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About Us

 

TSG helps enterprises modernize with intent by aligning technology initiatives to business outcomes and turning investment into sustained operational performance. We work alongside you to improve how work gets done, decisions are made, and value is delivered so progress holds long after implementation. 

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Trusted leader in modernization for over to decades

 

Since 1999, TSG has partnered with organizations navigating constant change. As technologies evolve, risks shift, and priorities reset, we help leaders ensure their investments translate into real improvements in how work gets done, decisions are made, and value is delivered.

Our approach is grounded in people as much as platforms. We work side by side with client teams to modernize systems, strengthen capabilities, and build the confidence needed to operate in new ways. Rather than handing off strategy to execution, we stay engaged from idea through adoption so progress happens while change is underway.

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How we show up for you

The way we work is as important as what we deliver, grounded in trust, ownership, and the determination to see complex challenges through to real results. 

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Trust
 
We earn your trust through consistency, transparency, and follow-through. It is the foundation of every partnership we build.  
 
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Service
 

We take ownership of your outcomes, not just your deliverables. Your priorities become our priorities.  

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Grit
 
We stay focused when things get hard. Grit is how we turn complexity into progress and challenges into results.  

Meet our senior leaders

Our leadership is made up by innovative thinkers, approachable leaders, and collaborators who push the edge of what’s possible.

Eric Castorina

Eric Castorina

Sr. Director, Learning Performance + Optimization

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Whitney Dannecker

Whitney Dannecker

VP, Technology

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Becca Denslow

Sr. Director, Service Delivery

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Byron Dunn

Byron Dunn

Vice President of Delivery

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Zach Earls

Zach Earls

Chief Revenue Officer

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Fletcher Emery

Fletcher Emery

Sr. Vice President, Client Development

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Ben Hampshire

Ben Hampshire

Sr. Director, Solution Development

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John Hamrick

John Hamrick

Vice President, Financial Services

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George Karakostantis

George Karakostantis

President Chief Executive Officer

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Mari Orr

Mari Orr

Controller

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Tony Perry

Tony Perry

Chief Financial Officer

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Dustin Sandoval

Dustin Sandoval

Vice President, Consumer + Industrials

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Abby Shackelford

Abby Shackelford

Vice President, General Counsel

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Pete Spangenthal

Pete Spangenthal

Vice President, Healthcare + Communications

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Brezny Weening

Brezny Weening

Vice President, People

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Tom Whitely

Tom Whiteley

Chief Operating Officer

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Kristen-van-Wijngaarden-500x500

Kristen van Wijngaarden

Vice President, TSG Federal 

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Ross Witte

Ross Witte

Vice President, Energy + Utilities

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Sheldon Wolitski

Sheldon Wolitski

Founder, Chairman of the Board

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Join our team

We believe the best results come from people who feel valued, trusted, and inspired. If that matters to you, you belong here. 

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