Senior Accounts Payable Specialist

Job Title: Senior Accounts Payable Specialist | Hybrid Job Description The Senior Accounts Payable Specialist oversees the full accounts payable cycle from invoice receipt through payment, ensuring accurate processing, strong financial controls, and timely support for internal and external stakeholders. This role serves as a key resource for accounts payable procedures and systems, provides guidance to team members, and helps drive process improvements while maintaining high volumes of weekly invoice activity. Responsibilities

- Manage the full accounts payable cycle from receipt through payment, including purchase order and non-purchase order invoices, coding, system entry, coordination of approvals, and preparation of payments.
- Validate invoices against purchase orders and receiving records to confirm appropriate documentation, accuracy, and authorization prior to payment.
- Review employee expense submissions for accuracy, proper supporting documentation, and adherence to established expense policies, and ensure timely processing of reimbursements.
- Reconcile accounts payable activity to the general ledger, investigate variances or outstanding items, and ensure accurate financial reporting.
- Create and maintain accurate vendor profiles, ensuring that all required documentation and account information are current and complete.
- Respond promptly and professionally to inquiries from vendors, employees, and internal business partners regarding invoices, payment status, discrepancies, and other accounts payable matters.
- Track invoice and payment activity to ensure processing deadlines, volume targets, and departmental service expectations are consistently met.
- Coordinate recurring payment activities using check, ACH, wire transfer, and other approved payment methods, ensuring accuracy and timeliness.
- Support monthly and annual financial close activities, including accounts payable reconciliations and preparation of accruals.
- Act as a knowledgeable resource for accounts payable procedures, systems, controls, and operational questions, providing guidance to colleagues as needed.
- Assist accounts payable team members with daily questions, process guidance, training, and resolution of more complex transactions or exceptions.
- Review team output as needed to help maintain accurate, complete, and consistent accounts payable processing and documentation.
- Evaluate existing workflows and recommend improvements to streamline processing, reduce errors, enhance use of automation tools, and strengthen financial controls.
- Provide invoices, payment records, reconciliations, and other supporting documentation requested during internal and external audits.
- Maintain complete, well-organized, and compliant accounts payable records in line with applicable document retention practices.
- Assist department leadership with monitoring operational targets, invoice volume, workload distribution, and performance measures.
- Help lead the accounts payable team by serving as a key support partner to leadership, without direct people management responsibilities.
- Manage the shared accounts payable email inbox, ensuring inquiries and invoices are handled efficiently and accurately.
- Use Excel extensively, including pivot tables, lookups, and SUMIFS formulas, to analyze data, support reconciliations, and monitor invoice and payment activity.
- Participate in special projects, process improvement initiatives, and other accounting-related responsibilities as business needs arise.

Essential Skills

- 5 + years of progressive accounts payable experience, including full-cycle invoice processing for both purchase order and non-purchase order invoices.
- Proven experience processing high volumes of invoices, with the ability to accurately handle approximately 200300 invoices per week.
- Strong hands-on experience with accounts payable operations, including invoice processing, purchase order matching, and general ledger reconciliation.
- Proficiency with Microsoft Excel, including pivot tables, VLOOKUP or similar lookup functions, and SUMIFS, with the ability to use Excel extensively for analysis and reporting.
- Working knowledge of accounts payable systems and platforms, with familiarity or experience in SAP or JDE preferred.
- Experience using automated invoice processing, accounts payable platforms, or workflow automation tools.
- Experience with employee expense management platforms such as Emburse or Concur, including reviewing expenses, validating documentation, processing reimbursements, and monitoring policy compliance.
- Strong attention to detail with excellent organizational and recordkeeping abilities.
- Ability to prioritize multiple responsibilities, manage high volumes of work, follow through on outstanding items, and meet established deadlines.
- Professional, collaborative approach when working with colleagues, vendors, and other business partners.
- Strong written and verbal communication skills, including the ability to explain accounts payable processes and resolve issues clearly.
- Dependable attendance and reliability, with the flexibility to work additional hours when business needs or close-cycle demands require it.

Additional Skills & Qualifications

- Comfort working in a hybrid environment and adapting to onsite training requirements.
- Demonstrated ability to support and help lead a small accounts payable team by acting as a key partner to leadership, without direct managerial responsibilities.
- Ability to manage a shared accounts payable email inbox and coordinate responses and processing efficiently.
- Willingness to take on special assignments and broader accounting-related responsibilities as business needs evolve.
- Ability to balance accuracy and speed, with performance measured by the capacity to process high volumes of invoices while maintaining quality.
Job Type & Location
This is a Contract to Hire position based out of Irvine, CA.
Pay and Benefits
The pay range for this position is $29.00 - $33.00/hr. Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors. Eligibility requirements apply to some benefits and may depend on your job
classification and length of employment. Benefits are subject to change and may be
subject to specific elections, plan, or program terms. If eligible, the benefits
available for this temporary role may include the following:

Medical, dental & vision
Critical Illness, Accident, and Hospital
401(k) Retirement Plan Pre-tax and Roth post-tax contributions available
Life Insurance (Voluntary Life & AD&D for the employee and dependents)
Short and long-term disability
Health Spending Account (HSA)
Transportation benefits
Employee Assistance Program
Time Off/Leave (PTO, Vacation or Sick Leave)
Job Type & Location
This is a Contract to Hire position based out of Irvine, CA.
Application Deadline
This position is anticipated to close on Nov 9, 2026.
Workplace Type
This is a hybrid position in Irvine,CA.

About Aston Carter

Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe. Specialized in accounting, finance, human resources, talent acquisition, procurement, supply chain and select administrative professions, we extend the capabilities of industry-leading companies. We draw on our deep recruiting expertise and expansive network to meet the evolving needs of our clients and talent community with agility and excellence. With offices across the U.S., Canada, Asia Pacific and Europe, Aston Carter serves many of the Fortune 500. We are proud to be a ClearlyRated Best of Staffing® Platinum Award winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email [email protected] for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.