Staff / Senior Software Engineer (Agentic Search) - Web Access Engineer (AI)

TL;DR

Staff / Senior Software Engineer (Web Access/AI): Building the web access infrastructure for an agent-native search platform designed for AI systems with an accent on browser internals and internet-scale web content retrieval. Focus on analyzing website-browser communication, overcoming fingerprinting, and creating high-performance browser instrumentation tools.

Location: Berlin, Germany; Estonia; Israel; Poland; Prague, Czech Republic. Applicants must be authorized to work in the country in which they apply.

Company

Nebius is a full-stack AI cloud platform provider focused on GPU orchestration, inference optimization, and infrastructure for the global AI economy.

What you will do

• Research and analyze the complete request lifecycle of modern website-browser communication.
• Build browser infrastructure and tooling that enables reliable, efficient access to web content at internet scale.
• Investigate browser fingerprinting, client verification mechanisms, and modern web technologies.
• Develop tooling for browser instrumentation, debugging, and large-scale experimentation.
• Translate technical research into robust production systems.

Requirements

• 5+ years of experience in production backend or infrastructure systems.
• Expertise in Chromium architecture, browser internals, and the Chrome DevTools Protocol (CDP).
• Proficiency with browser automation frameworks such as Playwright, Puppeteer, or Selenium.
• Deep knowledge of web platforms, including HTTP/1.1, 2, 3, TLS, DNS, and browser networking.
• Experience with JavaScript execution, modern client-side rendering, and browser fingerprinting concepts.
• Work authorization for Germany, Estonia, Israel, Poland, or the Czech Republic.

Nice to have

• Experience developing browser engines or browser infrastructure.
• Expertise in reverse engineering browser or web application behavior.
• Background in building internet-scale distributed systems.
• Proficiency in Go, C++, Rust, or Python.
• Experience with Kubernetes and cloud infrastructure.

Culture & Benefits

• Competitive compensation package.
• Career growth and continuous learning opportunities.
• High degree of flexibility and ownership within the role.
• Collaborative, innovative culture in an international environment.
• Opportunity to work on impactful projects shaping the future of AI.