🚀 Senior Full Stack Developer | Cloud Architect | AI Integration Specialist 💼 14+ years of professional software development experience ⚙️ C#, .NET, ASP.NET Core, Node.js, PHP 🎨 React, Angular, Next.js, TypeScript 🤖 OpenAI API, Hugging Face, Pinecone, FAISS, n8n, Zapier ☁️ Azure, AWS, CI/CD, scalable architecture 🔌 Google APIs, QuickBooks, Twilio, Zoho CRM, SendGrid Hi, I’m Senior Full Stack Developer with 14+ years of experience building, modernizing, and scaling web applications. I specialize in ASP.NET Core, C#, React, Angular, Next.js, cloud architecture, API integrations, and practical AI solutions. I help businesses build reliable web applications and add AI-powered features such as AI chatbots, document search, RAG-based assistants, workflow automation, smart dashboards, and AI-powered SaaS functionality. WHAT I CAN HELP YOU WITH * Building scalable web applications from scratch * Modernizing legacy .NET, ASP.NET MVC, Web Forms, or PHP systems * Developing secure REST APIs and backend services * Creating responsive frontends with React, Angular, Next.js, and TypeScript * Integrating third-party APIs such as Google APIs, QuickBooks, Twilio, Zoho CRM, SendGrid, and Zapier * Adding AI features using OpenAI API, Hugging Face, Pinecone, FAISS, n8n, and Zapier * Designing databases using SQL Server, MySQL, PostgreSQL, MongoDB, Redis, and Elasticsearch * Deploying applications to Azure and AWS * Leading teams and reviewing architecture, code quality, and technical decisions CORE SKILLS Backend: C#, .NET, ASP.NET Core, ASP.NET MVC, Web API, Node.js, PHP, Python Frontend: Angular, React, Next.js, TypeScript, JavaScript, HTML5, CSS3 Databases: SQL Server, MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch Cloud & DevOps: Azure, AWS, GitHub Actions, GitLab CI/CD, Jenkins, Azure DevOps, AWS CodePipeline AI & Automation: OpenAI API, Hugging Face, Pinecone, FAISS, RAG, n8n, Zapier Architecture: Microservices, REST APIs, SOLID principles, clean architecture, performance optimization WHY WORK WITH ME? * I bring both hands-on development and architecture-level thinking * I can join an existing team or independently own a project * I write clean, maintainable, scalable code * I understand business goals, not just technical tasks * I communicate clearly and keep projects moving Whether you need a new application, legacy system upgrade, AI integration, API automation, cloud deployment, or long-term technical partner, I can help you build it properly. Let’s discuss your project and find the best technical approach.

There's no such thing as impossible integration. I solve the API integration and payment automation projects other developers give up on, from legacy banking systems to blockchain and crypto payouts. I bring 22+ years of 🌐 Web Development experience, including 18+ years with ⚙️ Custom PHP and 16+ years with 📝 WordPress and 🛠️ API Integration. I've built pipelines processing over 1,200,000 records at a time and connected systems ranging from 1974-era nacha banking files to modern stablecoin payout rails. Based in Washington State, I work 30-45+ hours a week during American business hours and adapt fast to whatever a project requires. ==================================== ⚙️ CUSTOM SCRIPTING & AUTOMATION Cron-based processing, data pipelines, CSV/blockchain reconciliation tools, web scraping, IMAP email automation, analytics dashboards (Chart.js, DataTables), Cloudflare Workers, Twilio SMS / A2P 10DLC. If you do it by hand twice a week, I'll script it to run itself - exactly on your schedule. ==================================== 🛠️ COMPLEX & CUSTOM API INTEGRATIONS REST, SOAP, GraphQL, webhooks, JSON/XML, OAuth2, HMAC signatures, token refresh, rate limits, retries - the parts that break in production. From one-way pushes to full two-way synchronization, real-time or batch. Strong focus on authentication, error handling and personal data security. Pipelines processing 1,200,000+ records at