Developed a SaaS mini-apps for Telegram, enabling e-commerce automation with seamless payment processing and subscription management. Led the project from concept to deployment, strengthening expertise in full-stack development and product management. Integrated 27+ payment systems, ensuring global accessibility and seamless transactions. Implemented auto-subscription management, optimizing customer retention and revenue flow. Built custom design personalization tools, allowing users to tailor their storefronts. Designed and deployed a scalable architecture, leveraging modern cloud-based technologies. Managed all development stages, including backend, frontend, deployment, and system optimization. Main Stack: Next.js, Vercel, Telegram API, Redis, PostgreSQL, Blob Store, SCSS. Key Soft Skills Developed: Product ownership, full-stack architecture, API integration, and scalability optimization.

Worked on a high-traffic ophthalmology e-commerce platform, integrating Shopify and multiple payment systems. Focused on legacy code refactoring, performance optimization, and security enhancements, ensuring a stable, secure, and scalable online experience. Refactored and optimized legacy code, significantly improving website speed, security, and maintainability. Resolved critical build issues that impacted deployment stability. Enhanced website performance, reducing load times and optimizing resource usage. Participated in workflow improvements, streamlining development and deployment processes. Strengthened stress tolerance by handling high-pressure tasks and resolving urgent production issues within tight deadlines. Main Stack: React, Gatsby, GraphQL, SCSS, TypeScript, Webpack, Cypress. Key Soft Skills Developed: Problem-solving under pressure, codebase optimization, security best practices, and workflow automation.

Led the design and development of two key applications for fleet management, optimizing operational efficiency for B2B clients with fleets ranging from 80 to 2,000+ vehicles. Developed solutions that streamlined complex managerial processes, significantly reducing resource consumption across multiple departments. Designed application architecture and led the end-to-end development of two major web applications: Photo App – a mobile web app for documenting vehicle damage and accidents through photos. Calculator – a complex service aggregator uniting multiple systems for appointment scheduling and cost calculations. Ensured high code quality, security, and performance optimization for both new and existing applications. Maintained and improved existing fleet management services, enhancing speed, security, and error handling. Managed task estimation, delegation, and development to ensure efficient delivery. Main Stack: Nest.js, React, Next.js, Zustand, TypeScript, React Query, Ant Design, Bootstrap.js, SCSS, Styled-components, Nginx, GitLab, AWS, PostgreSQL, React Hook Form. Key Soft Skills Developed: Technical leadership, architecture design, process optimization, and task delegation.

Worked on multiple integrations and widget development for Wix, WordPress, and acquired companies' websites, enhancing payment processing, session management, and API connectivity. Developed a payment widget for Wix CMS, integrating vCita API to enable seamless transactions. Built a proxy server for handling secure communication between Wix and vCita API. Developed an interactive UI using Vue.js. Technologies: Express.js, Vue.js, Google Cloud, OAuth 2.0, MongoDB. Created three WordPress plugins, extending vCita functionalities within WordPress. Developed a proxy server to handle session persistence between WordPress and vCita. Designed and implemented custom APIs to enhance functionality. Technologies: Express.js, Google Cloud, OAuth 2.0, Redis. Developed multiple widgets for websites acquired by vCita, integrating advanced features. Built React-based widgets that seamlessly connected to the vCita API. Worked with Google Email Settings API to enhance email-related functionalities. Technologies: PHP, React, ES6, MySQL. Key Soft Skills Developed: API integration, cross-platform development, scalability optimization, and problem-solving.

Developed 7 projects across different industries, including 2 SaaS platforms, 2 digital products, and 3 corporate websites for American companies. Worked closely with backend developers and designers to ensure efficient collaboration, high-quality code, and optimized development timelines. Participated in projects from the initial planning phase, contributing to technical documentation, design discussions, and architecture decisions. Anticipated and resolved potential issues early in the planning and design stages, improving project efficiency and quality. Built authentication systems, e-commerce platforms, user profile management, real-time chat applications, and complex multi-level forms. Developed highly interactive UI/UX solutions, implementing complex design features with precision. Ensured scalable and maintainable applications using modern development methodologies and strong code standards. Main Stack: ES7, React, Redux, Vue.js, Node.js, Express.js, AWS, Google Cloud, Google Analytics, PHP, WordPress, MySQL, PostgreSQL, Webpack, LESS, SCSS, Socket.io, Formik, React Hook Form. Key Soft Skills Developed: Cross-team collaboration, technical foresight, problem-solving, and project planning.

Led the full-scale migration of a multi-service platform from ModX to WordPress, implementing a new design, advanced features, and significant performance improvements. Worked directly with the client, providing technical guidance, SEO strategies, and optimization solutions to enhance visibility and user experience. Achieved a major boost in website speed by optimizing server-side rendering, database queries, caching strategies, and asset loading. Conducted an in-depth SEO overhaul, improving search engine indexing, metadata integration, and content structure for higher rankings. Designed and implemented secure and scalable architecture, ensuring seamless user experience across Visa, Education, and Real Estate services. Led project planning and execution, proactively suggesting solutions for performance and security enhancements. Managed direct client communication, providing updates, gathering feedback, and refining the platform to meet business needs. Main Stack: JavaScript, PHP, WordPress, MySQL, SQL, AWS. Key Soft Skills Developed: Project leadership, client communication, performance optimization, and SEO strategy.

Contributed to the development of a DICOM viewer for a major US hospital corporation, enabling doctors to view and edit medical images in the DICOM format, a global standard for medical imaging. Worked in a team of three developers, focusing on canvas-based rendering and efficient data visualization. Developed core DICOM image processing features using plain JavaScript and Tree.js. Optimized Canvas operations for smooth rendering and real-time modifications of medical images. Ensured high performance and responsiveness across different devices. Collaborated with the development team to implement scalable and maintainable front-end architecture. Main Stack: JavaScript (ES6), Tree.js, HTML5, CSS3, Canvas API. Key Soft Skills Developed: Team collaboration, problem-solving, and performance optimization.

Worked as a lead frontend developer on multiple gambling and e-commerce projects, delivering high-performance, user-friendly interfaces. Developed two online casinos from scratch, managed a team of junior developers, and collaborated with designers to enhance UI/UX. Led the front-end development of 5+ projects, including 2 online casinos and 3 e-commerce websites. Designed and implemented engaging slot machine interfaces for gambling platforms using Tree.js, ES6, and jQuery. Built responsive and interactive user interfaces with HTML, CSS3, SCSS, and Bootstrap.js. Integrated frontend with backend services using PHP and Laravel, ensuring seamless performance. Managed and mentored junior developers, improving team efficiency and project delivery. Collaborated closely with designers to enhance user experience and optimize usability. Created development plans, estimated project timelines, and ensured high-quality, maintainable code. Main Stack: Tree.js, ES6, jQuery, HTML, CSS3, SCSS, Bootstrap.js, WordPress, PHP, Laravel. Key Soft Skills Developed: Team leadership, communication, UI/UX collaboration, and project planning.