating RESTful APIs with C#, building interactive frontends in React.js, or deploying fullstack apps using Next.js, I deliver clean, efficient, and maintainable code with a focus on performance and scalability.

𝙋𝙚𝙧𝙛𝙤𝙧𝙢𝙖𝙣𝙘𝙚 𝙞𝙨𝙨𝙪𝙚𝙨, 𝙢𝙚𝙨𝙨𝙮 𝙨𝙩𝙖𝙩𝙚 𝙢𝙖𝙣𝙖𝙜𝙚𝙢𝙚𝙣𝙩, 𝙤𝙧 𝙘𝙤𝙙𝙚 𝙩𝙝𝙖𝙩’𝙨 𝙝𝙖𝙧𝙙 𝙩𝙤 𝙚𝙭𝙩𝙚𝙣𝙙 — 𝙘𝙤𝙢𝙢𝙤𝙣 𝙘𝙝𝙖𝙡𝙡𝙚𝙣𝙜𝙚𝙨 𝙞𝙣 𝙜𝙧𝙤𝙬𝙞𝙣𝙜 𝘼𝙣𝙜𝙪𝙡𝙖𝙧 𝙖𝙥𝙥𝙨. I am Senior Angular Developer with 9+ years of experience across MVPs, SaaS products, and enterprise systems. I work with existing codebases and new builds, focusing on structure, performance, and clean architecture. Core Stack: Angular (v2+), TypeScript, RxJS, NgRx, Node.js 🤩 𝙒𝙝𝙖𝙩 𝙄 𝙖𝙘𝙩𝙪𝙖𝙡𝙡𝙮 𝙙𝙚𝙡𝙞𝙫𝙚𝙧 ✉️ Scalable SaaS platforms & MVP development High-performance Angular front-end architecture Complex data-driven dashboards & real-time systems Full-stack applications with Node.js / REST / GraphQL Clean, maintainable code with low technical debt Fast, responsive UI with excellent UX & performance 𝘾𝙤𝙧𝙚 𝙀𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚 🏆 Front-End / Angular Angular (2–21), TypeScript (strict), JavaScript (ES2025), Standalone Components, Angular Signals, RxJS, NgRx (Store, Effects, Component Store, Signal Store), Zoneless Angular, SSR (Angular Universal), Hydration 𝙁𝙪𝙡𝙡-𝙎𝙩𝙖𝙘𝙠 𝙖𝙣𝙙 𝘽𝙖𝙘𝙠𝙚𝙣𝙙 𝘾𝙤𝙡𝙡𝙖𝙗𝙤𝙧𝙖𝙩𝙞𝙤𝙣 Node.js, Express, NestJS REST API development, GraphQL (Apollo) Authentication, RBAC, API design 𝘼𝙧𝙘𝙝𝙞𝙩𝙚𝙘𝙩𝙪𝙧𝙚 𝙖𝙣𝙙 𝙋𝙚𝙧𝙛𝙤𝙧𝙢𝙖𝙣𝙘𝙚 Scalable architecture design Lazy loading, code splitting Performance optimization & profiling Memory optimization High-load systems & real-time apps 𝙐𝙄 / 𝙐𝙓 / 𝘿𝙚𝙨𝙞𝙜𝙣 𝙎𝙮𝙨𝙩𝙚𝙢𝙨 HTML5, SCSS, CSS Grid, Flexbox Angular Material, CDK Custom design systems Responsive & adaptive layouts 𝙍𝙚𝙖𝙡-𝙏𝙞𝙢𝙚 & 𝘿𝙖𝙩𝙖 𝙎𝙮𝙨𝙩𝙚𝙢𝙨 WebSockets, streaming data Data visualization dashboards Complex state management (NgRx + RxJS) 𝙏𝙚𝙨𝙩𝙞𝙣𝙜 & 𝙌𝙪𝙖𝙡𝙞𝙩𝙮 Jest, Cypress, Jasmine, Karma, Vitest Unit, Integration, E2E testing (Playwright) Code review, refactoring, tech debt reduction 𝙏𝙤𝙤𝙡𝙨 & 𝙒𝙤𝙧𝙠𝙛𝙡𝙤𝙬 Nx monorepos, Vite GitHub, GitLab, Bitbucket Jira, Sentry, Cloudflare, Google Analytics Experience Highlights 𝙄’𝙫𝙚 𝙬𝙤𝙧𝙠𝙚𝙙 𝙤𝙣 👔 SaaS platforms for logistics, compliance, and analytics Enterprise systems with complex workflows and high data volume Real-time trading platforms with WebSocket streaming and high-frequency UI updates CRM systems and productivity tools with large-scale data manipulation ✔️ Defining front-end architecture ✔️ Stabilizing large codebases ✔️ Improving performance and load time ✔️ Reducing technical debt ✔️ Mentoring developers and setting engineering standards 𝙃𝙤𝙬 𝙄 𝙖𝙥𝙥𝙧𝙤𝙖𝙘𝙝 𝙥𝙧𝙤𝙟𝙚𝙘𝙩𝙨 🔧 I don’t just “build features”, I: Analyze product and business requirements Design scalable architecture from the start Prevent future bottlenecks and tech debt Ensure smooth collaboration with backend & product teams Deliver predictable, maintainable, production-ready systems Let’s talk 💬 If you’re building a SaaS product, MVP, or scaling an existing platform, I can help you design and deliver a solution that will not break as your product grows 💪 Keywords 🐯 Angular Developer, Senior Angular Engineer, Angular Front-End Developer, Full Stack Developer, JavaScript Developer, TypeScript Developer, Front-End Engineer, Software Engineer, Angular (v2+), Angular CLI, Angular Universal, Angular Signals, Standalone Components, RxJS, NgRx, State Management, Reactive Programming, HTML5, CSS3, SCSS, Tailwind CSS, CSS Grid, Flexbox, Responsive Design, Pixel-Perfect UI, Cross-Browser Compatibility, UI Development, UX Optimization, SPA, PWA, SSR, Hydration, Web Performance, Node.js, NestJS, Express.js, REST API, GraphQL, API Integration, Microservices, Authentication, JWT, OAuth 2.0, WebSockets, Real-Time Applications, PostgreSQL, MongoDB, Firebase, Performance Optimization, Lazy Loading, Code Splitting, High Load Systems, Scalable Architecture, SaaS Development, MVP Development, Enterprise Applications, Data Visualization, Dashboards, Testing, Jest, Cypress, Vitest, CI/CD, Docker, AWS, Git, Agile, Refactoring, Clean Code, Scalable Systems