a time with automatic updates down to the minute. ==================================== 💳 PAYMENT SYSTEMS DEVELOPMENT Payment gateways and checkout flows: Stripe, PayPal, Square, First Data / Fiserv, Plaid, Seamless Chex, high-risk merchant gateways, subscription billing, ACH / NACHA files, webhook and chargeback handling, WooCommerce / WHMCS / Shopify gateway plugins. Crypto payments: USDC / PYUSD / stablecoin payout systems, multi-chain (Ethereum, Polygon, BSC), Web3, Coinbase, NowPayments, Etherscan, Tatum, on-chain reconciliation. ==================================== Some API integrations I have experience with: Ahrefs API, Amazon API Gateway, Amazon AWS API, Amazon Lambda API, Amazon PA API, Amazon S3 API, Ankr API, Bank of America API, BigCommerce API, Brevo API, Bright Data API, ChatGPT API, Cloudflare API, Coinbase API, Detroit Trading API, Dukascopy API, Dynadot API, eBay Product API, Envato API, Ethereum API, Etherscan API, First Data API, Fiserv API, GoDaddy API, Google Places API, HubSpot API, Jobber API, Lead Prosper API, MaxMind API, Meta Marketing API, Modern Dropship API, NameSilo API, NowPayments API, OpenAI API, PayPal API, Plaid API, Polygon API, Polygon Scan API, Relograde API, RiskPay API, Round Sky API, Samsara API, Seamless Chex API, SendGrid API, Shopify API, Slack API, Square API, Stripe API, Supabase API, Tatum API, Thumbtack API, Trulia API, Twilio API, Web3 API, WhatsApp Cloud API, WooCommerce API, Zillow API, and more. ==================================== There's a reason for my Job Success Score: I get it right the first time. If your last developer said it can't be done, send me the docs. Every automation I build saves you time and money from day one.

🚀I build React and Next.js applications that load in under 2 seconds and scale to millions of users. 💼 9+ years experience | 80+ projects delivered My applications serve 600K+ monthly users with 99.9% uptime. Clients report 35% higher conversion rates and 50% faster page loads. 🧩 FRONTEND DEVELOPMENT ⚛️ React.js & Next.js Production-grade applications with SSR, SSG, ISR. TypeScript architectures scaling from MVP to enterprise. Performance optimization achieving sub-200ms TTI and Core Web Vitals 90+. 🧠 React Flow Node-based editors, workflow builders, and diagram systems. Custom nodes handling 500+ elements without performance issues. Real-time collaboration via WebSocket. 🎨 UI Engineering Pixel-perfect Figma implementations using Tailwind CSS, SCSS, Styled Components. Responsive designs across 20+ devices. Storybook documentation and WCAG 2.1 AA compliance. 🔗 GraphQL & APIs Apollo Client and React Query implementations reducing API calls by 40%. Optimized REST & GraphQL integrations with caching. 🧱 BACKEND DEVELOPMENT Symfony (PHP) Enterprise PHP applications with API Platform, Doctrine ORM, JWT authentication, and Messenger queues for background processing. 📊 RECENT OUTCOMES SaaS Dashboard: 50K+ users, 45% faster load times React Flow Builder: 100K+ daily node operations Symfony API: 2M+ monthly requests, sub-100ms response E-commerce Frontend: 32% conversion increase 🧠 MY APPROACH Architecture-first planning Strict TypeScript typing on every component Jest & React Testing Library coverage AI-accelerated development with GitHub Copilot & Cursor delivering 40% faster output without quality compromise 📢 Proactive communication with daily updates No ghosting. No missed deadlines. ⚡ Currently accepting 2-3 projects Response within 3 hours 🧰 TECHNOLOGIES React.js, Next.js, React Flow, Symfony, TypeScript, JavaScript, Tailwind CSS, SCSS, Styled Components, GraphQL, Redux, REST API, PHP, MySQL, PostgreSQL, MongoDB, Docker, Jest, Figma, AWS, Vercel, Git, WebSocket, Stripe 👉 Send project requirements with timeline and scale expectations 🔑 KEYWORDS React Developer, React.js, ReactJS, Next.js Developer, NextJS, Frontend Developer, Full Stack Developer, JavaScript, TypeScript, Node.js, PHP, Symfony Developer, Redux, GraphQL, REST API, API Development, Tailwind CSS, CSS3, HTML5, SCSS, Styled Components, React Flow, React Hooks, Responsive Design, Web Application Development, SaaS Application, Dashboard Development, Server-Side Rendering (SSR), AWS, Vercel, Docker, Git, Jest, Figma, MySQL, PostgreSQL, MongoDB, E-commerce Development, Stripe Integration, WebSocket, Performance Optimization, Core Web Vitals, Scalable Applications

