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Need data others can’t access? I build scraping systems that bypass blocks and deliver clean, structured data at scale. Most developers try - I build working, stable pipelines for complex, protected targets. 🚨𝐈 𝐨𝐟𝐟𝐞𝐫 𝐚 𝐟𝐫𝐞𝐞 𝐬𝐜𝐫𝐚𝐩𝐢𝐧𝐠 𝐯𝐢𝐚𝐛𝐢𝐥𝐢𝐭𝐲 𝐜𝐡𝐞𝐜𝐤 𝐨𝐫 𝐩𝐫𝐨𝐯𝐢𝐝𝐞 𝐚 𝟑𝟎-𝐦𝐢𝐧𝐮𝐭𝐞 𝐜𝐚𝐥𝐥 𝐰𝐢𝐭𝐡 𝐚 𝐝𝐚𝐭𝐚 𝐫𝐞𝐯𝐢𝐞𝐰. If something can’t be done - I’ll tell you upfront. No wasted time. I’m a Full-Stack Developer with 5+ years of experience, specializing in web scraping, backend systems, and modern frontend development. I focus on building reliable solutions: scrapers that handle Cloudflare, captchas, and rate limits; backends that process and serve data efficiently; and frontends that are fast, clean, and user-friendly. Projects & Results: 📌 Sparetech - Semiconductor Data Platform Result: Built a large-scale database across ~100 sources My impact: Designed multi-source scraping architecture Normalized complex, inconsistent datasets Bypassed blocking systems & custom site structures Delivered a centralized, production-ready database 📌 Rightmove - Real Estate Scraping Ecosystem Result: Daily-updated large-scale property database + analytics tool My impact: Scraped one of the largest UK real estate platforms Bypassed anti-bot & rate-limiting systems Built data pipelines with daily updates Developed Chrome extension for ROI & rental yield analytics 📌 Nancy Packes Inc. - Data & Automation Systems Result: Contributed to projects generating $200K+ value My impact: Built data extraction & automation workflows Integrated APIs and structured datasets for business use Optimized performance and reliability Core Skills That Drive Results: 🔹 Frontend (Modern UI that converts) React, Next.js, Vue - fast, scalable SPAs & SSR apps State management (Redux, React Query, Context) - predictable, maintainable UI Tailwind, SCSS, Styled Components - clean, responsive design Form systems (Formik, React Hook Form, Yup) - robust validation UX 🔹 Backend (Scalable & secure systems) Python (FastAPI, Flask, Django) - high-performance APIs PostgreSQL, MongoDB - solid data architecture Auth (JWT), WebSockets - real-time & secure systems Docker - clean deployment pipelines 🔹 Web Scraping (My unfair advantage) Scrapy, Playwright, Selenium - dynamic & protected sites Anti-bot bypass (Cloudflare, rate limits, captchas) Proxy rotation, session handling ETL pipelines, data normalization High-volume scraping with retries & monitoring 🔹 Telegram Automation Aiogram, Telethon - high-load bots Payments, notifications, admin panels CRM/API integrations Focus Niches: eCommerce Real Estate Telegram Automation Crypto / Web3 Data-driven platforms SEO Keywords: Web Scraping, Data Extraction, Scrapy, Playwright, Selenium, Python Backend, FastAPI, API Development, React, Next.js, Full Stack Developer, Data Pipelines, ETL, Automation, Telegram Bots, WebSocket, Anti-bot Bypass, Proxy Rotation, Real Estate Data, eCommerce Scraping, Chrome Extension

🟢 100+ successful projects | Top Rated Plus | 10+ years of experience 🟢 I help businesses collect reliable data, automate workflows, integrate APIs, and build AI-powered systems that reduce manual work and turn messy processes into clean, scalable, production-ready solutions. I’m Sergii, Senior Automation & AI Engineer at DataOx. For 10+ years, we’ve helped startups, small businesses, and growing teams build custom data extraction systems, workflow automation tools, API integrations, backend platforms, data pipelines, and practical AI automation solutions. What I can help you with: • Web scraping & data extraction Custom scraping systems for websites, marketplaces, directories, eCommerce platforms, real estate platforms, job boards, online portals, social networks, and other public or structured data sources. • Data processing & data pipelines Cleaning, structuring, normalizing, transforming, and preparing data for reporting, analytics, dashboards, CRMs, databases, Google Sheets, Airtable, internal tools, or AI systems. • Workflow automation & browser automation Automation systems that replace repetitive manual work, connect tools, handle business logic, run scheduled processes, and reduce operational workload over time. • API integration & backend systems REST API integrations, third-party API connections, custom API development, backend logic, database workflows, admin panels, internal platforms, and scalable business systems. • AI automation & AI-powered tools AI agents, ChatGPT / OpenAI API integration, Claude, Gemini, AI-driven workflows, document processing, natural language interfaces, AI-generated reports, classification, extraction, and decision-making support systems. • Existing system improvement Bug fixing, refactoring, stabilization, performance improvements, error handling, documentation, feature