Senior Frontend Developer (React)

Seeking a Senior Frontend Engineer with deep expertise in React, scalable state management, design systems, and performance optimization to lead the evolution of a complex website builder platform.

Location: Egypt

Responsibilities

• Lead the migration from Chakra UI v2.8 to Radix UI / Base UI with shadcn and Tailwind CSS
• Architect and maintain a scalable, extensible design system
• Design and optimize complex React component architectures for dynamic website builder environments
• Implement SSR and React Server Components using Next.js App Router
• Ensure high performance across deeply nested dynamic component trees
• Prevent unnecessary re-renders and optimize rendering lifecycle behavior
• Design and manage scalable state architectures using Redux and/or Zustand
• Model normalized state, slice-based architecture, and undo/redo systems
• Define local vs global state boundaries for optimal performance
• Implement drag-and-drop state handling, optimistic updates, and layout persistence
• Establish strict TypeScript patterns across large UI surfaces
• Design token-driven theming strategies including dark mode and brand themes
• Enforce accessibility standards including ARIA compliance, keyboard navigation, and focus management
• Optimize bundle size, apply code splitting, and implement lazy loading strategies
• Implement virtualization and event debouncing for high-frequency UI interactions
• Define frontend architectural boundaries across primitives, design system, editor logic, and runtime rendering layers
• Plan and execute incremental UI migration strategies with feature flags and compatibility adapters
• Define and implement testing strategies including unit, integration, visual regression, accessibility, and E2E testing
• Improve developer experience through CI/CD improvements, monorepo optimization, and build performance enhancements
• Maintain design system documentation using Storybook
• Mentor engineers on state isolation, accessibility best practices, and scalable component APIs
• Conduct architectural RFCs and review code to ensure long-term platform stability
• Balance product flexibility and constraint in a complex website builder environment
• Ensure backward compatibility and extensibility across evolving UI layers

Requirements

• 5+ years of frontend engineering experience with advanced React expertise
• Deep understanding of React internals including reconciliation, rendering lifecycle, and memoization strategies
• Strong experience with Next.js including SSR, React Server Components, streaming, and data fetching patterns
• Proven experience designing scalable state architectures with Redux and/or Zustand
• Hands-on experience building or maintaining a production-grade design system
• Experience migrating UI component libraries safely and incrementally
• Strong expertise in Radix UI or similar headless component libraries
• Advanced proficiency with Tailwind CSS and Class Variance Authority (CVA)
• Expert-level TypeScript including generics, discriminated unions, mapped types, and utility types
• Strong understanding of semantic HTML, accessibility standards, and cross-browser behavior
• Solid foundation in JavaScript internals including closures, async patterns, and event loop mechanics
• Experience optimizing performance in large, dynamic, interactive applications
• Experience with Jest or Vitest, React Testing Library, and E2E testing tools such as Playwright or Cypress
• Familiarity with modern build tools including Vite, Webpack, or Turborepo
• Experience working in monorepo environments
• Familiarity with performance monitoring tools such as Sentry and Web Vitals
• Strong system design and architectural decision-making skills
• Demonstrated leadership in frontend platform ownership and mentoring engineers

Benefits

• All employees benefits for free (our famous games room, daily breakfast, fruits, coffee and other hot drinks, soft drinks and juices, company days out and parties…)
• Social insurance
• Open-door management policy
• Full Medical insurance
• Accommodation and Transportation Allowance
• Friendly environment that values innovation and efficiency
• Exciting opportunities for career growth and talent development
• Feedback encouragement
• Recognition and reward programs
• Competitive salaries and incentives
• Friendly environment
• Flexible and Comfortable schedule
• Fun committees
• Monetary rewards
• Fun, smart and creative people
• Career possibilities with growing team
• Paid vacations
• Social benefits