Software Development Engineer III

Responsibilities

• Design, develop, and maintain responsive, high-performance UIs using React.js (Hooks, Functional Components)
• Convert UI/UX designs and wireframes into reusable, scalable, accessible code aligned with Tesco design standards
• Implement and manage state using Redux, Context API, or Zustand
• Optimise applications for performance, speed, Core Web Vitals, and accessibility (WCAG standards)
• Ensure cross-browser compatibility and full responsiveness across device types
• Write unit and integration tests for frontend components (Jest, React Testing Library, Cypress or Playwright)
• Produce test-driven features and demonstrate deep familiarity with TDD development practices
• Follow best practices of continuous BDD / TDD / Performance / Security / Smoke testing
• Identify patterns in code and refactor towards clean, maintainable, modular architecture with minimal guidance
• Profile and optimise existing UI code; reduce bundle size and improve render performance
• Commit code early and often; demonstrate strong understanding of version control and branching strategies
• Automate testing and build pipelines by default; write secure code by default

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