Accounts Payable Manager

Quantum-Si; San Diego (CA); On-site; USD 105,000 - 125,000; Full time

Benefits offered by this job

Health insurance

HSA/FSA options

Company-paid life and AD&D insurance

Disability coverage

Employee Assistance Program (EAP)

Discretionary paid time off

Job summary

Quantum-Si is seeking an Accounts Payable Manager in the San Diego area to lead day-to-day AP activities, onboarding, and payments while driving process improvements. You will manage vendor relationships, ensure SOX controls, and collaborate with Procurement, Accounting, Treasury, and Tax to optimize the procure-to-pay cycle.

The role combines hands-on execution with leadership, requires 7+ years in AP/P2P, and offers a base salary with a discretionary annual bonus and equity opportunities.

Qualifications

• 7+ years of progressive accounts payable or procure-to-pay experience.
• Strong understanding of accounts payable operations, internal controls, and financial close processes.
• Experience working directly within ERP and AP automation systems, NetSuite preferred.
• Experience with Tipalti or other AP automation platforms preferred.
• Ability to perform work in a fast-paced, deadline-driven work environment while consistently meeting standards for productivity and quality.
• Demonstrated ability to balance strategic process improvement with hands-on transactional responsibilities.
• Must be a self-starter with excellent time management skills with proven ability to meet deadlines.
• Communicates in clear and concise manner across multiple levels of the organization, both orally and written.

Responsibilities

• Own and execute the day-to-day accounts payable function, ensuring accurate and timely processing of invoices, employee reimbursements, credit memos, and vendor payments.
• Perform and review invoice coding, three-way match validation, exception resolution, and approval workflow management.
• Prepare and process payment runs including ACH, wire transfers, virtual card payments, and checks.
• Review, audit, and process employee expense reports for accuracy, completeness, appropriate business purpose, proper supporting documentation, and policy compliance.
• Partner with Procurement, Accounting, Treasury, Tax and department leaders to improve process efficiency and user experience.
• Execute and maintain key controls within the procure-to-pay cycle in accordance with SOX requirements and company policies.
• Ensure invoices, vendor records, and payments are processed in compliance with approval authority requirements and established controls.
• Manage vendor onboarding and maintenance processes, including validation of banking information, tax forms, and required documentation.
• Support monthly, quarterly, and annual close activities related to accounts payable and accrued liabilities.
• Prepare and analyze AP-related reconciliations, schedules, and reports.
• Coordinate annual Form 1099 reporting activities.
• Support compliance with applicable tax, payment, and regulatory requirements.
• Identify opportunities to leverage technology to reduce manual processing and improve scalability.

Skills

Accounts payable

Procure-to-pay

ERP systems

NetSuite

AP automation

Vendor management

SOX controls

Process improvement

Time management

Communication

Tools

Tipalti

Job description

The Accounts Payable Manager is responsible for leading and executing all aspects of the Company's Accounts Payable function, including vendor onboarding, invoice processing, payment execution, employee expense reimbursements, month‑end close support, and internal controls.

This is a hands‑on role requiring both leadership and day‑to‑day execution. The successful candidate will be comfortable processing transactions, resolving exceptions, managing vendor relationships, and completing operational activities while simultaneously identifying opportunities to improve processes, enhance controls, and leverage automation.

As part of our team, your core responsibilities will be:

• Own and execute the day‑to‑day accounts payable function, ensuring accurate and timely processing of invoices, employee reimbursements, credit memos, and vendor payments.
• Perform and review invoice coding, three‑way match validation, exception resolution, and approval workflow management.
• Prepare and process payment runs including ACH, wire transfers, virtual card payments, and checks.
• Review, audit, and process employee expense reports for accuracy, completeness, appropriate business purpose, proper supporting documentation, and policy compliance.
• Partner with Procurement, Accounting, Treasury, Tax and department leaders to improve process efficiency and user experience.
• Execute and maintain key controls within the procure‑to‑pay cycle in accordance with SOX requirements and company policies.
• Ensure invoices, vendor records, and payments are processed in compliance with approval authority requirements and established controls.
• Manage vendor onboarding and maintenance processes, including validation of banking information, tax forms, and required documentation.
• Support monthly, quarterly, and annual close activities related to accounts payable and accrued liabilities.
• Prepare and analyze AP‑related reconciliations, schedules, and reports.
• Coordinate annual Form 1099 reporting activities.
• Support compliance with applicable tax, payment, and regulatory requirements.
• Identify opportunities to leverage technology to reduce manual processing and improve scalability.

Qualifications

• 7+ years of progressive accounts payable or procure‑to‑pay experience.
• Strong understanding of accounts payable operations, internal controls, and financial close processes.
• Experience working directly within ERP and AP automation systems, NetSuite preferred.
• Experience with Tipalti or other AP automation platforms preferred.
• Ability to perform work in a fast‑paced, deadline‑driven work environment while consistently meeting standards for productivity and quality.
• Demonstrated ability to balance strategic process improvement with hands‑on transactional responsibilities.
• Must be a self‑starter with excellent time management skills with proven ability to meet deadlines.
• Communicates in clear and concise manner across multiple levels of the organization, both orally and written.

The estimated base salary range for this position in the United States is $105,000 - $125,000. In addition to base salary, full‑time employees are eligible to participate in Quantum‑Si's discretionary annual bonus program and may receive equity awards as part of the total compensation package.

Actual compensation will be determined based on a variety of factors, including, but not limited to, the position level, relevant skills, knowledge, experience, qualifications, geographic location, internal equity, and market data.

Quantum‑Si also offers a competitive benefits package designed to support employees' health, well‑being, work‑life balance, and family needs. Benefits include:

• Comprehensive medical, dental, and vision insurance coverage
• Health Savings Account (HSA) and Flexible Spending Account (FSA) options, where applicable
• Company‑paid life and accidental death & dismemberment (AD&D) insurance
• Short‑term and long‑term disability coverage
• Employee Assistance Program (EAP) resources to support personal and professional well‑being
• Discretionary paid time off and company‑paid holidays
• Parental leave to support employees welcoming and caring for a new child
• 401(k) retirement savings plan with both pre‑tax and Roth contribution options

Additional Information

Candidates must be authorized to work in the United States. Quantum‑Si does not provide employment‑based immigration sponsorship of any kind for this position, including support for applicants currently pursuing permanent residency (Green Card sponsorship).

Quantum‑Si does not accept unsolicited agency resumes.

Quantum‑Si is an E‑Verify and equal opportunity employer regardless of race, color, ancestry, religion, gender, national origin, sexual orientation, age, citizenship, marital status, disability or Veteran status. All your information will be kept confidential according to EEO guidelines.