enhancements, and long-term support for existing automation, scraping, backend, or AI systems. Typical projects we build: • Web scraping and data extraction platforms • Price monitoring and competitor monitoring tools • Lead generation and contact data collection systems • Workflow automation and process automation tools • API integrations between CRMs, databases, SaaS tools, and internal systems • AI-powered assistants, AI agents, and business automation tools • Document parsing, classification, and reporting systems • Data pipelines, ETL processes, and structured datasets • Dashboards, admin panels, and backend web applications • Google Sheets, Airtable, Telegram bot, and email automation workflows Why clients work with us: • Strong experience with similar projects • Clear understanding of technical requirements and business goals • Reliable communication and structured project delivery • Clean, maintainable, and scalable architecture • Strong problem-solving approach • Ability to handle changing requirements and real-world edge cases • Production-ready solutions with error handling and clear documentation • Long-term support after the first version is delivered Tech stack and tools: Python, Java, FastAPI, Django, Spring Boot, PostgreSQL, MySQL, MongoDB, REST APIs, Selenium, Playwright, Scrapy, BeautifulSoup, Pandas, ETL pipelines, cloud services, OpenAI API, ChatGPT, Claude, Gemini, Google Sheets API, Airtable API, CRM APIs, payment APIs, and custom backend systems. I work best with clients who need more than just a quick script. If you need an experienced developer or technical partner who can understand the goal, clarify the scope, build a reliable solution, and support it over time, I can help. Send me a message with your project details, data sources, tools, API requirements, or current workflow, and I’ll help you define the best technical approach.

🚀 **Back End Developer and Integrations Specialist** I am a highly skilled Senior Back End Developer and DevOps professional. My expertise spans cloud deployments, web development, and data analytics, bringing innovative and scalable solutions to every project. 🌐 **Web Development and AI Integration Expertise:** With over 6 years in IT system analysis and 2 years focusing on web development, my skillset includes: - **Backend Development**: Crafting efficient, scalable backend systems using Python, Django, Fast and RESTful APIs. - **AI and Automation**: Building advanced AI-powered solutions, and integrating AI API to enhance decision-making processes. - **Web Scraping & Data Collection**: Extracting valuable insights with tools like Selenium, BeautifulSoup, and Requests for accurate, real-time data gathering. 🌟 Key Strengths: *Kubernetes and Docker: Expertise in containerization and orchestration, ensuring seamless deployment and management of applications. *Terraform: Skilled in infrastructure as code, automating and optimizing cloud infrastructure with best practices. Cloud Platforms: Extensive experience across AWS, delivering scalable and secure cloud solutions. CI/CD Tools: Proficient in CI/CD pipelines using YAML, GitHub Actions, and GitLab CI for continuous integration and deployment. Monitoring Tools: Familiar with Grafana, and AWS Cloud Watch, ensuring effective monitoring and performance optimization. 🔧 **Tech Stack:** ✔Programming languages: Python, CSS, HTML ✔UI UX Tools: Figma, Framer, WixStudio ✔Blockchain: KYC, Payment Gateway integration ✔Front-end Technologies: HTML5, CSS3, Bootstrap, jQuery ✔Development Frameworks: Django, Flask, FastAPI, RestFull ✔Databases: MSSQL, MySql, RDS, DynamoDB ✔Database Development: DjangoORM, AWS DynamoDB SDK ✔APIs: Facebook API, E-Commerce API, Twilio API, PostMan, PubMed, ClinicalTrials ✔Servers: Windows Azure, AWS, SQL Server ✨ **Why Choose Me:** With a blend of Backend development, Cloud and DevOps expertise, I deliver high-impact solutions that align with business goals. My problem-solving skills, combined with a collaborative mindset and a passion for innovation, set me apart in every project. ✨ Proven Track Record: Successfully delivered numerous projects, meeting and exceeding client expectations. 🎯 Client-Centric Approach: I prioritize understanding your business goals to deliver solutions that align perfectly with your objectives. 💼 Project Management: Proficient in the double triangle methodologies, ensuring projects are delivered on time and within budget, while keeping client satisfaction. 🌐Practical experience in analytics and support give me an advantage over other developers because I troubleshoot issues while keeping deadlines and productivity, putting together data that is relevant for business impact. 🚀 Let’s collaborate and drive your business forward with cutting-edge Cloud, AI, and Web development solutions!

