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I am a Top-Rated Data Scientist and Researcher with a PhD in Remote Sensing and over 15 years of experience delivering high-performance R&D solutions for industrial, academic, and enterprise sectors. I specialize in bridging the gap between raw, noisy data and actionable business objectives, transforming complex signals into deployable machine learning pipelines. Whether it's developing novel diagnostic algorithms, predicting physical parameters from multi-channel data, or building advanced event-detection models, I design end-to-end architectures that solve complex, non-standard problems. My Recent R&D Successes Include: - Time-Series & High-Frequency Data: Engineered robust detection models for electric and water appliances using high-frequency data, providing highly accurate recognition pipelines. - Computer Vision & Remote Sensing: Developed predictive models for physical and nutritional parameters using hyperspectral imaging. - SOTA AI Implementation: Investigated and deployed ready-to-production State-of-the-Art (SOTA) AI/ML solutions based on advanced Kaggle competition methodologies. - Biomedical Data: Deep sleep data visualization and advanced processing for physiological monitoring. How I Help Businesses: - End-to-End Problem Solving: I handle the entire pipeline—from raw data evaluation, advanced feature engineering (using communication theory), to hyperparameter optimization and rigorous out-of-fold validation. - Advanced Digital Signal Processing (DSP): Extracting critical insights from 1D/2D signals, including noise assessment, filtering, and compression. - Deployable ML Architectures: Building predictive models with PyTorch, XGBoost, and OpenCV, optimized for real-world integration. Recognized Expertise: - Upwork Skill Certified in Data Science & Data Analytics - AWS Certified Machine Learning & Cloud Foundations - Author of 100+ Scopus-indexed publications (h-index: 14) - Tech Stack: Python (PyTorch, SciPy, Scikit-Learn, OpenCV), MATLAB, Signal Filtering, Multivariate Statistics, SQL, Cloud Computing (AWS).

Full-stack by foundation, AI by conviction. I was building machine learning systems back when it required more math than marketing - 17+ years in software development, 5+ years as a hands-on AI engineer and AI developer.🇺🇦 I'm a CTO-level AI engineer, machine learning architect, and software architect with a perfectionist's attention to detail. My team of AI engineer, AI developer, data scientist, and web developer delivers full-cycle AI App Development and Web Development - from early MVPs to enterprise platforms. Need an AI chatbot developer, an AI integration specialist, a software engineer, a Python developer for ML pipelines, or a data scientist with real machine learning depth? We've done it - properly. 𝗪𝗵𝗮𝘁 𝘄𝗲 𝗯𝘂𝗶𝗹𝗱 𝗮𝘀 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀: ✅ AI App Development - LLM-powered apps, RAG pipelines, AI bot and AI chatbot solutions ✅ AI Agent Automation, autonomous ai agent builder, ai agent creator and agentic workflows (LangChain, CrewAI) ✅ AI Integration - AI model integration and API integration into your existing systems ✅ AI Chatbot Developer services - intelligent bots, NLP systems, multilingual AI chatbot products ✅ AI Automation n8n - ai agent n8n workflow orchestration, data scraping, pipeline automation with n8n ✅ Computer Vision - OpenCV, CNN architectures, image recognition and processing systems ✅ Machine Learning & Data Science - model design, training, optimization, production deployment ✅ Web & Back-End Development - React, Node.js, Python, PHP, Java; RESTful & GraphQL API integration ✅ MVP / PoC - custom, low-code, no-code; discovery, UI/UX, QA, project management 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗰𝗵𝗼𝗼𝘀𝗲 𝘂𝘀: As AI developer and AI engineer, we don't just integrate tools - we architect solutions. Whether it's a custom AI chatbot developer engagement, a complex AI integration project, or a full AI App Development cycle, our AI engineering team brings senior-level ownership to every project. Every AI app developer on our team treats your product like their own. From AI integration strategy to deployment - we own it end to end. 🧬 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: - Machine learning, deep learning (PyTorch, TensorFlow), Python machine learning systems - Natural Language Processing, computer vision (OpenCV, CNN), RAG pipelines - AI Agent Development, AI App Development, and AI chatbot development for production - Data scientist and data analyst workflows; quant machine learning for FinTech - AI Integration and API integration - robust RESTful / GraphQL API development - n8n automation, cloud infrastructure (AWS, Docker, Kubernetes) Our team includes senior AI engineer and specialists with machine learning PhD backgrounds. 