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✅ Hardware Designer | ✅ Embedded & Firmware Developer | ✅ Software Engineer I'm an experienced electronic engineer with over 14 years of expertise in hardware and software design. My key strengths include: - PCB Design - Circuit Design - Firmware Development for STM8 & STM32 Whether you need a custom PCB layout, a sophisticated circuit, or reliable firmware, I’m here to deliver innovative solutions that meet your needs. Core Skills: - Programming: C, C++, Python, PyQt, Bash - Tools: KiCAD, Altium Designer, LtSpice, IAR, STVD + COSMIC, Keil, Postman, Wireshark, PyCharm, MySQL Workbench, Visual Studio, Eclipse, Git Extended Experience In my most recent project, I utilized: - Project Management Tools: Jira, Confluence, Bitbucket - Embedded Software: C, C++, Python, Embedded Linux, MariaDB, Qt - PC Software: Python, PyQt - Cloud Technology: AWS, Python, MariaDB, Docker, JavaScript - PCB Design Tools: Altium Designer, KiCAD, LtSpice - Testing & Debugging: UL2524, Wireshark, Postman, MySQL Workbench, Oscilloscope, Digital Analyzer, Soldering Equipment Let's Work Together: With my broad skill set and attention to detail, I can turn complex engineering challenges into seamless, practical solutions. I’m excited to collaborate and bring your projects to life!

I’m a developer experienced in building desktop and mobile applications. Whether you need a reliable tool, a custom solution, or a system for automation, I can help. In addition, I provide manual QA and game testing services: checking core flows, finding edge-case issues, documenting bugs with steps and screenshots, and re-testing after fixes. 💻 Developer specializing in desktop and mobile applications. ⚡ Skilled in Python (PyQt), Java (Android Studio), CI/CD, Docker, GitLab, Jenkins, MySQL, Google Cloud. 🔧 Experienced in manual QA and game testing: functional and exploratory testing, writing clear bug reports, and verifying fixes on real projects. 🚀 Let’s turn your project into reality!

I’m a Python developer specializing in web scraping, automation, and data extraction. Over the past few years, I’ve worked on real-world projects involving high-performance scraping, API integrations, and custom automation tools. I focus on building reliable, efficient solutions that can handle large datasets and run without constant supervision. 🔹 What I do best: Web Scraping & Automation: - Scraping structured and dynamic websites (requests, BeautifulSoup, Playwright) - Async scraping using asyncio / aiohttp for high performance - Handling pagination, rate limits, and large-scale data extraction - Extracting clean, structured data (CSV, JSON, databases) Data Processing & Integration: - Working with APIs (Twitch, Telegram, Instagram) - Data parsing, transformation, and validation - Experience with SQLite and basic knowledge of PostgreSQL Desktop & UI Applications: - Desktop apps using PySide6 (Qt) - Lightweight UI solutions with Flet and CustomTkinter - Building user-friendly interfaces for automation tools Bots & Automation Tools: - Telegram bots (aiogram, telethon) - Workflow automation and notification systems 🔹 Relevant experience: - Built high-performance scrapers handling large datasets (thousands of items per run) - Developed a complex real estate scraper with regional data aggregation and filtering - Created automation tools for Twitch chat processing, scoring systems, and giveaways - Worked on a startup project involving scraping, PostgreSQL, Docker, and server-side workflows - Experience deploying and testing scripts in Linux environments 🔹 Additional Projects: - Built a cross-platform habit tracking app (HTML/CSS/JS + Tauri) with calendar tracking and progress visualization 🔹 My approach: - Prefer fast and lightweight solutions (async requests) whenever possible - Use browser automation (Playwright) only when necessary - Focus on stability, data accuracy, and maintainable code Let’s build something efficient and reliable.

Hi, my name is Arsen. I’m a Senior C++ and Python developer with 5+ years of experience building software for Linux, Windows, and embedded systems. I focus on clean, efficient, and reliable solutions for low level, backend, and performance critical tasks. What I bring to projects: • C/C++ development: STL, Boost, Boost ASIO, Qt, WinAPI, OCCI, V8, POSIX, multithreading • Python development: automation tools, data pipelines, backend logic, Django • Database engineering: Oracle, SQLite, MongoDB, data export tools, batch processing, custom type conversion • Linux systems programming: networking utilities, driver level interaction, Linux kernel headers, OpenWRT, desktop and CLI tools • Wireless and low level networking: Generic Netlink, nl80211, libnl/libmnl, Wi Fi scanning tools, protocol and frame parsing • Reliability and performance: profiling, transactional workflows, data integrity focused design, Dockerized builds, CI/CD with TeamCity • Cross platform delivery: Linux and Windows applications, Make, CMake, Conan, Git/SVN, GDB, Valgrind, Doxygen, Bash I have built tools ranging from high performance Wi Fi scanners in C that interact directly with the Linux wireless stack, to cross platform C++ command line utilities that export Oracle data into SQLite with transactional safety and performance profiling. I am comfortable working close to the system, optimizing throughput, handling large datasets, and designing software that is maintainable and stable in production. Clients usually trust me with complex backend, systems, and infrastructure related tasks where performance, correctness, and long term reliability matter. If you are looking for a developer who can work on C++, Python, Linux internals, networking, or data heavy applications, let’s talk. 🙂

🎓 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!