Web, mobile and API automation expert. Fully integrated CD and CI pipeline using Jenkins, Gitlab, Codeship and other tools. I have strong experience in creating automation tests using cucumber, jbehave, serenity BDD automation framework and using all its features, like integration with Jira, running tests in parallel on Jenkins and excellent HTML reports after finishing the tests. Expert in CD and CI setup using open source application and tools help your team to achieve high quality product with in timeline. Experience using Jenkins Codeship, aws EC2, Heroku and firebase to providing the cutting edge automation testing solution. As a load test engineer, I create the custom scripts in Jmeter and then we can run those scripts on the required infrastructure. I will help you benchmarking your application. I have working experience in creating web scrapper using phantomjs/selenium and casperjs as framework. I can save the results of web crawler in txt, xls or in DB also the out put can be in JSON format so that you have integrate it with your backend code. Following are the tools and languages I am comfortable working with: 1. Java, selenium webdriver, selenium page object model 2. Javascript, phantomjs, casperjs 3. Nodejs, ES6 4. Cucumber, Serenity BDD, Jbehave 5. Jenkins, Codeship, Cloudbees 6. Firebase, Heroku, AWS EC2, S3, codedeploy 7. Jmeter, Blazemeter. We have leading protractor testing framework ready to use. It has following features. 1. Customised gulp commands to run all tests, run single scenario, run tests based on tags, provide the application url from command line. 2. Configurable with CD/CI, Browser stack, Sauce lab, Bitbar 3. Single test result page for run on different browser and devices. 4. Notification for failed step and number of test failed

📈 Transforming Data into Insights with AI and Machine Learning Expertise I am an AI and Web Scraping Developer with over 8 years of professional experience and a Top Rated status on Upwork. Holding a Master of Computer Applications (M.C.A.) in Hardware Design from Poltava V.G. Korolenko National Pedagogical University, I bring a strong technical foundation and a passion for cutting-edge technology to your projects. 🧠 Expertise in AI, Machine Learning, and Web Scraping Programming Languages: - Python (NumPy, Pandas, Scikit-learn, TensorFlow, PyTorch, Flask, Django, BS4, Playwright) - PHP (Laravel, Livewire) Web Scraping and Automation: - Selenium WebDriver - BeautifulSoup - Scrapy Machine Learning and AI: - OpenAI Technologies - Natural Language Processing (NLP) - ChatGPT Data Handling and Databases: - MySQL - PostgreSQL - MongoDB APIs and Integrations: - RESTful APIs - JSON - XML Deployment and DevOps: - Docker - AWS - Azure 🚀 Delivering Solutions Across Diverse Business Domains I have successfully completed real-time projects across various industries, delivering solutions that include: - Developing and implementing machine learning models for predictive analytics. - Creating sophisticated web scraping tools for data collection and analysis. - Integrating OpenAI and ChatGPT technologies into applications for enhanced user experiences. - Building NLP applications for text analysis and processing. 🤝 Collaborative and Adaptive Approach I thrive in dynamic environments, quickly adapting to project demands and shifting priorities. I embrace unfamiliar situations as opportunities to learn and explore new ideas. My commitment to continuous learning ensures that I stay at the forefront of technological advancements, ready to meet and exceed your project goals. 🌟 Client Success Stories Clients consistently praise my: - Technical expertise - Professionalism - Ability to deliver high-quality solutions tailored to their needs They value my collaborative approach, clear communication, and dedication to solving complex challenges. 💡 Let's Work Together I am dedicated to achieving your objectives and look forward to the opportunity to collaborate with you. Whether you are looking to harness the power of AI and machine learning, automate data collection, or integrate advanced technologies into your operations, I am here to support you every step of the way. Let's transform your ideas into reality and drive innovation together!

