Avatar

Daniel Galbraith

Product Manager

Google

Biography

I’m an AI/ML PM at Google, working to protect the Google Ads ecosystem from ad fraud and bad actors. Right now, I’m a PM rotator in Ad Traffic Quality. My work in Ads Safety focused on driving efforts to protect users and publishers from harmful content through better classification. Before that I worked on voice assistant research and development, including Siri and Alexa.

For 4 years as an AI/ML data ops and technical program lead at Google, I drove the execution of AI/ML programs for ads safety and policy, bridging the gap between product strategy, data science and engineering. I’ve led large-scale, multi-year operational migrations across organizations, pioneered new LLM and human data labeling strategies, and delivered significant business improvements (e.g. +$119M ARR model launch, -20% annual opex savings). I have extensive experience driving ML initiatives end-to-end from conception to launch.

I’m excited about emerging tech in the AI/ML space, and applying deep technical expertise to build useful products, particularly in the areas of digital ads and human language technology. I graduated from Stanford with a PhD in Linguistics (2018), and authored the book Optimal Linking Grammar (Cambridge University Press, 2023).

Areas of expertise:

Product & program leadership:

  • Product strategy & vision for AI/ML systems
  • Technical program management & cross-functional execution
  • Stakeholder management & communications
  • Roadmap development & planning

AI/ML expertise:

  • LLM strategy (data generation, labeling and evaluation)
  • NLP (ASR, TTS, NLU) and Human Language Technology
  • Machine Learning & Deep Learning (classification models, prototyping)

Data science & analytics:

  • Experimental design, A/B testing
  • Evaluation metrics, KPIs, hypothesis testing
  • Statistical analysis, data modeling

Technical proficiencies:

  • Python, R, SQL (for data analysis & research)
  • Git, Unix

Education

  • PhD in Linguistics, 2018

    Stanford University

  • MPhil in Linguistics, 2013

    University of Cambridge

  • BA in Modern & Medieval Languages, 2012

    University of Cambridge

Experience

 
 
 
 
 

Product Manager (Rotator)

Google

Oct 2025 – Present Mountain View, CA
PM rotation in Ad Traffic Quality.
 
 
 
 
 

Senior Technical Program Lead, AI/ML

Google

May 2025 – Present Mountain View, CA
Promoted to L5 IC (May 2025)

  • Launched a new user harm metric pipeline, providing key product insights by sizing the footprint of ~10B high-risk impressions across ~1.7T monthly ads.
  • Enhanced advertiser transparency by negotiating cross-org delivery of key improvements to customer-facing help center and internal enforcement guidelines for 14 policies covering 3 premium surfaces.
  • De-risked a complex infrastructure migration for a core advertiser notifications & appeals system, driving clarity across multiple engineering teams to safeguard delivery.
 
 
 
 
 

Technical Program & Data Ops Lead, AI/ML

Google

Jul 2021 – May 2025 Mountain View, CA

Ads Safety ML

  • Orchestrated a large-scale operational migration for ML products across 5 organizations and 3 product areas. Owned the execution plan, managed cross-org dependencies, and mitigated project risks to ensure the seamless transfer of a $15M operation responsible for 73M data labels annually.
  • Delivered +$119M ARR by driving the execution of new LLM and human data pipelines for YouTube ad classification models, which improved model precision by 12% and reduced harmful ad content by 13%.
  • Drove -20% in annual operational savings by conducting deep-dive analysis of ML data pipelines, identifying key inefficiencies, and partnering with PM & Eng to execute the new optimized strategy.
  • Pioneered a new LLM labeling strategy to solve critical roadblocks in ad classification. Led the program from prototype to the successful delivery of a high-quality dataset of >800K examples, enabling next-gen model development.

Scopes:

  • 2024-2025: TPM for content-based ads policy on Google O&O surfaces.
  • 2023-2024: ML Data Strategy & Ops for NextGen modeling (LLM & production models).
  • 2021-2023: ML Data Eng, Ops & Analysis for publisher controls (brand & user safety).
 
 
 
 
 

Research Scientist

Amazon Lab126

May 2020 – Jul 2021 Sunnyvale, CA
Research and development of NLP for Alexa for Halo (fitness band).
 
 
 
 
 

NLP Scientist

Mosaix

Nov 2018 – Apr 2020 Palo Alto, CA
Research and development of NLU engine for multi-language voice assistance.
 
 
 
 
 

Computational Linguist

Apple (via Welocalize)

Jul 2018 – Oct 2018 Cupertino, CA
Write daily patches & software updates for Siri speech recognition and text-to-speech.
 
 
 
 
 

Graduate Research Assistant & Teaching Assistant

Stanford University

Sep 2013 – Jul 2018 Stanford, CA
Linguistics research on syntax and metrical phonology with advisor Paul Kiparsky.

Posts

Better Linguistics for Better Voice Assistance

How we use linguistics to advance multilingual NLU.

What Faroese ballads and US presidential speeches have in common

Rhythm — or for linguists, a testing ground for phonological theory.

All Publications

(2023). Optimal Linking Grammar: A Theory of Morphosyntax. Cambridge Studies in Linguistics (vol. 170). Cambridge University Press.

PDF DOI

(2018). The Predictable Case of Faroese. PhD thesis, Stanford University.

PDF

(2018). Sentence stress in presidential speeches. Prosody in Syntactic Encoding, Linguistische Arbeiten 573, ed. Gerrit Kentner and Joost Kremers.

PDF

(2016). A constraint-based account of Faroese ballad meter. NordMetrik: Versification, Metrics in Practice. University of Helsinki, 5/25/16-5/27/16.

PDF

(2013). Positional and Morphological Case in Faroese. Master’s thesis, University of Cambridge.

Certification

Data Scientist with Python

See certificate

Contact

  • 1600 Amphitheatre Pkwy, Mountain View, CA, 94043, United States