Post-IPO Senior Accounting Manager — Lead Close & SOX

BillionToOne Inc.; Menlo Park (CA); On-site; USD 174,000 - 207,000; Full time

Benefits offered by this job

Free daily on-site lunches

Health & dental benefits

401(k) match

Parental leave

On-site gym & EV charging

Job summary

BillionToOne Inc. is seeking a Senior Accounting Manager to oversee accounting operations in its first full year post-IPO. You will lead the GL team, manage month-end close, ensure SOX controls, and coordinate with external auditors while driving process improvements.

This role reports to the Director of Accounting and requires a CPA with deep US GAAP fluency and Big 4 experience is a plus. Responsibilities include managing the close calendar in FloQast, overseeing NetSuite-based GL, and

Qualifications

• CPA required with deep US GAAP fluency.
• Big 4 or national audit firm experience is a plus.
• Hands-on SOX 404(b) experience as a control owner including IPE and remediation.

Responsibilities

• Manage month-end and quarter-end close with gated calendar and logs.
• Oversee general ledger accuracy and balance sheet reconciliations.
• Own SOX 404(b) controls, narratives, and documentation; coordinate with partners.
• Lead external audit coordination, PBC requests and fieldwork.
• Own monthly management reporting: flux analysis by function and cost-per-test analytics.
• Lead and develop GL, AP accountants; supervise payroll & fixed assets.
• Apply technical accounting: ASC 842, ASC 730 R&D, health plan IBNR reserves.
• Drive process improvements to speed and compliance.
• Provide governance of procure-to-pay controls with Supply Chain.

Skills

Excel proficiency

Internal controls

Cross-functional collaboration

Financial reporting

Education

Bachelor's degree in Accounting/Finance or related field

CPA

Tools

NetSuite

FloQast

Expensify

Workiva

Job description

BillionToOne Inc. is seeking a Senior Accounting Manager to oversee accounting operations in its first full year post-IPO. You will lead the GL team, manage month-end close, ensure SOX controls, and coordinate with external auditors while driving process improvements.

This role reports to the Director of Accounting and requires a CPA with deep US GAAP fluency and Big 4 experience is a plus. Responsibilities include managing the close calendar in FloQast, overseeing NetSuite-based GL, and