Senior React.js Engineer - London

• Design, develop and maintain high-quality, scalable web applications using React.js.
• Build reusable, maintainable and performant UI components aligned to enterprise standards.
• Work closely with architects, designers, product teams and Back End engineers to deliver robust end-to-end solutions.
• Integrate and consume RESTful APIs and collaborate with Back End teams on API design and optimisation.
• Implement and maintain micro Front End architectures using modern tooling and module federation principles.
• Ensure solutions meet key Non-Functional Requirements (NFRs), including security, accessibility, performance and scalability.
• Contribute to CI/CD pipelines, automated testing and deployment processes.
• Participate in code reviews, technical design sessions and architectural discussions.
• Drive best practices around component architecture, state management, testing and Front End performance optimisation.

Frontend Development

4-5+ years' commercial experience in Frontend Development

Strong hands-on development experience with React.js

Excellent coding skills using JavaScript (ES6+), HTML5 and CSS3

Strong understanding of responsive UI/UX design principles

Hands-on experience with:

• Material-UI (MUI)
• Styled Components
• Webpack
• Rollup
• Storybook
• React Router DOM (including complex parent-child routing)
• DOM manipulation techniques

Expertise in state management frameworks including:

• Redux
• Zustand
• Context API
• Custom Hooks

Strong understanding of:

• Component architecture
• Reusability patterns
• Performance optimisation
• Frontend design principles

Hands-on experience with automated testing using:

• Jest
• React Testing Library

Backend & APIs

Experience integrating and consuming RESTful APIs

Cloud, DevOps & Deployment

Experience deploying Front End applications within Microsoft Azure Cloud

Experience with Azure DevOps

Knowledge of CI/CD pipelines and automated build/deployment processes

Micro Frontends

Experience or strong understanding of:

• Module Federation
• Micro Front End architecture
• Large-scale distributed Front End applications

Non-Functional Requirements (NFRs)

Strong understanding and practical experience of:

• Web application security
• Performance optimisation
• Accessibility (WCAG)
• Scalability
• Resilience

Desirable Experience

Experience with Next.js for Server Side rendering and SEO optimisation

Experience using DevExtreme DataGrid and DevExtreme BI Dashboards

Experience with ExcelJS for advanced export and reporting capabilities