Top 1% Upwork specialist in AI & Embedded Systems. I architect and build solutions using LLMs, CV, and C++/Qt on Nvidia Jetson. My focus is turning your ambitious vision into a reliable, high-performance product. As a Georgia Tech graduate with over 10 years of hands-on experience, including foundational work in the autonomous driving sector of German automotive industry, I partner directly with clients to solve their toughest technological challenges. I am committed to writing clean, efficient, and test-driven code, ensuring your project is built for scalability and long-term success. Here's where my expertise lies: ✅ Intelligent AI, LLM & Agentic Systems Generative AI & LLMs: I architect advanced solutions using the OpenAI API, Gemini, Llama 3, and custom models, specializing in Retrieval-Augmented Generation (RAG) for powerful, context-aware applications. Agentic AI: I build autonomous AI agents that can reason, plan, and execute complex tasks. Full-Stack ML: I manage the entire machine learning lifecycle, from data processing and model training (YOLO, TensorFlow, PyTorch) to robust deployment. ✅ High-Performance Computer Vision (CV) Algorithm Optimization: I have proven experience in optimizing state-of-the-art detection, tracking, and stereo vision algorithms for maximum performance on edge devices. OpenCV, NVIDIA Jetson & DeepStream: My expertise includes deploying real-time vision applications using the complete NVIDIA toolkit, including FFMPEG, GStreamer, TensorRT and DeepStream. ✅ Robust Embedded Systems & Software C++ & Qt Development: I craft high-performance, cross-platform applications with clean C++ and the Qt framework. Embedded Linux & Hardware: I am highly adept at developing for a wide range of platforms, including ROS, Nvidia Jetson, STM32/STM32MP1, Raspberry Pi, and BeagleBone. Protocol Specialist: I have worked on numerous communication protocols like CAN, CANFD, SomeIP, TAPI, Flexray, RSMP, BACnet, OPCUA, MQTT, TCP/IP, UDP/IP, RSTP, ONVIF and many others. When you hire me, you are partnering with a dedicated, top-rated expert who is personally invested in delivering results.

🚀 AI Engineer | Full Stack Developer | Automation | WordPress | Shopify | GoHighLevel Looking for a reliable technology partner who can build, automate, and scale your business? With 14+ years of professional experience, I help startups, agencies, SMBs, and enterprises transform ideas into AI-powered products, scalable software, modern web applications, mobile apps, eCommerce platforms, and intelligent business automation. I combine deep software engineering expertise with the latest AI technologies to build solutions that improve productivity, streamline operations, and deliver measurable business results. Whether you need an MVP, SaaS platform, enterprise application, AI assistant, automation workflow, or a complete digital ecosystem, I deliver secure, scalable, and production-ready solutions. What I Can Help You Build 🤖 AI Engineering • AI Applications & AI Agents • OpenAI, Claude & Gemini Integration • Model Context Protocol (MCP) • AI Chatbots & Virtual Assistants • Retrieval-Augmented Generation (RAG) • Prompt Engineering • AI Workflow Automation • AI-Assisted Software Development using Claude Code, Cursor and GitHub Copilot ⚡ Automation & Integrations • Business Process Automation • Workflow Automation using n8n, Make and Zapier • API Development & Third-Party Integrations • CRM Automation • Payment Gateway Integration • Webhooks & Custom Integrations • Data Synchronization 🌐 Full Stack