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Administrative Assistant Position #: 1103021618

Title: Administrative Assistant

Location: Carrizo Springs Texas

Schedule: 5/2


Compile data, compute fees and charges, and prepare invoices for billing purposes. Duties include computing costs and calculating rates for goods, services, and shipment of goods; posting data; and keeping other relevant records. May involve use of computer, calculator, and adding and bookkeeping machines.


  • Verify accuracy of billing data and revise any errors.
  • Operate typing, adding, calculating, or billing machines.
  • Prepare itemized statements, bills, or invoices and record amounts due for items purchased or services rendered.
  • Review documents such as purchase orders, sales tickets or charge slips to compute fees or charges due.
  • Perform bookkeeping work, including posting data or keeping other records concerning costs of goods or services or the shipment of goods.
  • Keep records of invoices and support documents.
  • Resolve discrepancies in accounting records.
  • Type billing documents, shipping labels, credit memorandums, or credit forms, using typewriters or computers.
  • Contact customers to obtain or relay account information.
  • Compute credit terms, discounts, shipment charges, or rates for goods or services to complete billing documents.
  • Review assigned departmental reports and make the necessary corrections.
  • Answer mail or telephone inquiries regarding rates, routing, or procedures.
  • Assist with correcting payroll issues that arise for assigned department(s). (edit report)
  • Collects and submits all time sheets and vacation requests to the appropriate department(s) for processing.
  • Assist with resolving billing errors for assigned department(s); including customer rejections or missing information from time sheets.
  • Upload documents to the designated filing system with the accurate information.
  • Maintaining all department information confidential and secure
  • Performs other related duties as required and assigned


  • Attention to detail
  • Strong organizational skills
  • Excellent written and verbal communication
  • Timely follow-up
  • Ability to prioritize
  • Computer software acumen
  • Basic computer skills and word processing.
  • Good mathematical background
  • Some experience with spreadsheets and automated accounting systems
  • Ability to sort, check, count, and verify numbers
  • Ability to multi-task, prioritize and work efficiently
  • Ability to listen, communicate (written and verbal), excellent grammar, spelling and proof reading skills and follow-up effectively with all staffing levels and clients/customers
  • Ability to work independently, self-starter, energetic
  • Ability to demonstrate good common sense and sound judgment
  • Flexibility to adapt to all situations and work varied hours; possibly work weekends or evenings


Insurance-Medical, Dental, Vision, Life

Prescription Drug Plan

Long Term & Short Term Disability

Paid vacations and holidays

Performance Award Program

Shamrock Energy Solutions is an Equal Opportunity Employer.

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