Principal UI Engineer - Global FinTech - £120k + Bonus - London - React/ TypeScript

JR United Kingdom; Slough; On-site; GBP 100,000 - 120,000; Full time

Job summary

A leading fintech firm is seeking a Principal UI Engineer to drive the future of front-end development. The role involves leading UI architecture, building robust design systems, and collaborating closely with design teams. Ideal candidates will possess over 7 years of experience with React and TypeScript, as well as a passion for innovation in the financial services sector.

Qualifications

• 7+ years of front-end engineering experience required.
• Expertise in building and maintaining design systems.
• Strong communication skills and collaborative mindset.

Responsibilities

• Lead the development of scalable UI systems for a fintech platform.
• Collaborate with product and design teams for alignment on project vision.
• Influence front-end strategy and tooling.

Skills

React

TypeScript

UI engineering

Node.js

Next.js

Accessibility

Developer experience

Problem-solving

Collaboration

Job description

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Principal UI Engineer - Global FinTech - £120k + Bonus - London - React/ TypeScript, slough

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Client:

Opus Recruitment Solutions

Location:

slough, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

4

Posted:

06.06.2025

Expiry Date:

21.07.2025

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Job Description:

Principal UI Engineer – Drive the Front-End Future of Fintech

Join a hyper-growth fintech that’s redefining the global financial landscape through technology. As Principal UI Engineer, you’ll take the lead in building the front-end foundation of a platform that powers high-volume, high-impact financial services across the world.

This is a pivotal role in a company where design and engineering are deeply embedded in the product strategy. You’ll architect scalable, high-performance UI systems, lead a talented team, and shape the future of front-end development in a fast-paced, design-led environment.

? What You’ll Own

• Own and evolve a robust, scalable design system that supports rapid product development across the organisation.
• Define and drive best practices in UI architecture, testing, accessibility, and performance.
• Collaborate closely with product and design teams to align vision with execution.
• Champion a design-first, developer-friendly culture that values quality, velocity, and innovation.
• Influence front-end strategy, tooling, and workflows at scale.
• Play a key role in hiring and scaling the UI function as the company continues its rapid expansion.

? What You Bring

• 7+ years of front-end engineering experience with deep expertise in React and TypeScript.
• Proven expertise in UI engineering, with a strong track record of building and maintaining design systems/ internal tools & libraries (Library maintainer!)
• Experience with Node.js, Next.js, and modern front-end tooling.
• Passion for testing, accessibility, and developer experience.
• Excellent communication skills and a collaborative, problem-solving mindset.
• Bonus: Open-source contributions or community recognition.

? Why This Fintech?

This is a rare opportunity to join a fintech that’s scaling fast, backed by a strong global presence and a relentless focus on innovation. The tech team is agile, ambitious, and empowered to build solutions that redefine how financial services operate. You’ll work alongside visionary leaders, contribute to a culture of excellence, and help shape the future of finance through design-led engineering.