Demo

Assistant Bookkeeper

Marran
Holtsville, NY Full Time
POSTED ON 10/16/2026
AVAILABLE BEFORE 11/14/2026

Accounting / Comptroller Assistant


We are looking for a dependable, detail-oriented Accounting / Comptroller Assistant to support our Comptroller with day-to-day accounting, billing, payment processing, inventory posting, and administrative work.


This is a hands-on office position that requires someone who is comfortable working with numbers, accurate on a keyboard, organized, and generally good with computers. Prior bookkeeping or accounting experience is helpful, but we are primarily looking for someone who is reliable, learns quickly, and can accurately handle repetitive financial and administrative tasks.


Responsibilities will include:

  • Posting customer payments and accounts receivable
  • Posting oil deliveries and related transactions
  • Posting parts and inventory costs to jobs
  • Reviewing cost sheets and entering job-related costs
  • Generating and printing service and delivery tickets from our software system
  • Pulling and organizing delivery tickets for the scheduling board
  • Running reports to identify outstanding balances
  • Preparing customer renewals
  • Assisting with billing, including alarm and other recurring billing
  • Printing, stuffing, and mailing customer documents and statements
  • Assisting the Comptroller with other accounting and administrative tasks as needed


Seasonal Responsibilities

Our workload varies throughout the year. During the winter heating season, this position will spend additional time on:

  • Posting oil deliveries
  • Organizing and pulling delivery tickets
  • Processing customer payments
  • Reviewing outstanding balances
  • Preparing delivery and billing paperwork

The position is expected to be at least 6 hours per day, with the possibility of additional hours during our busy winter season.


Qualifications

The right candidate should have:

  • Strong keyboard and data-entry skills
  • Good numerical ability and attention to detail
  • General computer proficiency
  • Ability to work accurately with financial information
  • Strong organizational skills
  • Ability to manage repetitive tasks without sacrificing accuracy
  • Reliability and consistent attendance
  • Basic Microsoft Excel experience preferred
  • Prior bookkeeping, accounts receivable, or office experience is a plus

Experience with our specific accounting and fuel-delivery software is not required. We are willing to train the right person.


What We’re Looking For

This role is best suited for someone who enjoys structured office work, is comfortable working with numbers, and takes satisfaction in keeping records accurate and up to date. The person in this position will work closely with our Comptroller and will become an important part of our accounting and administrative operation.


Schedule: Approximately 6 hours per day, Monday through Friday, with seasonal variation


Location: Holtsville, NY


Benefits:

  • 401(k)
  • 401(k) 5% Match
  • 401(k) matching
  • Employee discount
  • Paid sick time
  • Paid time off
  • Paid training
  • Parental leave
  • Professional development assistance
  • Retirement plan
  • Work Location: In person

Salary.com Estimation for Assistant Bookkeeper in Holtsville, NY
$44,376 to $55,825
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