Accounts Payable & Office Coordinator

OVERVIEW OF THE ROLE Mariner is seeking a detail-oriented and proactive professional to join our team as Accounts Payable & Office Coordinator. This role is primarily focused on accounts payable, with additional responsibility for front desk and office coordination. This is an ideal opportunity for someone who enjoys financial operations, takes pride in accuracy, and likes being part of a collaborative, in-office environment. This role is based in our Saint John office and follows a Monday to Friday schedule from 8:00 AM to 5:00 PM. WHAT YOU’LL BE DOING IN THE ROLE Accounts Payable (Primary Focus – 70–80%)

Process vendor invoices and employee expenses accurately and on time Manage accounts payable workflows in QuickBooks Online (QBO) Reconcile invoices, track approvals, and ensure proper documentation Support month-end close activities, including accruals and reporting Maintain organized, audit-ready financial records Identify opportunities to improve AP processes and drive efficiencies

Office Administration & Front Desk (20–30%)

Greet visitors at the front desk and direct them appropriately Act as the first point of contact for incoming calls, emails, and general inquiries Maintain office security procedures, including visitor logs and badge management Manage incoming and outgoing mail and coordinate shipments Coordinate office supplies, vendors, and general administrative needs Support travel booking and coordination using Egencia Assist with scheduling meetings, booking rooms, and organizing internal events Coordinate food orders and support in-office meetings in Saint John Assist with administrative tasks such as data entry, documentation, and reporting Perform other related duties as required

WHAT SKILLS / QUALIFICATIONS YOU’LL NEED TO DO THE JOB

3–5 years of experience in accounts payable or a similar finance role College diploma or bachelor’s degree in business, administration, or a related field, or equivalent experience Proficiency in Microsoft Office Suite (Word, Excel, Outlook) Experience with QuickBooks Online or similar accounting software Experience with office administration or front desk responsibilities is preferred Experience with Mavenlink and/or Egencia is considered an asset Strong attention to detail and accuracy Excellent organizational, multitasking, and time-management skills Ability to handle confidential information with discretion Strong professional communication and interpersonal skills