Senior Software Engineer, Agentic Web Infrastructure

Nebius Group; Zurich (KS); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Competitive compensation

Career growth opportunities

Flexibility and ownership

Collaborative culture

Impactful AI projects

International environment

Job summary

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

You will develop browser tooling, instrumentation, debugging capabilities, and support large-scale experimentation to enable reliable access to web content as part of a scalable AI platform.

Qualifications

• 5+ years of experience as a software engineer on production backend or infrastructure systems.
• Expertise in browser technologies, DOM, and web protocols (HTTP/1.x/2/3).
• Experience with browser automation frameworks (Playwright, Puppeteer, Selenium).
• Familiarity with Chromium architecture and browser internals.
• Knowledge of browser fingerprinting concepts and network stack.

Responsibilities

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

Skills

5+ years software engineering

Backend/infrastructure

Browser automation frameworks

CDP (Chrome DevTools Protocol)

Go/C++/Rust/Python

Tools

Playwright

Puppeteer

Selenium

Chromium

CDP tooling

Kubernetes

Job description

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

You will develop browser tooling, instrumentation, debugging capabilities, and support large-scale experimentation to enable reliable access to web content as part of a scalable AI platform.