- Worked within Agile/Scrum methodologies to manage and deliver tasks efficiently, leading to a 47% increase in project delivery speed.- Implemented frontend architecture with a strong focus on state management and streamlined UI workflows, resulting in a 28% improvement in application performance.- Designed and developed complex UI components using React/React Native, JavaScript frameworks, and CSS libraries, improving usability by 40%.- Integrated SDKs into UI components to enhance functionality, contributing to a 32% boost in overall application performance.- Wrote and maintained extensive unit tests using Jest, achieving a 58% increase in code coverage and ensuring high-quality deliverables.- Integrated RESTful APIs into frontend components, improving data handling efficiency and reducing API call times by 20%.- Designed robust backend and database architectures, adhering to industry best practices and optimizing them to meet specific business needs.- Performed comprehensive end-to-end testing before each deployment, leading to a 63% reduction in post-deployment issues.- Debugged issues, solved technical challenges, conducted thorough code reviews, and mentored junior developers, enhancing team productivity by 22%.- Created technical documentation and visual diagrams for business stakeholders, streamlining communication and project planning.- Designed and implemented frontend architecture, including state management workflows, across multiple applications, resulting in a 41% improvement in development efficiency.- Successfully integrated CMS SDKs into front-end components, building dynamic content management solutions that increased user engagement by 32%.- Collaborated closely with the UI/UX team to create intuitive interfaces, improving customer satisfaction ratings by 21%.- Led a team of developers in an Agile environment, delivering updates promptly, which led to a 50% decrease in time to market for new features.

- Worked within Agile frameworks to ensure efficient development cycles, conducting regular sprints and collaborative planning. Increased project delivery speed by 27% through improved sprint planning and task prioritization.- Designed and implemented frontend architecture, developing over 250 reusable UI components using JavaScript frameworks (React, Vue, Angular), TypeScript, and CSS libraries. Boosted application performance by 22% through optimization techniques like lazy loading and memoization.- Implemented server-side rendering in React applications using Next.js, leading to a 20% reduction in load times. Integrated CMS SDKs and optimized session handling via AWS Amplify.- Designed and developed over 200 RESTful APIs and microservices using Node.js, Python, and AWS cloud services, reducing API response times by 13%.- Implemented secure authentication systems with AWS Cognito, enhancing data security by 38%. Architected scalable database solutions using MySQL, PostgreSQL, MongoDB, and AWS DynamoDB, improving query performance by 30%.- Developed CI/CD pipelines using Docker and Kubernetes, reducing deployment times by 47%. Improved bug detection rates by 33% through comprehensive testing.- Mentored junior developers, increasing team productivity by 21%. Enhanced stakeholder satisfaction by 23% with clear technical documentation.

- Worked on Scrum project management approach.- Designed UI components based on daily tickets using React, Redux, and 3rd party libraries.- Optimized page size and load times using React top-level functions and upgraded the version of libraries.- Integrated metamask wallet and smart contract functions by connecting 3 blockchain networks (Ethereum, Polygon, and BSC) using Web3.js.- Used npm and Webpack to translate and combine all necessary JS, TS, JSX, SASS, and CSS. - Implemented SSR using Next.js and worked on creating the Docker containers and Docker consoles for managing the application lifecycle. - Participated to implement an Elasticsearch for the various types of search keywords (stocks, people, and posts).- Developed more than 100 APIs including integrating AWS cloud services, while also implementing load-balancing with Nginx to enable NodeJS instances to handle over 6000 concurrent users.- Designed and executed unit testing scripts in TDD environments using Junit API and PowerMock API.- Optimized microservices utilizing Node.js and ES6 as an interface to both MySQL and MongoDB databases.- Optimized all legacy data storages and search queries for the high-volume external endpoints utilizing Node.js, Express.js, and nest.js, resulting in the minimization of the average response time by 34%. - Implemented a comprehensive CI/CD pipeline, reducing deployment times by 40% and increasing release frequency.

- Designed and developed websites and web applications (FE & BE) based on specific business needs for customer service and online services.- Migrated PHP websites to JavaScript & TypeScript-based (React, React Native, Flux, Redux, Angular, Vue, Webpack, Babel) web applications according to customer’s requirements, improving performance by 17%.- Designed and developed PHP (Laravel/Cognito)/Vue-based web applications and integrated payment gateways, enhancing transaction speed and reliability by 33%.- Redesigned database structure for optimization, increasing data retrieval efficiency by 21%. Fixed bugs and updated features on existing applications.- Developed custom backend APIs using Node, Express, PHP, Laravel, MySQL, and MongoDB, boosting system response time by 26%. Also wrote scripts to manage AWS resources from API calls using SDK and worked on AWS CLI.- Created numerous serverless functions in various languages (Node, PHP, Python) using AWS Lambda, resulting in a 12% reduction in deployment costs.- Assisted in the maintenance and improvement of the company codebase, leading to a 13% increase in development efficiency.- Enhanced the existing testing processes, reducing software defects by 18%.

- Provided effective and functional web and mobile designs to 5 small companies, addressing their specific needs.- Spearheaded the development of a feature-rich analytics platform, integrating HTML5, CSS3, React, and React Native, boosting customer insights by 35%.- Collaborated closely with the UI/UX design team to create intuitive interfaces that improved customer satisfaction ratings by 27%.- Redesigned layouts, menus, forms with validation, pop-ups, and slide shows using JS/JQuery.- Led the integration of RESTful API services for real-time inventory management, enhancing system reliability by 45%.- Optimized SQL and NoSQL database operations within core product services, improving transaction speeds by 34% in high-volume scenarios.- Increased mobile engagement by 27% through effective React Native implementation, resulting in higher user retention and app performance.