I'm a Senior Full-Stack Developer with 10 years of experience in building modern, scalable, and user-centric web applications. My core expertise lies in React, TypeScript, and Next.js on the frontend, with strong backend experience in Node.js and Ruby on Rails. Over the years, I've led frontend teams, mentored junior developers, and delivered complex projects from idea to production. I've worked across various domains—from SaaS platforms and FinTech applications to marketplaces, internal tools, and mobile-friendly websites. My code is clean, maintainable, and optimized for long-term scalability. I love collaborating with product and design teams to ship high-quality, impactful features that drive results. 🎨 Frontend Skills: React, TypeScript, Next.js, GraphQL, Chakra UI, Vue, SCSS, Figma ⚙️ Backend Skills: Node.js, Ruby on Rails, Express.js, GraphQL, REST APIs, PostgreSQL, MongoDB 🚀 DevOps & Tools: GitHub Actions, Heroku, DigitalOcean, Docker 🤝 Soft Skills: Team leadership, sprint planning, mentoring, tech consulting Let's build something great together!

AI Developer specializing in Generative AI, Computer Vision, and Audio AI systems. I design and deploy production-grade AI solutions built from scratch for image, video, audio, and multimodal applications. My work focuses on system-level development: from architecture design and model training to optimization and deployment, delivering scalable AI components ready for real-world environments. Core Expertise Generative AI Systems ▪️ Diffusion-based image and video generation (SDXL, FLUX, ControlNet) ▪️ Controlled generation, inpainting, style transfer ▪️ Text-to-video and 3D generation pipelines ▪️ Neural speech synthesis and AI audio generation ▪️ Synthetic data generation for model training Computer Vision ▪️ Object detection, tracking, and segmentation ▪️ OCR, pose estimation, face recognition ▪️ 3D reconstruction and depth estimation ▪️ Real-time and edge-optimized vision systems Audio AI & DSP ▪️ Audio segmentation and source separation ▪️ Spectrogram-based modeling and transformer audio embeddings ▪️ Speech recognition and synthesis systems ▪️ Feature-driven audio analysis pipelines ▪️ Cross-modal (audio–vision–text) modeling Machine Learning & Architecture ▪️ Custom neural network architecture design (CNNs, U-Nets, Transformers) ▪️ End-to-end ML lifecycle: data strategy → training → validation → deployment ▪️ Performance optimization for accuracy, latency, and hardware constraints Deployment & Edge Systems ▪️ Cloud, on-premise, and edge deployment ▪️ Dockerized inference services ▪️ ONNX / TensorRT optimization ▪️ Mobile and embedded AI systems What I Deliver ▪️ Custom AI system development (from scratch) ▪️ Structured R&D and technical validation ▪️ Production-ready ML / CV / multimodal pipelines ▪️ Scalable architecture aligned with product and business goals