Hi! I’m Elena - I build automation systems, scraping pipelines, and backend services that work under real-world conditions, high load, anti-bot protection, and unstable data sources. Including high-load Telegram bot systems used for real-time data processing and distribution. With 3 years of experience in automation engineering, I don't just write scripts; I build stable, self-healing systems that handle thousands of requests and save hundreds of manual hours. 💡 Recent Track Record: • Built a phishing analysis engine for Microsoft Sentinel used in a production security workflow • Built a Telegram bot ecosystem serving 9,000+ users with stable performance under load • Developed scraping systems bypassing Cloudflare and anti-bot protections • Delivered 30+ automation projects: from simple bots to full backend systems with APIs and databases What I bring to your project: • I design systems that keep working when websites change or add protection • I reduce scraping costs and increase success rates under heavy traffic • I build automation that scales, not scripts that break after a week Core Stack: ✔️ Bots: Aiogram 3, Telethon, Pyrogram (High-load architecture) ✔️ Scraping: SeleniumBase (UC Mode), Playwright, Scrapy ✔️ Backend: FastAPI, Flask, MongoDB, PostgreSQL ✔️ Infra: Docker, Linux (VPS/Systemd), Git ✔️ Async Systems: asyncio, high-concurrency pipelines I focus on results: stable automation, higher success rates, and systems that don’t require constant fixing. Let’s turn your manual routine into a fully autonomous system.

I'm a senior fullstack developer with 6+ years of experience delivering scalable web applications, data platforms, and enterprise solutions for clients across various industries. ***WHAT I CAN DO FOR YOU*** 💎 Build complete fullstack applications from concept to deployment (Django/React, MERN, Laravel/WordPress) 💎 Develop high-performance data processing systems and ETL pipelines handling billions of records on a daily basis 💎 Create AI-powered features and automation (ChatGPT integration, ML models, intelligent workflows) 💎 Build IoT platforms and embedded systems with real-time monitoring dashboards 💎 Refactor & modernize legacy systems and integrate complex third-party APIs 💎 Deploy and scale applications on AWS with proper DevOps practices 💎 Develop custom scraping solutions and automation bots for data collection and workflow optimization 💎 Develop custom software solutions tailored to your specific business needs ***KEY ACHIEVEMENTS*** 🏆 Built I-NERGY: AI-powered energy grid platform using Django/React/PyTorch that won 1st place among 126 submissions in an EU-funded project 🏆 Built UrbanData ETL pipelines processing 100M+ daily adtech records and developed cross-platform SDKs with GDPR compliance on AWS 🏆 Developed RES4CITY learning management system serving tens of thousands of students across dozens of European universities with microservices architecture 🏆 Built ViziDrive EV charging platform with charging stations deployed in the EU and actively used, using Node.js microservices and Stripe integration 🏆 Transformed RenonBill Excel/VB financial models into modern Django applications with Monte Carlo simulations 🏆 Built RENEW smart home IoT platform using EMQX, FastAPI, and real-time dashboards 🏆 Developed over a dozen different custom scraping solutions and automation bots for various clients 💻 TECHNICAL STACK: AI/ML, Python/Django, FastAPI, JavaScript/Node.js, TypeScript, React, MERN Stack, PHP/Laravel, WordPress, MySQL/PostgreSQL, Docker, AWS (SES/S3/ECS/Aurora/RDS), Redis, EMQX/MQTT, PyTorch, Numpy, C++, Shell, Linux, Git, JIRA, Stripe API, Grafana, Plotly, IoT/Embedded Systems, API Integration, Web Scraping, Bot Development, Selenium, Playwright, Puppeteer, Automated Testing, Agile/Scrum Development

