Senior Front-End Developer -- Remote 100% -- Only W2

Role Overview

Senior Front-End Developer (100% Remote, W2) Join Siri Infosolutions Inc to build and maintain a real-time, event-driven front-end application using modern React and TypeScript patterns.

Responsibilities

• Build UI with React using heavy hooks and context providers with strict TypeScript typing and custom interfaces.
• Implement and maintain custom state management solutions, including:
  • understanding update timing (avoid state writes in render)
  • stable-reference patterns for high-frequency data
• Develop real-time features with WebSockets:
  • event merging/deduplication
  • multi-tab sync via BroadcastChannel API
• Create performance-focused graphics using Canvas 2D:
  • draw icons and labels on HTML5 canvas (not DOM)
  • implement hit detection and performance optimization
• Use Material UI v5 (sx prop, theming) and styled-components.
• Integrate with backend services by consuming REST APIs and managing async fetching with React Query.

Requirements

• 7+ years of IT experience.
• TypeScript + React with strict typing, custom interfaces, hooks, and context providers.
• Experience with custom state management (beyond Redux/Zustand).
• Strong understanding of React rendering/update rules.
• Experience building event-driven architectures with WebSockets and real-time updates.
• Canvas 2D rendering experience (performance optimization + hit detection).
• Material UI v5 experience.
• REST API consumption and React Query.

Contract Details

• 6+ months contract on W2
• Remote: 100%
• Location: United States