Our People

The best company for the ambitiously minded.

Speaking from experience, we have plenty.

At MacGregor Partners, it all starts with people. That’s why we have been consistently recognized as a top employer, accumulating accolades such as one of Milwaukee’s Best and Brightest® companies to work for in 2017 and 2018. This focus on our people enabled us to make the Inc. 5000 list for the fastest growing private companies in America in both 2017 and 2018.

But we don’t just hire exceptional people. We empower them. By investing in the latest in-house technology and actively bettering our workplace culture and employment benefits, MacGregor is a company designed to let supply chain experts unleash their full potential.

 

 

  • Jason R. Ziegler
    Jason R. Ziegler
    President
  • Nicolas Cellé
    Nicolas Cellé
    EVP, Operations
  • Matt Toburen
    Matt Toburen
    Vice President of Service & Product Delivery

Jason R. Ziegler

President

Jason is an entrepreneurial executive with experience spanning sales, software development, supply chain consulting, and emerging technology implementation. He brings a unique and valuable business perspective to any engagement, having sold, implemented, and consulted for numerous Fortune 1000 company’s most transformational supply chain, distribution, and technology projects.

In 2012, Jason founded and has since grown MacGregor Partners, a supply chain software and consulting firm, into a multi-year Inc. 5000 recognized organization that sells SaaS software and supply chain consulting services to the largest manufacturers, 3PLs, and retailers across the world. Software and services that enhance visibility, service levels, throughput, customer experience, and profitability.

Today, Jason leads MacGregor’s sales and marketing teams along with the go to market strategy for software and services. Additionally, he assists MacGregor’s client organizations through digital transformation, sales strategy and differentiation, and helps create their path to leverage technology that creates seamless and experiential customer interaction.

Prior to MacGregor, Jason held positions at the largest contract logistics provider in North America, DHL/Exel, and the supply chain software firm, RedPrairie (now JDA), in technology and sales focused roles.

An avid runner, alpine skier, and aspiring golfer, Jason holds a BA in Economics and Mathematics from Wittenberg University.

Nicolas Cellé

EVP, Operations

Nicolas is responsible for all of MacGregor’s software development/IP and has more than 15 years of supply chain and software development experience. Nicolas began his career at Rockwell Automation developing and implementing their Manufacturing Execution Systems for many large pharmaceutical companies, then integrating these systems with many best-of-breed ERP and middleware solutions. He then transitioned into a role as a professional services leader at RedPrairie, before landing at PSS (now McKesson Medical Surgical), a leading medical product distributor. At PSS he was responsible for their IT vision along with the deployment and on-going success of RedPrairie solutions across a dozen distribution centers. This position taught Nicolas to leverage his development and system knowledge toward continually improving their WMS, LMS and incentive solutions, providing immense financial value to the operation through a consistent, repeatable, and scalable solution throughout their supply chain.

Beyond Nicolas’s numerous technical skills from his time as a developer, he brings real-world operational expertise from his time within industry that sets him apart from his peers. This rare combination of operational and development expertise equips Nicolas with a unique and powerful perspective in solving tough technical problems or designing software solutions. When working with someone like Nicolas, you quickly realize that while many technical solutions are feasible, Nicolas ensures MacGregor’s clients choose the ideal and most simple option to meet their ROI/goals.

Matt Toburen

Vice President of Service & Product Delivery

As VP of Service & Product Delivery, Matt is responsible for managing MacGregor’s partnership with Swisslog North America, a leading automation solutions provider in the distribution, healthcare, and automotive spaces. In addition, he helps drive innovation and growth through his involvement in product management, analytics, and the development of additional service offerings to further support and differentiate MacGregor’s strong core consulting business.

Toburen has more than 15 years of experience designing and delivering innovative software solutions across multiple industries including automotive, material handling, and wholesale distribution. Most notable are his contributions to the analytics space in the logistics industry, having delivered innovative and unique analytics solutions while at Dematic and in industry across enterprises as head of technology.

  • Kristin Buck
    Kristin Buck
    Senior Director, WMS Delivery Services
  • Roman Reynebeau
    Roman Reynebeau
    Senior Director of Development Operations

Kristin Buck

Senior Director, WMS Delivery Services

Kristin has responsibility for all of MacGregor’s consulting activities. She has more than ten years of WMS and supply chain experience on the JDA product suite, split between Exel/DHL and consulting.

Kristin unites an attention to detail, self-starter leadership, and impeccable track record of implementation success across numerous industries and verticals. Her expertise helps guide the growth of MacGregor’s consulting practice while maintaining our rich partnership with existing clients.

Kristin is a rare talent who can lead the strategy of MacGregor’s consulting to engage multiple industries while understanding and designing software to drive preferred systemic behavior. This, combined with her MBA and educational credentials, equips her to master the challenges of today’s supply chain and position MacGregor to better serve our client base across any vertical.

Roman Reynebeau

Senior Director of Development Operations

As head of dev ops, Roman is responsible for leading our talented software development team and turning ideas into real software that can solve the most complex supply chain challenges. Roman is a seasoned supply chain software veteran with more than a decade of experience having served in a wide variety of roles spanning software development, software consulting, software implementation, and software support.