Stephani Sivertsen
Stephani Sivertsen is an accounting professional based in Great Falls, Montana, dedicated to helping clients and team members navigate financial challenges with clarity and confidence. She >>
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Kylie Nichols
“Your life does not get better by chance; it gets better by change.” – Jim Rohn. Kylie was born in Fairbanks, Alaska, and has lived in >>
Melissa Mahoney
I bring a diverse background and a strong work ethic to every role I take on. Raised in the Pacific Northwest, I experienced life in both >>
Marcy Taylor
Originally from Goldsboro, North Carolina, Marcy brings a personalized and relationship-focused approach to her work as an accountant. She is passionate about understanding each client’s unique >>
Melanie Blake, CPS
Melanie has a passion for numbers, problem solving and working with people. With over 17 years of experience in Payroll, Accounting, Office Management, Human Resources and >>
Nick Diekhans, CPA
Nick is dedicated to offering personalized audit services at JCCS by getting to know clients and focusing on improving their audit experience through efficiency, attention to >>
Jacob Mcmurtry
We are not trying to be your accountant for this year, we are trying to help you succeed for decades. This was Jacob’s first tax season >>
Joyanna Winterrowd
“The way I see it, if you want the rainbow, you gotta put up with the rain.” – Dolly Parton Life is not rainbows and unicorns >>
Rebekah Webb
Rebekah Webb is a dedicated tax accountant known for her exceptional ability to help clients navigate the complexities of tax regulations with ease and confidence. She >>
Tasia Knight-Holmes
Tasia completed her undergrad in Accounting from Western Governors University in 2021. She has 5 years of experience in bookkeeping and payroll services as an independent >>
Heather Hart, CPA
Heather grew up in Great Falls and was honorably discharged from the Air National Guard. She enjoys camping and reading along with spending time with her >>
Tiffany Ridenour, CPA
Tiffany Ridenour was born and raised in the beautiful state of Montana that she feels blessed to call home. Tiffany enjoys all that the outdoors have >>
LeeZann Johnson
LeeZann was born in Utah and moved to Montana at the age of 8, and grew up in the Columbia Falls, MT area. She came to >>
Bonnie Robertson, CPA
Bonnie loves the challenge of tax; tax laws are always changing and there is never a dull moment. Each tax return is a big math problem >>
Joe Legg
A strict work ethic and a love of family and music keeps Joe Legg balanced and happy. A Great Falls native and Marine Corps veteran, Joe >>
Amanda L. Manuel, CPA
Amanda Manuel firmly believes in helping others to be the best version of themselves. Whether in the gym, on the trail, or in business and industry, >>
Karen Gessaman, CPA
A native of Great Falls, Karen Gessaman enjoys reading, gardening, cross-country skiing, bicycling, playing board games and spending time with her family. Throughout her years as >>
Dana Sondergaard, CPA
With some 20 years of experience in corporate financial management, JCCS Chief Financial Officer Dana Sondergaard has consistently focused on ensuring not only the sustainability, but >>
Lindsey Nichols, CPA, QKC, QKA
After graduating from college, Montana native Lindsey Nichols took a job in Portland, Oregon, with one of the country’s largest accounting firms. After a few years >>
Sam Fallang, CPA
With more than 20 years of experience serving clients across a wide range of industries, organizational structures, and professional backgrounds, I have developed a deep understanding >>
Lizzie Donnelly, QKA
A native of Montana, Lizzie Donnelly enjoys spending time outside and preferably away from the city. Lizzie is also an avid CrossFit athlete – so much >>
Kelby G. Donnelly, CPA
Throughout her considerable experience as an accounting professional, Kelby Donnelly has focused on building strong, long-term relationships with clients while making full use of the many >>
Mandi Boutilier, CPA
Amanda Boutilier, or Mandi as most call her, has a passion to connect with other people and to help them succeed at their goals and purposes. >>
Alexis Williams, QKA
Originally from Redding, California, Alexis Williams has called Montana home for the last 18 years. She has six siblings and tries to spend as much time >>
Jerry L. Lehman, CPA
With over 40 years of experience helping small-business owners solve varying financial and regulatory challenges, Jerry Lehman knows that almost always the most-meaningful solution is based on >>
