Senior Accounting Manager
About The Position
The Senior Accounting Manager will oversee accounting operations at BillionToOne during its first full year of SOX 404(b) compliance. Reporting to the Director of Accounting, the role manages the month-end close, maintains the integrity of the general ledger, and serves as a named control owner within the SOX framework. The manager leads a team of general ledger and accounts payable accountants, acts as a primary day-to-day contact for external auditors, and owns the monthly management reporting package, including flux analysis and cost-per-test economics. The role is suited to an experienced accounting leader in a fast-paced, post-IPO environment who can drive operational and process improvements. BillionToOne is a publicly traded molecular diagnostics company focused on making accurate diagnostic tests accessible. Its products support prenatal screening and cancer diagnostics, using its QCT molecular counting technology. The company is headquartered in Menlo Park, with facilities in Union City, California, and a lab planned to open in Austin, Texas, in 2027.
Requirements
- 8–10+ years of progressive accounting experience.
- At least 3 years managing the close and leading a team of direct reports.
- CPA required, with deep US GAAP fluency.
- Hands-on SOX 404(b) experience as a control owner, including familiarity with control narratives in functional areas beyond accounting and reporting, IPE requirements, and deficiency remediation.
- Strong NetSuite experience, including the ability to query the system directly using saved searches.
- Advanced Excel and analytical abilities.
- Excellent communication and interpersonal skills, with the ability to collaborate across departments.
- Bachelor’s degree in Accounting, Finance, or a related field.
Nice To Haves
- Post-IPO experience strongly preferred.
- Experience in life sciences, diagnostics, or another high-growth regulated industry is a plus.
- Big 4 or national audit firm experience is a plus.
- Experience with FloQast, Expensify, and Workiva is a plus.
- SuiteQL experience is ideal.
Responsibilities
- Manage month-end and quarter-end close on a dependency-gated calendar in FloQast, including the journal entry control log, reconciliation sign-offs, and close checklist; shorten the close timeline while improving quality and audit readiness.
- Own general ledger accuracy and integrity in NetSuite, review recurring and non-standard journal entries, oversee balance sheet reconciliations across the account population, and resolve posting and configuration issues.
- Serve as a named owner and reviewer of financial reporting, general ledger, and close-cycle SOX controls; maintain control narratives and supporting documentation, ensure IPE completeness and accuracy, remediate deficiencies, and coordinate deliverables with business partners.
- Serve as a day-to-day contact for the external auditor and consulting advisors; manage PBC requests, walkthrough support, sample pulls, and interim and year-end fieldwork.
- Own the monthly management reporting package, including month-over-month flux analysis by functional area, cost-per-test analytics for prenatal and oncology products, and a management summary for the CFO and leadership team.
- Lead, mentor, and develop GL and AP accountants across general ledger, fixed assets, accounts payable, and payroll; set expectations, establish review discipline, and develop the team's technical capabilities.
- Operationalize technical accounting conclusions related to ASC 842 lease accounting, including embedded lease assessments; ASC 730 R&D cost treatment; and self-funded health plan IBNR reserves.
- Improve close and accounting processes to increase speed and efficiency while maintaining operational compliance.
- Provide senior oversight of the vendor master and disbursement control environment, partnering with Supply Chain on procurement governance and support across the AP and payment cycle.
Benefits
- Multiple medical benefit options; employee premiums are paid 100% for select plans, and dependents are covered up to 80%.
- Family Bonding Leave for eligible employees: 16 weeks at 100% pay.
- Supplemental fertility benefits coverage.
- Retirement savings program with a 4% company match.
- Paid time off increases with tenure.
- Latest hardware, including a laptop, lab equipment, and facilities.
- Free daily on-site lunches.
- On-campus amenities including a state-of-the-art gym and restaurant.
- Free on-site EV charging.
- Annual bonus eligibility.
- New-hire equity grant of up to $110,000 at grant value, vesting over four years, plus annual equity refresh grants equal in value to the new-hire grant.
- Competitive medical and dental coverage.
- Professional growth opportunities.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
