Griffin Yianakopolos

Director, Product Management

Lead six PMs across search, consumer communications, and Shopping AI, partnering with approximately 53 engineers.

• Defined Zillow's Shopping strategy across search, home details, and communications; aligned teams on experience quality and personalization, with daily active users as a shared success metric.
• Led a cross-functional audit of Zillow AI mode search use cases; defining LLM response and tool-use requirements to guide evaluations and prioritize release blockers with partner teams.
• Reorganizing Zillow Search into two cross-platform pods, each with distinct OKRs and a full cross-functional team spanning product, design, data science, and engineering, to enable faster, more autonomous decisions.
• Implementing an AI-native operating model through Codex and Claude Code training and a shared context repository that teams and agents use to support aligned, autonomous execution.
• Improved leadership decision-making and team accountability by reinventing Zillow’s core Monthly Business Review around input metrics and progress against goals; built AI tooling and partnered with data science to automate preparation.

Senior Manager, Product Management

Led four PMs across affordability (BuyAbility and Zillow AI mode), planning, information architecture, app growth, and social impact, partnering with approximately 26 engineers.

• Scaled BuyAbility from 0 to 5M+ enrolled users in 2 years through experimentation across discovery, save, and enrollment, increasing monthly enrollments by 166%; enrolled users converted to pre-qualification at 10x the rate of non-enrolled users.
• Led delivery of BuyAbility in Zillow’s ChatGPT app in six weeks for OpenAI’s inaugural apps launch (Oct. 2025); defined UX, MCP tool behavior, and app-wide metrics and instrumentation.
• Partnered with data science on an ML propensity model that improved loan-funding prediction by 35% and targeting accuracy across multiple lines of business.
• Led the Experian partnership and credit-verification integration for BuyAbility, targeting 1M verified users; the pricing it secured let Zillow Home Loans consolidate its pre-qualification credit data at a material monthly saving.
• Defined the vision and led the cross-platform launch of Zillow’s Plan Tab, a unified planning experience for buyers, sellers, and renters; shaped the C-suite investment pitch and refocused team goals on user activation.

Principal Product Manager

• Invented and launched BuyAbility, a real-time personalized affordability product, from concept to iOS/Android launch in 2.5 months; recognized internally as one of Zillow's most significant innovations since the Zestimate (patent pending).
• Invented Zillow’s centralized affordability calculation service, defined its logic and product requirements, and shipped the MVP in 3 months; the service now supports BuyAbility, AI mode, search, home details, and payment experiences.
• Drove cross-org execution post-MVP: secured roadmap commitments from 12+ teams, funding for +10 engineers and +1 PM, and alignment across 30+ partner engineers to deliver a cohesive multi-surface experience.

Senior Product Manager (Lead)

• Built Fire TV Channels app from scratch, a free ad-supported streaming service on Fire TV, scaling to 3M+ customers and 5M hours streamed (as of May 2023), unlocking a large incremental video advertising revenue stream.
• Led a 50+ person cross-functional team to launch and scale Fire TV Channels, defining the roadmap, aligning senior leadership on resourcing, and delivering multiple releases that achieved 4.1/5 CSAT in beta.
• Collaborated with Marketing, BD, and PR to drive adoption of new launches via on-device marketing and press coverage in high-profile publications (The Verge, TechCrunch).

Senior Product Manager

• Launched targeted notification system reaching 2M+ users for engagement and reactivation; shipped Alexa's first-run voice tutorial to increase active days and reduce lapse.

Senior Financial Analyst & Financial Analyst I/II

• Finance owner of $400M Devices Display Advertising business, responsible for all planning, modeling, and reporting.

B.A.