SUMO Heavy Industries, Bart Mroz and crew building new e-commerce development firm
If Bart Mroz was pushed to give you a piece of advice, it just might be to limit yourself.
The founder of the recently re-branded SUMO Heavy Industries says a lot of firms doing web work get caught up in trying to do too many things and come up short doing them well.
“We started as a web development company that did all kinds of things like brochure sites and app development for different clients,” Mroz tells Technically Philly. “Then we decided to only do e-commerce work — the best decision that we made.”
In March 2008, Mroz co-founded round3media and by last November, Mroz had learned his greatest skills were focusing strictly on e-commerce site development. After his two partners in round3 wanted to work on different projects, Mroz started anew, launching e-commerce heavy SUMO with new partner Robert Brodie and creative director John Suder.
With a new name and a freshly announced, local client, Mroz is — and forgive us for this — entering the dohyō and fighting to build his company’s name as the top e-commerce development company in the region.







It’s the last week of the month, and October isn’t going to go quietly. Our events calendar is chock full of fun times to close out the month. And, as a bonus, only one involves costumes.
Updated 9/11/09, 2:15 p.m.: Clarified summit tracks, noted “no frills” package clarification, and updated Philly panelists.











