Front End Developer - 36360139

Duration: 6 months to start

Location: Hybrid (Downtown Toronto - 3 days a week)

Duties:

• Develop and maintain frontend components to enable secure and scalable third-party integrations.
• Implement cross-context communication strategies (e.g., iframes, postMessage API, Web Workers, Electron).
• Utilize advanced React.js features (hooks, context API, state management libraries like Redux or Zustand) to build performant user interfaces.
• Identify and resolve performance bottlenecks using profiling tools, Lighthouse, and Web Vitals.
• Debug and troubleshoot complex client-side issues across multiple browsers using developer tools, network analysis, and source maps.
• Collaborate with engineers and product stakeholders to deliver high-quality integration solutions.

Skills:.

• 5+ years of professional frontend development experience, including 3+ years with React.js.
• Advanced proficiency in JavaScript (ES6+) and TypeScript.
• Strong expertise in React.js and ecosystem tooling (hooks, context API, Redux/Zustand, performance optimization techniques).
• Experience designing cross-context communication patterns (iframes, postMessage API, Web Workers).
• Hands-on experience with Webpack and Rollup, including micro-frontend techniques such as module federation.
• Proven ability to diagnose and fix web performance issues using profiling and auditing tools.
• Strong debugging and troubleshooting skills across major browsers.
• Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.