Front End Engineer

  • American Express
  • London, UK
  • Apr 15, 2020
Full time Engineering Front-end Development Information Technology Software Development Technology

Job Description

You’ll do more than the expected. You’ll do the unexpected. 

We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing platform based application features and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these features and the overall application are robust and easy to maintain.

You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. You should have previous experience building web interfaces and a solid understanding of design language systems.

 

Responsibilities:

  • Developing new user-facing features using JavaScript with strong emphasis on React.js
  • Building reusable cross platform components and front-end libraries for future use
  • Translating designs and wireframes into high quality code
  • Optimizing components for maximum performance across a vast array of web-capable devices and browsers
  • Solid understanding on modular design and single responsibility principle

 

Qualifications

Required skills:

  • Strong proficiency in JavaScript and CSS, including DOM manipulation and the JavaScript object model
  • Thorough understanding of React.js, its core principles, and workflows (such as Flux or Redux)
  • Familiarity with newer specifications of EcmaScript
  • Knowledge of HTTP2 and websockets
  • Experience with data structure libraries (e.g., Immutable.js)
  • Knowledge of isomorphic React is a plus
  • Familiar with Server Side Rendering in JavaScript
  • Understanding differing security models, with knowledge of AuthN and AuthZ principles
  • Solid understanding of RESTful APIs and GraphQL
  • Solid understanding of JSON Schemas and OPEN API
  • Experience with modern front-end build pipelines and tools
  • Experience with common front-end development tools such as Babel, Webpack, NPM, yarn, etc.
  • Strong understanding of Accessibility and Web Standards
  • Experience with both Responsive and Adaptive Web Design
  • Experience with using design language systems or similar
  • Ability to understand business requirements and translate them into technical requirements
  • Ability to perform benchmarking and optimization
  • Ability to debug performance and memory issues in complex JS applications