Transform Chaos Into Scalable, Best-in-Class Operations

We help senior leaders refine their people, processes, and systems by building and executing short- and long-term strategies for operational excellence.

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Are You a Scaling Business Struggling with Operational Inefficiencies?

Are you a $20M to $700M D2C or B2B company that recognizes your current people, processes, and systems are not sustainable for long-term growth? If so, you might be facing these challenges:

Rising Operational Costs & Inefficiencies

You know your processes aren’t best-in-class, but pinpointing gaps and optimizing costs feels overwhelming.

Lack of a Clear
Execution Plan

You see the need for transformation but don’t have an actionable roadmap to get there.

Underdeveloped & Overwhelmed Teams

Your internal team lacks the skills or experience to drive operational change effectively.

Unsustainable Improvements

You’ve tried implementing changes, but they don’t stick, leading to recurring inefficiencies.

Strategy Without Execution

Consultants identify problems but don’t help execute solutions, leaving you with ideas but no real progress.

If this sounds like you — Hi,

I’m Mandy Shellnut,

An operational expert and founder of OPEXcellence, which provides consulting and fractional operational leadership.

With 24 years of experience, I help senior leaders assess their organizations, people, processes, and systems to develop short- and long-term strategies that drive best-in-class operations.

Unlike other consulting firms that merely identify opportunities, I execute and coach your internal teams to ensure that operational improvements are sustainable and cultivate internal capabilities.

I don’t just provide strategy and direction—I also implement changes and upskill your talent, ensuring long-term success.

I’ve built a brand on my love for learning and mentoring, which fosters trust when partnering with organizations. My results-driven approach helps companies achieve best-in-class operations while also bringing out the best in their people along the way.

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here are some clients we’ve worked with

Listen to What Our Clients Have to Say

It was an absolute pleasure working with Mandy. She brought immense value to the team and was a key driver in two critical initiatives for our business.
First, Mandy was brought on board to help us expand our Total Addressable Market (TAM), a project that spanned over six months. Her deep expertise in go-to-market strategies was evident as she seamlessly supported various aspects of the business, including sales, marketing, financials, and product development. Mandy didn’t just execute; she acted as a true force multiplier, taking ownership of complex initiatives that our leadership team, due to time constraints, simply couldn’t tackle at the executive level. Her ability to step in and take the wheel made an incredible impact on our strategic growth and positioning in the market.

Second, Mandy demonstrated her exceptional crisis management and operational skills when one of our legacy technologies was hit by a ransomware attack. Without hesitation, she stepped in as the project manager, guiding the recovery efforts with precision and grace. Mandy played a pivotal role in coordinating the team, managing the recovery process, and ensuring business continuity during a very challenging time.

With her years of operational experience, Mandy brought a level of professionalism, calm, and leadership that helped us navigate both opportunities and tough situations. Her contributions were invaluable, and I would highly recommend her to any organization looking for someone who can lead with impact and drive results.
Siera Smith, MBA
Mandy was such a gift to our small and mighty startup!
Her professionalism, deep knowledge of key players in the furniture/home furnishings 3PL space, and ability to get the business onboarded in record time (WITHOUT a single hiccup!) was exactly what we needed. She did more in 45 days than we were able to accomplish on our own in 4 months. Her communication is top notch. Her value is undeniable. Our only wish is that we would have engaged her sooner. I highly recommend Mandy and would not hesitate to bring her on for another project in the future.
Kari Albert

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Are you Ready to Turn Opportunities into Execution & Scale with Confidence?

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