Senior Front-End Engineer: React/TypeScript & AI UI | Equity

MCS Group; Belfast City District; On-site; GBP 72,000 - 88,000; Full time

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Job summary

MCS Group is recruiting a Senior Front End Engineer for a growing software company in Belfast. You’ll build modern, scalable front-end applications using React and TypeScript, with AI-driven UI components contributing to your work.

You will collaborate with backend, product and AI engineers to shape new features while ensuring performance, reliability, and maintainability across the front-end stack.

Qualifications

• Strong commercial experience as a Front End or Software Engineer.
• Excellent React and TypeScript skills.
• Strong understanding of modern React architecture, component patterns and state management.
• Experience building complex, production‑grade web applications.
• Comfortable consuming APIs and working closely with backend engineering teams.
• An interest in AI-enabled products and new approaches to building user interfaces.

Responsibilities

• Building and developing complex front‑end applications using React and TypeScript.
• Creating reusable components and scalable front‑end architecture.
• Working on interfaces that combine traditional application experiences with AI‑generated and dynamic UI.
• Building the foundations that allow generated components and experiences to be rendered safely and consistently.
• Working closely with backend, product and AI engineers to bring new product features to life.
• Tackling challenges around application state, data flow, performance and responsiveness.
• Helping establish strong engineering standards across the front‑end codebase.
• Reviewing code and supporting other engineers across the team.
• Exploring new patterns and technologies as the way users interact with software continues to evolve.

Skills

React

TypeScript

Frontend architecture

Code review

Performance optimization

Job description

MCS Group is recruiting a Senior Front End Engineer for a growing software company in Belfast. You’ll build modern, scalable front-end applications using React and TypeScript, with AI-driven UI components contributing to your work.

You will collaborate with backend, product and AI engineers to shape new features while ensuring performance, reliability, and maintainability across the front-end stack.