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸: Python · PyTorch · TensorFlow · Scikit-Learn · LangChain · open ai developer · React · Vue · Angular · Node.js · Java · PHP (Laravel) · ASP.NET · PostgreSQL · MongoDB · ElasticSearch · AWS · Docker · Kubernetes · n8n 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀: FinTech & quant ML · e-Learning · Fantasy sports & gaming · e-Commerce · Media & Entertainment · EcoTech · PropTech · Cybersecurity 𝗧𝗵𝗶𝘀 𝗽𝗿𝗼𝗳𝗶𝗹𝗲 𝗳𝗶𝘁𝘀 𝗶𝗳 𝘆𝗼𝘂'𝗿𝗲 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿: AI engineer · AI developer · AI chatbot developer · AI integration specialist · API integration specialist · machine learning engineer · data scientist · computer vision engineer · Python developer · web developer · AI agent developer · n8n automation expert · LangChain developer · AI bot developer · OpenAI developer · prompt engineer · agentic AI developer · AI Automation make · AI Prompt Engineer · AI Model · ML · LLM · ai machine learning trading · machine learning time series · airtable integration · ai api integration · software engineer · ai Lead Generation · social media marketing automation · etsy marketing · business development · pinterest marketing · sales agent · ai automationai developer · ai data engineer · ai engineer rag nlp · ai prompt engineering · ai saas developer · airtable automation · app developer with ai · bolt ai developer · computer vision machine learning · airtable integration 👉 Check the portfolio and selected projects below.

I build NLP systems that work in production - RAG pipelines, agentic workflows, custom entity extraction for complex documents. A Data Scientist with a rare combination of deep industry experience and academic teaching, I'm fluent in both modern LLM-based approaches and classical NLP techniques. Core expertise: - Traditional NLP approaches and modern LLM-based solutions - Designing and implementation of RAG & Agentic systems - Developing custom GenAI multistep processing flows/pipelines for non-trivial NLP tasks Tech skills: - Programming - Python, Dart (Flutter) - Frameworks and libs: LangChain, LlamaIndex, PydenticAI, HuggingFace, Keras & TensorFlow, scikit-learn, SciPy, etc. Teaching: - Machine Learning and Deep Learning courses lecturer at Lviv Polytechnic National University - Curriculum development with emphasis on practical, modern and industry-relevant applications Projects: - RAG-based information extraction from documents - developed map-reduce LLM chain for multiple information extraction from PDF files, scaled solution for a multi-document processing - Custom entities extraction - construction and implementation of classification and extraction pipelines for long financial documents - Code-generation assistant - developed RAG based code generation assistant for internal libraries support Work approach: I prioritize transparent communication and am flexible to work either from simple working solutions with iterative improvements or comprehensive approaches from the start.

🎓 With 100+ completed projects and over 3,000 hours of successful work delivered, I bring dedication, consistency, and proven results to every collaboration. I combine technical expertise with a results-driven mindset. As a seasoned Python Developer with a Master’s in Computer Science and 10+ years of experience, I also work as a Python developer to help businesses transform raw data into actionable insights that drive smarter decisions and measurable success. By specializing in data mining, web scraping, OCR, and machine learning solutions, I deliver tailored, efficient systems that streamline data processes and empower you to achieve your goals faster. 💼 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜 𝗢𝗳𝗳𝗲𝗿: • Data Mining & Web Scraping: Expertise in scraping data from dynamic websites, PDFs, images, and captcha solving, with delivery in formats like CSV, JSON, XML, or SQL DB. • Machine Learning | AI | Data Science: Proficient in building predictive models and data analysis using libraries like Pandas, Scikit-learn, TensorFlow, and PyTorch. • OCR & Image Processing: Skilled in extracting text from images and solving captchas using Tesseract OCR, EasyOCR, and Google Cloud Vision. Over the years, as a Python developer, I've developed many cross-platform scraping tools for popular websites like Amazon, Booking, eBay, Craigslist, and other social networks and e-commerce sites. I'm well-versed in handling complex and well-protected sites using techniques such as user-agent changing, IP-rotation, headless browsers, captcha solving engines, and custom captcha solving solutions. In addition to my data mining and extraction skills, as a Python developer, I'm also proficient in data analysis and machine learning. I can help you build predictive models that will enable you to make informed decisions based on your data. I have worked on various projects that required analyzing large datasets and presenting insights in a clear and concise manner. Furthermore, as a Python developer, I pride myself on being a problem solver and a team player. I enjoy collaborating with clients to understand their needs and providing tailored solutions that meet their requirements. As a Python developer, my algorithm for providing these services is as easy as ETL (Extract, Transform, Load), which makes it simple for you to get the data you need. I'm excited to collaborate with you and deliver high-quality results. Let's work together soon! 