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- Enhanced code reusability and maintainability by dividing modules into monorepo - Launched a comprehensive invoice flow for freelance profiles, incorporating robust validation and various branches - Integrated e-signature and ID verification features to streamline user authentication processes - Established a thorough git flow, ensuring post-commit checks with ESLint and Prettier standards - Added multi-language support to the app, increasing its user base by 20% and enhancing its accessibility to a global audience - Built a dynamic price calculator module, optimizing user experience and accuracy

- Designed and extended architecture enabling database engineers to add new rows in specific tables, with the front-end side automatically generating a complete module that includes routes, virtualized tables, necessary filtering, and actions Constructed a custom cache mechanism using Apollo GraphQL, enabling dynamic query updates based on subscription events and optimizing performance, resulting in a 35% reduction in server requests and improvement in data retrieval speed - Implemented a custom form builder. This tool allows the creation of complex forms with dependent fields, complex validation and works with APIs in real-time - Rewrote a legacy report builder, creating a separate module with drag-and-drop features, improving report generation flexibility and user experience by 40% - Led and involved the front-end team in improving end-to-end testing - Collaborated with up to 10 front-end devs, communicating ideas for project success and conducted thorough code reviews to maintain code quality and adhere to best practices

- Developed React Native and Web versions of the NFT game card trading platform, creating separate libraries and implementing high-quality animations for both mobile and web versions, resulting a 25% boost in overall platform retention - Engineered the complete trading card flow using Solidity smart contracts, ensuring secure and efficient transactions on the frontend which led 40% reduction in transaction errors - Implemented a feature to open card packs, generating random cards to enhance user engagement with cool animation - Created a card collection screen, providing users with a comprehensive and interactive view of their card inventory

- Built a sophisticated registration process with dynamic branching logic based on user choices - Designed a high-quality, pixel-perfect React component library - Engineered an eShop with Next.js, expanding the platform's capabilities and enhancing user engagement - Integrated SSR to improve initial load times and SEO, resulting in a 30% increase in page speed scores

- Developed an online banking ABS platform, ensuring secure and efficient handling of banking operations React and .NET Core - Created and optimized several types of reports using complex SQL queries to enhance data analysis and decision-making - Supervised and trained interns in preparing and executing learning plans for Online Bank new employees