meet the team

Our team of seasoned experts helps companies, organizations and individuals develop targeted, relevant and authentic narratives and proven communications strategies that consistently deliver measurable gains.

Founder & CEO, The Messina Group

Jim is founder and CEO of Greenbrier's parent company, The Messina Group (TMG), a full-service strategic consultancy. The mastermind behind President Obama’s 2012 re-election campaign, Jim’s strategies established the modern presidential campaign. In 2013, Messina launched TMG. In this role, Messina provides strategic consulting to Democratic organizations on domestic political issues in the U.S. and businesses worldwide. Previously, Jim served as Deputy Chief of Staff in President Barack Obama’s White House and Senior Advisor and Chief of Staff to former Senator and Ambassador to China Max Baucus. Jim provides insight on news outlets such as MSNBC, CNN, Bloomberg, Fox News, BBC, and others. In addition, Jim serves on the boards of, Fortera,, LanzaTech, the United States Soccer Foundation, and the Montana Land Reliance.


Adrian is a senior communications and government relations expert with extensive experience handling corporate, financial, crisis, policy, and executive communications, often in high-pressure environments. He joined Greenbrier from Lyft, where he was head of communications. Before joining Lyft, Adrian held multiple roles at McKesson, a Fortune 10 healthcare company. Prior to that, he held several positions within Massachusetts politics. Adrian completed a dual MBA-MPH program at UC Berkeley, and received his undergraduate degree from Dartmouth College. He lives in Massachusetts with his wife, Claudia, and their three children.

Vice President

An expert in finance and digital currency, Abram has been part of the Greenbrier team since the start. Cutting his teeth during the frontier years at Uber, Abram has developed a reputation among clients and colleagues as infinitely reliable and always thinking a dozen steps ahead of a challenge. Abram is a native of Northern California.


Annie is a seasoned publicist who has spent her career working with both established brands and launching startups within the tech and entertainment spaces. Her experience spans across apps, consumer products, lifestyle, digital content, television and film. She is passionate about her clients and works fervently to keep them in the spotlight by managing communications efforts through integrated, creative strategies centered on executive visibility, media relations, events and more. Annie is based in Portland, Oregon.

Communications Associate

Over a decade of designing and executing winning policy, communications and digital strategies. Arturo was part of the historic Hispanic Media teams which helped President Barack Obama and Senate Minority Leader Harry Reid win their reelections. His career has included positions in the U.S. House of Representatives, Department of State, Department of Homeland Security, and the IRS amongst many others. Arturo is a native of Mexico and based in Los Angeles.

Senior Consultant

With a communications career spanning over a decade, Dacyl is as familiar with an Austin editorial board as she is with a new market launch in Scottsdale. Dacyl is an expert in consumer and brand communications, and is known for her deep relationships with local media across the United States. Dacyl is based in San Francisco.

Communications Manager

With a background in branding, marketing, and advertising, Allison brings years of strategic and executional experience to Greenbrier. Her work in the travel and nonprofit industries and with Chick-fil-A and AT&T while at The Richards Group and Epsilon provides a creative perspective for clients. Allison is based in Dallas.

Senior Consultant

Lauren is a PR pro who focuses on healthcare, retail and financial services. Previously internal to Amy’s Kitchen, Lauren led internal communications, crisis and consumer events across the U.S. and Canada. Lauren has worked with some of Silicon Valley’s leading PR firms and managed accounts for the biggest names in tech. Lauren is based in the Bay Area.

Executive Assistant

Mandy ensures the smooth operation of daily schedules and efficient handling of client inquiries to enable timely access to the Greenbrier team as needed. Mandy manages administrative duties such as calendar management, event coordination, travel accommodations and client communication. Mandy is active in her community as a small business owner in the strength training industry. In her free time she enjoys biking, camping and hiking in and around Portland, Oregon.

Ashley Nelson
Senior Communications Associate

While earning her Masters in Strategic Communication, Ashley built upon her course work by creating and executing communication campaigns tailored to her local community — including campaigns to increase Floridians’ COVID-19 vaccination uptake — where she developed a deeper understanding of best practices for audience engagement and how to utilize research and theory to shape human behavior. Ashley’s cumulative professional experiences can be boiled down into a simple statement: she wants to make this world better, and she believes one way to do so is through effective strategic communication. Her passionate nature makes her a valuable member of our team as she is always looking to research and strategize to overcome the next challenge.