Development • Custom Web Applications • SaaS Platforms • Enterprise Software • ERP & CRM Systems • REST APIs • Secure Backend Development • Modern Frontend Development 🎨 WordPress Development • Custom WordPress Development • Elementor • Gutenberg • Custom Themes & Plugins • WooCommerce • Website Optimization • Website Maintenance 🛒 Shopify Development • Shopify & Shopify Plus • Custom Theme Development • Store Setup & Migration • Custom Apps & Integrations • Performance Optimization 📈 GoHighLevel • Websites & Funnels • CRM Setup • Pipelines • Workflow Automation • Calendars • Forms & Surveys • SaaS Mode • API Integrations 📱 Mobile App Development • Flutter • React Native • Android • iOS • Cross-Platform Applications 📊 Data Engineering • Web Scraping • Data Extraction • Python Automation • Selenium • ETL & Data Processing Technologies AI & Automation OpenAI • Claude • Gemini • AI Agents • MCP • LangChain • Claude Code • Cursor • GitHub Copilot • n8n • Make • Zapier Frontend React • Vue • JavaScript • TypeScript • HTML5 • CSS3 • Tailwind CSS • Bootstrap Backend Laravel • PHP • Python • Django • NodeJS CMS & eCommerce WordPress • WooCommerce • Shopify • Shopify Plus • GoHighLevel Databases MySQL • PostgreSQL • MongoDB Cloud & DevOps AWS • Docker • Git • CI/CD Why Clients Choose Me ✔ 14+ Years of Professional Experience ✔ Top Rated Plus on Upwork ✔ AI-First Development Approach ✔ WordPress, Shopify & GoHighLevel Specialist ✔ Scalable & Maintainable Software ✔ Clear Communication & Reliable Delivery ✔ Long-Term Technical Partnership I don't just build software—I help businesses leverage AI, automation, and modern technologies to streamline operations, reduce manual work, improve customer experiences, and accelerate growth. Let's build something exceptional together.

Top 1% Upwork EXPERT-VETTED Data & Solution Architect. For over 15 years, I've worked with data, focusing the last 7 years as a Data Architect on managing high-load and big-data projects. I oversee systems that serve hundreds of millions of users and manage petabytes of data, along with overseeing infrastructure budgets of over 1.5 million USD each year. In the past 8 years on Upwork, I have completed more than 100 projects with a 100% Job Success Score and a 94%+ client return rate. SERVICES ✅ Data Engineering ✅ AI/ML ✅ AI Adoption & GenAI ✅ Predictive analytics ✅ High-load Data Scraping ✅ Data Integration - seamless connection through APIs ✅ Data Management – ETL pipelines, Data Warehousing, Data Lakes, DataOps ✅ IT Infrastructure & Solution Architecture ✅ DevOps for Performance Optimization and Cost Reduction STACK & TECHNOLOGIES Core stack: Python Data Warehousing: Redshift | BigQuery | Snowflake | Teradata Data Lakes: Hadoop | Amazon S3 | Azure Data Lake Storage | Google Cloud Storage ETL Tools and Data Pipelines: Databricks Workflows | AWS Glue | Google Cloud Dataflow Big Data Processing: Spark | Hadoop | Google Dataflow | Dask | Amazon Kinesis | Kafka Databases: MySQL | PostgreSQL | Google BigQuery | MongoDB | DynamoDB | Redis Data Analysis and Machine Learning: Pandas | NumPy | Dask | SciPy | OpenCV | TensorFlow | PyTorch | Scikit-learn | XGBoost | Keras | spaCy GenAI: OpenAI GPT-3 | GPT-4 | Lama 2 | Llava | Bard | Mistral | Anthropic Visualization Tools and Libraries: Power BI | Looker | Quicksight | Grafana | Plotly | D3.js | Dash | Matplotlib DevOps and DataOps AWS | GCP | Azure | Docker | Kubernetes | Amazon ECS | Jenkins | GitLab CI/CD | GitHub CI/CD | Bitbucket Pipelines | Ansible | Terraform | CloudFormation | Prometheus | Grafana | Datadog | Zabbix | ELK Stack | Elasticsearch | Logstash | Kibana | Graylog Web Development Front-End: React.js | Redux | Redux-Saga Back-End: Python | Django Rest Framework | Flask We use the Agile approach to ensure great products delivery. As our benefits, we provide the guarantee, NDA signing, and post-service for delivered products. Want to work together? I’d love to hear from you!

