JavaScript Engineer

Job Summary

Seeking an experienced JavaScript Engineer for a full-time remote position, responsible for co-owning the design and development of a client-side SDK that detects and blocks malvertising threats, while optimizing performance and ensuring robust deployment strategies.

Key Responsibilities

• Co-own the design, development, and ongoing maintenance of the client-side JavaScript SDK
• Build and optimize SDK internals for maximum runtime performance and minimal impact on page load
• Translate security threat intelligence into SDK-level detection and blocking logic

Required Qualifications

• Expert-level JavaScript (ES6+) with deep knowledge of browser internals
• Proven experience building and maintaining JavaScript SDKs at production scale
• Strong understanding of JavaScript execution in third-party and sandboxed environments
• Experience with SDK distribution patterns and versioning strategies
• Proficiency with modern JavaScript tooling, including bundlers and testing frameworks