Senior Software Engineer (Front-End)
Posted: 06/30/2026
Job Number: a1dFUXBYRHdsdG40NlV3cGRCQllhZz09
Pay Rate: 62-65 Hourly USD
Job Description
Position Details
We welcome candidates with all U.S. work authorization types, provided they are legally authorized to work in the United States.
Key Responsibilities
We are committed to fostering an inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by applicable law.
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Title: Senior Software Engineer (Front-End)
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Location: Los Angeles, CA
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Duration: Contract
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Work Mode: Onsite
We welcome candidates with all U.S. work authorization types, provided they are legally authorized to work in the United States.
Key Responsibilities
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Design, develop, and maintain high-performance front-end applications using React 18 and TypeScript.
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Build scalable, predictable application state management using Redux and Redux Toolkit (RTK).
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Develop modern Single Page Applications (SPAs) with React Router for client-side routing.
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Identify, analyze, and resolve front-end performance bottlenecks related to rendering, memory usage, application startup, and browser performance.
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Debug and mitigate JavaScript memory leaks in long-running applications.
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Optimize application performance through profiling, monitoring, and performance tuning techniques.
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Collaborate with product managers, designers, QA engineers, and backend developers to deliver high-quality streaming applications.
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Participate in code reviews, technical discussions, and architecture decisions while following engineering best practices.
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Develop and execute unit and end-to-end tests using Vitest and Playwright.
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Continuously improve application stability, maintainability, scalability, and user experience across multiple devices.
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Strong hands-on experience with React 18, TypeScript, JavaScript (ES6+), HTML5, and CSS3.
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Expertise in Redux and Redux Toolkit (RTK) for application state management.
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Experience with React Router and modern client-side routing techniques.
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Strong understanding of browser rendering, DOM, JavaScript execution, and front-end performance optimization.
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Experience profiling applications, identifying performance bottlenecks, and resolving rendering and memory issues.
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Hands-on experience debugging JavaScript memory leaks and optimizing large-scale Single Page Applications (SPAs).
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Familiarity with testing frameworks such as Vitest and Playwright.
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Experience working in Agile development environments using Git-based version control.
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Strong analytical, troubleshooting, communication, and collaboration skills.
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Experience developing high-performance streaming, media, or OTT applications.
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Knowledge of browser internals, rendering pipelines, and application startup optimization.
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Experience with performance monitoring and profiling tools.
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Familiarity with AWS API Gateway and integrating frontend applications with cloud-based APIs.
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Experience working with cross-functional engineering teams delivering enterprise-scale web applications.
We are committed to fostering an inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by applicable law.
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