💻 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗼𝗼𝗹𝘀: ✓ Web Scraping, Data Mining, Web Crawling, Email Scraping (Python + Beautiful Soup, Scrapy, lxml / HTTPX, aiohttp / asyncio, Selenium Webdriver / Playwright , PhantomJS, and other Frameworks, Scraping Hub, Crawlera, Google Cloud/DigitalOcean/Azure or AWS deployment) ✓ Data Analysis and Visualisation (NumPy, SciPy, Pandas, scikit-learn, Matplotlib / Seaborn, Jupyter Notebook, Tensorflow) ✓ AI, Prompt Engineering & Model Optimization (ChatGPT, OpenAI API, LLama) ✓ Image Processing & OCR (OpenCV, Tesseract OCR, EasyOCR, TrOCR, PIL, Image Magick, Google Cloud Vision) ✓ Image/Text/CAPTCHA Recognition (Tesseract OCR, Antigate API, reCaptcha, DeathByCaptcha) ✓ PDF Mining (QPDF, XPDF, PyPDF, pdfminer, pdfplumber, PyMuPDF, Tabula) ✓ Desktop Applications Development (PyQT, wxPython) ✓ Database Systems (SQL, MS SQL Server (T-SQL), PostgreSQL, MongoDB, MySQL, MS Access, SQLite, Firebird) ✓ API Integration (Rest API, Twitter API, Facebook API, Instagram API, Google API, Youtube API, Bing API, eBay API) 📝 𝗥𝗲𝘃𝗶𝗲𝘄𝘀: ✓ "Top notch developer!" ✓ "Excellent work is done by Nataliia. She exceeded my expectations!" ✓ "Extremely thorough and quick!" ✓ "She does excellent work on long tasks, and is highly recommended." Does that suit you? 🕙 If you’re looking for a reliable Python developer, feel free to contact me anytime, and let's discuss the details of your task during the interview. I'll be glad to help you to reach your goals!

HI, I build AI systems with structured knowledge (graphs) for complex domains (OSInt, RealState, Legal, Finance) Experienced Data Scientist with a Master’s degree in Economic Cybernetics, specializing in cutting-edge machine learning, artificial intelligence, and graph-based technologies. My passion lies in creating innovative solutions that leverage data to drive actionable insights and improve business outcomes. What I Offer: Extracting and structuring values, insights from your data (documents, signals, networks). Advanced Algorithm Development: I feel strong in building algorithms that push the boundaries of traditional analytics. With a strong foundation in graph neural networks and machine learning, I can develop models that the world has never seen before. Data Structuring and Clarity: When you're ready to enhance the structure and clarity of your data, I can integrate GA4 and GTM to provide a comprehensive view of your client flow and improve data accuracy. Predictive Analytics and AI: My expertise in machine learning and AI enables me to provide forecasts and predictive models that can anticipate future trends and partner behaviors. I focus on understanding complex patterns and anomalies to offer valuable insights. Graph Database Solutions with Neo4j: As an active proponent of Neo4j, I can handle a wide range of tasks including: Installation and configuration on various platforms (Linux, Windows, Mac, AWS) Creating and managing knowledge graphs from diverse text documents Migrating data from CSV files using Cypher queries Performing complex queries and data analysis, including finding shortest and cheapest paths, and identifying popular nodes Developing applications such as social networks and fraud detection systems Statistical Analysis and Data Science Expertise: Proficient in multi-variable regression, Monte Carlo simulations, and statistical characterization of time series data. I can help you identify trends, predict future values, and prioritize work based on common property characteristics. Why Choose Me: Innovative Thinking: I am driven by the challenge of solving complex problems and providing innovative solutions that make a difference. Collaborative Approach: I love working with people and creating comfortable conditions that foster effective collaboration and communication. Proven Track Record: My background includes successful projects ranging from social networks for stock trading to cyber security fraud detection systems. If you are looking to bring more structure to your data, build advanced algorithms, or leverage Neo4j for your graph-based projects, I am here to help. Let’s discuss how my expertise can contribute to your project’s success! Looking forward to the opportunity to work with you. Best regards, Konstantin. Skills: Excel Graph Neural Networks Neo4j & APOC Functions Machine Learning (TensorFlow, PyTorch) Data Science Libraries (Pandas, NumPy, Scikit-learn) Creating Knowledge Graph (with RAG, GenAI) GA4 & GTM Integration Predictive Analytics Statistical Analysis Multi-variable Regression Monte Carlo Simulations Data Visualization (Matplotlib, Seaborn, Plotly)

