Hellen Kasa

Background

About Hellen Kasa

Accomplished Senior UI Developer with 8+ years of experience seeking a similar role. Excelled in end-to-end development and performance optimization, with expertise in crafting responsive and interactive web applications using HTML5, CSS3, JavaScript, Angular, React and Node JS. Adept at optimizing performance, leading migrations to microservices architecture, and enhancing user experiences across devices. Passionate about leveraging cutting-edge solutions to drive innovation and efficiency in web development. Worked on Angular (Version 19,17,16,15,12,9) and ReactJS framework to develop the SPA. Migrated JSP pages to Angular and participated in migrating the application to Angular 19. Good experience on customizing CSS frameworks like Bootstrap, Tailwind and Foundation using CSS preprocessors SASS. Expertise in managing global state with Redux, React Context API, and React Query for effective data handling and synchronization across applications. Involved in all the stages of the Software Development Life Cycle including Requirements, Analysis and Design, Implementation, Integration and Testing, Deployment and Maintenance. Working in SCRUM and Agile methodology that includes attending grooming sessions, sprint planning, user stories estimations, sprint reviews, and daily standup. Extensive experience in creating ADA-compliant, Accessible, Responsive, and Cross-browser compatible web applications, ensuring compliance with WCAG 2.2 standards, ARIA roles, and best practices for inclusive design. Passionate about high-quality web software. Goal-oriented individuals with excellent analytical, problem-solving, communication and interpersonal skills with the ability to interact with individuals at all levels and work independently. Participated in design brainstorming sessions, technical design reviews, formal code reviews, bug triage, and functional walkthroughs Strong knowledge of the Git version control system that includes reverting back to previous commits, merging branches, and dealing with merge conflicts. Experience in implementing unit tests in JavaScript using Jest. Implemented server-side rendering (SSR) and static site generation (SSG) to improve performance and user experience. Deployed and managed scalable web applications on AWS using EC2, Lambda, S3, and CloudFront, reducing latency by 40% Experienced in creating Accessible, Responsive, and Cross-browser compatible web applications, with a strong focus on WCAG compliance, ARIA roles, and implementing design patterns for scalable solutions.