UI Developer

Summary: The UI Developer role requires candidates to demonstrate their technical skills through a HackerEarth coding assessment. The position focuses on front-end development using various technologies, including JavaScript, ReactJS, and CSS, with an emphasis on accessibility and testing practices. Candidates must have extensive experience in React and related tools, and the role is structured as PAYE through an umbrella company.

Key Responsibilities:

• Complete a HackerEarth coding assessment to evaluate technical skills and problem-solving abilities.
• Front end development experience using Javascript and jQuery, HTML5, ReactJS and other UI technologies.
• Strong experience with CSS3 and CSS pre-processors.
• Strong experience with JavaScript and working with React, Redux, node.js.
• Strong experience of working with AJAX / JSON.
• Strong understanding of accessibility standards and its application.
• Strong understanding of TDD with experience of automated unit testing using mock object frameworks.
• Knowledge of SCM tools like GIT / Perforce.
• Knowledge of tools like SonarQube, Grunt/gulp, npm.
• Working knowledge of Javascript unit testing.
• Knowledge of Network Performance optimization.

Key Skills:

• Javascript (ES6, HTML5, CSS3).
• Minimum 5-7 years extensive experience in ReactJs, hooks and context API.
• Experience with state management with Redux.
• REST integration and Ajax (XHR).
• Exposure to unit testing with Jest, Enzyme, React Testing Library Nightwatch.
• GIT.

Salary (Rate): £500.00 per day

City: Knutsford

Country: United Kingdom

Working Arrangements: undetermined

IR35 Status: inside IR35

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

Role Title: UI Developer
Location: Knutsford
Duration: ASAP - 30/09/2025
MUST BE PAYE THROUGH UMBRELLA

Role Description:

Candidates will be required to complete a HackerEarth coding assessment to evaluate their technical skills and problem-solving abilities.
* Front end development experience using Javascript and jQuery, HTML5, ReactJS and other UI technologies
* Strong experience with CSS3 and CSS pre-processors
* Strong experience with JavaScript and working with React, Redux, node.js
* Strong experience of working with AJAX / JSON
* Strong understanding of accessibility standards and its application
* Strong understanding of TDD with experience of automated unit testing using mock object frameworks.
* Knowledge of SCM tools like GIT / Perforce
* Knowledge of tools like SonarQube, Grunt/gulp, npm
* Working knowledge of Javascript unit testing
* Knowledge of Network Performance optimization

Essential Skills
* Javascript
o ES6, HTML5, CSS3 - If you're a creative type let's see that SASS and LESS
* Minium 5-7 years extensive experience in ReactJs, hooks and context API.
* Experience with state management with Redux.
* REST integration and Ajax (XHR)
* Exposure to unit testing with Jest, Enzyme, React Testing Library Nightwatch (or if you're really on the money tell us what you know about Cypress)
* GIT