Our Company

Management Profiles

Innovative Leaders

As engineers, we are methodical, detail-oriented, grounded in specifics of math and practical reasoning. That is the approach we bring to our work, for our customers. We are problem solvers by nature and by training. Everything we do is driven by our basic determination to find the simplest, most dependable and environmentally sustainable way to produce a better result. Our water purification solutions meet the demands and priorities of our clients’ applications. We research. We devise. We revise. We innovate. Our capabilities are as diverse as our clients’ needs. Across the world, our singular approach is working, answering the challenge of production in all its complexity. We are doing what we do best: supplying pure water for this day and tomorrow.



Mr. Queen holds bachelor’s degrees in mechanical engineering and business administration from the University of Colorado Boulder and an MBA from the University of California, Irvine. Greg most recently joined MECO from JWC Environmental, where he served as the President. Before JWC, he worked at Brasstech as the Vice President of Operations. Earlier in his career, he held several leadership roles in Operations for Rosemount Analytical, Liquid, and Micro Motion, all of which are divisions of Emerson. His areas of expertise include operations management, engineering, strategic planning, business development, and business process improvement.



Mr. Klein received his Bachelor’s and Master’s Degree in Mechanical Engineering from Louisiana Tech University.  Mr. Klein worked at Riley Beaird for five years as Project Engineer for heat recovery systems. He has been with MECO since 1985 where he has held a variety of engineering and manufacturing positions since joining MECO and has been involved in many ways with all MECO products. These include large land based thermal and membrane water purification plants, U.S. Military contracts and a vast array of pharmaceutical grade water purification plants. Mr. Klein holds two patents for MECO.

Head of Commercial Operations


Mr. Moe joined MECO more than a decade ago after completing service in the United States Army.  He earned his Mechanical Engineering degree from the University of New Orleans in 2003.  Mr. Moe has led numerous projects and programs at MECO including the LWP development and production.  He has managed and developed numerous seawater desalination projects for various applications.  Over the years, Mr. Moe has become our expert on UF/MF membrane applications. He was promoted to General Manager of MECO Singapore office from 2011 until 2016. In April 2016, Mr. Moe became the Director of MECO Europe & Asia Pacific Operations. In November 2022, he was promoted to Head of Commercial Operations. Mr. Moe is currently based out of the MECO Stafford, Texas office.

Chief Financial Officer

Brendon D'Souza

Mr. D’Souza joined MECO in 2022 as MECO’s Chief Financial Officer. At Grundfos, Mr. D’Souza was the Senior Regional Finance Manager Controlling the Americas Region since 2010. Mr. D’Souza has been with Grundfos for 13 years supporting various parts of the organization from Sales, Service and Operations. Appointed as Plant Controller for GCB in 2016 with responsibility for leading local Operations for finance including driving production productivity. In 2019 assumed the role as acting Finance Manager for PPU being responsible for supporting local management & BOD to gain visibility on the financial performance and in completing key financial processes. Mr. D’Souza holds a Bachelor’s Degree in Economics and Commerce.

Head of Engineering

Chet Nunez

Chet Nunez is the Head of Engineering for MECO. Mr. Nunez has 32 years of experience designing and constructing water purification equipment for the pharmaceutical industry. He has extensive experience with vapor compression, multiple effect, reverse osmosis, ion exchange, and enhanced membrane systems using micro- and ultrafiltration membranes. He received a Bachelor of Science degree in electrical engineering from the University of New Orleans. He is an active, licensed professional engineer in the state of Texas.

Head of Client Services

Bill Essary

Mr. Essary joined MECO in 2003 as a Project Manager and was promoted to Parts and Service Manager in 2009. In January 2023, Mr. Essary was promoted to Head of Client Services.  In addition to being responsible for MECO’s legacy downstream services, Mr. Essary is responsible for the general management role of the newly acquired Water Works business in San Diego, California.  Mr. Essary has been with MECO for 20 years overseeing the downstream support of clients, downstream business development of the firm including the supply of spare parts and service. Prior to joining MECO, he spent 9 years in engineering, project management and procurement with Aquatech International, where he managed several domestic and international water treatment projects in various industries. Mr. Essary holds a BSc in industrial engineering from West Virginia University.

Head of Operations

Steve Marshall

Mr. Marshall was with Grundfos for almost 20 years and transitioned to the MECO team in 2022.  Now as Head of Operations for MECO, Mr. Marshall brings a strong focus on creating satisfied customers while driving safety & sustainability, quality, delivery, and employee motivation & satisfaction.  He has over 25 years in Operations holding numerous positions of responsibility supporting Quality, EHS, Manufacturing Engineering, Purchasing, Planning, CSU Engineering, Plant / Site Leadership as well as Operations Strategy on a local, regional, and global scale.  Mr. Marshall holds a Bachelor’s Degree in Business Administration from Sam Houston State University.

General Manager of MECO Asia-Pacific

Jason Koh

Jason Joined MECO Singapore as Business Development Manager in 2013. Prior to joining MECO, he has more than 15 years’ experience in Technical Sales Roles in Asia region, covering mainly the Electronics
Manufacturing & Semi-Conductor industry. Has has a Mechanical Engineering Degree from Nanyang Technological University and MBA from Adelaide University. He has taken over the General Manager Role
for MECO Singapore office since 2016, handling the Sales & Service for MECO Clients in the Asia Pacific Region.

General Manager of MECO Ireland Ltd.

James Clifford

James joined as General Manager for MECO Ireland in April 2021. He brings more than 15 years’ experience to MECO, having worked in a variety of engineering & commercial roles across manufacturing and medical device industries, including eight years with an Australian water pumping & purification equipment manufacturer. James has a Mechanical Engineering degree from National University of Ireland, Galway and a Master of Marketing from Melbourne Business School. James is responsible for handling the Sales & Service for MECO Clients in Europe.

Manufacturing Manager


Mr. Mondello is the Manufacturing Manager. He has been with MECO since 2011. He has a Bachelor of Science in civil engineering from Louisiana State University. Mr. Mondello has been MECO’s Quality Manager for the past six years. During his tenure in this position, Mr. Mondello has made significant contributions to our quality program and quality objectives as evidenced by all measures. His hard work and professionalism have made him an outstanding representative of MECO. As such, his experience has provided him with the opportunity to become intimately familiar with MECO system procedures, work processes, and the industry needs.

Marketing Manager

Natolie Grabert

Mrs. Grabert joined MECO in 2014 and assumed her current role as Marketing Manager in 2017. Mrs. Grabert develops marketing strategy and implements initiatives co current with the firm’s objectives for business development. She is responsible for the firm’s brand management, market communications and all marketing activities. She is an active member of the AMA and is engaged with various international organizations the firm is associated with. Mrs. Grabert is a graduate of the University of Mississippi with a Bachelor of Business Administration Degree in Marketing.