2024 — Present
Global Chief Commercial OfficerUTR Sports
Full commercial P&L leadership — uniting brand, marketing, sales, and monetization to scale a global sports technology platform.
P&L OwnershipCommercial StrategyGlobal Growth
Chief Marketing Officer · Raleigh, NC
Madelyn K.
Sheldon
Global marketing executive with 20+ years building beloved brands and scaling subscription businesses — from Amazon Prime and Alexa to connected fitness at Tonal.
~$985Mmarketing portfolios directed
Scroll
$0M
Marketing investment directed
0M+
U.S. Prime members, grown from 30M
$0M
Incremental revenue created at Tonal
0+
Years of global brand leadership
Meet Madelyn
Executive acumen and creative vision — in one leader.
I chose marketing because it sits at the intersection of business, product, technology, consumer behavior, and creativity — and because I'm fascinated by how people form lasting affinities for brands.
Over two decades I've built contemporary brands and product ecosystems that delight customers — bringing voice technology to market with Echo, building equity and utility in the Alexa brand, and scaling Amazon Prime into one of the world's largest subscription programs.
Today I bring that same rigor to P&L ownership, pricing and monetization, AI-enabled marketing, and building high-performing global teams — as a partner to CEOs, founders, and boards.
Experience
Two decades of brand-to-revenue leadership.
2022 — 2024
VP, Marketing & SalesTonal
Directed $50M+ budgets across brand, performance, retail, and lifecycle for the leader in smart strength training — creating $19.7M in incremental revenue and driving durable CAC/LTV improvements.
$50M+ Budgets$19.7M Incremental RevenueDTC & Omnichannel
2018 — 2022
Global Head of Brand & Product MarketingAmazon — Alexa & Whole Foods Market
Built the Alexa brand into a household name — including Super Bowl campaigns like the Emmy-nominated "Alexa Loses Her Voice" — while leading global brand and product marketing across Echo, Fire TV, and Whole Foods Market.
Emmy-Nominated WorkSuper Bowl CampaignsGlobal Brand
2011 — 2018
Global Head of MarketingAmazon — Prime, Consumer Electronics & Emerging Tech
Led Prime growth from 30M to 125M+ U.S. members and managed nearly $1B in global marketing investment — helping build one of the most successful subscription businesses in history.
30M → 125M+ Members~$1B InvestmentSubscription Growth
"Be resilient and adaptable. Work hard, have fun — and when you can, make history."
Madelyn's advice to the next generation of marketers
Expertise
Full-stack marketing leadership, brand to P&L.
Voices
What leaders say about working with Madelyn.
Q & A
In her own words.
Beyond the boardroom
5 marathons, 17 half marathons, two great kids.
01Health & Wellness
02Travel & Culture
03Volunteering & Community
Let's build something worth remembering.
Open to CMO, CCO, and CRO opportunities, board advisory, and conversations about brand, growth, and AI-enabled marketing.