Senior Web Engineer

PaymentSense; Greater London; On-site; GBP 25,000 - 65,000; Full time

Job summary

PaymentSense in the United Kingdom is seeking a Web Engineer to design and develop new frontend features using React, TypeScript and Next.js. You will collaborate with design and product teams to create user-friendly experiences and participate in code reviews to shape our technical direction.

This role also involves mentoring junior colleagues, contributing to our Web Chapter, and upholding accessibility and performance standards in a fast-paced, office-first environment with 4+ days in the

Qualifications

• Professional experience in frontend web development with React, TypeScript and Next.js.
• Deep understanding of modern frontend architecture including state management, components, and hooks.
• Experience with Jest or Cypress and CSS-in-JS libraries like Vanilla Extract or Emotion.
• Solid grasp of CI/CD, version control with Git, and how backend APIs like GraphQL integrate with frontend systems.
• Strong communication and cross-functional collaboration skills.
• Experience contributing to a design system such as Storybook is a strong plus.
• Knowledge of web accessibility standards is a strong plus.

Responsibilities

• Technically design and develop new product features using modern frontend technologies, writing high-quality, well-tested, and maintainable code.
• Collaborate with design and product teams to define user experiences and technical requirements, ensuring we build features that solve customer problems.
• Participate actively in code reviews, architectural discussions, and team planning to drive our technical direction forward.
• Contribute to our collaborative web engineering culture by participating in the Web Chapter.
• Mentor junior colleagues in modern best practices.

Skills

React

TypeScript

Next.js

State management

Jest

Cypress

CSS-in-JS

GraphQL

CI/CD

Git

Storybook

Accessibility

Tools

Cypress

Jest

GraphQL

Storybook

Git

Vanilla Extract

Emotion

Job description

Salary: £25,000 - 65,000 per year

Requirements

• Professional experience in frontend web development, with expert knowledge of React, TypeScript, and Next.js.
• A deep understanding of modern frontend architecture, including state management, component patterns, and hooks.
• Experience with web testing frameworks such as Jest or Cypress and CSS-in-JS libraries such as Vanilla Extract or Emotion.
• A solid grasp of CI/CD processes, version control with Git, and how backend APIs like GraphQL integrate with frontend systems.
• Strong communication and cross-functional collaboration skills.
• Experience contributing to a design system such as Storybook is a strong plus.
• Knowledge of web accessibility standards is a strong plus.

Responsibilities

• Technically design and develop new product features using modern frontend technologies, writing high-quality, well-tested, and maintainable code.
• Collaborate with design and product teams to define user experiences and technical requirements, ensuring we build features that solve customer problems.
• Participate actively in code reviews, architectural discussions, and team planning to drive our technical direction forward.
• Contribute to our collaborative web engineering culture by participating in the Web Chapter.
• Mentor junior colleagues in modern best practices.

Technologies

• Backend
• CI/CD
• CSS
• Cypress
• Frontend
• Git
• GraphQL
• Jest
• LESS
• React
• Storybook
• TypeScript
• Web
• JavaScript
• Spark

More

Were reinventing payments. In less than four years, we disrupted the market to become the largest and most loved acquirer in the UK. Our payments infrastructure is purpose-built for in-person commerce, and over 150,000 customers across four countries transact billions with us every year. We are a company with a strong, collaborative culture where our people are our greatest investment, and we give exceptional people autonomy, trust, and ownership to thrive. As a Web Engineer, youll join our Customer Apps team to build and scale customer-facing applications that help businesses run smoothly, transforming how customers interact with us through a single, intuitive suite of tools across multiple product domains. We believe our best work happens when we collaborate in person, so we work office-first with 4+ days per week in the office. Our offices across Europe offer quiet zones, collaboration spaces, and social hubs, and we value being curious, relentless, and customer-obsessed. We also care deeply about diversity, equity, and inclusion, building teams that reflect the businesses we serve and helping employees thrive.

last updated 36 week of 2026