We make it our business. To be at your service.


Jeffrey McCary
Founder, Architect, Developer

Jeff earned a BS cum laude in Electrical Engineering from Drexel University and an Master of Science degree in Computer & Information Sciences from Temple University. As Senior Systems Analyst and Systems Development Manager, he spent 10 years developing data systems and software projects for the Temple University School of Medicine and Department of Pharmacology. Jeff also developed data systems at BAE Systems and General Dynamics Robotics Systems.

Jeff opened the doors to The McCary Group, Inc. in 2001.  He mobilizes and leads “McG’s” talent and resources of developers, designers, strategists and subject matter experts.

His entrepreneurial energy and partnering intelligence also is embodied in, a social commerce platform and mobile app that he co-founded in 2012 and for which he served as Chief Technology Officer. He is a partner in food distribution enterprise, The Bacon Jams, LLC.

This digital entrepreneur simply loves business + technology, and the cool stuff he gets to build.

Jeff is a road, cyclocross, mountain and track cycling enthusiast.


Jeff Slater
Senior Developer, Lead

Jeff is all about front-end development, especially working with tools Sass and Gulp, and making sure he stays on top of new front-end dev technologies. Clients tell us — and we agree — Jeff is easy to work with and dependably brings creative insight and perspective to the table.

Known around McG as “Slater,” he’s a proud native Torontonian. Jeff supports our clients around the U.S., while holding down our Canadian office.

Jeff is an unabashed bacon fan. That said, lately he’s been compensating with a commitment to healthier eating (around the bacon, we wonder?) and being physically active. Two favorite tools he’s convinced will support this new regimen: a stand-up desk and the activity monitor on his Apple Watch.

Besides bacon, his not-so-guilty top pleasure is compulsively acquiring the latest Apple tech …  no expense spared. He’s an ardent fan of traveling, tech conferences, supporting the local political scene, “cats” in general, and amiibo and Nintendo. Jeff is the successful co-creator of at least one webgame we know of.

Madisyn is pursuing multiple degrees, in finance and in marketing and public relations. Financial Services is a key domain for McG, and Madisyn enriches what we can bring to the table for our professional services clients. 

At every opportunity, rising star Madisyn flexes her penchant for personal training, urban and product photography, adventurous travel, and using her Spanish speaking skills. Working with animals is a passion. Madisyn volunteers her time and talent training dogs for a local animal welfare organization.


Carolyn Stinson

Content & Public Relations Architect

Carolyn helps McG clients bring a voice to their brand, shape their marketing messages, and take their products or services to the right audiences.  Her credits include stints as marketing and public relations director in regional professional services firms (CPA and law) and in the legal and marketing departments of Medifast. 

A stringer for The Washington Post once told her, “You know how to frame and conceptualize stories better than just about anyone in your profession that I’ve ever worked with.”

Carolyn has developed extensive domain experience in content marketing and PR for law, accounting, health care, financial and business advisory services, and specialty niches in the hospitality and events industry. She is the co-author of a top seller consumer health book and consults for non-fiction subject matter experts interested in writing and publishing.  

Five warmblood horses and a 200 pound Japanese mastiff “Angel” share the homestead with Carolyn and her husband.