Who can apply: US-based role. The employer has not said which states are eligible — confirm before applying.
Location as listed by the employer: “US, Remote”
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About this role
Horizon3Ai is hiring for a Senior Software Engineer, Browser Automation role (full-time). See the official posting for full details.
Requirements
- Experience building production software, with deep, hands-on experience in browser automation (Playwright, Puppeteer, or Selenium) against real, non-trivial web applications.
- Strong TypeScript / Node.js skills and comfort living inside the headless-browser stack, including Chromium internals, the Chrome DevTools Protocol, network interception, the DOM, and JS execution contexts.
- A track record of taming flaky, stateful, JavaScript-heavy apps. You've fought SPA timing, authentication, and anti-automation defenses and won.
- Solid instincts for distributed/concurrent systems: queues, backpressure, retries, idempotency, and running many browser sessions reliably at scale.
- A bias toward determinism and debuggability, and the judgment to reach for an LLM only when a deterministic approach genuinely can't do the job.
- Ownership mentality: you are comfortable taking a critical subsystem from "works" to "works unattended, at scale, against someone else's production environment."
Summarized from the employer's posting — check the full posting for every requirement.
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