About Us

Our Story

How It All Began

Maui Oma Coffee Roasting Company was founded by David Gridley in 1993. Maui Oma was established to create individual coffee programs for restaurants and cafes throughout Hawaii with the emphasis being to create single origin varietals using 100% Hawaiian coffees as well as developing proprietary blends for Hawaii’s finest chefs.

In 2018, David retired and to this day, Maui Oma considers itself a small to medium size roasting company paying attention to quality and freshness in every step. With over 20 years of sourcing quality beans from around the world and in Hawaii we take great pride to ensure a great cup of coffee.

Our Difference


All our coffee is roasted and blended to order. Coffee is never sitting around for months before you receive it.


We only use high grades of Arabica coffees

Small Batch Roasting

To better control the quality and development of essential coffee oils (no quench roasting)

Customized Blends

We work with our customers to create customized blends to match their personal taste.

Coffee Knowledge

Over 25 years of experience in the Hawaii Coffee industry in all phases of coffee, growing, processing, sourcing, roasting, packaging, and equipment.

Equipment and Servicing

Provide a team of support by servicing all that we sell or provide. We service everything we sell, 7 days a week, every week.


We provide on-site staff training covering coffee information, proper preparation and servicing and maintenance of your equipment.

Meet The Team


Randy moved to Maui from Virginia Beach in 2005 with 3 suit cases and enough cash for 1 month and a rental car… He saw an ad posted which read:
Do you know electricity?
Do you know plumbing?
Do you like coffee?
He responded with “2 out of 3 ain’t bad” and started working at Maui Oma shortly thereafter. He’s come to know coffee well as he was already an experienced electrician and plumber. Over the last 13 years, Randy has dedicated himself to the food service industry in Hawaii and goes out of his way to ensure Maui Oma’s customers are satisfied. He’s learned to match the needs of our customers to their equipment by working with them side by side. His mission is to keep your equipment in good working order so you can focus on what you do best.

Randy Bentley

Service Manager


The saying goes, the Devils’ in the details…. Well here at Maui Oma, our Office Manager, Wade is into the details! He’s been with Maui Oma since 2015 starting out as our Delivery Driver; however, he had a keen sense for numbers and customer service. He’s been at the numbers game for the last 3 years and enjoys working on the production line and always finding ways to help our customers serve the best coffee possible while supporting their growth and development. If you become an Oma Customer, chances are you’ll be talking to Wade frequently.

Wade Parker

Office Manager


Keturah took her first job in coffee before she had even tried a sip. Luckily, she started as a barista at a small cafe with a taste for the finer things: freshly roasted single origin coffees and unique blends. About a year in, she ditched the French Vanilla creamer and hasn’t looked back.

Keturah brings her ten years of experience in brewing, roasting and tasting to the Maui Oma team and more importantly sharing her knowledge on the road. You’ll see her out at restaurants and cafes training Oma customers in proper preparation, service, and presentation and at our own cupping table introducing you to unique blends crafted for your establishment.

Keturah Schmidt

Coffee Education Specialist and Sales Manager

Dedicated, friendly, energetic and compassionate. That’s what they say about people from Wisconsin and it couldn’t be truer about our Service Technician and Driver, Alvin who is originally from Wisconsin. He’s traveled abroad and found he enjoyed the tropical lifestyle of Maui the most so he moved to Maui in 1999. He answered a job posting for Maui Oma in 2017 and has been dedicated to our customers ever since. Alvin ensures all orders are correct (he’s our QC guy) before delivering and he also services equipment in the field when needed. If you’re on Maui, you’ll be sure to see him on the road.

Alvin Trapp

Delivery Driver & Customer Service Tech

Jessica’s background is in the hospitality and medical fields. She provides a warm, friendly feeling at the Oma worksite and brings organizational skills to the team.
In the summer of 2016, Jessica found her way into Agriculture on Maui and starting working on an Upcountry Maui farm as a Farm Technician and she was also the Tour Supervisor. At the farm, she recognized her passion for coffee and has become a good steward of the land. As Maui Oma continued to grow its customer base, we were in need of a production roaster, so in 2017, Jessica was hired not only to roast, but also to learn the art of blending and taste profiling. Jessica also enjoys working with our smaller Maui farmers to provide them with custom roasts for their estates.

Jessica Portenier

Production Roaster and Coffee Blender

M.J. has been hands on with coffee on Maui since 2003. He’s a grower, processor, home roaster (on his Royal No. 2 1905 Coffee Roaster) and blender. He’s been actively engaged in the Maui coffee community over the past 14 years and enjoys all things Maui. In 2014, he became one of Maui Oma’s Coffee Roasters and held that position until 2017 until he decided to focus on his home coffee production. We welcomed him back to Maui Oma in the Summer of 2019 to help us facilitate the production line. M.J. is a member of Maui Search and Rescue and previous board member of the Maui Coffee Association.

M.J. Partin

Production Assistant and Coffee Blender

The Owners of Maui Oma Coffee Roasting Company

Grant is the President of Maui Oma and the sole owner of Kumu Farms. He has farmed lands in Hawaii for 38 years and has established a solid business model on both Molokai and Maui islands. He works with small and large grocers and distributors as well as direct sales to the public through the Kumu Farms Market stands. He has a passion and interest in farming; however, his business background provides stability and direction to Maui Oma by keeping the business model on track and on solid grounds.

Grant Schule

President and CFO

Maria’s background is diverse and she’s been in the Hawaii coffee industry since 1998. Her segway into the coffee industry was through Ag-Tourism at Coffees of Hawaii on the island of Molokai. Over the years, she’s worn many hats, from tourism, retailing, café management, farm management, coffee processing and roasting and production. She also established the Mill House Roasting Company at the Maui Tropical Plantation and worked with the team at the Plantation to develop the Mill House Restaurant. She brings a team approach to Maui Oma and you can always find her at the Roastery doing what she loves…. sourcing coffees from Hawaii and around the world. She carefully chooses coffees with a variety of flavor profiles and high cupping scores to achieve not only quality, but to also draw from a diverse inventory.

Maria Holmes

V.P.& Director of Sales and Operations

Hours of Operation

7:00am – 3:00pm

We are closed


Maui Oma Coffee Roasting Co.

296 Alamaha St, Kahului, HI 96732

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Don't be shy. Let us know if you have any questions!