Senior Engineer II, Chromium

Overview

Senior Software Engineer on the Data Security & AI Engineering team, building and hardening the runtime capabilities behind Menlo's AI security platform, with hands-on Chromium C++ work at the intersection of browser internals, systems architecture and AI security.

What you'll do

• Design, build and maintain Chromium-based browser components in C++ across layers such as content, browser, core, compositor, skia and networking that power Menlo's security and AI-driven capabilities.
• Architect and embed controls for detecting Prompt Injection (PI) and managing Shadow AI activity within browser execution and agent workflows.
• Apply networking fundamentals and HTTP security expertise to harden browser isolation, proxy/gateway intercepts and network-facing infrastructure.
• Partner with the MARS and AI teams to build and integrate AI agent capabilities and MCP (Model Context Protocol) servers into the security platform.
• Use Python or Rust to build supporting tooling, detection microservices and prototypes alongside core C++ systems work.
• Deploy and operate cloud infrastructure (AWS, GCP) and orchestration (Kubernetes, Terraform) needed to run agent/MCP and threat-detection workloads reliably.
• Debug and optimize performance-critical, high-scale systems across the browser and supporting backend infrastructure.
• Collaborate cross-functionally with product, security and AI engineering teams to ship capabilities end-to-end.
• Apply AI-assisted coding tools to accelerate development, testing and code review as part of your daily workflow.

What you'll need

• 5+ years of experience in software engineering with strong C++ systems programming skills.
• Strong networking fundamentals, including solid knowledge of HTTP security, web protocols and/or client-side security architecture.
• Bachelor's degree or higher in Computer Science or a related field (or equivalent practical experience).

Nice to have

• Experience across Chromium layers such as content, browser, core, compositor, skia and networking (or equivalent large-scale, high-performance C++ systems experience).
• Experience or strong interest in AI/LLM security/guardrails domains (e.g., Prompt Injection defense, Shadow AI detection, intent classification, context aware DLP/PII detection and agentic workflows).
• Python or Rust experience.
• Experience building or integrating AI agents, Chrome DevTools Protocol (CDP) and MCP (Model Context Protocol) servers.
• Experience with AWS, GCP, Terraform, Kubernetes and Linux.

Details

• Location: EMEA - Distributed (UK).