Construction Site Admin & Billing Specialist

EMCOR; Oklahoma City (OK); On-site; USD 38,000 - 46,000; Full time

Job summary

Southern Industrial Constructors, Inc. is seeking a Site Administrator for a job-site in Stillwater, OK. This role combines office administration with project support, ensuring accurate timekeeping, billing preparation, and efficient document management on site.

You will coordinate with foremen, manage cost documents, assist employees with pay stubs and HR questions, and help with invoices and expense forms while maintaining a positive, professional presence in a busy field office.

Qualifications

• Associates Degree in business administration, safety or related field preferred.
• MS Word, Excel, Outlook and database management skills required.
• Strong interpersonal communication, attention to detail, organization and follow-up skills.
• Clean driving record required.

Responsibilities

• Type daily T&M time sheets by cost code from foreman time sheets.
• Prepare weekly group time and per diem sheets and process time off requests.
• Create cost codes as needed.
• Order construction consumables and safety supplies.
• Compile signed time sheets for billing.
• Assist with preparing invoices.
• Prepare credit card and cash expense forms.
• Assist employees with pay stubs and HR questions.
• Approve invoices in document management.
• Run cost reports in Timberline.
• May pick up items from suppliers (Lowes, Fastenal).
• Other duties as assigned.

Skills

MS Word

MS Excel

Outlook

Database management

Interpersonal communication

Attention to detail

Organization skills

Follow-up skills

Clean driving record

Education

Associates degree in business administration or safety

Tools

Timberline

Job description

Southern Industrial Constructors, Inc. is seeking a Site Administrator for a job-site in Stillwater, OK. This role combines office administration with project support, ensuring accurate timekeeping, billing preparation, and efficient document management on site.

You will coordinate with foremen, manage cost documents, assist employees with pay stubs and HR questions, and help with invoices and expense forms while maintaining a positive, professional presence in a busy field office.