Senior Frontend Developer - React

Quantiphi; Bengaluru; On-site; INR 1,200,000 - 1,900,000; Full time

Job summary

Quantiphi in Bengaluru, India, seeks a Senior Front-End Engineer to replace a legacy desktop tool with a robust web app that works offline in customer environments.

The role requires 5+ years of frontend experience, strong React 18+ and TypeScript skills, and the ability to build data-heavy UIs with API integration and accessibility standards. You will collaborate with backend engineers on API contracts and testing.

Qualifications

• 5+ years frontend experience required.
• Experience with React 18+ and TypeScript.
• Experience building data-heavy UIs with API integration.

Responsibilities

• Translate existing desktop workflows into web pages.
• Work with backend engineers on API contracts; write component and end-to-end tests.

Skills

React 18+

TypeScript

Data-heavy UI

API integration

WCAG Accessibility

Jest/RTL

Playwright/Cypress

Education

Bachelor's degree in CS/Engineering

Tools

OpenAPI clients

WebSocket/SSE/SignalR

Testing libraries

Job description

We are seeking a Senior Front-End Engineer to build a web application that replaces a legacy desktop tool. The application must work reliably in customer environments, including those without internet access.

Experience Required: 5+ Years

Must-Have Skills

• React 18+ and TypeScript: Routing, state management, component libraries.
• Data-heavy UI: Virtualized tables, filtering, status dashboards, log viewers.
• API integration: REST with OpenAPI-generated clients; real-time updates (WebSocket/SSE/SignalR).
• Quality: Accessibility (WCAG 2.1 AA), Jest/React Testing Library, Playwright or Cypress.

Good-to-Have Skills

• Converting desktop applications to web; workflow analysis.
• Offline-capable builds with no CDN dependency; design systems; charting (ECharts/D3).

Key Responsibilities

• Translate existing desktop workflows into web pages and build them.
• Work with backend engineers on API contracts; write component and end-to-end tests.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field.
• 5+ years of front-end development; strong communication.