Marshall Ariza

Leveraging a background in financial accounting, Marshall Ariza’s expertise is drawn from decades of hands-on experience in Lean, Six Sigma, Design for Lean Six Sigma, and New Product Development. He works closely with a variety of clients to design, plan, and implement process improvements that result in competitive repositioning in the market.

Marshall’s career has afforded him the opportunity to work in numerous industries such as manufacturing, consumer products, food service, medical testing, insurance, and airline industries. He has substantial experience working in finance and accounting at both the corporate and plant level. He also has demonstrated experience in supply chain, material planning, database management, and ERP.

Previous consulting work includes performing financial valuation and reasonability tests on acquisition/divestiture targets for several units of a technology-based manufacturing company. Prior to Firefly Consulting, career highlights include earning project recognition from the Secretary of the Navy for his work in assisting a team to develop an agile “rapid response process,” reducing the time required to field critical material needs to frontline warfighters by 50%.

Marshall has trained over 1100 executive leaders and 1600 Master Black Belts, Black Belts, Green Belts in Lean Six Sigma and Design for Lean Six Sigma methodologies around the world. He is routinely recognized for his ability to effectively apply Lean Six Sigma tools to projects and develop innovative new applications for these tools.

Marshall's Publications and Insights

Published by Firefly Consulting, 2024.
Published in the Quality Management Forum, 2021.
Five steps to more innovative project results. Published in Lean & Six Sigma Review, 2019.
Look Before Making the Technology Leap
Before you invest in robotic equipment, Marshall Ariza suggests avoiding these common pitfalls.
Before You Start Your Continuous Process Improvement Journey
Marshall Ariza provides sound guidance on how to get started with continuous improvement.


Innovative insights delivered to your inbox once a month

We hate spam and will never share your information. You can unsubscribe at any time.

Newsletter Sample


Operations Consulting

We have consulting experience with engagements as diverse as mergers and acquisitions, operations strategy, supply chain acceleration, shop-floor process improvements, and call center efficiency improvement.

Operational Excellence Word Puzzle

Word Puzzle Challenge

How much do you know about Operational Excellence?

Play our continuous improvement version of a popular word game, with a new word every day. Can you guess today’s word?



Assessments are customized to meet your goals, leveraging our frameworks and knowledge of best practices from years of industry experience. Recent work has been in financial services, insurance, healthcare, manufacturing, and supply chain.