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Senior Front End Software Engineer
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Posted on: Oct 21, 2026
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Los Angeles, California
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Onsite
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Full-time
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Job Title :
Senior Front End Software Engineer
Job Type :
Full-Time
Job Location :
Los Angeles California United States
Remote :
No
Job Description :
- We're looking for a Senior Front-End Software Engineer to help build and optimize a streaming application used across various devices.
- 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 behaviour, 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.
Mandatory Skills : React 18 and TypeScript, HTML/HTML5, React, Redux and Redux Toolkit (RTK)
Required Skills :
Basic Qualification :
Additional Skills :
Background Check : No
Drug Screen : No
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Position Details
Posted:
Oct 21, 2026
Reference Number:
1038-509
Employment:
Full-time
City:
Los Angeles
Job Origin:
CIEPAL_ORGANIC_FEED
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