nextgen_ideaball-Our Staff

The History of NEXTGen

Two executives. Three decades of experience. One idea. NEXTGen.

Our experience dates back to the early ’90s when our principals, Tina Obremski and Michael Crossan, started their careers. The two worked together at an agency for 15 years before they formed NEXTGen in August of 2009. The agency continues to expand its staff and services each year. Created to offer clients the means to succeed in this ever-changing business climate, NEXTGen is a young, fresh company with traditional practices that produce results.

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Michael Crossan (CEO)

Michael began his advertising career, after graduating from East Carolina University with a Bachelor of Science degree, at Grey Advertising in New York. He was promoted to Account Executive with Grey Entertainment and Media handling some of the most prominent accounts at the agency. In 1991 he accepted a position as Account Manager with Topline Advertising on Long Island and within a few years was named Vice President at the agency.

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Tina Obremski (COO)

Tina began her advertising career with Topline in 1994 and over the years climbed the ladder to a position of Vice President, where she managed the client services of the agency. Tina’s client experience runs the gamut with government, political, retail and B2B. She has handled accounts including economic development and environmental, various BIDS, fairs, retail chains, large automotive groups, and many others.

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Kimberly Mirelli (VP of Media Services)

Kimberly was a key player in developing PC Richard and Son’s in-house advertising department.She handled budgeting, planning and co-op negotiations. She went to work at Topline Design in 1998, immediately after she returned to NY. Kimberly has been with NEXTGen since its inception in August of 2009, handling everything from research, planning, negotiating, budgeting and proof of performance for our clients. Kimberly graduated from New England College, New Hampshire with a BS in Communications with a concentration in advertising. She resides in Smithtown with her husband and two daughters, age’s 11 and 12, and coach’s basketball and softball.

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Barbara O’Keefe (Bookkeeper)

Barbara is a true Long Islander who loves spending time at the ocean. She enjoys spending time with her family and friends and loves to cook. Barbara joined Nextgen when the doors opened in August 2009 as a full charge bookkeeper with over 20 years of various accounting experience. She handles all aspects of a/p, a/r, payroll, payroll taxes, quarterly taxes and all client billing. As office manager Barbara handles all personnel and insurance information for both the company and employees keeping them up to date on any changes. Barbara maintains the supply and demands of the office on a daily basis for a smooth operation and is looking forward to a long future at Nextgen Advertising.


Stephanie Mraz (Account Manager)

Stephanie Mraz is a St. Joseph’s College alumni with a degree in Accounting and Marketing. Her passion for automotive technology lead her to pursue a career in automotive advertising. Easily adaptable, she works on an array of industries providing content for radio, TV, print and social media. With a desire to help others, she participates in the Moxxie Mentoring Foundation which offers professional development to women on Long Island.


Ryan Winters (Assistant Account Executive)

Ryan graduated from York College of Pennsylvania with a degree in Marketing and Advertising. Eager to jumpstart his career in the Advertising industry, Ryan joined NEXTGen in January of 2017. He currently oversees a wide variety of client content including radio, TV, print, and social media. When he’s not hard at work. Ryan enjoys playing basketball and spending time with his family and friends.


Sam DiMattei (Art Director)

Sam DiMattei graduated from SUNY Purchase with a BFA in graphic design in 2015. After graduation Sam started to freelance until landing her first design job at a Long Island Publication. She also had an internship in NYC at Sharpleft Digital Marketing Agency. Besides design she also has knowledge of other art forms including sculpture, book binding, ceramics and woodmaking.


Olivia Brodtman (Graphic Designer)

Olivia graduated from Parsons School of Design in 2017, she received a BFA in Communication Design. Her education has gave her the tools necessary to work with a wide range of media, including digital, print, and video. After school, Olivia joined a group of creatives to produce the digital series “Gray Ground” as the lead graphic designer. In March of 2019, Olivia joined the team at NextGen as a graphic designer and video editor.

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