Senior Front end Developer (React/TS) - SaaS Company

Stack

Responsibilities

• ▹Design and implement scalable frontend architecture used across multiple applications
• ▹Build reusable platform capabilities for authentication, networking, routing, state management, and error handling
• ▹Improve application performance through profiling, code splitting, lazy loading, bundle optimization, and rendering optimizations
• ▹Design resilient frontend systems handling authentication flows, session management, token refresh, offline behavior, retries, and request cancellation
• ▹Build maintainable API communication layers, request interceptors, caching strategies, and error handling patterns
• ▹Improve frontend observability through logging, monitoring, Real User Monitoring (RUM), and production diagnostics
• ▹Drive testing strategy across unit, integration, and end-to-end testing
• ▹Champion accessibility, performance, scalability, and engineering best practices across the frontend ecosystem
• ▹Participate in architecture reviews, technical design discussions, and modernization initiatives
• ▹Mentor engineers through code reviews and architectural guidance

Requirements

• ▹5+ years of professional Frontend Engineering experience building large-scale React applications
• ▹Expert knowledge of React, TypeScript, and JavaScript (ES6+)

Soft skills

About the company

The client is a leading SaaS company providing business management solutions for service-based businesses across North America, helping professionals manage customer relationships, estimates, projects, invoicing, and payments through web and mobile applications, serving thousands of businesses.