I am a Node.js developer with over 15 years of Full-Stack development experience. I've built 220+ web projects. I have 10+ years in Node.js development. Besides, I specialize in SaaS, Dashboards, Healthcare, Marketplaces, MarTech, FinTech, Real Estate, mobile apps, and enterprise software. 🏆 112k+ billed Full-Stack Development 💎 $4m+ earned in Full Stack Development 🥇 Senior full stack developer in React.js Node.js AWS Next.js Nest.js JavaScript Developer 📢 Our client, Eventbrite company, boasting $580M in revenue, said about working with us: "𝗧𝗵𝗲 𝗖𝗹𝗼𝗰𝗸𝘄𝗶𝘀𝗲 𝘁𝗲𝗮𝗺 𝘄𝗮𝘀 𝗲𝘅𝗰𝗲𝗹𝗹𝗲𝗻𝘁. 𝗪𝗲 𝗮𝗿𝗲 𝘁𝗵𝗿𝗶𝗹𝗹𝗲𝗱 𝘄𝗶𝘁𝗵 𝘁𝗵𝗲 𝗳𝗶𝗻𝗮𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁". As a skilled Node.js Developer, I’m proficient in AWS, Serverless, and Microservices, leveraging NestJS and ReactJS to craft scalable systems, and I specialize in building reliable solutions as a Node.js Developer using Vue.js Node.js, NestJS, and React.js. With Nest.js, I build strong server-side apps that have a smart structure and fast API routing. As a Node.js developer, I rely on TypeScript and Nest.js’s detailed docs to write code that’s easy to read and maintain. I also plug in extra Nest.js modules to simplify linking up with databases and outside services, making development quicker and more organized. I'm a skilled Node.js backend JavaScript developer with a focus on Node.js, crafting scalable and efficient server-side solutions. I harness MongoDB alongside Node.js to deliver versatile NoSQL database systems and possess deep knowledge of SQL for overseeing relational databases, ensuring data remains consistent and reliable. ➤ 𝗖𝗹𝗼𝗰𝗸𝘄𝗶𝘀𝗲 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗧𝗲𝗮𝗺 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀 💯 100% Top Rated Plus - 🎯 Top 3% of companies 📢 50% of our clients work with us for over 3 years 💎 84% of our clients strongly recommend our Node.js expertise 🥇 Awarded 'Best Upwork Agency in Dnipro' by Upwork 4 years running 🏆 Named 'Top Ukraine Development Company' by Clutch 3 years in a row 📱💻 310+ successfully completed projects over 10 years with a 4.9🏆 3rd-party rating 👉 𝗪𝗵𝘆 𝗬𝗼𝘂 𝗦𝗵𝗼𝘂𝗹𝗱 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 𝗔𝘀 𝗬𝗼𝘂𝗿 𝗡𝗼𝗱𝗲.𝗷𝘀 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 ☑️ Latest Technologies: As a Node.js Developer, I harness Node.js, NodeJS, React, Vue.js, MongoDB, and Angular to build modern, scalable web applications. My expertise in NodeJS ensures your business stays competitive. ☑️ End-to-End Product Development: With comprehensive skills in Node.js for back-end and front-end technologies, I deliver fully integrated solutions as a Node.js Developer. Using NodeJS, I ensure cohesive user experiences and robust performance for faster project delivery. ☑️ Expertise Across Multiple Industries: As a Node.js Developer, I’ve completed projects in MarTech, Real Estate, Logistics, Healthcare, Travel and Hospitality, and FinTech using Node.js. My adaptability with NodeJS tailors strategies to your market. 𝗡𝗼𝘁𝗮𝗯𝗹𝗲 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 ✔ Customized AI chatbot SaaS built with Node.js and OpenAI ✔ Multi-tenant fleet management software powered by NodeJS React Developer ✔ Logistic using Node.js ✔ Fintech solutions with a strong UX focus, developed as a Node.js JavaScript Developer 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗗𝗼 𝗙𝗼𝗿 𝗬𝗼𝘂 𝗔𝘀 𝗮 𝗡𝗼𝗱𝗲.