Senior Software Development Engineer in Test (SDET) - Benchmarking
Core
Own automated performance monitoring and benchmarking harness for browser autofill, measuring experience impact, responsiveness, and predictability across mutating web pages.
Role type
Senior SDET (Performance Engineering & Benchmarking)
Builds
Automated regression suite and benchmarking infrastructure for autofill quality
Domain
Browser security, autofill technology, performance engineering
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
Test automation architecture, browser performance internals (Long Tasks, User Timing), Playwright, Chrome DevTools Protocol, statistical analysis, time-series data modeling, TypeScript, observability tooling (Datadog)
Preferred skills
Browser extension architecture, open source passion
Responsibilities
Design benchmark scenarios for complex web pages, build test instrumentation using browser performance APIs, own statistical models for regression detection, interpret engine counters, design event-record schemas, publish results to Datadog, localize regressions to merge commits, maintain scenario library documentation
Seniority
Senior, hands-on IC
