Oleksandr Shumihin

Led frontend development, ensuring high performance, smooth user experience, and scalable architecture. Conducted technical interviews for frontend developers, provided mentorship, and maintained code quality through in-depth code reviews. Key Contributions: • Frontend Leadership & Code Quality – Led the frontend team, interviewed candidates, and maintained high coding standards through thorough reviews and mentoring. • Performance Optimization – Improved app efficiency, optimizing list rendering, animations, and general UI responsiveness. • Custom UI Components – Built custom charts (line, bar), progress indicators, sliders, swipers, and scrollable views, tailored to the product’s requirements. • Advanced Animations – Developed smooth, complex animations using Reanimated + Skia to enhance UI interactions. • Native Module Development – • Implemented a high-performance SQLite module using C++ and JSI, significantly improving database operations. • Created a QR code generation module with image-saving functionality. • Deep Linking – Integrated deep link handling, improving navigation and external content access. • Video Features – Worked on in-app video processing and related functionalities. • Payments & Subscriptions – Integrated in-app purchases and subscription-based payments. • App Publishing – Handled the release process for both the App Store and Google Play, ensuring smooth deployments.

Developed mobile applications for various industries, primarily focusing on e-commerce. Designed and implemented a highly efficient templated framework that significantly accelerated the development of new applications. This solution allowed for seamless customization by modifying configuration files, themes, images, and other key elements, ensuring flexibility and adaptability for different client needs. As a result, this approach enabled rapid deployment of high-quality, tailored applications, reducing development time and improving scalability. The standardized yet highly customizable architecture helped streamline the development process, enhance maintainability, and optimize time-to-market for clients.

Designed and developed a complete communication system from scratch for a transportation company, enabling seamless interaction between dispatchers and drivers. • Built the web frontend for the dispatching platform, allowing dispatchers to make one-on-one and group calls, manage tasks, and coordinate operations. • Developed the backend service in Node.js to process and route calls, ensuring reliable and efficient communication. The system was fully integrated with Twilio for handling voice calls. • Created a mobile application for drivers, enabling them to make and receive calls, accept and manage orders, update order statuses, and streamline their workflow.