senior front end developer

توضیحات آگهی

At Okala we are looking for a Senior Front End Developer who will take ownership of performance scalability and maintainability of our front end applications In this role you will design robust UI architectures optimize performance at scale and collaborate closely with cross functional teams to deliver reliable production grade systems Your work will directly impact user experience Core Web Vitals and overall application health Responsibilities Develop clean maintainable and reusable front end code using modern JavaScript and TypeScript Architect scalable UI solutions with React js and Next js Collaborate with back end engineers to integrate APIs and server side logic Optimize performance speed and scalability under high traffic conditions Monitor and improve Core Web Vitals LCP CLS INP FID using tools such as Lighthouse and Chrome DevTools Identify performance bottlenecks and implement sustainable engineering improvements Leverage observability tools to analyze application behavior in production Design reusable business logic decoupled from UI components Contribute to CI CD workflows and ensure frontend reliability Stay current with emerging front end technologies and best practices Requirements 5 years of front end development experience with JavaScript ES6 and TypeScript Strong proficiency in React js and Next js Deep understanding of HTML5 semantic web standards and cross browser compatibility Advanced CSS3 knowledge including preprocessors Sass SCSS Less and scalable CSS architectures OOCSS ITCSS etc Experience with Tailwind CSS and UI libraries Material UI Ant Design Experience with modern state management solutions Redux Toolkit Zustand Strong understanding of frontend performance optimization and Core Web Vitals Experience with observability and logging tools e g Kibana Elasticsearch Knowledge of Service Workers Experience with unit integration and E2E testing Jest Cypress Selenium Experience with Monorepo tools Turborepo Nx Familiarity with CI CD pipelines and Docker Experience with Git and version control workflows Nice to have Experience debugging WebView based native applications Experience with Android emulators Proficiency in AI assisted development tools e g ChatGPT Claude Cursor تهران تهران آرژانتین تمام وقت اُکالا کارشناس ارشد جنسیت تفاوتی ندارد اینترنت تجارت الکترونیک خدمات آنلاین