Finance Assistant - Data and Membership Department

SEIU Local 509

Finance Assistant
Data and Membership Department

Based in Marlborough, MA

ABOUT SEIU LOCAL 509
SEIU Local 509 is a fast-growing, progressive union representing over 23,000 state workers, human service workers, higher education faculty, and family child care providers in Massachusetts. This position is part of the Data and Membership Department. In the current political environment, the union has a steadfast vision to increase participation and power among its rank-and-file membership.

SEIU Local 509 is part of the Service Employees International Union (SEIU), one of the largest and fastest-growing labor unions in the United States.

JOB DESCRIPTION
SEIU Local 509 is growing rapidly, and our team is expanding to better serve the needs of union members. We seek a full-time Finance Assistant in our Data and Membership Department to help facilitate this growth and evolution, and assist in the day-to-day functions of the organization. This position will primarily focus on assisting in the facilitation of the Beck Hudson process and addressing related issues. Other duties may be assigned as the department evolves.

EXPECTED RESPONSIBILITIES

• Assists in the facilitation of the Beck Hudson process by preparing mailings that welcome new members to the union.
• Processing membership cards received during the Beck Hudson process.
• Assisting the Finance and Business Specialist in preparing mailings. 
• Participates in regular staff meetings and trainings. 
• Provides general support for related business, membership and finance department functions (and other departments as assigned).
• Act as a support role in union activities.

JOB QUALIFICATIONS

• Strong written and verbal communication skills 
• Background in employee/member benefits, accounting, human resources or related fields strongly preferred
• Strong computer skills, including familiarity with accounting software, Excel Spreadsheets and CRM databases.
• Ability to convey complex information in a clear and concise manner
• Ability to work well with diverse populations.
• An insured, registered vehicle and a valid drivers’ license are required.
• Ability to multitask and work independently
• Union, non-profit or governmental experience preferred, but not required
• Prior knowledge and/or background of unions and dues systems helpful, but not required
• Support for and desire to contribute to the union's mission and principles.
• Willingness to work some nights and weekends, including travel throughout the state and infrequent out-of-state travel.

COMPENSATION, BENEFITS & LOCATION
This is a full-time bargaining unit position based in Marlborough, MA, with some flexibility for local remote work. The salary range for this position is $61,847.47 – $70,439.77 depending on experience. Benefits include, at no cost to the employee: health insurance with FSA and HRA, dental insurance, short and long-term disability, a pension, an optional 401k, and generous paid time off.

Must have a driver's license, vehicle registration, and/or intent to purchase a vehicle. Our main office is located in Marlborough, MA, and the position will require travel around the state.

SEIU Local 509 requires new employees to have a record of COVID-19 vaccination or a valid accommodation at the time of hire. 

APPLICATION PROCESS
To apply to this position, please submit an updated résumé and a thoughtfully written cover letter to View email address on unionjobs.com and indicate “ Finance Assistant ” in the subject line. The application deadline is 9/25/2026 .

Candidates who advance should expect initial in-person interviews at our Marlborough, MA headquarters beginning in September followed by a second round interview and a final interview with union leadership. 

We want to interview the best candidates for our organization. If you think you have the skills to fill the role and serve our mission, even if you don’t meet every qualification in the list, please consider applying. We review all applications thoroughly and are open to considering candidates from many different backgrounds.

If you would like to request accommodation during the interview process, please email View email address on unionjobs.com . Accommodation requests will be handled confidentially. Please do not send inquiries about the status of your application.

SEIU Local 509 is an equal opportunity employer and does not discriminate on the basis of sex, race, color, religion, sexual orientation, gender identity or expression, national origin, cultural heritage, ancestry, political belief, age, marital status, pregnancy, physical or mental disability or veteran status. SEIU Local 509 is compliant with the Americans with Disabilities Act and we are committed to making special accommodations for your interview or work as a member of our team.

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