Cindy Mardenfeld


LIMBA Co-Chair

Cindy Mardenfeld is the president of Infinity Relations, Inc., a full-service marketing company that specializes in branding, event management, media outreach, social media and strategic planning. She is well regarded by the Long Island business and not-for-profit communities for her skills in marketing, communication, fundraising, networking, and the execution of corporate and non-profit events.

Mardenfeld’s diverse experience includes organizing start-up projects, volunteer management, logistics, community/media relations, and sponsorships. In addition, Mardenfeld works with clients to achieve their social media, marketing, and strategic planning goals. She also plans meetings and executes events for several organizations, corporations, and non-profits. Through her work experience and accomplishments, she has garnered a reputation for getting the job done right.

She is most proud of her accomplishments in fundraising. She feels privileged to have worked with the best in her field at many prestigious non-profit organizations on Long Island, including: The American Cancer Society (ACS), Cancer Care of Long Island, United Cerebral Palsy of Nassau County, and the National Multiple Sclerosis Society (Long Island Chapter).

Her proudest fundraising accomplishments include organizing the first Relay For Life in Suffolk County. A signature event planned all over the country for the American Cancer Society, which exceeded its financial goal by over 500 percent. Mardenfeld has a natural gift for establishing relationships with national and international companies. She established the partnership between FedEx and ACS. FedEx now delivers all the daffodils throughout Long Island and across the country for the American Cancer Society’s Daffodil Day event for free, which was previously done by staff and volunteers.

Mardenfeld is involved with many business and professional organizations including:

Vision Long Island; Fair Media Council (FMC); Long Island Association (LIA); Long Island Software & Technology Network (LISTNET); Long Island Metro Business Action (LIMBA Co-Chair); Cortland College Long Island Alumni Association; Long Island Community Chest (Former Board Member); Long Island Fight for Charity. (former co-event chair and a founding committee member).