⚠️ Available only for those who value and seek quality work. Top Rated Plus Full-Stack Python Developer | AI Agent Specialist | SaaS Architect with great software development knowledge and good design sense, in developing AI-powered web apps and enterprise-level software architectures. ☑️ Top 3% talent of Upwork ☑️ 100% Job Success Rating ☑️ 5-star Rating on Upwork 💡 𝗪𝗵𝗮𝘁 𝗜 𝗢𝗳𝗳𝗲𝗿 As a Full Stack Developer and AI Engineer, I bring deep expertise in Python, Django, FastAPI and frontend frameworks like React and Next.js, backed by solid DevOps and cloud experience (AWS, Azure). I develop: - AI-Driven SaaS platforms — from MVP to scale - AI agents & automation using GPT/LLMs - Robust APIs and microservices with FastAPI/Flask - Scalable backend systems & secure cloud deployments - Responsive UIs with React, Next.js, or Vue With 6+ years of experience, I offer end-to-end product ownership, eliminating the need for multiple developers. Working worldwide, I help customers from various business domains through coding, building their software that helps them manage or software as a service SaaS, and filling expertise plus technological gaps. Here are the main industries: Healthcare & Telemedicine eCommerce & Retail EdTech & eLearning FinTech & Finance Manufacturing & Logistics Real Estate Platforms E-sports & Gaming Fleet Management Food & Beverages 𝗖𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝘃𝗲 𝗼𝘃𝗲𝗿𝘃𝗶𝗲𝘄 𝗼𝗳 𝘁𝗼𝗼𝗹𝘀 𝘁𝗵𝗮𝘁 𝘄𝗶𝗹𝗹 𝗴𝗿𝗲𝗮𝘁𝗹𝘆 𝗯𝗲𝗻𝗲𝗳𝗶𝘁 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁: 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀 & 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: Python, Django, FastAPI, Flask, JavaScript, ReactJS, Next.Js, HTML/CSS, Bootstrap, MaterialUI, ReactNative, Redux, Node.js, Lumen 𝗧𝗲𝘀𝘁𝗶𝗻𝗴 & 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻: Pytest, Lucas, Selenium 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: CI/CD, AWS (EC2, S3, Secrets Manager, CodeDeploy), AWS Cognito, Baatch jobs and state machines, Azure DevOps, GitHub Actions, SSH, SCP, API White Listing, Sessions, 2FA, symmetric encryptions, and more. 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: OpenAI, LangChain, GPT-4, Claude, RAG, semantic search, vector DBs. 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MySQL, MSSQL, PostgreSQL, MongoDB, or AWS Dynamo DB. 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 & 𝗧𝗼𝗼𝗹𝘀: Docker, Nginx, Gunicorn, VPS Servers, SMTP Libraries, Payment Gateway Integrations, Third-Party APIs, MailChimp, mailtrap, Caching, Redis, Celery, Throttling, Elastic search, newrelic. 𝐃𝐢𝐬𝐜𝐨𝐯𝐞𝐫 𝐭𝐡𝐞 𝐛𝐨𝐮𝐧𝐝𝐥𝐞𝐬𝐬 𝐩𝐨𝐭𝐞𝐧𝐭𝐢𝐚𝐥 𝐨𝐟 𝐲𝐨𝐮𝐫 𝐏𝐲𝐭𝐡𝐨𝐧𝐬 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐰𝐢𝐭𝐡 𝐦𝐲 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞! Whether you're a dynamic powerhouse, a flourishing titan, or a pioneering luminary, I stand ready to transform your concepts with unparalleled precision and groundbreaking innovation. 🌟 𝗖𝗹𝗶𝗲𝗻𝘁 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗦𝗻𝗮𝗽𝘀𝗵𝗼𝘁 “𝐴𝑏𝑑𝑢𝑙𝑙𝑎ℎ 𝑝𝑢𝑡 𝑖𝑛 𝑒𝑥𝑡𝑟𝑎 𝑒𝑓𝑓𝑜𝑟𝑡 𝑡𝑜 𝑚𝑎𝑘𝑒 𝑠𝑢𝑟𝑒 𝑜𝑢𝑟 𝑝𝑟𝑜𝑑𝑢𝑐𝑡 𝑤𝑎𝑠 𝑠𝑢𝑐𝑐𝑒𝑠𝑠𝑓𝑢𝑙. 𝐻𝑒 𝑖𝑛𝑡𝑟𝑜𝑑𝑢𝑐𝑒𝑑 𝑆𝑤𝑎𝑔𝑔𝑒𝑟 𝑡𝑜 𝑜𝑢𝑟 𝑡𝑒𝑎𝑚, 𝑖𝑚𝑝𝑟𝑜𝑣𝑖𝑛𝑔 𝑜𝑢𝑟 𝑏𝑎𝑐𝑘𝑒𝑛𝑑 𝑑𝑜𝑐𝑢𝑚𝑒𝑛𝑡𝑎𝑡𝑖𝑜𝑛 𝑤𝑜𝑟𝑘𝑓𝑙𝑜𝑤. 𝐹𝑟𝑖𝑒𝑛𝑑𝑙𝑦, 𝑝𝑟𝑜𝑓𝑒𝑠𝑠𝑖𝑜𝑛𝑎𝑙, 𝑎𝑛𝑑 𝑔𝑟𝑒𝑎𝑡 𝑡𝑜 𝑤𝑜𝑟𝑘 𝑤𝑖𝑡ℎ.” ✅ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 - 6+ Years Full Stack Python & SaaS Experience - Top Rated Plus | 100% Job Success - Proven AI & LLM Agent Expertise - Strong Communication & UI/UX Collaboration - One Developer — Complete Product Delivery 𝗟𝗲𝘁’𝘀 𝗧𝗮𝗹𝗸 If you’re developing a Python SaaS platform, an AI-powered tool or a complex automation system, I’d love to help bring your vision to life. 📩 Invite me to your project — let’s build something exceptional.

