Supervisor, Accounts Payable

Port of Seattle•Seattle, WA

2d•Hybrid

About The Position

As an Accounts Payable Supervisor, you will lead the Supplier team with a primary focus on protecting the organization from significant financial and compliance risks through rigorous controls in supplier onboarding, banking validation, and tax reporting. You will also maintain the integrity of the vendor master file, eliminate fraud risk and unauthorized activity, and ensure secure, accurate accounts payable operations enterprise-wide. You will oversee end-to-end supplier onboarding, including collection and verification of required documentation and ensure accurate creation and maintenance of supplier profiles in PeopleSoft, including 1099 tax classification. You will supervise secure collection and verification of banking information using multi-layered authentication to prevent fraud and ensure secure payments. You will also design and enforce internal controls to prevent fraudulent vendor creation and unauthorized changes. You will conduct periodic audits and reconciliations, escalate discrepancies, and drive resolution. You will also monitor and report suspicious banking activity and collaborate with Central Procurement and Treasury to ensure compliance with company policies. You will supervise, train, and develop Accounts Payable (AP) staff and meet with direct reports to identify and resolve problems and guide and assist AP team in resolving issues that prevent or delay invoice payments. You will provide support to the AP team by assisting Accounts Payable Manager with reviewing and approving payment run, resolving match exceptions, document tolerance, and budget review, as well as resolving unposted vouchers, reviewing the aging report, and coordinating payment cancellations due to returned ACH and escheatment. You will perform quarterly audit to review tax classification for suppliers and perform TIN matching to validate tax ID. You will be responsible for the end-to-end process of year-end 1099 information review, tax statements generation, and IRS filing. You will serve as the primary escalation point and operational liaison for Accounts Payable Manager, ensuring continuity and responsiveness in high-volume, deadline-driven environments. You will also provide functional support to internal Module Lead to resolve system issues, test during upgrades, and assist with necessary training in the field. You will work in partnership with Accounts Payable Leadership and Business Technology team on issue resolution, enhancements, and system upgrades related to AP processing, workflow management, Travel & Expense, and supplier management system.

Requirements

You have three (3) years of Experience in accounts payable operations and systems including supplier management, accounts payable, 1099 tax reporting, and/or general accounting, to include one (1) year of supervisory, mentoring, or project leadership experience within a financial or accounting setting.
You will apply equity and exemplify shared values, behaviors, and practices in all aspects of the work. At the Port of Seattle, equity is a daily responsibility and a foundational expectation for all Port employees.
You have strong experience in fraud prevention, system audits, and process documentation.
You also have experience supervising staff, including training, performance management, and coaching.
You possess strong verbal and written communication skills with the ability to clearly convey financial and procedural information to both technical and non-technical audiences. You can also build and maintain collaborative relationships with internal departments and external vendors.
You have excellent analytical and problem-solving skills with a focus on accuracy, process improvement, and risk mitigation. You can build, support, and lead a high-performing team in a dynamic, compliance-driven environment.
You possess strong organizational and time management skills and can prioritize multiple tasks and meet deadlines in a high-volume environment.
You are proficient in Microsoft Office Suite, especially Excel and Outlook, with the ability to generate, analyze, and present data to support decision-making.

Nice To Haves

We hope you have a bachelor’s degree in finance, accounting, economics or business administration; certifications related to accounts payable, supplier management, or 1099 reporting, advanced knowledge of accounts payable and/or supplier lifecycle management and ERP systems such as PeopleSoft, SAP, and Oracle and expertise in public sector accounting, internal controls, disbursement policies, and 1099/use tax reporting

Responsibilities

Lead the Supplier team with a primary focus on protecting the organization from significant financial and compliance risks through rigorous controls in supplier onboarding, banking validation, and tax reporting.
Maintain the integrity of the vendor master file, eliminate fraud risk and unauthorized activity, and ensure secure, accurate accounts payable operations enterprise-wide.
Oversee end-to-end supplier onboarding, including collection and verification of required documentation and ensure accurate creation and maintenance of supplier profiles in PeopleSoft, including 1099 tax classification.
Supervise secure collection and verification of banking information using multi-layered authentication to prevent fraud and ensure secure payments.
Design and enforce internal controls to prevent fraudulent vendor creation and unauthorized changes.
Conduct periodic audits and reconciliations, escalate discrepancies, and drive resolution.
Monitor and report suspicious banking activity and collaborate with Central Procurement and Treasury to ensure compliance with company policies.
Supervise, train, and develop Accounts Payable (AP) staff and meet with direct reports to identify and resolve problems and guide and assist AP team in resolving issues that prevent or delay invoice payments.
Provide support to the AP team by assisting Accounts Payable Manager with reviewing and approving payment run, resolving match exceptions, document tolerance, and budget review, as well as resolving unposted vouchers, reviewing the aging report, and coordinating payment cancellations due to returned ACH and escheatment.
Perform quarterly audit to review tax classification for suppliers and perform TIN matching to validate tax ID.
Responsible for the end-to-end process of year-end 1099 information review, tax statements generation, and IRS filing.
Serve as the primary escalation point and operational liaison for Accounts Payable Manager, ensuring continuity and responsiveness in high-volume, deadline-driven environments.
Provide functional support to internal Module Lead to resolve system issues, test during upgrades, and assist with necessary training in the field.
Work in partnership with Accounts Payable Leadership and Business Technology team on issue resolution, enhancements, and system upgrades related to AP processing, workflow management, Travel & Expense, and supplier management system.

Benefits

Healthcare – Medical, Dental, and Vision Care with options that work for you and your family.
Paid Vacation – Just about four weeks per year that increases with tenure to rest and rejuvenate.
Paid Sick Leave – At least one hour of sick leave for every 40 hours worked.
Holidays – More than ten days per year to celebrate with family and friends away from work.
Pension/Retirement Plans – A pension and additional savings plans to prepare for your future after the Port.
Getting to Work – From subsidized parking and a low-cost public transit card to alternative work arrangements giving you an opportunity to work hybrid.
Parental Leave – Six weeks of paid leave to spend with new additions to your immediate family.
Development – From tuition reimbursement, training, stretch assignments and internal internships, we support a learning culture.
Equity, Diversity, and Inclusion – The Port of Seattle values diversity as a source of innovation and strength. We are actively working across the organization to create a culture where all employees – regardless of race, gender, and other identities – succeed and reach their fullest potential.
Work-Life Balance – We provide the resources to help you create habits to be healthy and balanced.
Mission Driven – We are focused together in promoting economic opportunities and quality of life in the region by advancing trade, travel, commerce, and job creation in an equitable, accountable, and environmentally responsible manner.