Senior Accountant

Location: Boston (Hybrid)

Organization Summary:

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 MassHealth 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.

Job Summary:

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

Responsibilities:

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 and approve staff-prepared invoices to ensure subject matter expert instructions, rate changes, and contract terms are accurately applied
• Leverage technology to manage AP and AR; ensure changes (e.g., escalators, adjustments) are documented and reflected promptly
• Prevent downstream corrections by identifying issues before invoices are sent out

Payer Files & Data Reconciliation

• Review payer data (e.g., Medicaid, Blue Cross) for completeness, accuracy, and alignment with expected norms before loading into financial models
• Identify discrepancies, investigate issues, and escalate as appropriate

Quality Control & Process Improvement

• Implement and enforce QC checklists for AP, invoicing, payer files, and journal entries
• Conduct periodic reviews of staff work to ensure policies and procedures are followed
• Recommend and implement process improvements for greater efficiency and accuracy

Team Support & Leadership

• Mentor and support staff accountants in developing technical accuracy and attention to detail
• Act as a liaison with SMEs, ensuring instructions are documented, confirmed, and executed in a timely manner
• Support audit preparation and respond to auditor requests
• Provide coverage for finance leadership as needed

Required Skills:

• Detail Orientation: Ability to identify and correct errors; high level of accuracy in all work
• Listening & Communication: Demonstrated ability to capture instructions, confirm understanding, and follow through
• Analytical Skills: Strong problem-solving and variance analysis capabilities
• Process Discipline: Experience creating, implementing, and enforcing structured workflows and checklists
• Technology Proficiency: Comfortable with accounting software, Excel (lookups, pivots), and data files from external sources
• Time Management: Ability to prioritize multiple responsibilities and meet deadlines in a fast-paced environment
• Collaboration: Strong interpersonal skills to work with SMEs, finance leadership, and accounting staff.
• Professional Accountability: Ownership for both the quality of their own work and the oversight of staff- prepared work

Desired Other Skills:

• Advanced Excel & fiscal data analysis: comfort with pivot tables, lookups and error checks to quickly analyze payer files and/or reconcile large datasets
• Automation mindset: ability to streamline repetitive tasks (using excel or another tool) to reduce manual errors
• Documentation discipline: ability to create SOPs/checklist and keep them current
• Nonprofit/healthcare familiarity
• Experience with anti-racism activities, and/or lived experience with racism is highly preferred Qualifications:
• Bachelor’s degree (BA or BS), focus in Accounting, Finance, or related field preferred
• 3–5 years of progressive accounting experience, ideally in a nonprofit, healthcare, or payer-provider setting
• Strong knowledge of GAAP and nonprofit accounting standards
• Experience with monthly close, reconciliations, journal entries, and invoicing
• Prior experience reviewing and improving accounting processes
• ADP Payroll software experience preferred but not required

** In compliance with Infection Control practices per Mass.gov recommendations, we require all employees to be vaccinated consistent with applicable law. **