Senior UI Platform Engineer – React/TypeScript Foundations

Jain Global; City Of London; On-site; GBP 120,000 - 155,000; Full time

Job summary

Jain Global in London seeks a Senior UI Platform Engineer to build reusable frontend foundations and maintain shared React/TypeScript packages, components, and tooling.

You will create starter templates, define standards for structure, testing, deployment, and supportability, and partner with other teams on authentication, observability, and frontend/backend integration patterns. This is a platform engineering role spanning teams and regions.

Qualifications

• Strong professional experience with React and TypeScript.
• Strong understanding of modern frontend architecture and application structure.
• Experience building reusable UI components, shared packages, or internal developer tooling.
• Experience with routing, state/data-fetching, and API integration in web applications.
• Experience with enterprise authentication and authorization patterns.
• Strong understanding of testing, build tooling, and frontend developer workflows.
• Strong communication skills and practical engineering judgment.

Responsibilities

• Build reusable frontend foundations for internal web applications.
• Develop and maintain shared React/TypeScript packages, components, and tooling.
• Create and improve starter templates, application scaffolding, and developer workflows.
• Help define standards for application structure, testing, deployment, and supportability.
• Partner with other engineering teams on shared concerns such as authentication, authorization, observability, and frontend/backend integration patterns.
• Contribute to internal platform applications such as onboarding, access administration, and service discovery experiences.
• Evaluate and maintain third-party frontend dependencies and shared UI tooling.
• Support adoption through documentation, examples, and direct collaboration with developers across technology and investment teams.

Skills

React

TypeScript

Frontend architecture

Reusable UI components

Routing

Testing

Communication

Tools

Vite

Next.js

UI libraries

Job description

Jain Global in London seeks a Senior UI Platform Engineer to build reusable frontend foundations and maintain shared React/TypeScript packages, components, and tooling.

You will create starter templates, define standards for structure, testing, deployment, and supportability, and partner with other teams on authentication, observability, and frontend/backend integration patterns. This is a platform engineering role spanning teams and regions.