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WitnessAI

Sr. Software Engineer - Javascript

Posted 3 Days Ago
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In-Office
7 Locations
Senior level
In-Office
7 Locations
Senior level
Design and implement robust JavaScript solutions, develop browser extensions, debug DOM interactions, and write documentation to ensure code quality.
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Job Title: Sr. Javascript Engineer

Location: Bay Area/Atlanta - Hybrid

About Us:
At WitnessAI, we're at the intersection of innovation and security in AI. We're looking for a talented Javascript Engineer to help build and maintain our core traffic engineering platform. If you’re passionate about development and enjoy working on high-performance, scalable systems, we’d love to have you on our team.

Responsibilities

  • Design and implement robust JavaScript solutions for interacting with 3rd party web application data.

  • Develop browser extensions or scripts for real-time data analysis.

  • Create maintainable and scalable code that can adapt to website changes.

  • Debug complex DOM interactions and event propagation.

  • Implement data transformation and modification capabilities.

  • Write comprehensive documentation and maintain code quality.

  • Develop tests for existing code to catch bugs and ensure the software is secure and stable.

Requirements

  • Either a bachelor’s degree in a technical field involving coding (e.g., computer science, engineering, information technology) or equivalent technical experience

  • 5-8 years of advanced JavaScript programming.

  • Deep understanding of DOM internals including traversal and manipulation.

  • Expert knowledge of event handling and propagation.

  • Experience with modern web frameworks (React/Angular/Vue/Preact etc).

  • 2+ years of browser extension or web scraping/data extraction experience with strong understanding of browser internals.

  • Proven track record of complex web application development.

  • Experience leveraging LLMs for automation is a major plus.

  • Familiarity with common programming best practices, data patterns, and software design structures.

Benefits:

  • Hybrid work environment

  • Competitive salary.

  • Health, dental, and vision insurance.

  • 401(k) plan.

  • Opportunities for professional development and growth.

  • Generous vacation policy.

Salary range:

$135,000-$188,000 (Bay Area)

Top Skills

Angular
JavaScript
Preact
React
Vue

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