Demo

Administrative Assistant

Henkels & McCoy
Pomona, CA Full Time
POSTED ON 6/3/2026
AVAILABLE BEFORE 7/2/2026

Henkels & McCoy West works closely with clients from diverse markets to build enduring partnerships throughout the Western United States. Our team of seasoned professionals designs, builds, manages, and maintains critical and sustainable infrastructure for the power, oil & gas pipeline, gas distribution, and communications industries. Building on a 100-year legacy of performance and service to utility, commercial, industrial, and government clients, H&M West brings together extensive knowledge and innovation to deliver infrastructure construction solutions that meet future energy needs today.

H&M West is a purpose-driven company. Our core values guide our strategy, performance, and culture. We believe in maintaining an environment where team members can make an impact, grow, and thrive. A place where they find meaning and purpose in doing the important work of ensuring communities have the vital energy, light, and communications to prosper. Our culture is inclusive and welcoming. Our teams are empowered with abundant training, tools, and opportunities to follow their curiosity and ambitions. Everyone has an equal chance to advance. Everyone is supported, respected, and challenged to be their best. We’re always looking for talented and dedicated people to join us and love where they work.

Henkels & McCoy West is a proud subsidiary of MasTec (NYSE: MTZ), a Fortune 500 Company ranked by Energy News-Record as one of the leading contractors in the country. H&M West is part of the MasTec Power Delivery segment. We are certified as a minority-controlled company by the National Minority Suppliers Development Council (NMSDC). Our rich diversity of people and ideas makes us a stronger, more innovative organization.


The Administrative Assistant role is responsible for managing vendor payments, processing invoices, and maintaining accurate financial records. This role requires a minimum of 3 years of Accounts Payable experience, intermediate level Microsoft Office skills, and accounting software proficiency. The ideal candidate is someone with strong attention to detail, excellent verbal and written communication skills, and the ability to work independently and prioritize tasks.

  • Monitors and manages the Accounts Payable inbox, receiving and routing vendor invoices and inquiries.
  • Processes invoices for payment by verifying accuracy and required information in JD Edwards.
  • Uses ScanMan (OCR) to scan, upload, and index vendor invoices.
  • Assigns correct business unit (BU) numbers and supplier IDs to invoices.
  • Follows up with internal teams to obtain proper coding and approvals for invoices.
  • Assists with resolving basic invoice and vendor questions.
  • Helps reconcile vendor statements and supports invoice research as needed.
  • Maintains AP records by scanning, filing, and organizing documents.
  • Provides customer service to internal departments and vendors regarding AP-related inquiries.
  • Learns Accounts Payable processes and follows company procedures and best practices.
  • Maintains confidentiality of financial and company information.
  • Performs other administrative and accounting support duties as assigned.
  • Assist the project controls team with other administrative functions to include customer billing.

  • Experience in financial bookkeeping software
  • Expert-Level knowledge of spreadsheets
  • Experience with word-processing tools is essential for generating and writing reports for record-keeping and presentations
  • General ledger experience
  • Attention to detail & thoroughness
  • Highly organized
  • Analytical skills, data entry skills & general math skills
  • Experience working in JD Edwards (preferred)
  • Understanding of current accounting trends (preferred)
  • Experience with budget creation and finance management (preferred)

Education and Experience Requirements:

  • High School Diploma, GED, or equivalent required
  • Bachelor's degree in accounting, finance, or related field preferred
  • 3 years of accounting experience required
  • Previous experience in accounts payable in the Construction Industry preferred

Wage Range:

$21.92 to $32.84/Hour

Benefits: 

 

Full-time employees are eligible to participate in our benefit plan which includes the following: 

  • 401(k) Plan 
  • Employee Stock Purchase Plan 
  • Health, Dental, & Vision Insurance 
  • Voluntary Life Insurance 
  • Voluntary Short Term & Long-Term Disability 
  • Paid time off 

Henkels & McCoy West is an Equal Opportunity Employer of Minorities, Females, Protected Veterans, and Individuals with Disabilities.

Salary : $22 - $33

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