I'm a Python developer and AI engineer with 10+ years of experience, running a 80-person agency (Go Wombat) with offices in Valencia, Tallinn, and Ukraine. Over the last few years my work has shifted heavily into AI. I build production RAG pipelines, LLM-powered products, and autonomous agent systems - not demos or prototypes that fall apart at scale, but things that run in production and get maintained long-term. Recent projects include a RAG-based troubleshooting system for a UK manufacturing client (Innovate UK funded), an AI investment research platform with OpenAI-powered analysis, LLM compliance automation for an AdTech company, and an AI music therapy product used in dementia and autism care. What I work with on the AI side: * Multi-agent systems and AI workflows using LangGraph, OpenAI Agents SDK, Claude Agent SDK, Google ADK, MCP, OpenClaw-based agents, and custom agent frameworks for tool and data integration * Production RAG systems using pgvector, Qdrant, Chroma, hybrid retrieval, reranking, knowledge graph enrichment, and RAGAS-based evaluation pipelines * Agentic automation with tool use, memory/context management, sandboxed execution, human-in-the-loop approvals, and workflow orchestration * LLM fine-tuning and adaptation with LoRA/QLoRA, synthetic datasets, domain-specific evaluation suites, and structured output validation * Working with OpenAI, Anthropic Claude, Gemini, Qwen, DeepSeek, GLM, Mistral, Kimi, and self-hosted open-weight models * LLMOps and AI observability with LangSmith, Langfuse, Opik, tracing, monitoring, alerting, evals, and regression testing * AI governance and EU AI Act readiness, including risk classification, technical documentation, audit trails, and monitoring workflows * Production deployment of AI systems with APIs, Docker, cloud infrastructure, secure integrations, and scalable backend architectures Focus areas: AI copilots, autonomous workflows, RAG platforms, internal knowledge systems, agentic tooling, AI automation, document intelligence, and customer-facing AI products. On the backend side I've been writing Python for a long time - Django, FastAPI, PostgreSQL, MongoDB, Redis, AWS (EC2, S3, Lambda, RDS, Elasticache), Docker, Kubernetes. That foundation matters a lot when you're building AI systems that need to hold up under real load and stay maintainable six months after launch. I've shipped products across healthcare, fintech, logistics, adtech, ecommerce, IoT, and SaaS. The range matters because AI problems look different depending on the domain - a compliance monitoring pipeline for an ad platform has almost nothing in common with a predictive maintenance system for factory equipment, even if both use LLMs under the hood. Because I run an agency, I can pull in the right people when a project grows beyond one person. Designers, mobile devs, data engineers - whoever the work calls for. But I stay personally involved throughout: I'm the one reading your requirements, scoping the work, and staying accountable for what gets delivered. Several of my Upwork clients have been with me for 5+ years. I mention that not as a credential but because it's the clearest signal I have that the working relationship tends to go well. If you want to talk through what you're building, I'm happy to take a look and give you an honest read before any commitment.