Senior full stack engineer for FinTech Products · Real-Time Dashboards · Legacy Migrations SENIOR FULL STACK ENGINEER When your trading dashboard lags, your legacy codebase blocks every sprint, or your team ships Excel instead of a real product — that's exactly the problem I've been solving for 12 years. My expertise knowledge domains are Fintech, Energy & Retailing. Transforming complex ideas into seamless, scalable web solutions - powered by React, Next.js, Node.js I've built and shipped production React/Next.js applications for HSBC, UBS, McKinsey, Sainsbury's, and Equinor — environments where slow code costs money and architecture decisions stick for years. ✅ 14+ SPAs and PWA built from scratch in regulated FinTech environments ✅ 5+ legacy migrations delivered (Backbone → React) without stopping product delivery ✅ Excel → Web App: replaced spreadsheet workflows for biggest UK retail company (30-person team, 1 year) ✅ Introduced TDD/BDD culture — from 0% to production-grade test coverage ✅ Real-time trading dashboards for Fixed Income & FX platforms WHO I WORK WITH → FinTech scaleups building trading tools, risk dashboards, or payment platforms who need a senior engineer — not a ticket executor → Enterprise teams with a React codebase that's become painful to ship → Companies replacing a critical Excel workflow with a real web product → Outsourcing vendors (Softserve, GlobalLogic, Luxoft-type) who need a battle-tested senior contractor for FinTech client accounts WHAT I BRING → React architecture that's designed to last, not just to demo → Full-stack ownership: React + Node.js + GraphQL + PostgreSQL + AWS/Azure → CI/CD, Docker, Kubernetes — I don't just hand off code, I ship it → Code reviews, mentoring, and engineering standards that stick → Small agency squad available: FE + Backend + DevOps for full-product builds DOMAINS FinTech · Oil & Energy · Retail · SaaS · Internal Tooling STACK React · TypeScript · Next.js · Node.js · GraphQL/Apollo · Redux PostgreSQL · MongoDB · AWS · Azure · Docker · Jest · Cypress · CI/CD If your biggest challenge right now is speed, architecture, or a migration — send a message. I'll tell you in 20 minutes if I can help. Transforming complex ideas into seamless, scalable web solutions - powered by React, Next.js, Node.js, and a decade of real-world results. Ready to elevate your project to the next level? No fluff, just smooth project delivery🏆 TECHNICAL SKILLS ✅ Frontend: React, Next.js, GraphQL, Redux, TypeScript, HTML5, CSS3, JSS, LESS/SASS , Wordpress Backend: Node.js, Python, Express, REST APIs Databases: PostgreSQL, MongoDB, Redis, SQL Cloud & DevOps: AWS (Lambda, DynamoDB, S3, API Gateway), Azure, Docker, Kubernetes, Jenkins, GitHub Actions Testing: Jest, Cypress, Selenium, react-testing-library, TDD, E2E Tools: Storybook, Lerna, BrowserStack, Vite, Webpack, CI/CD pipelines Full stack developer, JavaScript expert, Web Developer. (React, TypeScript, Node.js, Next.js) React, React Native, React.js, Mobile App Development, Crossplatform apps React Node.js Web Development Software Development GraphQL Web Application API Integration CSS Progressive Web App HTML Cloud Application API API Development MySQL PostgreSQL WordPress Artificial Intelligence Mobile App Development HTML5 Bootstrap Node.js, Full Stack Development, SaaS Development, API Development, FinTech, Retail-Tech, MVP, Payment Integration, CRM Integration, Software Architecture Web App Site SaaS Figma Re-Design Mobile Needed Application Expert Product projects Need Wireframe B2B Mockup Prototype Platform Existing Portal Talented Create Dashboard Required Looking New Develop Modern Conversion Build Finance Content Software Screens Graphic Brand interactive Android Help Homepage Marketplace High-Fidelity Frontend Fashion Medical MVP short longer term Work Research Information Architecture U/X Revamp Supplement Start-Up entertainment Custom Web Platform SaaS Ul Graphics Product Ul Animation Web Application Audit Dashboard Concept Mobile Angular iPad Ul Minimum Viable Product Concept UI/UX UI UX design User Interface Promo Adaptive User Interface platform design Landing Page Responsive Graphics & Ul Website User Experience InVision Axure, REST, REST API, Full-cycle Web, Full stack engineer, REST-API Integration, FinTech, Oil&Energy, Retail, SaaS Responsive Infographics design UX/UI Desktop Sketch Adobe WordPress Technology & IT Entertainment Business & Sales Marketing Advertising B2B B2C Consultancy Science Sport & Wellness Fashion & Beauty Apparel Nonprofit Startup Transport & Logistic Education Arts & Culture Design & Architecture Hospitality & Leisure Manufacturing Food & Drinks Travel Law SaaS DaaS Home Services Banking & Finance Real Estate Luxury Retail Healthcare & Medicine Professional Services Startup Start-up Small & Midsize SAP CRM ERP, API Integration, React Web App, React SPA, React PWA, Next.JS App, Node.js App, TypeScript Web Development, JavaScript Expert