Hire the Best PyQt Developers in Lviv, UA

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!

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. 🙂

Python Developer & Web Scraping Specialist 🐍 I am a Python Developer with freelance experience since 2022, focused on building automation tools, web scraping systems, and backend solutions. I specialize in extracting, processing, and structuring data from the web, as well as developing scalable scripts and services that help businesses automate workflows and collect valuable data efficiently. My work combines clean, maintainable Python code with reliable data pipelines and automation systems, allowing clients to gather structured information, monitor websites, and integrate external services through APIs. 🚀 Core Skills & Technologies • Python, HTML, CSS • FastAPI • Telethon, Aiogram • SQL, PostgreSQL, MongoDB • BeautifulSoup (BS4), Selenium 💻 My Expertise Includes 🏆 Web Scraping & Data Extraction: Selenium, Playwright, BeautifulSoup, Scrapy, Requests 🏆 API & Data Parsing: REST APIs, GraphQL, JSON, XML 🏆 Headless Browsers & Automation: Puppeteer, undetected-chromedriver, curl_cffi 🏆 Scalable Scraping Systems: Async scraping, distributed crawlers, Scrapy-Cluster 🏆 Proxy & Session Management: Residential proxies, datacenter proxies, rotating IPs, session handling 🏆 Data Storage & Processing: PostgreSQL, MongoDB, Redis, Pandas, Parquet 🏆 Task Scheduling & Queues: Celery, RabbitMQ, Apache Airflow 🏆 Cloud & Deployment: AWS Lambda, Google Cloud Platform, Docker, Kubernetes 🏆 Security & Anti-Detection: Browser spoofing, AI-powered detection avoidance 🏆 DevOps & CI/CD: Git, GitHub Actions, Jenkins, Azure DevOps I focus on building high-performance, scalable, and reliable solutions for tasks such as web scraping, automation, API integrations, and backend services. Whether you need data extraction, automated workflows, or custom Python tools, I aim to deliver clean and efficient solutions tailored to your project needs. I continuously improve my skills and stay up to date with new technologies to ensure stable, efficient, and production-ready systems for every project. 🚀

Main specialization – C++ (STL/MFC, QT, PostgreSQL, C# - on board). 15+ years of experience. Open to start new project on following tech stack: 1. Web: Python (any web framework), React, React-Admin, PostgreSQL, Dockers, Amazon Web Services, FreeSwitch. 2. Desktop, client/server solutions: C++, QT Framework, QML, ModBus, C#. Last few years work with C++ on Debian (PostgreSQL, ncurses, thermal printer). Recently extensively switched to QT framework (Music Score scanning software). Had a chance to use general logic experience to lead engagement projects in completely unknown for me areas like Lotus Notes/Domino, software for greenhouse heating systems construction, some projects on Delphi. Searching clients for cooperation to outsource software products development. My formula: Scope of Work – Time – Budget (W-T-B). W-T-B key principles: - establish project required development process; - define milestones; - provide “access points” for process control from a client side; - self-documented code; - quality assurance; - support.

Personal Statement I am an Embedded Linux and Python Developer focused on building software that interacts with real hardware. My experience includes Raspberry Pi, Linux, sensors, automation, hardware integration, and backend development. I enjoy creating reliable, maintainable software with clean architecture and modular design. Alongside embedded development, I have experience building REST APIs, working with databases, and deploying applications using Docker. I am continuously improving my skills in embedded systems, robotics, and Linux while building practical solutions that combine hardware and software. Core Experience * Python development * Raspberry Pi development * Linux-based systems * Hardware integration (GPIO, I2C, SPI, UART) * Sensor integration and automation * REST API development with FastAPI and Flask * PostgreSQL and MySQL * Docker deployment * Linux server administration (Arch Linux, Ubuntu, Fedora) Skills Languages * Python * SQL * Bash * JavaScript (basic) * C/C++ Embedded & Linux * Raspberry Pi * Embedded Linux * GPIO * I2C * SPI * UART * Hardware Integration Backend * FastAPI * Flask * REST APIs * PostgreSQL * MySQL Tools * Docker * Git * Linux Administration Interests * Embedded Systems * Robotics * Linux * Automation * System Architecture

Dedicated Python developer who will help you to convert your vision and business requirements into working software solution. I have 3+ years of experience in Python backend development for web-applications and API integrations. I work with Python, Django, FastAPI, and Flask frameworks. I am not just writing the code, I help my clients to achieve their business needs, and develop functional requirements. Also, I am always open for development and improvement, and try to use the latest industry trends in my solutions. I have technical expertise in supporting object-oriented programming applications, and have an experience with Python development on Linux. I am also experienced in writing SQL and ORM queries, as well as deploying applications on AWS. 💪 More about my skills that will help us achieve the best result: ✅ FastAPI, Django/DRF, Flask, Celery, SQLAlchemy, Pydantic, Streamlit ✅ PostgreSQL, SQLite, MySQL, Alembic; ✅ NoSQL - MongoDB, Neo4j, Redis; ✅ AWS EC2, Cognito, Lambda, boto3 ✅ GCP, Cloud Functions ✅ JWT, oauth2 ✅ QuickBooks API, OpenAI ✅ API, REST ✅ Swagger/OpenAPI ✅ Docker, Docker Compose ✅ Bootstrap, JavaScript, HTML, CSS ✅ MacOS, Linux, Windows ✅ Git, GitHub, GitLab, BitBucket ✅ Agile, Scrum, Jira, Asana You can expect a hardworking dedicated team-member, focused on team collaboration & client needs, staying calm under pressure, and flexible about prioritization and change requests to ensure the client is happy. Feel free to DM me with your project requirements and your expectations. I look forward to the possibility of working together on future projects! Thank you for your consideration. Vasyl