Senior Frontend Software Developer

1 month ago

London, Greater London, United Kingdom Tesco Full time

About the Role

We are seeking a passionate and pragmatic Frontend Software Engineer to join our team at Tesco. As a key member of our engineering team, you will be responsible for developing and implementing scalable frontend systems using modern engineering practices and frontend development tooling and technologies.

Key Responsibilities

  • Develop and implement scalable frontend systems using JavaScript, TypeScript, React, and Node.js
  • Profile and optimize code for improved performance
  • Apply understanding of cohesion and architectural principles to create well-structured, maintainable software
  • Identify patterns in code and refactor towards them where it increases understanding and/or maintainability
  • Translate requirements into tasks and code
  • Develop high-quality code that can lead to rapid delivery, pursuing continuous integration and delivery
  • Commit code early and often, demonstrating understanding of version control and branching strategies
  • Automate everything by default
  • Write secure code by default
  • Write maintainable code and observe basic hygiene practices
  • Implement relevant project instrumentation
  • Follow best practices of continuous BDD/TDD/Performance/Security/Smoke testing
  • Work effectively with product stakeholders to communicate and translate needs into product improvements
  • Lead group discussions on system design and understand domain well enough to work with Product Managers to drive value
  • Support production systems, resolve incidents, and perform root cause analysis
  • Debug/find complex problems and support/maintain the software solution
  • Share knowledge with the wider engineering community
  • Mentor and develop others around you
  • Produce proof of concepts to evaluate new tools

Requirements

  • 5+ years of commercial experience as a Frontend Software Developer
  • Best-practices regarding all aspects of web development, including design, semantic HTML markup, CSS, TypeScript, and related technologies
  • Exposure to a variety of JavaScript frameworks and libraries, such as React, Redux, React-Router, and testing with React Testing Library, Jest, Cypress, Playwright, Jasmine, Enzyme, Mocha
  • Experience of using Node.js to create high-traffic applications, perhaps using Express.js, Sails, Koa, or similar
  • Awareness and practice of UI performance best practices
  • Understanding and exposure to integrating REST API endpoints
  • Strong experience and understanding of industry-standard web accessibility, web design, and usability to support sites cross-browser/platform/device
  • A desire to write readable, maintainable, modular, and extendable code
  • Exposure to the DevOps model
  • Experience in Lean and Agile environments and understanding of principles behind methodologies such as BDD, ATDD, and TDD

Nice to Have

  • Bringing multiple viewport responsive and adaptive web designs to life
  • Modern JavaScript/TypeScript frameworks, including Remix or Next.js
  • Exposure to state machines and statecharts, bonus points if this is with XState
  • Developing web applications within the constraints of "non-standard" devices

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