Senior Software Engineer - Javascript/Typescript

📋 Description

• Build and maintain our browser-side TS/JS agent for device ID, bot detection, and risk.
• Engineer for stealth, resilience, and performance; minimize footprint.
• Optimize code size and speed in adversarial environments.
• Stay ahead of browser changes, plugins, and fingerprinting techniques.
• Collaborate with backend, security, and data science on signal capture for detection.
• Write tests and contribute to CI pipelines across platforms and devices.

🎯 Requirements

• 3-5 years of JavaScript and TypeScript, especially in browser environments.
• Deep understanding of browser APIs, DOM, timing attacks, and anti-debugging.
• Experience building libraries or SDKs for production or developer-facing use.
• Strong frontend focus with backend familiarity.
• Proficiency with build tools: Vite, Webpack, Rollup, Esbuild.
• Experience with modern testing frameworks: Vitest, Jasmine, Jest.
• Familiarity with security principles, privacy best practices, and adversarial engineering.
• Clear written and verbal English communication.

🎁 Benefits

• 100% remote company with a globally distributed team.
• Opportunity to contribute to widely-used open-source projects.
• Autonomy, ownership, and a fast-paced engineering culture.
• Inclusive, diverse workplace focused on growth and learning.
• No visa sponsorship; applicants must be authorized to work from home location.