Senior Software Engineer - Web Infrastructure for AI Agents

Tavily; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Tavily in Greater London is seeking a Senior Software Engineer to build the web access infrastructure behind a novel search engine designed for agentic AI. You will study how modern websites communicate with browsers and translate that understanding into production systems operating at internet scale.

You will develop browser instrumentation, debugging tools, observability, and run large-scale experiments using Chromium internals and modern automation frameworks.

Qualifications

• 5+ years of experience as a software engineer with production backend or infrastructure systems.
• Expertise in Chromium architecture and browser internals.
• Strong knowledge of browser lifecycle and navigation.
• Experience with Chrome DevTools Protocol (CDP).
• Proficiency with browser automation frameworks (Playwright, Puppeteer, Selenium).

Responsibilities

• Research how modern websites communicate with browsers across the request lifecycle.
• Investigate browser fingerprinting and client verification mechanisms for reliable web access.
• Build tooling for browser instrumentation, debugging, observability, and large-scale experimentation.
• Translate research into production systems operating at internet scale.

Skills

Chromium architecture

Browser internals

Browser lifecycle

CDP (Chrome DevTools Protocol)

Playwright/Puppeteer/Selenium

Job description

Tavily in Greater London is seeking a Senior Software Engineer to build the web access infrastructure behind a novel search engine designed for agentic AI. You will study how modern websites communicate with browsers and translate that understanding into production systems operating at internet scale.

You will develop browser instrumentation, debugging tools, observability, and run large-scale experiments using Chromium internals and modern automation frameworks.