Most backend projects fail not from bad code, but from architecture decisions made too early and changed too late. I'm a 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗣𝘆𝘁𝗵𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗮𝗻𝗱 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 with an 𝟵+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 who builds systems designed to survive growth, not just launch day. I help startups, founders, and growing businesses build production-ready software that is scalable, maintainable, and designed for real-world usage. 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 → Full-stack web applications using Django, FastAPI, React, Next.js, and PostgreSQL → High-performance REST APIs and backend systems designed for scale and reliability → Multi-tenant SaaS products with user management, subscriptions, Stripe billing, dashboards, and role-based access control → Cloud-native deployments using Docker, AWS, CI/CD pipelines, and scalable infrastructure → Real-time applications using WebSockets, background workers, queues, and asynchronous processing → Automation platforms, browser automation, data extraction systems, and custom business workflows → AI-integrated SaaS platforms powered by OpenAI, GPT, RAG pipelines, and AI agents → AI-powered chatbots, knowledge bases, internal tools, and document processing platforms 𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞 → Clear communication and regular project updates → Clean, maintainable, and well-documented code → Production-ready architecture from day one → Scalable solutions designed for future growth → Ownership throughout planning, development, deployment, and support → Testing and quality assurance before delivery 𝗖𝗢𝗥𝗘 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 ⚙️ 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Python, Node.js, Django, FastAPI, Flask, REST APIs, GraphQL, Authentication Systems, Background Processing, Celery, Async Applications 🎨 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 React, Next.js, TypeScript, JavaScript, Tailwind CSS, Responsive Web Applications, Dashboard Development ☁️ 𝗖𝗹𝗼𝘂𝗱 & 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 Docker, AWS, CI/CD, GitHub Actions, Deployment Automation, Performance Optimization, Scalable Architecture 🗄️ 𝗗𝗮𝘁𝗮 & 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 PostgreSQL, Redis, Database Design, Query Optimization, Caching Strategies, Data Processing Pipelines 🔄 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 Web Scraping, Selenium, Playwright, Browser Automation, API Integrations, ETL Pipelines, Workflow Automation 🧠 𝗔𝗜 & 𝗟𝗟𝗠 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 OpenAI API, GPT Integration, AI Agents, RAG Pipelines, Prompt Engineering, Vector Search, AI Chatbots, Document Processing 𝗥𝗘𝗖𝗘𝗡𝗧 𝗙𝗢𝗖𝗨𝗦 → Django + React platforms for startups and growing businesses → FastAPI backend architectures for high-performance applications → API integrations connecting multiple third-party services into a unified workflow → Automation systems that eliminate repetitive manual work → AI-assisted features integrated into production SaaS products → RAG systems and AI assistants connected to company knowledge bases I work best with startups, SaaS founders, and businesses that value long-term partnerships and want software built correctly the first time. If you are building a SaaS platform, backend system, automation tool, or AI-integrated application, send me a message with your project details and I'll help you define the best technical approach before development begins.