𝗷𝘀 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 ✔ Develop web apps and websites from scratch using Node.js ✔ Handle client-side and server-side development with NodeJS Backend Developer ✔ AI Chatbot Development | AI Chatbot Developer ✔ Design application architecture tailored to your needs using Node.js ✔ Integrate third-party services (payment systems, Google services, social networks) with NodeJS Full Stack Developer ✔ Optimize high-load apps for speed, scalability, reliability, and security as a Node.js Developer ✔ Write comprehensive unit tests with Node.js for optimal user experiences As a passionate full stack developer Node.js Developer, I embrace new challenges and technologies. If your project requires unfamiliar tools, I’ll master them with Node.JS to deliver results. Have an idea needing skilled implementation? 𝗟𝗲𝘁’𝘀 𝗱𝗶𝘀𝗰𝘂𝘀𝘀 𝗵𝗼𝘄 𝗺𝘆 𝗡𝗼𝗱𝗲.𝗷𝘀 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗰𝗮𝗻 𝗯𝗿𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝘃𝗶𝘀𝗶𝗼𝗻 𝘁𝗼 𝗹𝗶𝗳𝗲! 👌

Senior .NET Full-Stack Developer with 8+ years of experience building SaaS platforms, ERP systems, REST APIs, AI-powered applications, and enterprise software used by thousands of users. I help businesses launch scalable, secure, and cloud-ready solutions using ASP.NET Core, C#, Azure, React, Angular, and modern AI technologies. My expertise spans ASP.NET Core, .NET 8/9, C#, microservices, cloud infrastructure, enterprise integrations, and modern frontend frameworks including React, Angular, Blazor, and Next.js. I have successfully delivered scalable applications ranging from fintech and logistics platforms to healthcare, eCommerce, AI-powered SaaS products, and enterprise workflow systems. In addition to backend and frontend engineering, I have strong experience integrating AI-powered solutions into enterprise applications, including intelligent chatbots, recommendation engines, predictive analytics, workflow automation, computer vision, and AI-assisted decision systems. I have worked with AI integrations, automation frameworks, and cloud AI services to improve operational efficiency and user engagement. Languages C#, ASP.NET Core, .NET Framework, .NET 8/9, TypeScript, JavaScript (ES6+), SQL, T-SQL, Python, HTML5, CSS3, Dart, JSON Frontend Technologies React.js, Next.js, Angular, Blazor, Razor Pages, MVC, Bootstrap, Tailwind CSS, Material UI, Shadcn/UI, jQuery Backend & Frameworks ASP.NET Core MVC, ASP.NET Web API, Entity Framework Core, LINQ, SignalR, MediatR, Dapper, Minimal APIs, gRPC, MassTransit, RabbitMQ, Hangfire, Quartz.NET, Node.js, Express.js, NestJS Cloud, DevOps & Infrastructure Microsoft Azure, Azure DevOps, AWS Services, Docker, Kubernetes, GitHub Actions, Firebase, Cloud Functions, IIS, Nginx, CDN & Security Platforms Databases & Storage Microsoft SQL Server, PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, SQLite, Firebase Firestore, Elasticsearch, Cloud Storage Solutions Integrations & APIs Payment Gateways, Logistics APIs, Shipping Integrations, GPS & Fleet Tracking Systems, ERP/CRM Integrations, Marketplace APIs, Communication Platforms, AI Services, Authentication Providers, Real-time Notification Systems Tools & Platforms Visual Studio, VS Code, Git, GitHub, Bitbucket, Jira, Postman, Swagger/OpenAPI, Docker Desktop, Azure Portal, Firebase Console Architecture & Methodologies Microservices Architecture, Clean Architecture, Domain-Driven Design (DDD), CQRS, Event-Driven Architecture, SOLID Principles, MVC, MVVM, Agile, Scrum, Kanban Core Expertise • Enterprise SaaS Platforms • Fintech & Payment Applications • Logistics & Transportation Management Systems • Fleet Management & Real-time Tracking • eCommerce & Marketplace Solutions • Healthcare & Telemedicine Platforms • AI-Powered Applications • CRM / ERP Systems • Booking & On-demand Platforms • IoT & Device Integrations • Warehouse & Inventory Management • Multi-tenant Applications • Secure API Development • Cloud-native Applications • Real-time Applications & Notifications AI development: • OpenAI API • GPT-4o • RAG • Vector Databases • AI Agents • LangChain • MCP • Cursor AI • Workflow Automation • AI Chatbots

