About Us

I started my career with a Big Four public accounting firm, working with entrepreneurial and non-profit-based organizations, and it was during these years that I realized that while I loved the work, my true life goal was to follow my family’s tradition of owning and operating my own business. After fulfilling this goal in 2012, I vowed to build an accounting practice based on the premise that I’d treat clients just as I do my friends and family. I pride myself as a hard-worker who learned that trait through my upbringing and working in my family furniture stores through my teenage years.

My family and I now live on Capitol Hill, where I enjoy the city’s vibe and am excited to see how small businesses continue to reshape the landscape. We’re dedicated to Washington D.C. and have chosen to raise our family here. No matter where you’re located, we consider you a part of our community and understand that your life goals become ours.

Prior to starting the J.S. Miller Group, I:

• Was an Auditor with Ernst & Young and KPMG.
• Worked as in-house CPA for Marriott International’s Internal Audit and SEC Reporting Group.
• Held the position of CFO at Universal Air Travel Plan, a global financial services firm, responsible for all financial and risk management.
• Earned an MBA from The George Washington University.

Then in December 2012, I started the J.S. Miller Group.

Rejoined J.S. Miller Group in 2022 and has twenty years of experience providing services to a variety of clients including start-up, not-for-profit, and government contracting businesses. His experience includes auditability assessments, systems analysis and assessments, data analysis, and complex financial modeling. In addition to day-to-day accounting duties, Mr. Simcic has worked with various accounting, database, and forecasting software, spearheading accounting system builds and integrations to maximize efficiency and effectiveness.

Mr. Simcic is a graduate of Hampden-Sydney College, where he earned a bachelor’s degree in Managerial Economics. Mr. Simcic’s ongoing education includes a master’s Certificate in Accounting and Information Systems. He is currently studying blockchain technology, artificial intelligence, and machine learning.

Tarsila Gomes is a staff accountant with JSMG. She is responsible for ensuring the consistency and veracity of the accounting information of some small and medium-sized companies.

Tarsila spent more than 15 years working with Accounting. Before joining JSMG Tarsila has worked in Brazil for 2 multinationals. She has experience in the accounting closing process, strong performance in improving and automating processes, providing financial information, accounting reports through analysis, and account support to other areas.

She has a bachelor’s degree in accounting and an MBA in Finance and Controllership Management.

Tarsila is a very committed, and fast learner, with professional discipline and organization, and great teamwork.

Glenn R. Frank, III joined our team in February of 2023 as a senior tax manager. Glenn is a results-oriented accounting professional with more than 30 years of experience in entrepreneurial business ownership, public accounting, and taxation. My experience includes providing CFO services, business consulting, government contracting, non-profit accounting with a special focus on business growth.

My focus is on the long-term profitability and success of my business and individual clients. My goal is to take an understanding of complex accounting and tax solutions and present them in a way that makes them simplified and very practical.

I am a member of the American Institute of Certified Public Accountants (AICPA), Maryland Association of Certified Public Accountants (MACPA).

Glenn grew up in Hollywood, Maryland, and lives in Hughesville, Maryland. Glenn is an active member of his community. A past President of the Leonardtown Rotary, and Multiple Paul Harris Fellow award recipient; Active participant/presenter with the Non-Profit Institute (College of Southern Maryland); Graduate of the Leadership of Southern Maryland Program (Class of 2013 – It’s Genetic); Member local Business Association; former Board member of the Charles County Chamber of Commerce. former Board member of Ducks unlimited, Charles County; Member of the Charles County Technology Council; Member of the St. Mary’s Chamber of Commerce (and past presenter for Health Care reform symposium); Member of the Calvert County Chamber of Commerce.

Sheila Nicholson is a senior accountant at JSMG, who is responsible for managing a portfolio of small to medium-sized companies. She has comprehensive knowledge of accounting principles, A/P, A/R, general ledger postings, invoicing, bank reconciliation, and reporting. Before joining JSMG, Sheila worked in Brazil in a medium-sized accounting firm, where she was responsible for managing 10-12 companies, providing tax and bookkeeping services. Sheila has a bachelor’s degree in accounting and an MBA degree. During these years of experience, Sheila developed a strong history of effective time management by prioritizing and managing multiple assignments of varying complexity within tight deadlines.

Stephanie Sparks is a young accountant with a passion for numbers and a strong work ethic. She graduated from the College of Coastal Georgia with a bachelor’s degree in accounting and finance in 2021 and has already made a name for herself in the industry. Stephanie has quickly gained valuable experience working with the J.S. Miller Group, where she has been involved in a wide range of accounting and financial reporting projects.

Jennifer Withers is a bookkeeper and controller who works with small businesses and non-profits to manage their financial well-being and planning. Prior to her current role with JSMG, Jennifer spent more than a decade overseeing operations and finance for a fast-growing government contractor where she was responsible for developing and analyzing budgets and cost controls, providing timely and frequent financial information that supported corporate goals and objectives. She has comprehensive knowledge of accounting principles, A/P, A/R, payroll, general ledger postings, invoicing, and compliance guidelines. During her years with JSMG (2017), she has developed and delivered monthly, quarterly, and annual Profit and Loss statements and Balance Sheets for management of a variety of clients within strict deadlines. In her personal time, she also provides volunteer bookkeeping and financial management services for some local non-profits in her community.

Jennifer is certified in QuickBooks and holds a BA from Dartmouth College.