Open to opportunities

Sarah Park

@sarahpark

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Senior Quality Assurance Engineer driving reliability and automation across web, mobile, firmware.

United States

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What I'm looking for

I seek roles owning end-to-end quality for product-led teams, focusing on automation, CI/CD efficiency, cross-functional collaboration, and measurable defect reduction.

I am a Senior Quality Assurance Engineer with 8+ years ensuring quality, reliability, and safety across web, mobile, backend, API, and firmware applications in agile, product-driven environments. I own end-to-end testing for complex products, lead root-cause analysis and post-release reviews, and define quality KPIs for Director and VP stakeholders to inform go/no-go decisions.

I have proven success improving CI/CD efficiency by automating regression tests (reducing manual testing time by 35%), preventing recurring critical defects, and coordinating cross-functional teams to meet release timelines for large-scale SaaS and device fleets. I bring strong hands-on skills in Python-based automation, API and SQL validation, Linux/CLI debugging, and observability tooling to drive measurable product quality improvements.

Experience

Work history, roles, and key accomplishments

Current

Senior Quality Assurance Engineer

Current

Samsara, Inc.

Apr 2019 - Present (6 years 9 months)

Owned end-to-end testing and quality validation for firmware and full‑stack products used by over 1M devices, reducing manual testing time 35% via automation and preventing ~2 critical issues per release through root cause analysis.

Manual Testing Python SQL CI CD Datadog TestRail

Support Engineer

Mixpanel

May 2017 - Apr 2019 (1 year 11 months)

Provided customer troubleshooting and education for Mixpanel reporting and implementations, documented bugs and collaborated with engineering to improve product quality and internal processes.

Customer Support Troubleshooting Bug Reporting Implementation Technical Documentation