capco
Principal Frontend Developer - React
At a Glance
- Location
- UK - London
- Posted
- 2026-03-23T09:47:05-04:00
Key Requirements
Required Skills
Domain Knowledge
- Finance
- Regulatory
Benefits & Perks
y Flexibility: 5 weeks of annual leave with the option to buy or sel
ompetitive pension, health insurance, life insurance and critical illness co
Requirements
Strong JavaScript/TypeScript and React expertise; experience with Next.js, Vue.js, or Angular is a plus
Experience with modern CSS techniques (Flexbox, Grid) and frameworks like SASS, Material UI, Bootstrap
Familiarity with OAuth2, JWT, OpenID Connect, and secure frontend design principles
Experience with Redux, Webpack, and modern testing frameworks like Jest, Mocha, or Enzyme
Track record of delivering applications via CI/CD pipelines and containerised environments (Docker/Kubernetes)
Experience mentoring and coaching frontend developers
Compensation & Benefits
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.
Responsibilities
As a Principal Frontend Developer at Capco, you’ll lead the development of scalable and secure web applications for global financial clients using modern JavaScript frameworks, primarily React.
You’ll architect responsive, accessible, and elegant user interfaces and work closely with cross-functional teams to deliver transformative digital experiences.
As a senior technical leader, you’ll mentor others, influence frontend strategy, and drive best practices.
Architect and implement complex frontend systems using React and modern frameworks
Apply UX/UI best practices to deliver pixel-perfect, accessible, and responsive applications
Establish and champion frontend engineering standards across delivery teams