Hello, I'm a specialized software developer with expertise in gathering from web sites to build automated trading strategies. I have extensive experience working with Python, scrapy, and selenium to scrape websites and extract relevant data for use in building trading algorithms. Additionally, I have experience working with AWS and building data pipelines for ETL and data engineering. Here are some of the specific services I offer: Web scraping: I specialize in gathering web data to build algorithmic trading strategies. I have experience using scrapy and selenium to scrape websites and extract relevant data for use in building trading algorithms. Algorithmic trading: I have experience working with metatrader and building trading strategies using Python. I can help you develop and optimize your trading algorithms for maximum profitability. Database management: I have experience working with various databases, including PostgreSQL, DynamoDB, and Redis. I can help you set up and manage your database systems for optimal performance. AWS: I have experience working with AWS and can help you set up and manage your cloud infrastructure, including EC2 instances, S3 storage, and more. Data engineering: I can help you design and build data pipelines for ETL and data engineering. I have experience working with various tools and technologies, including Apache Spark, Airflow, and more. If you're looking for a skilled and experienced developer to help you with your next project, please feel free to get in touch. I'm always happy to discuss new opportunities and help you achieve your goals.

Senior Full Stack Engineer with 6+ years of production experience building SaaS platforms, web apps, and APIs across the .NET / Angular / React / Azure stack. Top Rated on Upwork with a 100% Job Success Score across 28+ contracts. I've also been expanding into Python (FastAPI / Flask) and applied AI/ML — adding LLM features, RAG, and data pipelines to existing products. It's important to me to build long-term relationships with clients, so I'm primarily looking for long-term projects. My skills include: ✔️ Back-end: .NET 8 / C#, ASP.NET Core MVC/MVVM, Web API, SignalR, Razor, WPF, LINQ ✔️ Front-end: Angular, React, TypeScript, JavaScript, jQuery, HTML5, CSS, Bootstrap, Tailwind ✔️ Python: FastAPI, Flask, Pandas, NumPy, scikit-learn ✔️ AI / ML: OpenAI API, LangChain, LLM integration, RAG basics, prompt engineering ✔️ Cloud: Microsoft Azure — App Service, Azure Functions, Azure SQL, Cosmos DB, Azure DevOps ✔️ ORM: Entity Framework Core, Dapper ✔️ Database: SQL Server, MongoDB, PostgreSQL, MySQL, Redis ✔️ Architecture: REST API design, microservices, real-time (SignalR / WebSockets), auth (OAuth / JWT), payment integration (Stripe) ✔️ Tooling: Visual Studio, VS Code, Git, Azure DevOps, Docker ✔️ Process: Agile, Scrum, Kanban Expertise: ✔️ Web Development — REST Web API, ASP.NET Core, Angular, React ✔️ Cloud & Backend — Azure App Service, Web Servicer, Functions, SQL, AKS, Entra ID ✔️ Python + AI Add-ons — Flask / FastAPI services, OpenAI / LangChain integration, light data pipelines Send a message with your goal in two sentences, or book a consultation and we'll scope it together.

