Senior Frontend Engineer (Performance)

Grapevine; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Multi Media, LLC is seeking a Senior Frontend Engineer to join the Viewer team for a high-traffic live streaming platform. You will diagnose and resolve complex frontend performance issues, including memory leaks, rendering bottlenecks, and Core Web Vitals, influencing user experience at global scale.

Ideal candidates bring deep browser internals knowledge, proficiency with modern frameworks, and a track record of performance improvements using real-user data.

Qualifications

• Bachelor's degree in Computer Science or equivalent practical experience.
• Deep expertise in front-end frameworks (React/Angular/Vue/Svelte).
• Expert-level Chrome DevTools, React Profiler and Lighthouse.
• Proven experience improving Core Web Vitals using real-user data.
• Hands-on experience diagnosing memory leaks and optimizing rendering.
• Strong understanding of browser internals and JavaScript execution.

Responsibilities

• Diagnose frontend performance issues on a high-traffic platform.
• Resolve memory leaks and rendering bottlenecks to improve UX.
• Improve Core Web Vitals using real-user data and tooling.
• Collaborate with the Viewer team to optimize performance at global scale.

Skills

Memory leak diagnosis

Rendering optimization

Performance debugging

Education

Bachelor's degree in Computer Science

Tools

React

Angular

Vue

Svelte

Chrome DevTools

React Profiler

Lighthouse

Job description

# Senior Frontend Engineer (Performance)Multi Media, LLCunknown, United StatesPosted 27 Jul 2026Multi Media, LLC is seeking a Senior Frontend Engineer to join the Viewer team for their high-traffic live streaming platform. The role focuses on diagnosing and resolving complex frontend performance issues including memory leaks, rendering bottlenecks, and Core Web Vitals. The ideal candidate possesses deep expertise in browser internals and modern frameworks. This position offers an opportunity to significantly impact user experience at a global scale.Matched by TALApply to this role now. Install TAL for a 24/7 AI agent that keeps finding roles personalised for you.Apply nowInstall TALExperienceExperience not specifiedFunctionEngineeringWork modeRemote, United StatesCompanyTier 2## What you will work onMulti Media, LLC is seeking a Senior Frontend Engineer to join the Viewer team for their high-traffic live streaming platform. The role focuses on diagnosing and resolving complex frontend performance issues including memory leaks, rendering bottlenecks, and Core Web Vitals. The ideal candidate possesses deep expertise in browser internals and modern frameworks. This position offers an opportunity to significantly impact user experience at a global scale.## TAL's takeQuality 65/1005/5 clarityTier 2 companySolid role with clear performance-focused impact and high-traffic scale, though the company tier is mid-range.The JD is extremely crisp, detailing specific performance metrics, tooling, and diagnostic responsibilities.## Must haves* Bachelor's degree in Computer Science or equivalent practical experience* Deep expertise in modern front-end frameworks like React, Angular, Vue, or Svelte* Expert-level proficiency with Chrome DevTools, React Profiler, and Lighthouse* Proven experience improving Core Web Vitals using real-user data* Hands-on experience diagnosing memory leaks and optimizing rendering* Strong understanding of browser internals and JavaScript execution