Alan Si
Product & Growth @ Perplexity
About
Canadian data scientist turned product person in Silicon Valley. Core competencies in analytics, applied machine learning, experimentation, product innovation, strategy, and UX design. Specialized expertise leading cross-functional growth teams (acquisition, conversion, activation, retention, resurrection, subscriptions) and AI/ML teams (generative AI, post-training, personalization, ranking, recommender systems, responsibility / safety).
United States
San Francisco Bay Area
Internet
Large Language Models (LLM), Product Management, Machine Learning, Leadership, Recommender Systems, Data Analysis, Deep Learning, Artificial Intelligence, Strategy, Financial Modeling, Research, Python, Data Mining, Statistics, Strategic Planning, Cloud Computing, Digital Strategy, SEO, SEM, CAD/CAM
Experience

Head of Growth - Product
Menlo Park, California, United States
Early PM hire, helped scale the cross-functional Growth team and oversaw MAU growth from 10M to 20M+. Led efforts across acquisition, activation, retention, & TAM expansion (new use cases) — DRI for monetization efforts, increased revenue from paid subscriptions (c.ai+) to over $X0M ARR
Product Manager, Community & Discovery
San Francisco Bay Area
Led multiple cross-functional teams in YouTube’s Emerging Experiences & Community (EMCO) product area — worked on consumer experience, content quality, discovery, ranking, & safety for YouTube’s emerging content formats
Senior Data Scientist, Growth
Menlo Park, CA
Re-accelerated User growth (2x MAU to >1B in less than 2 years) by driving product changes through novel social network analysis, product analytics, experimentation (incl. network effects), machine learning, and advanced statistical modeling. Led overall social network analytics across the Instagram social graph and designed the underlying algorithms behind Instagram’s User recommender systems, business recommendation engines, and interest ranking.

Data Scientist, Applied Machine Learning
Menlo Park, CA
As a member of Facebook’s core Applied Machine Learning (AML) team, worked on applied research for next generation artificial intelligence (AI) and applications for state-of-the art machine learning: bots/assistants, computer vision, deep learning, facial recognition, natural language processing (NLP), video transcription, translation etc. Led data science work on consumer hardware devices from Building 8, automatic speech recognition (ASR), language models, text-to-speech (TTS), voice interfaces, and development of AI tools to combat foreign election interference.

Data Engineer
San Francisco Bay Area
Architected v2 of core analytical data infrastructure, built on top of raw medical/pharmaceutical claims, insurance data, and application logs, which led to a 12x gain in warehouse efficiency. Developed prototypes for new predictive healthcare analytics product (“Castlight Action”) that delivered advanced detection of high risk pregnancies, diabetes, and back pain for early intervention and medical savings.

Quantitative Analyst (Paid Marketing)
Toronto, Canada Area
Developed quantitative analyses, automated campaign optimization reporting, marketing mix / attribution models, and recommendations on marketing strategy through data-driven analytics for C-Level executives of top Fortune 500 Brands in the Automotive, CPG, Healthcare, Pharmaceutical, and QSR verticals. Brands worked on include: Acura, Benylin, Botox, Honda, KFC, Lindt, Pizza Hut, Philip Morris, & Tylenol
Education
Alan Si's Contact Information
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