Senior Frontend Engineer

MCS Group; Belfast; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A global financial services company is seeking a Senior Frontend Engineer in Belfast (Hybrid) to design and build modern React/TypeScript applications. This role includes mentoring engineers, driving best practices, and developing high-quality, scalable UI in an Agile environment. Ideal candidates should have strong skills in React and TypeScript, automated testing, and an awareness of performance optimisation and web security. Experience with Figma, Storybook, or AWS is a bonus.

Qualifications

• Experience with designing and building React/TypeScript applications.
• Knowledge of UI performance optimisation and web security.
• Ability to mentor junior engineers and influence engineering standards.

Responsibilities

• Own the design and build of modern frontend applications.
• Collaborate closely with architects and principal engineers.
• Drive best practices for scalable UI development in an Agile environment.

Skills

Strong React

TypeScript

Modern JavaScript

Automated testing (Cypress, Selenium)

Performance optimisation

Web security awareness

Mentoring skills

Tools

Figma

Storybook

AWS

Job description

Senior Frontend Engineer - Belfast (Hybrid)

MCS Group is working exclusively with a global financial services organisation building out their engineering team in Belfast. We're looking for a Senior Frontend Engineer to help deliver business-critical platforms used across international markets.

You'll work closely with architects and principal engineers, owning the design and build of modern React/TypeScript applications. The role involves mentoring others, driving best practice, and contributing to high-quality, scalable UI development in an Agile environment.

Key experience:

• Strong React, TypeScript and modern JavaScript
• Building scalable, maintainable UI components
• Automated testing (Cypress, Selenium or similar)
• Performance optimisation and web security awareness
• Ability to mentor and influence engineering standards

Bonus: Figma, Storybook, AWS, or financial services experience.

If you're interested, message me directly to find out more.