[Hiring] Chrome Sandbox Escape Android - Vulnerability Researcher @Trenchant

Role Description

We are looking for a senior researcher with deep practical experience identifying and exploiting vulnerabilities across Chrome sandbox boundaries on Android. You should already know how to move from a compromised renderer or low-privilege browser process to a meaningful trust-boundary violation. The goal is stable, chainable sandbox-escape capability on real Android targets.

What you’ll work on

• Renderer-accessible Mojo interfaces, interface brokers and browser-process endpoints.
• GPU, media, network, utility, device and other services reachable from low-privilege Chrome processes.
• Android-specific Chrome integration, including platform bridges, Binder-facing components, permissions and service boundaries.
• Confused-deputy conditions, validation gaps, unsafe deserialisation, lifetime errors, races and state-machine mistakes.
• Cross-process exploitation where asynchronous IPC, handles, shared memory or capability transfer affect reliability.
• End-to-end chains with renderer and Android-kernel researchers when needed.

What you’ll deliver

• Original vulnerabilities that cross a Chrome process, privilege or trust boundary on Android.
• Reliable sandbox-escape exploit components that work under production mitigations.
• Prioritised attack-surface areas that are deemed to be complex enough to contain vulnerabilities.
• Triggers, PoCs, exploitability analysis, target assumptions and complete technical handover.
• Reusable tooling for IPC discovery, Mojo message generation, tracing, instrumentation, coverage and variant analysis.

Qualifications

• Demonstrable delivery of Chrome/Chromium sandbox escapes, browser-process vulnerabilities or closely comparable cross-privilege exploitation.
• Deep knowledge of Chromium’s multi-process architecture, sandbox policy and renderer-to-browser trust boundaries.
• Strong practical experience with Mojo IPC, bindings, data pipes, shared memory, interface ownership and message validation.
• Advanced C++ vulnerability-research and exploitation skills in complex multi-process targets.
• Working knowledge of Android internals relevant to Chrome, including application isolation, SELinux domains, Binder and platform services.
• The ability to turn a subtle boundary mistake into a stable result that can be integrated into a wider chain.
• Independent research ownership and a consistent history of finishing high-difficulty work.

Strong signals

• Credited Chrome sandbox escapes or comparable real-world cross-privilege exploit delivery.
• Custom Mojo fuzzers, IPC introspection tools or Chrome instrumentation frameworks.
• Experience chaining renderer compromise through sandbox escape to Android system or kernel impact.
• Research across multiple Android OEMs, chipsets and Chrome branches.
• Vulnerabilities found made it to stable/beta releases.
• Strong patch-analysis and variant-hunting results.

How we work

• Fully remote, with high autonomy and close collaboration between browser, platform and kernel specialists.
• We measure progress through technically meaningful, reproducible delivery.
• Public CVEs are not a requirement.