Accounts Payable Specialist; Mid to Senior-Level

Shannon & Wilson is an employee‑owned consulting firm headquartered in Seattle, Washington. Committed to technical excellence and high‑quality service, we provide integrated geotechnical engineering, engineering geology, environmental and natural resource services for clients worldwide. Since 1954, we have delivered comprehensive engineering and environmental solutions for the most challenging infrastructure planning, design, permitting and construction conditions.

We are dedicated to improving our communities, preserving the environment and utilizing the most innovative science practices in all our work.

Job Type: Full‑time

The Accounts Payable Specialist is responsible for ensuring timely and accurate processing of invoices, payments, expense reports and vendor records. They will also serve as backup for our Payroll Coordinator.

• Oversee the end‑to‑end AP cycle, maintain controls, and lead month‑end activities.
• Provide accuracy, policy compliance and timeliness in the day‑to‑day administration of accounts payable.
• Code invoices, vouchers, expense reports, check requests with correct codes conforming to standard procedures to ensure proper entry into the financial system.
• Ensure adherence to vendor payment terms and company policy.
• Manage team mailboxes daily and ensure email responses are completed within 48 hours.
• Support audits and provide required documentation.
• Build and maintain strong, positive internal and external relationships and resolve complex payment issues.
• Work collaboratively with employees at all levels to detect issues and implement agreed‑upon solutions regarding system and transaction discrepancies.
• Update and maintain documentation of processes and procedures. Utilize AP best practices to design, develop and implement processes, procedures and training.
• Analyze new laws, proposed laws and regulations that govern AP and related processes and implement process changes to improve efficiency.
• Follow Shannon & Wilson’s Quality Assurance policy.
• Follow and promote Shannon & Wilson’s Health & Safety and Loss Prevention policies and procedures.
• Provide backup to Payroll Coordinator.

• Associate or bachelor’s degree in accounting or finance preferred; education may be considered in lieu of years of experience.
• 8+ years’ accounting experience including accounts payable, accounts receivable, and payroll.
• Prior experience with BST or comparable ERP system.
• Demonstrated experience in payroll administration, including data entry, audits, and compliance with federal and state regulations.
• Project accounting experience a plus.
• Proficiency in Microsoft Office.
• Strong attention to detail, organizational skills, and ability to meet deadlines.
• Ability to interact with all levels of employees across the company and outside contacts; professionalism, judgment and excellent communication and consulting skills are required.
• Excellent writing, organizational, and communication skills.
• Personable, flexible, and professional demeanor.
• Ability to work independently with appropriate level of supervision.
• Frequent sitting, standing, and walking (with or without accommodation).

Typically, depending on an applicant’s education, experience, and other qualifications, a Mid‑to‑Senior‑Level Accounts Payable Specialist would be placed at an Office Services V or Senior Office Services level, if selected as a fit for the company and local office culture and the current business needs.

Office Services V: $32.00–$50.00 per hour
Senior Office Services: $36.00–$70.00 per hour

Shannon & Wilson offers a competitive benefits package to support our employees. These benefits include:

• Employee ownership
• Comprehensive medical, prescription, vision, and dental coverage.
• Pre‑tax health and daycare FSA
• Life and disability insurance
• Long‑term care insurance
• Profit sharing and 401(k) plans
• Paid time off for vacation and sick leave
• 10 paid holidays
• Paid volunteer day
• Free parking

Shannon & Wilson is an Equal Opportunity Employer.

Shannon & Wilson participates in the E‑Verify program.

Please note that non‑solicited resumes from external recruitment agencies will not be considered as introductions to our business unless a pre‑approved agreement is in place and the external recruitment agency has been engaged to work on this specific vacancy.

$32.00 to $70.00 per hour