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Accounts Receivable Specialist

MACH ENERGY SERVICES LLC
Oklahoma, OK Full Time
POSTED ON 9/24/2026
AVAILABLE BEFORE 1/21/2027

JOB TITLE: Accounts Receivable Specialist
LOCATION: Oklahoma City, OK
REPORTS TO: Accounting Manager
COMPANY: Mach Energy Services LLC

ABOUT US

Mach is a rapidly growing provider of energy-related construction solutions for the upstream and midstream markets. Mach has a position available in our Accounting department as an Accounts Receivable Specialist in Oklahoma City, OK.

POSITION SUMMARY

The Accounts Receivable Specialist is responsible for creating invoices and communicating with customers to collect payment. The AR Specialist also communicates with project managers and directors to bill customers appropriately and manage any changes, disputes, and discrepancies.

KEY RESPONSIBILITIES

  • Prepare customer invoices in Viewpoint Spectrum and send to customers
  • Apply cash receipts and reconcile payments against open invoices
  • Monitor the AR aging and investigate past-due balances
  • Bill retainage on completed jobs as directed
  • Escalate overdue invoices to the appropriate channels
  • Research and resolve invoice discrepancies and disputes
  • Prepare weekly AR Reports for directors
  • Communicate with customers regarding expected payments
  • Coordinate with project managers on lien waivers and retainage as needed
  • Support month-end close through timely entry of receivables

REQUIRED SKILLS

  • High school diploma or equivalent
  • 2 years of accounts receivable, collections, or general accounting experience
  • Proficiency with Microsoft Excel (pivot tables, XLOOKUP), Outlook, Teams, Sharepoint
  • Attention to detail and organizational skills
  • Professional written and verbal communication
  • Ability to manage multiple accounts and deadlines in a fast-paced environment

PREFERRED QUALIFICATIONS

  • Associate’s or Bachelor’s degree in Accounting, Finance, or related field
  • Experience in the construction industry working directly with project managers
  • Familiarity with Spectrum/Viewpoint or similar construction ERP system
  • Familiarity with platforms such as Open Invoice and Ariba
  • Experience with lien waivers, retainage, T&M billing, schedule of values, pay applications AIA G702/G703

WORKING CONDITIONS

  • Use a computer, phone, and standard office equipment.
  • Work extended hours and adjust priorities to meet project goals.
  • Attend and participate in meetings.

BENEFITS

  • Competitive salary and performance-based bonuses
  • Health, dental, and vision insurance
  • 401(k)
  • Paid time off and holidays

Salary.com Estimation for Accounts Receivable Specialist in Oklahoma, OK
$37,834 to $46,352
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