Administrative Assistant - Data Entry, Excel & Invoicing

Cella Inc; St. Louis (MO); On-site; USD 26,000 - 29,000; Full time

Job summary

Express Employment Professionals Saint Louis is actively hiring for an Administrative Assistant (Full-Time) to support a busy office environment in Saint Louis, MO. This entry-level to junior role emphasizes organization, data entry, invoicing, and basic accounting tasks.

The ideal candidate will have strong Excel skills, familiarity with QuickBooks is a plus, and the ability to multitask while providing reliable administrative support to internal teams and clients.

Qualifications

• High School Diploma or GED required.
• 1–2 years of administrative or office support experience.
• Experience with QuickBooks is a plus.
• Proficiency in Microsoft Excel and Microsoft Office.
• Strong organizational skills and attention to detail.
• Ability to multitask in a fast-paced office.

Responsibilities

• Provide daily admin support including filing, scanning, and document organization.
• Perform accurate data entry.
• Process invoices, payments, and financial transactions.
• Maintain financial records using accounting software.
• Use Microsoft Excel for data tracking and reporting.
• Communicate professionally with clients, vendors, and internal teams.
• Support general office operations and additional duties as assigned.

Skills

Data entry

Multitasking

Attention to detail

Verbal and written communication

Education

High School Diploma or GED

Tools

Microsoft Excel

QuickBooks

Job description

Express Employment Professionals Saint Louis is actively hiring for an Administrative Assistant (Full-Time) to support a busy office environment in Saint Louis, MO. This entry-level to junior role emphasizes organization, data entry, invoicing, and basic accounting tasks.

The ideal candidate will have strong Excel skills, familiarity with QuickBooks is a plus, and the ability to multitask while providing reliable administrative support to internal teams and clients.