As a Software Development Engineer 3 - Frontend, you are a senior individual contributor at Tesco, specializing in building scalable, performant, and secure web applications. At this level, your expertise in modern frontend technologies and architectural patterns is assumed, and you have demonstrated significant technical depth and breadth in designing and implementing complex UI systems.
You will play an active role in technical leadership—driving frontend architecture decisions, influencing tech strategies beyond your immediate team, and ensuring best practices in performance, security, and maintainability. You take ownership and accountability for the development of products within your domain, collaborating closely with cross-functional teams to deliver high-quality user experiences.
Beyond coding, you contribute to building organizational capability through mentoring, coaching, and guiding engineers, as well as participating in hiring activities. You are expected to set benchmarks for frontend excellence, advocate for modern engineering practices, and help shape the future of our technology landscape.
[[ Responsibilities ]]
Build Micro Frontend (MFE) web applications that are domain-driven and scalable.
Architect applications for complex use cases while maintaining simplicity and clean code.
Ensure applications are highly performant, secure, and optimized for scalability.
Actively participate in design and code reviews, setting high standards for quality.
Analyze user feedback and collaborate with optimization and analytics teams to improve UX.
Drive rapid feature development, bug fixes, and prototyping.
Mentor SDE II engineers on coding practices, patterns, and design principles.
Develop new user-facing features and maintain existing ones using React.js with TypeScript.
Build reusable components and front-end libraries for future use.
Maintain strong security posture and ensure compliance with CSP and SEO best practices.
Monitor and improve Web Vitals and maintain high code coverage through unit and integration tests.
Collaborate with cross-functional teams to drive project deliveries.
Contribute to and influence tech strategies at the organizational level beyond your immediate team.
[[ Skills ]]
8+ years of experience as a Software UI Engineer, with at least 2 years in Micro Frontends.
Proven experience in designing, programming, and implementing large-scale UI systems.
Hands-on expertise in React, TypeScript, HTML5, CSS3, and modern ECMAScript standards.
Experience with build tools (Vite, Webpack) and monorepo management (e.g., Lerna).
Strong understanding of performance optimization, including baseline measurement and tuning.
Familiarity with GitHub Actions, CI/CD pipelines, and Agile methodologies.
Knowledge of SEO, Content Security Policy (CSP), and modern authorization mechanisms (OAuth2, SSO).
Ability to translate business requirements into technical solutions.
Excellent analytical, problem-solving, and communication skills.
Experience with project management tools (preferably JIRA).
Strong mentoring capability and ability to guide junior developers.