Hire the Best Object Oriented Programming (OOP) Specialists
in Ukraine

Senior developer. Turn-key solutions. Non-typical projects. Expertise: - desktop, backend development; - cross-platform applications; - C#, C/C++, Python, JavaScript, Perl, PHP - .NET, Xamarin - text/data parsing, PDF parsing; - system programming for Windows including drivers; I provide all the aspects of software development: - formalizing customer requirements; - elaborating a solution; - implementing code; - debugging; - post-delivery maintenance; I always stay behind my code. I'm capable of solving non-typical programming tasks that need ingenuity and persistence. If you have a task that nobody could cope with then here you have found the right man!

👋 I'm a senior full-stack developer and engineer, specializing in AI and web platform development. I build robust SaaS solutions and custom applications that drive real business growth, from concept to launch. 🤝 I partner with businesses and startups to build custom full-stack web platforms and SaaS applications, managing the entire project lifecycle from MVP to launch. My focus is on creating scalable, robust software solutions and web applications, perfectly tailored to your specific needs, whether it's a new product, an existing system upgrade, or a long-term development project. I'm an experienced web developer and software engineer, ready to tackle technical challenges and ensure smooth project management. 🚀 I offer comprehensive full-stack web development services, specializing as an expert in AI integration and custom SaaS platform builds. I help clients transform their ideas into powerful, efficient, and user-friendly software applications and websites. This includes frontend and backend development, API integration, and creating custom dashboards and landing pages. I'm adept at building on various online platforms, from custom solutions using React, Next.js, Node.js, Python, PHP, and TypeScript, to working with existing CMS like WordPress (Elementor, WooCommerce), Shopify, Webflow, or Laravel for e-commerce sites, marketplaces, or client portal pages. I can also help with website design, data migration, mobile-responsive design, and ongoing fixes for any bugs, including SEO optimization and HTML/CSS. 💡 With extensive experience as a senior full-stack developer and engineer, I've built and scaled numerous web platforms and SaaS applications. I've learned to deeply understand project requirements, architect efficient systems, and deliver clean, maintainable code across the full stack. My technical expertise spans React, Next.js, Node.js, Python, and PHP, ensuring robust backend and front-end development for any software project. ✅ As an expert full-stack AI developer, I help businesses achieve their goals by building custom, AI-powered web platforms and SaaS solutions. I ensure seamless integration of AI APIs (like Claude) and provide long-term support for your critical projects, including ongoing maintenance and bug fixes. I can also help with AI agent development and data management for your applications. 🛠 I leverage modern technologies like React, Next.js, Node.js, Python, and AI APIs (OpenAI, Claude) to solve complex development challenges. I help clients build robust web applications, integrate custom APIs, and automate workflows, including CRM and ERP systems, with efficiency and security. I'm also experienced with tools like Supabase, n8n, Odoo, and Gohighlevel for backend development, data management, and automation, and can integrate payment gateways like Stripe for e-commerce or portal solutions. I focus on technical implementation and optimization for production-ready software, including data tracking and system setup. I pride myself on clear communication, proactive problem-solving, and a collaborative approach to every project. This ensures a smooth and successful partnership, from initial review and audit to ongoing support and project management. You know, it's all about getting things done right. Ready to build your next big thing? Let's connect and discuss your project! Every big idea starts small — let’s take that first step. Tags: Senior Full-Stack Developer, AI, Website Development, Web Platform, Software Engineer, SaaS Solutions, Custom Applications, Full-Stack Web Development, AI Integration, Backend Development, Frontend Development, API Integration, Project Management, Workflow Automation, Data Management, System Architecture, Technical Implementation, SEO Optimization, Bug Fixes, MVP to Launch, Long-Term Support, Ongoing Maintenance, Custom Dashboards, Landing Pages, Website Design, Data Migration, Mobile-Responsive Design, Production-Ready Software, System Setup, Data Tracking, Project Review, Project Audit, Maintainable Code, Business Growth, New Product Development, Existing System Upgrade, E-commerce Sites, Marketplaces, Client Portal Pages, AI Agent Development, CRM Systems, React, Next.js, Node.js, Python, PHP, TypeScript, WordPress, Elementor, WooCommerce, Shopify, Webflow, Laravel, Supabase, n8n, Odoo, Gohighlevel, Stripe Integration, Claude AI, HTML/CSS, CMS Last update: July 16, 2026

Algorithmic development (3D geometry, image processing, 15 years). C++ development (16 years of experience). Understanding user needs and improving given requirements. Consulting on algorithms.

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. 🙂

Hi! My name is Igor. I'm a Software Developer and Database Specialist with extensive experience in C#, T-SQL, and PL/SQL. I focus on building reliable backend logic, optimizing databases, and analyzing complex technical software. What I can do for you: - Backend Development (C#, .NET, Entity Framework, OOP/SOLID principles) - Software Development & Scripting (C++, C#, Java, Python, Bash/Shell) - Database Architecture, Query Optimization & Scripting (T-SQL, PL/SQL) - Legacy System Migration & Modernization (e.g., migrating outdated databases/codebases to C#/MSSQL) - Game Mechanics Analysis, Feature Breakdown & Documentation - Technical Documentation & System Requirements Analysis I have extensive commercial software engineering experience across banking, logistics, retail, and game mechanics analysis. Teaching computer science is truly my passion - I love mentoring students and breaking down complex concepts. At the same time, I’m here on Upwork for additional earnings and exciting freelance challenges. Working with me means you get both commercial dev experience and clear, easy-to-understand communication. I am looking for projects where I can help you build clean, efficient software or refine database and game systems. I value straightforward communication, structured progress, and timely delivery. Feel free to reach out to discuss your project!

I'm a Senior Full Stack Developer with over 10 years of experience, delivering robust and scalable solutions for various projects. I specialize in modern web development, leveraging Object-Oriented Programming (OOP), cutting-edge PHP, and JavaScript frameworks to build high-quality applications tailored to your needs. Key skills and expertise: - Backend: PHP (Laravel), Node.js, Express.js - Frontend: Angular, Vue.js, HTML/CSS (Bootstrap, SASS, LESS), Responsive & Cross-Platform Design - Databases: MySQL, MongoDB, Redis - API Integration: Facebook, Twitter, Google API, Microsoft Graph API, and more - Tools & Methodologies: Agile, Scrum, Kanban, Git, Jira, Trello, Monday I bring a strong technical foundation, attention to detail, and a commitment to excellence. I focus on writing clean, maintainable code and delivering projects on time while aligning with your business goals. Whether you need a complex system built from scratch or seamless API integrations, I’m here to help. Let’s collaborate to turn your vision into reality!