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)