Senior Accountant

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Full Time Boston, MA, US

3 days ago Requisition

Salary Range: $91,042.00 To $ Annually

Community Care Cooperative (C3) is a 501(c)(3) non-profit multi-service organization governed by Federally Qualified Health Centers (FQHCs). Our mission is to leverage the collective strengths of FQHCs to improve the health and wellness of the people we serve. We fulfill two primary business functions for the FQHCs we work with. First, we are an FQHC-led accountable care organization (ACO); second, we are a Management Services Organization (MSO) for FQHCs.

As an ACO, we negotiate value-based payor contracts on behalf of our FQHCs, hold and operate those contracts (including fulfilling many compliance, financial management, and population health management functions), and maximize the return to FQHCs of any incentive dollars earned. We are proud to be the market leader in the Mass Health ACO Program. We are the largest Medicaid ACO in Massachusetts, and we operate a variety of business offerings nationwide.

As an MSO, we (along with our subsidiary companies, which are also FQHC-led non-profits) provide several financial, operational, and technological services to groups of FQHCs. These services include Epic EHR licensing and implementation; pharmacy operations consulting as well as the building and direct operation of on-site retail pharmacies; billing and credentialing; employer-sponsored insurance; and others.

We are a fast-growing, dynamic organization developing new partnerships and programs to improve the health of members and communities, and to strengthen our health center partners.

The Senior Accountant is responsible for overseeing the accuracy and completeness of accounting processes, including journal entries, accounts payable, invoicing, and payer‑file reconciliations. This role provides quality control across monthly close activities, ensures compliance with organizational policies, and partners with internal stakeholders to confirm instructions are acted on promptly. The Senior Accountant will serve as a process lead, identifying gaps, updating procedures, and mentoring accounting staff to ensure consistent, detail-oriented execution

Payroll

• Process full-cycle payroll for a multi-state workforce (350 employees across 40+ states, mix of hourly and salary), ensuring accuracy, timeliness, and compliance
• Administer payroll primarily within the ADP system, including ongoing collaboration with ADP’s internal project and support team
• Maintain and audit payroll records, ensuring compliance with federal, state, and local regulations
• Handle payroll-related tax filings, deductions, garnishments, and benefit integrations
• Partner closely with HR to support onboarding, employee data changes, and offboarding processes
• Assist in the implementation and optimization of ADP payroll system
• Prepare payroll reports and support Finance with reconciliations, audits, and month-end close activities
• Respond to employee payroll inquiries and resolve discrepancies in a timely manner
• Ensure compliance with nonprofit-specific benefits, including 403(b) retirement plan contributions and reporting

Monthly Close & Financial Integrity

• Prepare, review and approve journal entries and supporting documentation
• Ensure monthly close activities are completed accurately and on schedule
• Perform variance analysis and identify unusual trends or discrepancies
• Ensure reconciliations are complete, accurate and reviewed

Accounts Payable & Invoicing Oversight

• Review AP processing to ensure invoices are coded, approved, and entered timely
• Review…