Administrative Assistant I — Admin, Billing & Payroll

Greenhouse Software, Inc.; Madison (WI); On-site; USD 38,000 - 48,000; Full time

Job summary

Mi-Tech Services Inc. is seeking an Administrative Assistant I to provide day-to-day support under direct supervision. The role emphasizes strong attention to detail and confidentiality, with duties across correspondence, scheduling, and document handling.

You will write and proofread correspondence, process mail, prepare invoices for approval, and coordinate with Accounts Payable. A high school diploma or GED and 0–3 years of related experience are required.

Qualifications

• High school diploma or GED required.
• 0 to 3 years of related administrative experience.
• Ability to write, proofread and distribute correspondence and reports.

Responsibilities

• Schedule meetings, process mail, assist with correspondence, make copies, maintain department materials, and manage distribution.
• Write, proofread and distribute/mail correspondence, reports, and letters as requested.
• Check and prepare invoices for approval; route to Accounts Payable for payment and follow up as needed.
• Facilitate invoice billing and track payment status.
• Track payroll records and perform transactional data entry with accuracy.

Skills

Multitasking

Attention to detail

Confidentiality

Professional image

Education

High School Diploma or GED

Tools

Microsoft Office

Email

Job description

Mi-Tech Services Inc. is seeking an Administrative Assistant I to provide day-to-day support under direct supervision. The role emphasizes strong attention to detail and confidentiality, with duties across correspondence, scheduling, and document handling.

You will write and proofread correspondence, process mail, prepare invoices for approval, and coordinate with Accounts Payable. A high school diploma or GED and 0–3 years of related experience are required.