𝐄𝐱𝐩𝐞𝐫𝐭 𝐀𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐈 | 𝐋𝐋𝐌𝐬 | 𝐋𝐚𝐧𝐠𝐆𝐫𝐚𝐩𝐡 | 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 | 𝐌𝐋𝐎𝐩𝐬 | 𝐑𝐀𝐆 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬 | 𝐂𝐡𝐚𝐭𝐛𝐨𝐭𝐬 | 𝐕𝐨𝐢𝐜𝐞 𝐀𝐠𝐞𝐧𝐭𝐬 | 𝐍𝐋𝐏 | 𝐍𝟖𝐍 | 𝐙𝐚𝐩𝐢𝐞𝐫 | 𝐃𝐣𝐚𝐧𝐠𝐨 | 𝐅𝐥𝐚𝐬𝐤 | 𝐅𝐚𝐬𝐭𝐀𝐏𝐈 | 𝗢𝗽𝗲𝗻𝗔𝗜 𝗣𝗹𝗮𝘆𝗴𝗿𝗼𝘂𝗻𝗱 |𝗚𝗲𝗺𝗶𝗻𝗶 | 𝗖𝗹𝗮𝘂𝗱𝗲 I’m a Senior AI & Generative AI Engineer specializing in designing and deploying next-generation intelligent systems. I build 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀, 𝗰𝘂𝘀𝘁𝗼𝗺 𝗟𝗟𝗠-𝗱𝗿𝗶𝘃𝗲𝗻 𝗮𝗽𝗽𝘀, 𝗥𝗔𝗚 𝗽𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀, 𝗮𝘂𝘁𝗼𝗻𝗼𝗺𝗼𝘂𝘀 𝗰𝗼𝗽𝗶𝗹𝗼𝘁𝘀, 𝗮𝗻𝗱 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲-𝗴𝗿𝗮𝗱𝗲 𝗔𝗜 𝗦𝗮𝗮𝗦 platforms optimized for real business impact. I work with cutting-edge stack including 𝗢𝗽𝗲𝗻𝗔𝗜 𝗣𝗹𝗮𝘆𝗴𝗿𝗼𝘂𝗻𝗱, 𝗚𝗲𝗺𝗶𝗻𝗶, 𝗖𝗹𝗮𝘂𝗱𝗲, 𝗟𝗮𝗻𝗴𝗚𝗿𝗮𝗽𝗵, 𝗟𝗮𝗻𝗴𝗖𝗵𝗮𝗶𝗻, 𝗦𝘂𝗽𝗮𝗯𝗮𝘀𝗲 𝗔𝗜 𝘀𝘁𝗮𝗰𝗸, 𝗩𝗲𝗰𝘁𝗼𝗿 𝗗𝗕𝘀 𝗮𝗻𝗱 𝗺𝗼𝗱𝗲𝗿𝗻 𝗠𝗖𝗣-based orchestration. My Expertise Include 🔹 Build robust backends (Python, Django) and sleek frontends (React.js / Next.js) 🔹 Integrate AI tools (LangChain, OpenAI, Pinecone) powering chatbots and intelligent workflows 🔹 Connect payments (Stripe, PayPal), messaging (Twilio), maps, everything works end-to-end 🔹 Modernize legacy systems, clean code, speed boost, enhanced security. Reasons To Hire Me 🔹 I build with scale in mind, systems that grow with you 🔹 I prioritize intuitive user experience, no friction, no confusion 🔹 Performance and security are core, slow or vulnerable apps aren’t an option 🔹 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 & 𝗧𝗼𝗼𝗹𝘀 LLMs: GPT-4o, Gemini 2.0, Claude 3.5, LLaMA, Falcon, T5, BERT AI Frameworks: LangChain, LangGraph, Haystack, Transformers, FastAPI Vector DBs: Pinecone, Qdrant, ChromaDB, Weaviate Databases: Supabase, PostgreSQL, MongoDB, Redis Automation: N8N, Zapier, Airflow, Apify Frontend: React, Next.js, Streamlit, FlutterFlow Deployment: AWS, GCP, Vercel, Docker, Kubernetes, Railway Let’s Elevate Your Journey! Let’s discuss how I can create, and scale your product with the correct business-first approach! “Drop me a message” or hit the “Hire” button for in-depth discussion about your project. Let’s discuss your project in detail feel free to drop a message!

