Administrative Assistant – Accounts Payable Support needed in Jamaica Plain, MA

Job ID: 806853

Location: Jamaica Plain, MA 
Duration: 11-Week Contract (Initial 3 Months with potential extension/renewal)
Work Arrangement: 100% Onsite
Schedule: Monday – Friday | 9:00 AM – 5:00 PM | 7.5 Hours/Day | 30-Minute Unpaid Lunch Break

Position Overview

Sigma, Inc. is seeking an experienced Administrative Assistant to support the Accounts Payable team for Fiscal Year-End activities at Lemuel Shattuck Hospital, operating under the Massachusetts Department of Public Health and the Commonwealth of Massachusetts.

This position requires full-time onsite attendance at the hospital's business office and will support critical accounting and administrative functions related to vendor payments and accounts payable processing.

Key Responsibilities

• File, retrieve, organize, and maintain vendor payment files and supporting documentation.
• Prepare, scan, and digitally archive vendor payment records.
• Provide general information and support to departments, staff members, and vendors.
• Pick up, sort, and distribute daily business office mail and correspondence.
• Reconcile accounts payable documents, invoices, transactions, and statements.
• Maintain accurate accounts payable records and documentation.
• Assist with fiscal year-end accounting activities and reporting requirements.
• Collaborate effectively within a team-oriented environment.
• Perform additional administrative and business office duties as assigned by management.

Required Qualifications

• Previous Administrative Assistant, Accounts Payable, Accounting Clerk, or related office support experience.
• Working knowledge of Accounts Payable processes and terminology.
• Understanding of accounting principles and practices.
• Experience reconciling invoices, statements, and financial documents.
• Proficiency with Microsoft Excel and other Microsoft Office applications.
• Strong organizational skills with exceptional attention to detail.
• Ability to manage confidential financial information appropriately.
• Excellent communication and interpersonal skills.
• Ability to work independently and as part of a team in a fast-paced environment.

Preferred Qualifications

• Prior experience supporting Finance, Fiscal Services, or Accounts Payable departments.
• Previous experience working within healthcare, government, or public sector organizations.
• Experience with document scanning and digital record management systems.

Work Site Information

Work Location: 170 Morton Street, Jamaica Plain, MA 02130
Parking: Free campus parking available
Transportation: Free shuttle service provided to and from Forest Hills Station (MBTA)
Dress Code: Business Casual

Important Notes

• This position is fully onsite with no remote or hybrid option available.
• Candidates must be available to start upon submission.
• Immediate availability is strongly preferred.
• All candidates submitted must confirm their ability to work the required schedule and onsite location.