React UI Developer – TypeScript & Data-Driven Web Apps

Square One Resources; Burgess Hill; On-site; GBP 57,000 - 75,000; Full time

Job summary

Square One Resources is seeking a UI Developer (React/JavaScript) to join a high-performing software engineering team supporting a leading global financial services organisation. You’ll work on modern, data-driven web applications, building reusable React components and integrating with RESTful APIs.

You will design and develop UI features in React/TypeScript, apply JSON Schema-based forms, and contribute to automated testing and code reviews in an Agile environment.

Qualifications

• Strong commercial experience in UI/frontend development.
• Excellent hands-on experience with React JS and TypeScript.
• Strong knowledge of JavaScript ES6, HTML5 and CSS3.
• Experience with React Hooks and functional component architecture.
• Experience with Redux and/or Context API.
• Experience with React Testing Library or comparable frontend testing frameworks.
• Strong experience integrating applications with RESTful APIs.
• Hands-on experience working with JSON and web service technologies.
• Experience developing data-driven UIs and dynamic forms.
• Understanding of frontend performance optimisation techniques.
• Experience working within Agile software development environments.

Responsibilities

• Design and develop modern, scalable web applications using React and TypeScript.
• Build dynamic, data-driven user interfaces and forms, including JSON Schema-based forms.
• Develop reusable React components using functional patterns and React Hooks.
• Implement effective state management using Redux and/or Context API.
• Integrate frontend applications with RESTful APIs and web services.
• Write and maintain automated tests using React Testing Library or similar frameworks.
• Participate in code reviews and contribute to engineering best practices.
• Identify and implement web application performance optimisation opportunities.
• Work closely with product, engineering and other stakeholders in an Agile delivery environment.
• Contribute to the mentoring and development of engineering team members.

Skills

React

TypeScript

JavaScript ES6

React Hooks

Redux

Context API

RESTful APIs

JSON

JSON Schema

Performance optimisation

Agile

React Testing Library

Web forms

Tools

React Testing Library

Job description

Square One Resources is seeking a UI Developer (React/JavaScript) to join a high-performing software engineering team supporting a leading global financial services organisation. You’ll work on modern, data-driven web applications, building reusable React components and integrating with RESTful APIs.

You will design and develop UI features in React/TypeScript, apply JSON Schema-based forms, and contribute to automated testing and code reviews in an Agile environment.