Oleksii – JavaScript, React, Typescript

The project focused on an e-commerce platform for food distributors, designed specifically for the foodservice industry. The AI-powered system seamlessly integrated with existing workflows to optimize orders, deliveries, and payments while driving revenue. The platform was built using Ruby on Rails for the backend and supported iOS, Android, and web applications as frontends.

• Created an MVP web application, designing and implementing all features supported by native clients;
• Built a UI library based on ChakraUI to ensure consistent design and reusability;
• Wrote unit tests (Jest) and end-to-end tests (Cypress) to ensure code quality and reliability;
• Supervised and mentored a small team of frontend engineers, providing guidance and code reviews.

The project focused on a major navigation platform designed to help users plan and execute drives efficiently. Its primary goal was to reduce traffic and provide drivers with optimal routing. The platform also included several web-based applications, such as a live map, map editor, and carpool management tools.

• Designed and implemented an Analytics Framework, including a client-side library for event tracking and an App Engine service to process data and create BigQuery datasets;
• Applied CSP hash-based headers for multiple web products built with different stacks (RoR, Express, GoLang) to enhance security;
• Migrated legacy web services to App Engine and implemented CI/CD pipelines for streamlined deployment;
• Designed and developed shared web components as reusable UI/UX elements with semantic styling;
• Migrated a live map application to a Single Page Application (SPA) using React and React Router;
• Contributed to scaling the Web SDK, collaborating with external vendors such as automotive partners.

The project focused on a banking processing platform with multiple international R&D centers. The engagement was contract-based, aimed at establishing frontend architecture and development processes to streamline onboarding and support scalable team development.

• Designed the frontend architecture to support a large-scale migration from a monolithic structure to a microservices-based approach;
• Built and led a team of four mid-level engineers, providing guidance and mentorship;
• Established CI/CD pipelines and implemented structured code review processes to ensure code quality;
• Migrated legacy frontend applications into micro-frontends for improved scalability and maintainability;
• Integrated frontends with new microservices-based backends to support modular development and deployment.

A large-scale outsourcing initiative delivering B2B technology solutions for a leading Canadian retail group operating across the automotive, hardware, sports, leisure, and home goods sectors. The project focused on modernizing digital infrastructure and enhancing the customer experience through scalable and efficient web applications.

• Delivered and deployed large-scale eCommerce platforms for sports and outdoor retail brands, ensuring a smooth and high-performance user experience;
• Collaborated closely within a cross-functional team of over 30 professionals, including frontend, backend, and QA engineers, to coordinate development and product releases;
• Initiated and contributed to the early migration of legacy frontend systems to ReactJS, improving maintainability and scalability of the applications.

A fashion retail group operating multiple e-commerce platforms built on Magento, focused on creating scalable online shopping experiences. The project centered around developing a reusable white-label foundation to streamline the launch of new web stores efficiently.

• Led and mentored a frontend team of 10 junior to mid-level engineers, fostering skill development and collaboration;
• Designed and implemented frontend architecture to support easily forked projects based on Magento, enabling faster deployment of new stores;
• Contributed to the setup and optimization of CI/CD pipelines to streamline development and release processes.