I’m a Senior Python Engineer and Full Stack Developer with 8+ years of experience building web scraping infrastructure, automation platforms, backend systems, and scalable data engineering solutions for startups, SaaS products, trading companies, and data-driven businesses. Clients usually contact me for projects related to Python development, Full Stack development, backend development, backend APIs, web scraping, data extraction, browser automation, Playwright automation, Selenium automation, Scrapy development, ETL pipelines, workflow automation, automation systems, API integrations, real-time data processing, AI automation, OpenAI integrations, scalable backend systems, sportsbook software, betting systems, odds aggregation, analytics platforms, SaaS products, and high-load real-time data systems. Why clients work with me ✔ 8+ years of Python engineering experience ✔ 6+ years of Full-Stack engineering experience ✔ $400K+ earned on Upwork ✔ Top Rated Plus freelancer ✔ Production-grade scalable architectures ✔ Strong communication and reliable delivery ✔ Experience with high-load real-time systems ✔ Long-term technical partnership mindset My main stack includes: Python • FastAPI • Django • Flask • AsyncIO • REST APIs • GraphQL • Playwright • Selenium • Scrapy • WebSockets • Microservices • Celery • SQLAlchemy • Backend Architecture - Web Scraping & Data Engineering Playwright • Selenium • Scrapy • BeautifulSoup • Requests • Browser Automation • Data Extraction • Web Scraping • Data Mining • ETL Pipelines • Proxy Management • Pandas • NumPy • Dask • Scikit-learn • TensorFlow • PyTorch • XGBoost • OpenCV - Advanced Scraping Infrastructure Cloudflare • DataDome • Akamai Bot Manager • PerimeterX • reCAPTCHA • hCaptcha • Residential & Mobile Proxies • Session Management • Authentication Workflows • Browser Fingerprinting - Full Stack Development React • Next.js • TypeScript • JavaScript • HTML5 • CSS3 • Tailwind CSS • Admin Dashboards • SaaS Applications • Analytics Dashboards - Cloud, DevOps & Infrastructure Docker • Kubernetes • AWS • Google Cloud • Azure • GitHub Actions • GitLab CI/CD • Terraform • Ansible • Nginx • Linux AI & LLM Development OpenAI API • GPT-4 • Claude • Llama • AI Agents • RAG • Prompt Engineering • AI Automation • LLM Integrations • As a Full Stack Developer and backend developer, I build backend systems, APIs, automation platforms, web applications, analytics dashboards, browser automation workflows, admin panels, and scalable real-time data products designed for production environments. Web Scraping & Automation As a Python developer specializing in web scraping and automation systems, I build scalable scraping infrastructure for dynamic websites, protected platforms, APIs, marketplaces, SaaS products, and analytics systems. Scraping and automation projects include: • Large-scale web scraping systems • Data extraction pipelines • Browser automation with Playwright and Selenium • Scrapy-based scraping infrastructure • API reverse engineering and API integrations • Proxy management and anti-bot workflows • Marketplace and e-commerce data collection Backend Development & Automation Systems As a Full Stack Developer and backend developer, I also build scalable backend systems, backend APIs, automation infrastructure, workflow automation platforms, web applications, and real-time backend services. Typical backend and automation projects include: • Backend API development • Workflow automation systems • Real-time automation platforms • Monitoring and reporting systems • Data synchronization systems • Web applications and admin dashboards • Cloud-based backend infrastructure Clients hire me as a Python developer and Full Stack Developer when they need scalable backend systems, automation workflows, real-time data processing, or production-grade infrastructure that can support long-term product growth. Sportsbook & Betting Systems I have strong hands-on experience building sportsbook software, betting systems, odds aggregation platforms, sportsbook data systems, and real-time betting infrastructure running in production environments. • Real-time sportsbook odds aggregation systems • Arbitrage and positive EV analytics platforms • Betting automation and execution systems • Historical odds databases and backtesting engines • Sports analytics dashboards and reporting systems • Odds monitoring and alerting systems AI Automation & Data Infrastructure • AI data collection pipelines • OpenAI API integrations • AI automation workflows • RAG and knowledge base infrastructure • AI enrichment and structured data processing If you need a Python developer, Full Stack Developer, backend developer, or automation developer who can build scalable backend systems, automation infrastructure, web applications, sportsbook systems, or real-time data products, feel free to reach out.