Machine Learning & Evaluation Engineer - Apple
(2022-01 - 2023-12)
Siri Web Answers and Ranking
- Diagnosed, refactored, and strengthened core ranking, indexing, and evaluation libraries, optimizing evaluation correctness, benchmark accuracy, and release safety.
- Designed and shipped an automated user-log data processing pipeline in Python and C++ to scale query evaluation datasets, optimizing retrieval efficiency and text-matching metrics.
Software Engineer, Tech Lead - Google
(2019-01 - 2022-12)
Systems Validation & Compliance, Ads Integrity Targeting
- Partnered with cross-functional policy and review teams to translate strict safety regulations into programmatic backend constraints, blocking policy violations across Search and Display channels.
- Built and optimized a TensorFlow-based text and signal classifier that scaled automated data validation and automated review workflows, accelerating ground-truth quality checks.
Software Engineer - Google
(2017-01 - 2019-12)
Quality Infrastructure, Ads Quality, Ads Measurement and Attribution
- Built robust quality infrastructure for geo-ads spend-experiment optimization, running data analysis and data validation workflows across 20 countries to ensure metric alignment.
- Designed and launched a dynamic geo-marketing-areas system and datastore to optimize retrieval accuracy and grounding metrics for Search Ads.
Software Engineer - Google
(2016-01 - 2016-12)
Infrastructure & Data Quality, Display Ads Infrastructure
- Applied predictive machine learning models to classify web content, reducing structural processing noise and establishing automation to safeguard scraping and indexing pipeline efficiency.
- Executed retrieval and text experiments utilizing salient-synonym extraction to systematically benchmark ad targeting relevance.
Software Engineer - Google
(2013-01 - 2015-12)
Search Quality & Content Evaluation, Google Now
- Developed a higher-precision and higher-recall evaluation algorithm to measure the faithfulness and accuracy of user-routine pattern predictions triggering automated contextual actions.
- Built data processing pipelines for personalized handling and semantic evaluation of sensitive localized user query strings.
Software Engineer - Google
(2006-01 - 2012-12)
WebSearch Ranking Evaluation & Localization
- Designed and built a next-generation side-by-side (SxS) ranking evaluation platform that operated 5x faster than its predecessor, optimizing core logic and text evaluation workflows to reduce latency.
- Designed a metro-query synonym framework to optimize local-results ranking accuracy, executing validation cycles across four consecutive production launches.
- Shipped NLP-driven transliteration synonyms for diverse global query streams, ensuring linguistic precision and text matching across complex international traffic.
- Expanded international query language detection capabilities from 30 to over 80 languages, building evaluation templates to verify accuracy across 250 global search interfaces.
- Authored a comprehensive error-diagnostic action template to benchmark global search results quality against external competitors; coordinated 20+ engineers to debug features over an evaluation golden set of 1,000+ random queries.
