Senior Frontend Engineer: AI-Powered React & TS

MCS Group; Belfast City District; On-site; GBP 51,000 - 85,000; Full time

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Job summary

MCS Group is seeking a Senior Front-End Engineer in Belfast to join its product engineering team. This hands-on role focuses on React and TypeScript, building AI-powered, dynamic UIs that scale with the product. You will shape front-end architecture and collaborate with Product, Design and Backend teams to deliver production-ready features.

You will tackle complex state, performance, accessibility and cross-location collaboration while influencing engineering standards and UI quality.

Qualifications

• Strong commercial experience with React and TypeScript.
• Experience building dynamic data-driven UIs and AI-powered features.
• Ability to work with Product, Design and Backend teams across locations.
• Strong focus on accessibility and performance.
• Experience delivering production-ready features in a fast-paced environment.

Responsibilities

• Build complex front-end applications using React and TypeScript.
• Develop dynamic UIs that render from data, configuration or AI outputs.
• Create conversational and chat-style product experiences.
• Integrate AI-powered functionality into customer-facing products.
• Design reusable components and scalable front-end architecture.
• Manage complex application state and asynchronous data flows.
• Optimize front-end performance and ensure accessibility.
• Collaborate with Product, Design and Backend teams.

Skills

React

TypeScript

Hooks

State management

Performance optimization

Accessibility

AI-powered features

Chat interfaces

Distributed teams

Tools

Webpack

CI/CD

Git

Job description

MCS Group is seeking a Senior Front-End Engineer in Belfast to join its product engineering team. This hands-on role focuses on React and TypeScript, building AI-powered, dynamic UIs that scale with the product. You will shape front-end architecture and collaborate with Product, Design and Backend teams to deliver production-ready features.

You will tackle complex state, performance, accessibility and cross-location collaboration while influencing engineering standards and UI quality.