Every day, hundreds of Amazon teams across Retail, Prime, Prime Video, Music, Alexa, and more reach customers through email, push, SMS, and messaging apps. Outbound Communications runs that marketplace, at the scale of hundreds of millions of customers and billions of messages, through everyday sending and Amazon's largest events: Prime Day, Prime Big Deal Days, and the holidays. Each message competes for finite customer attention. The marketplace grows when every message earns more of it: more customers open, click, and buy, and fewer opt out. We're looking for a Principal Product Manager - Technical to lead growth for this marketplace. You'll own click-through rate, conversion, and incremental sales per message across channels, and the technical products that move them: personalization and recommendations in messages, send-time and channel optimization, new creative and interactive experiences, conversational and messaging channels, and the experimentation engine that tells us what works. You'll work backwards from the customer. You'll find where messages fail to earn engagement, form hypotheses, and run a high-velocity experimentation program with engineering and science. You'll ship the winners as platform capabilities that every sending team can use, not one-off campaign tweaks. You'll measure growth honestly, on clicks, conversions, incremental OPS, and long-term customer value, not opens, and you'll balance short-term lift against opt-outs and customer trust. Key job responsibilities - Own the growth strategy, roadmap, and goals for Outbound's customer attention marketplace: CTR, conversion, incremental OPS per message, and engagement across email, push, SMS, and messaging channels. - Build and run a high-velocity experimentation program. Set the hypothesis backlog, prioritize by expected impact, and make A/B and multi-armed testing fast, trustworthy, and self-service for every sending team. - Own the technical products that drive engagement: personalization and recommendations inside messages, send-time and channel selection, content and creative optimization, and interactive and conversational experiences that let customers act without leaving the message. - Partner with science and engineering to bring ML and AI into who receives what, when, and on which channel, including ranking, propensity and uplift models, bandits, and generative content, and measure their incrementality against holdouts. - Define the growth funnel and its instrumentation end to end, from delivered to opened, clicked, converted, and retained. Make the data reconcilable, real-time where it matters, and attributable to the module, content, and decision that drove it. - Grow the addressable audience: opt-in and permission growth for new channels, reactivation of lapsed customers, and deliverability and reach improvements. - Turn winning experiments into platform capabilities. Write PR/FAQs and requirements, make build-vs-buy and architecture trade-offs with engineering leaders, and drive adoption across partner teams. - Set growth tenets and guardrails, such as opt-out, complaint, and frequency limits, so growth never comes at the cost of customer trust. - Influence senior leaders across Retail, Prime, and partner businesses with data and written narratives, and report growth results and learnings in the Outbound business reviews. - Raise the bar for growth and experimentation practice across Outbound, and mentor product managers.