Relationships first.
Listen, understand the person behind the business, and make introductions that have a reason behind them.
The story behind Concordia
“Do you know someone who can help with this?”
For years, that question has followed me through business, the firehouse, and everyday life. Connecting people has always come naturally to me.
I’m Jeff Stack, founder of Concordia Group. With more than 15 years in business development and relationship building, I’ve learned that growth often begins with understanding what someone needs—and knowing the right person to bring into the conversation.
Sometimes it starts with a simple introduction. Sometimes it takes a clear sales plan, consistent outreach, or someone willing to follow through. I created Concordia to bring those pieces together with purpose.
Helping a small business find its next opportunity or a larger company build the right partnership is a true passion of mine. Concordia gives that passion a home.
Jeff StackFounder, Concordia Group
Listen, understand the person behind the business, and make introductions that have a reason behind them.
More than 15 years in the fire service have taught me to communicate clearly, stay accountable, and show up when people need me.
A connection is the beginning. Consistent action, honest conversations, and shared priorities help it become something lasting.

The Labrador behind the logo
My Labrador, Lou, is a daily reminder of what loyalty looks like. He shows up, stays close, and brings a steady presence to every day.
The Labrador in Concordia’s logo carries that same spirit: building trust, being consistent, and staying committed to the people I work with.