Frontend Engineer - AI-Driven Data Dashboards

Oscar Technology; Greater London; On-site; GBP 85,000 - 105,000; Full time

Job summary

Oscar Associates (UK) Limited is recruiting a Front‑End Engineer for our London core team. You’ll work in React, TypeScript and React Native on data‑dense enterprise surfaces and AI‑assisted workflows.

Based in Kings Cross, London, the role is on-site three days a week with visa restrictions not available. You’ll contribute to a shared component library, ship high‑quality interfaces and maintain strong testing and accessibility standards.

Qualifications

• 5+ years in front-end engineering with React and TypeScript.
• Experience shipping data-dense enterprise interfaces.
• Strong state management and front-end security knowledge.
• Proven testing discipline with modern tooling.
• Experience building SaaS or multi-tenant products.
• Daily use of AI coding tools.

Responsibilities

• Build advanced forms, analytics dashboards, real-time updates and rich document views in React and React Native with TypeScript.
• Make dense data usable through grid components such as AG Grid or MUI DataGrid, virtualisation and CSS Grid/Flexbox layouts that hold at scale.
• Implement streaming responses, citations, verification affordances and safe failure states.
• Make approvals, hand-offs, tool calls and partial progress visible in agent workflows, and let users interrupt or correct a run.
• Work on perceived performance so model calls taking seconds still feel responsive.
• Contribute to the component library and tenant theming, keeping branding, permissions and configuration clean.
• Integrate back-end APIs with authentication, role-based access, tenant context and useful client-side error handling.
• Maintain unit, integration and end-to-end tests with Jest, React Testing Library and Cypress or Playwright.
• Meet WCAG 2.1 accessibility standards.
• Profile and optimise code splitting, lazy loading, memorisation and bundles through Jenkins and SonarQube pipelines to AWS.

Skills

React

TypeScript

Frontend architecture

Testing

Security (XSS/CSRF/CSP)

CI/CD

AI coding tools

Multi-tenant SaaS

Data-dense interfaces

Education

Engineering/CS degree or equivalent

Tools

Jest

React Testing Library

Cypress

Playwright

Git

AWS

Module Federation

Job description

Oscar Associates (UK) Limited is recruiting a Front‑End Engineer for our London core team. You’ll work in React, TypeScript and React Native on data‑dense enterprise surfaces and AI‑assisted workflows.

Based in Kings Cross, London, the role is on-site three days a week with visa restrictions not available. You’ll contribute to a shared component library, ship high‑quality interfaces and maintain strong testing and accessibility standards.