10 Dec 2025 BBBH61801 React Developer - Contract £90000 - £100000 per annum Belfast

Northern Ireland Water Limited; Belfast; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A growing SaaS client is seeking an experienced Contract React Engineer for a 6-month project based in Belfast. The role entails leading front-end architecture and development, ensuring high-quality UI delivery across complex web applications. Ideal candidates will possess expert skills in React 18+ and TypeScript, with a strong understanding of micro-front-ends and performance optimisation. This position offers hybrid working, outside IR35. Interested candidates should reach out to discuss this opportunity further.

Qualifications

• Expert level skills with React 18+ & TypeScript is essential.
• Strong architectural understanding including micro-front‑ends and design systems.
• Experience with additional tools like Tailwind CSS, React Hooks, and Cypress.

Responsibilities

• Lead React front-end architecture and development.
• Build new features and maintain reusable components.
• Implement high-quality, performant, type-safe code.

Skills

React 18+

TypeScript

Tailwind CSS

React Hooks

Cypress

MSW

Performance optimisation

API-first development

Job description

MCS Group is working with a growing and innovative SaaS client, as they look for an experienced Contract React Engineer to work on a major piece of front-end project work. This role is ideal for someone who has spent their career seriously honing their UI skills, and who wants to take on a lead role within front-end architecture and delivery across complex web applications used globally. The role involves architectural input, hands‑on development, and supporting product teams in delivering performant, scalable and maintainable interfaces.

This is a 6‑month contract, Outside IR35, with a hybrid working model.

Role

• Lead React front‑end architecture and development.
• Build new features and maintain reusable components/design systems.
• Implement high‑quality, performant, type‑safe, test‑driven code.
• Collaborate with product, UX, back‑end and support teams.
• Support issue resolution and contribute to continuous improvement.

Experience

• Expert level skills with React 18+ & TypeScript is essential (advanced hooks, strict typing, performance optimisation). This role is at Principal Engineer or Architect level.
• Strong architectural understanding: micro‑front‑ends, design systems, DDD, API‑first development.
• Additional experience of Tailwind CSS, React Hooks and Cypress and MSW.
• Additional expertise in areas such as optimisation, monitoring, integration or visual design.
• Strong communicator and collaborator, with an ownership mindset with a focus on quality.
• Ability to guide and support other engineers.

Rate: Competitive and negotiable.
IR35: Outside
Location: Hybrid working - Choice of several locations including Belfast
Duration: 6 months

To speak in absolute confidence about this opportunity please send an up to date CV via the link provided or contact Jill Johnston, Head of IT Contracts, at MCS Group 02896 935 509

Even if this position is not right for you, we may have others that are. Please visit MCS Group to view a wide selection of our current jobs www.mcsgroup.jobs

MCS Group is committed to Equality, Diversity, and Inclusion for all, being the first recruitment agency in NI to achieve Bronze Diversity Mark accreditation, if you have a disability which means you require a reasonable adjustment to be considered at any stage of the recruitment process, please contact us and we will endeavour to facilitate the request.

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