Senior Accountant

Onco360•Chicago, IL

About The Position

Onco360 is seeking a highly analytical, detail-oriented Senior Accountant to ensure the accuracy of financial transactions related to its 340B program. The role involves analyzing data, identifying issues, making recommendations, recording and reviewing claim-level transactions, reconciling large datasets, researching and resolving discrepancies, and providing quality control over 340B reporting in Excel. The position may be remote for the right candidate with previous 340B experience. The Senior Accountant prepares accounting entries and monthly reconciliations, tracks inventory receivables and invoices, analyzes monthly results, and communicates with the Accounting Manager and internal and external partners. The role also contributes to internal controls and process improvements and supports annual audits. Onco360 describes its work as serving oncology and hematology physicians, patients, payers, and manufacturers, with a mission to improve the lives of people battling cancer and rare diseases.

Requirements

  • Degree in accounting or commensurate experience.
  • At least 3 years of experience in accounting, month-end close, and data reconciliation.
  • Advanced Excel skills.
  • Experience with manual reconciliations of large datasets.
  • High attention to detail.
  • Excellent organizational and communication skills.
  • Strong analytical and problem-solving skills.
  • Self-starter with initiative.
  • Strong internal customer focus and interpersonal skills.
  • Dependable and organized.

Nice To Haves

  • Previous 340B experience; required for consideration for the stated remote-work possibility.
  • Experience with medical or pharmacy claim data.
  • Experience with inventory reporting.

Responsibilities

  • Retrieve claim-level data from multiple third-party administrators, review it for accuracy, and reconcile it with internal data in Excel reports.
  • Calculate and record accounting entries for 340B dispense fee revenue, cost of goods sold, inventory receivables, accruals, and payables based on contractual obligations and current pricing files.
  • Consolidate large Excel datasets for analysis, reporting, and reconciliation to the general ledger.
  • Track and update inventory receivable details for monthly claims and replenishments by NDC and entity, and prepare monthly inventory receivable aging reports in Excel.
  • Track and process invoices, verify claim-level support and calculations against contractual obligations, and ensure offsetting inventory receivables are matched.
  • Investigate and resolve variances in 340B claim-level transactions between external reports and internal Excel files.
  • Analyze and summarize monthly results and communicate them to the Accounting Manager.
  • Prepare monthly balance-sheet account reconciliations.
  • Communicate with internal and external partners in non-financial roles to resolve 340B issues.
  • Participate in developing and documenting policies and procedures to maintain and strengthen internal controls.
  • Identify and assist with process improvement opportunities.
  • Assist outside auditors by gathering account information and documents for the annual audit.

Benefits

  • Medical insurance
  • Dental insurance
  • Vision insurance
  • 401(k) with employer match
  • Paid time off
  • Paid holidays
  • Quarterly incentive bonus
  • Tuition reimbursement
  • Company-paid life insurance
  • Company-paid short-term disability
  • Company-paid long-term disability
  • Opportunities for professional and personal growth
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service