Meet Our Team
GPS staff members believe in working as a team to deliver high-quality, convenient and on-time service

Andres Sifontes
Sales, Santiago Office
I joined the Great Plains team in 2018. I am a Production Engineer and I have specialized in the technical sales. I like to practice sports, especially soccer. I enjoy outdoor activities and share with friends and family. I am proud to belong to this excellent team and be able to provide innovative solutions to our clients to make their projects reality.
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Claudia Villarroel
Administrative Assistant, Santiago Office

Francisco Martinez
Warehouse, Santiago Office
I am Francisco Martinez and I am 24 yeas old. I have joined Great Plains in April 2021 and I hope to work here for a long time. My hobbie is playing soccer.

Joseph Gibbons
President, CEO, Nelson Office
I was born and raised in Chicago, the oldest of 12 children. I moved to Tulsa in 1975 to be with my wife’s family when we were expecting our first child. I am a long time practitioner of Transcendental Meditation (since 1971), a yoga junkie, a hiker, and a piano player. I love Notre Dame football and the “All Blacks”.
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Matt Stowers
Warehouse, Tulsa Office

Robert Gaines
Warehouse, Tulsa Office

Armando Cisternas
Warehouse, Santiago Office

Claudio Muñoz
Warehouse, Santiago Office
Hello, I am Claudio Muñoz and I am 34 yeas old. I have joined Great Plains in December 2020. My favorite hobbies are walking and playing soccer.

Francisco Sepúlveda S.
Sales Manager, Santiago Office

Leslie Martinez
Accounting Analyst, Santiago Office

Maura Vij
General Manager, Nelson Office
As a member of the New Zealand sales team, I enjoy interacting with customers of many different backgrounds and finding out more about their specific needs so I can come up with the best possible option. I am fortunate to have been around the industry for about 10 years.
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Terri Walker
Receptionist, Accounting, Tulsa Office

Bic Huang
Accounts, Nelson Office
I’m the accountant and shipping coordinator for the Nelson office. I enjoy working with the different nationalities in GPSS.
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Daisy Wong
General Manager, Shanghai Office

Gil Duron
Sales Manager, Tulsa Office
I was born in Orange, CA and raised in Tulsa, OK. I joined Great Plains in 2000 and started my journey in the stainless piping product business. I was fortunate to work internationally with Great Plains Stainless in 2007 for a time gaining a global perspective of the industry. I have visited several mills in the metal industry, and I enjoy continuously learning about products and metal market trends. I am pleased to help customers with their stainless piping needs. My favorite personal activities are running, watching sports, playing musical instruments, and reading books. I’m happily married with three boys and reside in Tulsa, OK
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Linden Brown
Sales, Tulsa Office

Mauricio Ferrada Bustos
Sales, Santiago Office

Brandon Framel
Warehouse Supervisor, Tulsa Office

Debbie Cole
CFO, Tulsa Office
My husband & I enjoy traveling and watching movies. In my free time, I love cooking, playing games and spending time with my husband and family.

Guillermo Obejero
Administrative and Financial Manager, Santiago Office

Lori Fuller
Shipping, Tulsa Office

Nick Belcher
Sales, Tulsa Office

Tom Gibbons
Sales, Tulsa Office