⭐ ⭐ ⭐ ⭐ ⭐"Aleksandre did a great job coding a Python/Flask web app, adding AWS integrations, and building AWS CDK code. We’d be happy to work with this freelancer again." I have 3+ years of experience in Software Engineering mostly in Python/JS.🧑‍🚀 My specialization areas are Web Development and Automation/Web Scraping. My main focus is on Web Development and the stack is Django, FastAPI, Postgres, Docker, VueJS. I'm Passionate about finding elegant solutions to complex problems. Areas of expertise: 🔶 Web Development 🔶 Automation/Web Scraping Tools & Technologies: ✔️ Django, DRF, FastAPI ✔️ Postgres, MySQL ✔️ React, JS, Redux, Vue, Pinia ✔️ Docker ✔️ AWS ✔️ Linux ✔️ PayPal and other payment services. ✔️ Bootstrap, HTML5

$700K+ delivered on Upwork across 145 projects with a 100% Job Success Score. I architect and ship production AI systems, Voice AI agents handling live calls under 2-second latency, computer vision platforms processing 8M+ daily events, and full-stack products running in production for years. What I build: 𝗩𝗼𝗶𝗰𝗲 𝗔𝗜 & 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗔𝗴𝗲𝗻𝘁𝘀 Real-time voice pipelines combining speech-to-text, LLM reasoning, and natural voice synthesis. I built SloanConnect, an AI telephony platform that automates insurance verification calls end-to-end, navigates IVR systems, holds dynamic conversations with representatives, and scales to hundreds of concurrent calls. Sub-2-second response time, encrypted compliance handling, production-stable. 𝗖𝗼𝗺𝗽𝘂𝘁𝗲𝗿 𝗩𝗶𝘀𝗶𝗼𝗻 𝗮𝘁 𝗦𝗰𝗮𝗹𝗲 Lead AI Engineer on two production CV platforms: Adlytic - privacy-safe in-store retail analytics with GDPR-compliant pipelines, heatmaps, and POS integration, and SportsEye - real-time soccer analytics from broadcast feeds with 96% accuracy across player tracking, field mapping, and tactical metrics with zero on-field hardware. 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 Hybrid recommendation engines on PySpark processing 8M+ daily impressions. NLP and sentiment systems wired into live dashboards. Healthcare process automation with HIPAA-aligned data handling. Models built to live in real environments, not notebooks. 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗟𝗟𝗠 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀 (𝗖𝗹𝗮𝘂𝗱𝗲, 𝗢𝗽𝗲𝗻𝗔𝗜, 𝗺𝘂𝗹𝘁𝗶-𝗺𝗼𝗱𝗲𝗹) End-to-end AI agents shipped to production: a Shopify + Amazon SP-API customer service agent with order lookup, refunds, returnless-refund policies, Slack/Email approval gates, and Klaviyo sync. Multi-step LLM pipelines with tool use, RAG, function calling, and human-in-the-loop checkpoints. I design these as systems, not single prompts, and I'm comfortable across Claude, OpenAI, and open-weight models depending on what fits the workload. 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗙𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻𝘀 Every AI product needs scaffolding that holds. I've shipped Django/Node/React/Next.js platforms that ran 3+ years in production, Alchemist Real Estate, audIT.app, and a long-running B2B SaaS that grew from MVP to hundreds of users across $195K+ in contracted development. Distributed backends, REST/GraphQL APIs, AWS-native deployment, data pipelines, and the DevOps to keep them stable. 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 As Lead Engineering Architect, I stay hands-on through the whole lifecycle, discovery, architecture, core implementation, deployment, and the long tail. I don't hand off and disappear. Most of my Upwork work is repeat business or long contracts measured in years, not weeks. If you're building a Voice AI agent, a computer vision platform, an LLM-driven workflow, or a full-stack AI product that needs to survive real load - let's talk.