Senior Frontend Developer - React
Capco —London
- Full-time
- Hybrid work
- DevOps
- JavaScript
- APIs
- Annual leave
- Life insurance
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Senior Frontend Developer - React

Capco -
London

Quick apply

Job details

Full-time

Benefits

Cycle to work scheme
Annual leave
Company pension
Life insurance

Qualifications

CSS
React
DevOps
JavaScript
SASS
REST
Redux
Angular
APIs
Less (style sheet language)
Vue.js
AI
TypeScript

Full job description

**Senior Frontend Developer (*React***)

Location: London (Hybrid) | Practice Area: Technology & Engineering | Type: Permanent

Bring modern web applications to life in the world of financial services.

The Role

As a Senior Frontend Developer at Capco, you'll craft clean, responsive, and secure web applications that enhance digital experiences for global financial services clients. Working in an agile environment, you'll help shape user interface solutions using React and modern JavaScript technologies while contributing to engineering best practices across multidisciplinary teams. You'll also embrace AI-enabled ways of working, using approved AI and automation tools where appropriate to improve engineering productivity, accelerate delivery, and enhance software quality while applying sound engineering judgement and responsible AI practices.

What You'll Do

Build high-performance, maintainable user interfaces using React (Hooks, Context, Suspense), TypeScript, and modern frontend engineering practices.
Develop responsive, cross-browser compatible applications using modern CSS (Flexbox, Grid), CSS-in-JS or modular CSS, and component libraries such as Material UI or Tailwind CSS, applying AI-enabled engineering approaches where appropriate to improve development efficiency.
Optimise application performance through techniques such as code splitting, memoisation, lazy loading, and frontend performance monitoring.
Develop secure applications using OAuth2, OpenID Connect, and JWT while contributing to quality-driven engineering practices across the software development lifecycle.
Collaborate with backend engineers, designers, and product teams to deliver engaging user experiences, while encouraging the responsible use of approved AI tools and automation to improve collaboration and delivery.

What We're Looking For

Strong proficiency in JavaScript (ES6+) and TypeScript, with hands-on experience building production applications using React 18 or later.
Solid understanding of state management approaches such as Context API, Redux Toolkit, or similar modern frontend patterns.
Experience consuming RESTful APIs, managing asynchronous data, and developing scalable frontend applications with modern tooling such as Vite or Webpack.
Strong knowledge of CSS, including Flexbox, Grid, CSS preprocessors (SASS/LESS), and frontend testing frameworks including Jest, React Testing Library, Cypress, or Playwright.
Passion for user experience, clean code, and using AI-enabled tools responsibly to improve engineering productivity while maintaining appropriate human oversight, accessibility, security, and software quality.

Bonus Points For

Experience working with Vue, Angular, or Next.js in production environments.
Understanding of secure frontend architecture and performance optimisation techniques.
Experience deploying applications through CI/CD pipelines and modern DevOps practices.
Familiarity with design systems, component-driven development, and tools such as Storybook.
Curiosity to explore responsible AI, automation, and emerging frontend technologies to continually improve engineering practices and user experiences.

Why Join Capco

Deliver high-impact technology solutions for Tier 1 financial institutions.
Work in a collaborative, flat, and entrepreneurial consulting culture.
Access continuous learning, training, and industry certifications.
Be part of a team shaping the future of digital financial services.
Help shape the future of digital transformation across Financial Services & Energy.

Benefits

We offer a competitive, people-first benefits package designed to support every aspect of your life:

Core Benefits: Discretionary bonus, competitive pension, health insurance, life insurance and critical illness cover.
Mental Health: Easy access to CareFirst, Unmind, Aviva consultations, and in-house first aiders.
Family-Friendly: Maternity, adoption, shared parental leave, plus paid leave for sickness, pregnancy loss, fertility treatment, menopause, and bereavement.
Family Care: Eight complimentary backup care sessions for emergency childcare or elder care.
Holiday Flexibility: Five weeks of annual leave with the option to buy or sell holiday days based on your needs.
Continuous Learning: Your growth, your way—minimum 40 hours of training annually through workshops, certifications, and e-learning. You'll also be assigned a Business Coach from Day One to support your professional development.
Healthcare Access: Convenient online GP services.
Extra Perks: Wellhub (Gympass), travel insurance, Tastecard, season ticket loans, Cycle to Work, and dental insurance.

Inclusion at Capco

We're committed to making our recruitment process accessible and straightforward for everyone. If you need any adjustments at any stage, just let us know—we'll be happy to help. We value each person's unique perspective and contribution. At Capco, we believe that being yourself is your greatest strength. Our #BeYourselfAtWork culture encourages individuality and collaboration—a mindset that shapes how we work with clients and each other every day.

#LI-DNI

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**Senior Frontend Developer (*React***)

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Why Join Capco

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Inclusion at Capco

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Senior Frontend Developer (React)

The Role

What You'll Do

What We're Looking For

Bonus Points For

Why Join Capco

Benefits

Inclusion at Capco

**Senior Frontend Developer (*React***)