🌐 Web Development | 🔄 Automations | 🧩 API Integrations | 🛡️ Clean, Reliable & Maintainable Code | 📊 Data Processing | 🕸️ Web Scraping & Data Mining | Hi! I'm a Python Developer with 9+ years of experience and a PhD in Telecommunications Engineering, specializing in Python backend development, automation, and data pipelines. 👋 Whether you need a Python Full Stack Developer to ship a production-grade web app, a Python Developer AWS to deploy scalable microservices, a Python Full Stack Developer Flask expert to build modern backend-driven applications, or a Python AI Developer to wire up intelligent automations — I deliver clean, reliable, maintainable solutions that solve real problems. If you're also searching for a solid web developer, full-stack developer — I bring the same professional rigour to every project. 🌐 Web Development & Backend Engineering
Building modern, robust applications using Python (FastAPI, Sanic, BlackSheep, Flask, Django), with clean architecture and best practices. As a Python Full Stack Developer I also connect backends to React frontends, delivering full end-to-end products. • REST APIs, GraphQL, microservices architecture, and event-driven systems • Python Full Stack Developer Flask & Django apps — from MVPs to enterprise-scale • Clean architecture, SOLID principles, OOP, and maintainable codebases 🔄 Automating complex business processes using N8N, Make, and Python to eliminate manual work, reduce errors, and boost operational speed. • Clients routinely save 100+ hours/month after automation delivery • Broker commission calculation pipelines — 70% reduction in processing time • Python AI Developer integrations with OpenAI and LLM-powered workflow tools 🧩 API Integrations
Seamlessly connecting services and platforms through REST APIs, OAuth2, JWT, and custom integration solutions. Integrated 35+ third-party APIs into live production systems. • Stripe, PayPal, SendGrid, Twilio, Google Maps, Salesforce, and more • Keycloak, Kong Gateway, Google Apigee, Apache Mesos/Aurora • Healthcare, Fintech, Telecom, and SaaS platform integrations 🕸️ Extracting valuable data from any website using HTTP, Scrapy, BeautifulSoup, Selenium WebDriver, and custom crawlers — delivered clean and ready for analysis. • High-volume scraping pipelines with anti-detection and proxy rotation • Grain price dashboards with real-time market data feeds • Sentiment analysis of articles and reports for retail manufacturers 📊 Data Processing & ETL
Transforming, cleaning, and analyzing large datasets using Pandas, SQL, and NoSQL databases — with full pipeline automation from source to insight. • PostgreSQL, MySQL, MongoDB, Redis, SQLite, Amazon Aurora • 50–70% faster query response times on high-load production databases • 100% data integrity preserved on legacy system migrations 🛡️ Clean, Reliable & Maintainable Code
Following best coding practices, with deep knowledge of OOP, SOLID, unit testing, and CI/CD — code that teams can own long after delivery. • 83%+ unit test coverage on complex integrations • Docker, GitHub Actions, GitLab CI, Nginx — full DevOps lifecycle as Python Developer AWS • Passed all security audits with 100% compliance 🐍 Python Developer — Core Expertise As a Python Developer I build backend systems, automation pipelines, and data-driven applications that are engineered to last. My work as a Python Developer covers the full spectrum — from designing reliable REST APIs and microservices to building complex ETL workflows and integrating third-party platforms. Clients come to me as their Python Developer when they need more than working code: they need systems that are observable, maintainable, and ready to scale. Whether the project calls for a Python Full Stack Developer delivering end-to-end web applications, or a focused Python Developer AWS deploying cloud-native services, I bring the same production-grade mindset to every engagement. 🤖 Python AI Developer & Intelligent Automation A growing part of my work as a Python Developer involves building intelligent, automated systems that go beyond traditional scripting. As a Python AI Developer, I integrate LLMs, AI agents, and MCP (Model Context Protocol) into real backend workflows — not as experiments, but as production features with proper error handling, observability, and cost control. I work with tools like N8N, Make, and custom Python orchestration to automate high-volume business processes that previously required significant manual effort. This combination of deep Python Developer expertise and hands-on AI integration experience means I can design automation that is both technically sound and genuinely useful to the business. 🤝 𝙍𝙚𝙖𝙙𝙮 𝙩𝙤 𝙂𝙚𝙩 𝙎𝙩𝙖𝙧𝙩𝙚𝙙? Let's collaborate to bring your project to life. Whether you need a Python Developer, a Python Full Stack Developer, a web developer, a web scraping expert, or a Python Developer AWS — contact me today to discuss your project.