Associate Director, Finance Systems - IT

BillionToOne • Menlo Park, CA

2d • Onsite

About The Position

BillionToOne is seeking an Associate Director of Finance Systems - IT to serve as the strategic and operational leader for all financial technology platforms across our organization. This is a senior individual contributor and people-leadership role that sits at the intersection of finance, compliance, and technology—responsible for ensuring our systems infrastructure is scalable, audit-ready, and aligned with the demands of a public company operating under SOX Section 404(b). You will lead a team and act as the primary owner of our financial systems strategy, partnering closely with Accounting, Legal, HR, Billing, and IT to design and maintain a controlled environment that meets Big 4 audit scrutiny. Your deep experience with 404(b) compliance, ERP administration, and cross-functional system integrations will be foundational as BillionToOne continues to scale as a public company.

Requirements

• 4+ years of experience working within a SOX Section 404(b)-compliant public company environment, with direct responsibility for IT General Controls or finance systems compliance.
• Demonstrated experience working at or directly with Big 4 audit firms (Deloitte, PwC, EY, or KPMG) in a public company context—including leading control walkthroughs, providing audit evidence, and managing deliverable timelines.
• 6+ years of hands-on NetSuite and other Finance system administration experience, including complex configurations, workflow automation, role design, and integration management.
• Deep understanding of SOX ITGC domains: logical access, change management, computer operations, and their application across financially relevant systems.
• Proven track record leading end-to-end finance systems implementations and technology projects in a public company setting.
• Bachelor’s degree in Accounting, Finance, Information Systems, Computer Science, or a related field.
• Strong command of financial operations, close processes, internal controls frameworks (COSO, COBIT), and audit methodologies.
• Experience with SOX-relevant systems including HRIS, equity management platforms, and related revenue recognition systems.
• Exceptional written and verbal communication skills; ability to present complex controls and systems topics clearly to executive audiences and external auditors.
• Proven ability to lead, develop, and retain a team in a fast-paced, high-growth environment.
• Highly detail-oriented with a track record of delivering accurate, audit-quality documentation.

Nice To Haves

• CPA, CISA, or relevant systems/audit certification.
• Experience managing a transition from 404(a) to 404(b) compliance, including readiness assessments and external auditor onboarding.
• Familiarity with data integration and middleware tools (e.g., MuleSoft, Boomi, Workato).
• Experience with ADP Workforce Now or other enterprise HRIS platforms.
• Experience in a diagnostics, biotech, or healthcare company navigating financial and regulatory compliance.

Responsibilities

• Administer and maintain the company's IT General Controls (ITGCs) across in scope financial systems, implementing the ITGC framework, including logical access, change management, and computer operations controls across all in-scope financial systems.
• Lead all systems-related workstreams in support of the annual SOX 404(b) audit, coordinating directly with external auditors.
• Design and maintain control documentation, including risk and control matrices, narratives, and process flowcharts for all financially relevant systems.
• Implement remediation actions for IT control gaps and deficiencies as identified and directed by internal audit, and support internal audit's pre-fieldwork readiness process.
• Support continuous improvement initiatives within the IT controls environment, escalating proposed changes to finance and accounting leadership for approval.
• Serve as the senior system owner for NetSuite, overseeing system architecture, configurations, workflows, roles, permissions, and release management.
• Define and execute the multi-year financial systems roadmap, identifying technology investments that support scalability, compliance, and operational efficiency.
• Oversee evaluation, selection, and implementation of new financial technology platforms including revenue management, payment systems, FP&A tools, and HRIS integrations.
• Establish and enforce change management policies, including change request processes, UAT protocols, and go-live approval gates.
• Drive automation and process optimization initiatives across the finance and supply chain systems landscape.
• Act as the strategic liaison between Finance, Accounting, HR, Legal and IT, ensuring system design and project delivery align with operational needs and compliance requirements.
• Lead and mentor a team of Finance Systems analysts and administrators, setting clear goals, priorities, and professional development plans.
• Develop and maintain executive-level reporting on system health, project status, and risk exposure (systems availability, integration failures, project delivery).
• Manage vendor relationships for key finance technology providers, including contract negotiations and performance reviews.
• Manage the SOC2 and HIPAA compliance audit process.
• Maintain comprehensive IT SOX documentation including control descriptions, testing evidence, and remediation tracking across all audit cycles.
• Prepare systems-level audit responses and coordinate responses to auditor requests with speed and precision.
• Ensure all financial systems provide the traceability, data integrity, and audit trail functionality required by finance and accounting leadership to support external reporting obligations.

Benefits

• Multiple medical benefit options; employee premiums paid 100% of select plans, dependents covered up to 80%
• Extremely generous Family Bonding Leave for eligible employees (16 weeks, paid at 100%)
• Supplemental fertility benefits coverage
• Retirement savings program including a 4% Company match
• Increase paid time off with increased tenure
• Latest and greatest hardware (laptop, lab equipment, facilities)
• Free daily on-site lunches provided from top eateries
• A variety of perks on campus (state of the art gym, restaurant)
• Free on-site EV charging (compatible with all EVs, including Tesla)
• Competitive base pay
• Opportunity for professional growth
• Industry leading company benefits (free healthcare options, 401k match, very generous fully paid parental leave etc.)

What This Job Offers

• Job Type: Full-time
• Career Level: Senior