Responsibilities & achievements

• Determined technologies to build a project on • Project setup from scratch (FE and BE) • Implementation of a design, add business logic • Working with graphics and animation • Created and optimized Lambda functions to handle high volumes of requests and process large amounts of data in real-time. • Designed and implemented complex workflows using AWS Step Functions, leveraging its state machine and event-driven architecture. • Connect API to the front-end • Conducted regular testing and debugging of the back-end codebase, utilizing tools such as Mocha and Postman, and collaborated with teammates and designer to ensure seamless integration and user experience. • CI/CD process configuration

Responsibilities & achievements

• Designed and developed large-scale single-page applications (SPAs) using React, leveraging its component-based architecture, state management, and virtual DOM. • Implemented complex user interfaces and interactive features using React, utilizing its built-in hooks, context, and higher-order components. • Utilized Redux for state management, and implemented middleware for asynchronous operations. Used Axios for HTTP requests and Socket.io for real-time communication. • Designed and developed a large-scale microservices architecture using Nest.js and AWS services such as ECS, Lambda, and API Gateway, ensuring scalability, fault tolerance, and security. • Utilized Nest.js libraries such as TypeORM to integrate with databases MySQL, PostgreSQL, and Redis, and implemented data access layers and repositories. • Optimized Nest.js applications for performance, scalability, and security, using techniques: caching, throttling, and rate limiting, and implementing authentication and authorization mechanisms using JWT.

Responsibilities & achievements

• Implement pixel-perfect markup and interactive animations from scratch • Lead a small team of 3-4 people • Optimized React applications for performance and scalability, using techniques such as code splitting, lazy loading, and memoization, and implementing testing and debugging tools utilizing Jest and React Developer Tools. • Developed a responsive and mobile-first design approach using React and CSS frameworks Bootstrap, and utilized media queries and viewport units for cross-device compatibility.

Responsibilities & achievements

• Utilized Next.js server-side rendering and static site generation to improve the application's performance, reduce page load times, and optimize search engine optimization (SEO). • Implemented state management using Redux, leveraging its centralized store and middleware for asynchronous operations, and integrated with third-party APIs • Utilized the Express.js framework to build scalable and robust RESTful APIs for serverless application, leveraging middleware for authentication, validation, and error handling. • Implemented TypeScript to ensure code reliability and maintainability, leveraging its static type checking and object-oriented features. • Integrated serverless applications with various AWS services such as S3, DynamoDB, and SNS, using the AWS SDK • Optimized serverless application for performance and cost, using techniques such as code splitting, caching, and asynchronous programming, and leveraging AWS Lambda features such as provisioned concurrency and the Lambda power tuning tool.

Responsibilities & achievements

• Developed and implemented new modules and features for a content management system (CMS) using JavaScript, HTML, and CSS, ensuring compatibility and consistency with the existing codebase and design specifications. • Conducted regular maintenance and debugging of the CMS codebase, utilizing Chrome Developer Tools and Visual Studio Code to troubleshoot CSS and JavaScript bugs. • Communicated effectively with designers and other developers through video calls or messaging platforms such as Slack, ensuring clear and timely communication to meet project deadlines and objectives.

Responsibilities & achievements

• Collaborated with a team of developers to design and implement the front-end of banking applications using React.js, ensuring compliance with industry standards and security protocols. • Utilized best practices for React.js development, such as functional components, hooks, and Redux for state management, and worked closely with back-end developers to ensure seamless integration with the server-side codebase. • Conducted regular testing and debugging of the front-end codebase, utilizing Jest, and Cypress, and participated in code reviews and quality assurance processes to ensure high-quality, error-free code.