My responsibilities include creating visually appealing, user-friendly, and responsive web and mobile applications using front-end technologies like HTML, CSS, and JavaScript, ReactJS, and Ajax, addressing challenges of responsive design. Ensure code testability by writing unit tests with frameworks like Jest and Enzyme, and conducting end user testing and feedback sessions. Implementing user interface designs based on wireframes, mockups utilizing Figma and style guidelines provided by UI/UX designers. Collaborate closely with service teams to design and develop REST API services, facilitating seamless communication between front-end and back-end systems. Participating in code reviews, testing the front-end code, and documenting the code, and collaboration with other team members.

Worked in team ADAM-SHIELD, responsible for managing authentication and permissions in Amazon Ads. Focused on Talos, a hierarchical system built from Amazon's Cloud Directory Service, to manage permissions for different user accounts. Migrated to a new version of Talos, providing an easier way to manage, authorize, and access stored user permissions. Tasks included creating lambdas for older scripts during migration using Java, JavaScript, TypeScript, creating metrics, alarms, and dashboards using Amazon Web Services, and addressing internal customers' issues, and well versed with utilizing AWS Cloud services.

Designed, developed, and tested HTML5, CSS3, Bootstrap, JavaScript, jQuery, and React.JS for websites, ensuring adherence to accessibility and browser standards. Implemented CSS templates with a focus on background, positioning, text, border, margin, padding, and table layouts. Employed optimization techniques such as sprite usage to minimize page size and enhance loading times for improved user experience. Utilized Django's testing framework to write comprehensive unit and integration tests for Python back-end services. Developed user interfaces using React JS and Flux for single-page application (SPA) development, integrating them with back-end services.