Tesco is seeking a Frontend Engineer with 6–10 years of expertise in React.js with TypeScript and Node.js. The primary focus will be on developing user interface components using well-known React workflows (Flux/Redux) and ensuring applications are secure, performant, robust, and maintainable. The role requires close collaboration with cross-functional teams and a commitment to high-quality design and development.

Responsibilities

• Develop new user-facing features and maintain existing ones using React.js, TypeScript, and Redux/MobX.
• Build reusable components and front-end libraries for scalability.
• Translate designs and wireframes into high-quality code.
• Optimize components for maximum performance across a wide range of devices and browsers.
• Maintain strong security posture of the frontend codebase.
• Monitor and improve Web Vitals performance scores.
• Ensure high test coverage with unit and integration tests.

Technical Expertise

• Strong proficiency in JavaScript and TypeScript, including DOM manipulation.
• Deep understanding of React.js core principles.
• Experience with React workflows (Flux, Redux) and state management libraries (Redux, MobX).
• Proficiency in React Router and react-query.
• Familiarity with ECMAScript latest specifications.
• Knowledge of isomorphic React (plus).
• Experience integrating RESTful APIs.
• Understanding of OAuth 2.0 and SSO for authentication and authorization.
• Familiarity with modern build pipelines and CI/CD tools (e.g., GitHub Actions).
• Proficient with Babel, Webpack, npm, and other front-end development tools.
• Strong grasp of frontend security best practices.
• Experience with benchmarking and optimization for Web Vitals.

Tools & Collaboration

• Version control: Git (preferred).
• Project management: JIRA (preferred).
• Ability to translate business requirements into technical deliverables.

Soft Skills

• Strong problem-solving and analytical abilities.
• Effective communication skills for cross-team collaboration.
• Commitment to collaborative problem-solving, sophisticated design, and quality products.