The people who built your strategy are the ones running it. Our leadership team brings decades of
holding company and performance media experience to every client engagement – accountable to your
growth, not billable hours.
Kate O'Brien
Founder and Chief Executive Officer
Kate spent her career building and running performance media inside the largest holding companies in
the world. She founded Powers because the industry's economics were broken: agencies profited from
spend, not from results. She built a model where client savings are guaranteed, performance is
measured against real business outcomes, and every dollar is accounted for.
Jenna shapes the financial architecture behind Powers' model – the pricing strategies, client
economics, and transparent reporting that make guaranteed savings possible at scale.
Jason leads brand, marketing, and new business at Powers, helping the agency tell its story and grow.
He spent a decade at Omnicom, where he was one of the first 20 employees at Hearts & Science,
built its marketing function from scratch, and helped it grow to 1,600 people across 37 offices.
His work connects how an agency presents itself with how it wins business.
Brian leads client strategy at Powers, ensuring every media plan is built to deliver results that show
up in the P&L – not just in a media report. His expertise spans data analytics, omnichannel
performance, investment strategies, and attribution measurement.
Millie Diaz leads integrated communications, media strategy, and planning at Powers, ensuring every
engagement is built on a foundation of research, analytics, and a clear path to growth. She brings a
cross-category fluency shaped by two decades across pharma, consumer healthcare, CPG, and
business-to-business.
Guilherme leads creative direction at Powers, helping clients turn strategy into brand identities,
campaigns, and content. He previously led creative for content and social platforms at Nubank and
was Senior Art Director at Nexo Jornal in São Paulo. His experience spans visual identity, digital
experiences, print, and film, bringing creative thinking and execution into the same team that
plans and runs the media.
Andrea brings a rare perspective to media strategy: she's worked both sides of the table. After years
on the agency side planning and buying media, she spent time on the client side, which means she knows
what it's like to be the person receiving the recommendation, not just the one making it.
Every account is led by the senior operators who built the strategy, supported by an extended network of
channel, data, and analytics specialists deployed as the work requires, with no junior handoffs and no
layers between your strategy and its execution.