Senior Front-End Software Engineer

Role: Senior Front-End Software Engineer


Location: Contract


Type: Contract


Mandatory Skills : React 18 and TypeScript, Redux, RTK

Job description


We're looking for a Senior Front-End Software Engineer to help build and optimize a streaming application used across various devices, most notably Smart TVs. This role is ideal for someone who cares deeply about performance and knows how to keep complex applications fast and stable on resource-constrained devices.


What You'll Do:

• Build and maintain front-end features using React 18 and TypeScript
• Develop predictable and maintainable state management using Redux and Redux Toolkit (RTK)
• Identify, measure, and resolve performance bottlenecks related to rendering, memory usage, and application startup
• Debug and mitigate JavaScript memory leaks in long-running applications

Required Qualifications:

• Strong experience with React and TypeScript
• Experience managing application state with Redux and RTK
• Familiarity with client-side routing patterns using React Router
• Solid understanding of front-end fundamentals (HTML, CSS, modern JavaScript)
• Experience with performance optimization - debugging, measurement, and implementation (e.g., profiling, monitoring, or performance tooling)
• Understanding of browser internals, rendering behavior, or performance bottlenecks in large SPAs
• Ability to work collaboratively in a cross-functional team

For tech stack, this is what they currently use so understanding of these would be good:

• React 18.2.0 & TypeScript 5.9.2
• State Mgmt.: Redux, RTK
• Routing: React Router
• Testing: Vitest, Playwright (familiarity is fine)
• Preferred: Someone who has experience in app performance, measuring it, looking into things like debugging JS memory leaks.