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Senior Accountant

Oak Services Group, Inc.
Marlborough, MA Full Time
POSTED ON 4/22/2026
AVAILABLE BEFORE 8/19/2026

Role Overview

This is a full-time Hybrid Senior Accountant position, reporting to a Senior Accounting Manager/ Controller. Senior Accountants are responsible for leading client engagements and delivering accounting expertise on a managed services / fractional services basis to Oak Services Group’s clients.


This Senior Accountant position has a primary responsibility for serving as a subject matter expert and delivering services for all parts of the accounting process: bookkeeping, journal entries, accounts receivable, accounts payable, revenue recognition, reconciliations, close processes, financial statement creation, analysis of KPIs and delivery of insights and guidance coming from the data. This role is responsible for ensuring that our clients receive accurate financial reporting, have robust internal controls, and have the right tools in place to support their growth and expansion.


Expected Compensation Range: $90,000-100,000


Key Areas of Responsibility

  • Serve as an accounting subject matter expert for our clients
  • Function as the team lead, directly responsible for the close processes and able to deliver accounting services across the full accounting life cycle.
  • Design and build internal processes to standardize the client’s experience and mitigate execution risk.
  • Maintain the integrity of financial records for multiple client organizations
  • Develop, implement, and ensure compliance of accrual processes to continuously improve the accuracy of in-period reporting
  • Maintain a high level of communication internally and externally.


Qualifications

Our ideal candidate will have the following qualifications:

  • Bachelor’s degree in Accounting or Finance; Master’s degree, CPA, and/or other credentials a plus (MBA, CFA, CMA, others)
  • 6 years of progressive accounting experience, with a mix of public accounting and in-house leadership roles
  • Deep technical accounting expertise in U.S. GAAP, with an experience base that includes senior roles at Big Four or similar public/private accounting firms.
  • To be successful a candidate will have:
  • A bias for action and an ownership mentality, with a reputation for rolling up your sleeves, working hard, and driving results in fast-paced, ambiguous environments.
  • Advanced proficiency in Excel and accounting systems; QuickBooks and NetSuite experience preferred
  • Excellent communication skills and ability to work cross-functionally with stakeholders at all levels.
  • Strong presentation skills, able to prepare materials for the Board and audit / finance committees, present on top accounting judgments, control environment status, and high-risk issues.
  • Discipline and able to ensure rigorous confidentiality and integrity of financial data, and maintain the highest standards of ethics, judgment, and compliance.


Oak Services Group Offers:

A unique startup company run and funded and operated by a successful entrepreneur

(i.e. Not beholden to outside venture money or expectations)

  • A company with a well-established Board of Advisors with ties throughout the local business community.
  • A collegial, professional managed services/fractional services company culture.
  • [We are not Big Four and do not have an up-or-out policy]
  • A remote, cloud-based, work environment as a general default. We will be in person when requested by clients or for select company/team meetings.
  • Benefits will include: medical, dental, vision, LT Disability, Group Life.
  • We anticipate offering a 401k plan and will start as soon as the company is eligible with a group plan with no match before building in a match over time.


Disclaimer: This job description may not be inclusive of all assigned duties, responsibilities, or aspects of the job described, and may be amended at anytime at the sole discretion of the Employer.


About Oak Services Group, Inc. (a Delaware Corporation):


Oak Services Group is a startup company, providing managed services/fractional work in the accounting/controllership/CFO space. We are actively looking for driven individuals to join our experienced early-stage team.


* For many roles and positions, unless stated as full-time-only position, Oak Services Group is happy to arrange part-time/hourly W2-employee relationships and views this flexibility as important for many of our staff. Please contact us to discuss your preferred relationship.

If interested, please feel free to submit via LinkedIn and./or mail us directly at:

careers@oakservicesgroup.com. Please include a cover letter and resume.


Oak Services Group is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

Salary : $90,000 - $100,000

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