I build production-grade web applications end-to-end: scalable Python backends with Django and FastAPI, modern React and Next.js frontends, AWS cloud infrastructure, and AI-powered features that work in real production environments - not just demos. 100% Job Success Score. Top Rated Plus. $50K+ earned. 1,994 hours logged. 34 completed jobs. 6+ years building web applications. My longest Upwork client relationship runs 19+ months and counting on a Django ecommerce platform - that is what happens when code is built to last, not just to ship. WHAT CLIENTS HIRE ME FOR : - A SaaS product that needs to scale past MVP into something stable - A backend that needs Django or FastAPI expertise, not a generalist guess - AI features that need to actually work - OpenAI integration, automation, intelligent recommendations - A React or Next.js frontend that connects cleanly to a real backend - Data pipelines, web scraping, or automation that needs to run reliably - AWS deployment done properly - EC2, S3, Lambda, RDS, CI/CD WHAT I HAVE BUILT - REAL PROJECTS : Multi-Tenant SaaS Platform: Built with Python, Django, FastAPI, and React. Multi-tenant architecture supporting multiple client organizations on shared infrastructure. AI Coaching Platform: Python, Django, OpenAI integration, and Celery for background task processing. AI-powered coaching logic running on production infrastructure, not a prototype. Location-Based Food Platform: GeoDjango and PostGIS for geospatial data, deployed on AWS. Real-time location-based matching and routing. Django Ecommerce Backend: Ongoing client relationship since September 2024 (19+ months), 279+ hours logged. Continuous feature development and platform maintenance. Call Tracking and Analytics System: Webhook-based backend for call tracking, analytics, and agent callback routing in real time. TECH STACK : Backend: Python, Django, FastAPI, Flask, Celery, Django REST Framework Frontend: React, Next.js, TypeScript, TailwindCSS Databases: PostgreSQL, MongoDB, Redis, GeoDjango/PostGIS Cloud and DevOps: AWS (EC2, S3, Lambda, RDS), Docker, GitHub Actions, CI/CD AI and Automation: OpenAI API, LangChain, AI Agents, Web Scraping (Selenium, Playwright) Integrations: Stripe, PayPal, Twilio, SendGrid, OAuth, JWT Authentication, Webhooks HOW I WORK : I write clean, well-documented code that the next developer can actually understand. I communicate progress clearly instead of disappearing until delivery. I test before I ship. Fluent in English, available across time zones, and I respond within a few hours. Building a SaaS product, need a Python backend that scales, or want AI features that actually work - send me your project details. Keywords: Full Stack Python Developer, Python Developer, Backend Developer, Django Developer, FastAPI Developer, Flask Developer, React Developer, Next.js Developer, TypeScript Developer, AWS Developer, AWS Lambda, Amazon API Gateway, REST API Development, GraphQL Developer, Django REST Framework, API Integration, Third Party API Integration, JWT Authentication, OAuth Integration, Stripe Integration, PayPal Integration, Webhook Integration, AI Integration, OpenAI API Integration, AI SaaS Development, LangChain Developer, AI Agent Development, RAG Development, LLM Integration, SaaS Development, SaaS Platform, Multi-tenant SaaS, B2B SaaS, MVP Development, Custom Web App, Web Application Development, PostgreSQL Developer, PostgreSQL Optimization, MongoDB Developer, Redis Caching, Database Design, Database Optimization, Docker Deployment, Docker Containerization, CI/CD Pipeline, GitHub Actions, Celery Task Queue, Background Job Processing, Async Python, Web Scraping, Data Scraping, Selenium Automation, Playwright Scraping, Data Automation, Data Pipeline, Microservices, Microservices Architecture, Scalable Backend, Payment Integration, GeoDjango, PostGIS, AWS Solutions Architect, Database Migration

Senior engineer with 15+ years building scalable platforms and, recently, production-grade LLM and Retrieval-Augmented Generation (RAG) systems. I architect data ingestion pipelines, embedding and retrieval layers, and structured inference workflows on top of reliable backend infrastructure. Strong focus on efficient retrieval design, secure multi-tenant data access, prompt engineering for structured outputs, and cloud-native deployment of AI services. Core Skills - LLM/RAG: LangChain, LlamaIndex, custom orchestration flows Vector Databases: Pinecone, pgvector, Weaviate - Backend: Python (FastAPI, Django), Node.js - Cloud: AWS, GCP, Docker, Kubernetes Strengths: scalable architecture, clean documentation, production reliability GitHub: github.com/brnikita