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Infinite Performance Group | Denver/Boulder, CO

Meet Our Sandler Team

We strive to be the best
at what we do, and help
you to do the same.


Darrel Risberg


At Sandler Training, Denver-Boulder we have helped hundreds of businesses succeed by optimizing, adopting and mastering manageable processes in their sales and sales management efforts.

We are committed to helping clients get comfortable with taking control of the selling process, and managing people through breaking the rules of traditional approaches with ongoing reinforcement training and coaching.

Our mission is to live abundantly by helping others to live abundantly. We believe this is achieved by a servant leadership approach to business, providing engaging and inspiring training, and truly loving our neighbor. We strive for the highest standards of integrity, responsibility and joy for life, as well as good stewardship and profitability.

We don’t do traditional sales and sales management training. We teach our clients the art and science of applying a 2-way authentic communication model and processes that develop deeper trust with prospects, customers and employees leading to deeper engagements which drive personal growth and organic revenue growth.
Specialties: Sales, Sales Management, Customer Care, Strategic Sales Consulting, Sales Skills Assessments, Keynote Presentations, Customer Service Training, Negotiating Skills Training, Presentation Skills Training, Selling through Educational Seminars, Strategic Account Management, Strategic Enterprise Selling, Prospecting, Leveraging LinkedIn.


Jill Risberg


Jill brings over 25 years of corporate sales and customer service experience to Sandler Training, where she serves as COO.

Sandler Books

The Sandler library of books includes two Amazon and Wall Street Journal best sellers, as well as the best-selling sales classic for any sales book ever.