Administrative Assistant - St. Louis, MO

Overview

Administrative Assistant - St. Louis, MO

Post Date:
Feb 4, 2026

Location:

St. Louis, MO, US, 63103

Position Type:
Full Time

Requisition Number: 33852

Work Schedule:

Monday - Friday, 8:30am-5pm

Gateway Foundation, Inc. is a national non-profit dedicated to helping individuals with substance use and mental health disorders. Established in 1968, Gateway provides essential tools and knowledge for recovery, positively impacting hundreds of thousands of lives. Operating through its Community Services, Corrections Divisions, and Corporate Headquarters, the organization is recognized for innovative, effective treatment approaches and maintaining high standards.

Discover a rewarding career where you can find personal and professional fulfillment while aligning your values with your work. You ll have the opportunity to make a meaningful impact by aiding individuals in overcoming addiction. We pride ourselves on being an organization that values you and strives to be an employer of choice, fostering a vibrant culture that promotes teamwork and professional growth.

Your voice matters here; we actively listen to and value our employees  thoughts, allowing you to be part of organizational decisions. Join Gateway Foundation today and become part of a team dedicated to making a positive difference in the lives of others.

St. Louis Outpatient- 1430 Olive Street, Suite 300 St. Louis, MO 63103

• Administrative Assistant I Responsibilities:
  Provides office and administrative support within a substance use treatment and behavioral healthcare environment, serving as the first point of contact for clients, staff, and visitors. This role requires professionalism, attention to detail, and a compassionate approach that aligns with Trauma-Informed Care principles.
• Receives and screens visitors and telephone calls, and notifies appropriate personnel, or records messages.
• Deliver exceptional customer service by responding promptly, professionally, and accurately to customer inquiries, ensuring a positive and solution-focused experience.
• Composes and types materials including correspondence, memos, forms, tables, records and charts; proofreads and edits final draft materials for accuracy, consistency and clarity.
• Compiles data from various sources and prepares regular summary reports for supervisors to monitor income, expenses and contract compliance.
• Administers or processes routine financial transactions such as petty cash, bank deposits, receipts, ledgers, client funds, etc.
• Assists in processing billings by logging and coding treatments and services, recording treatment hours, or entering required information into records and databases.
• Maintains record keeping and filing systems for clients, personnel, payroll, attendance, purchase orders, and related records.
• Completes requisitions for approved office supplies and inventory; processes receipts and invoices for expenditures and obtains necessary authorizations for payment.
• Schedules meetings and appointments; makes routine travel arrangements as directed.
• Serves as administrative liaison between program/department and central offices; exchanges information related to operations, budget, payroll or personnel issues.
• Performs general office duties such as photocopying, mail distribution, inventory, time cards for payroll, meeting minutes, and related tasks.
• Provides client services as needed, including assisting with forms, verifying funding or insurance coverage, maintaining case files and scheduling appointments.

• High School Diploma or GED
• One year of administrative, clerical or office operations experience
• Trauma-Informed Care awareness with compassionate interaction

• Ability to communicate and exchange information
• Ability to respond to telephone inquiries and proofread data
• Ability to use keyboard and display terminal to enter and retrieve information
• Ability to pull, lift and transport files and documents

$18-20/hour. Gateway Foundation conducts annual reviews including merit increases.

• Health and wellness:
  Medical, dental, vision insurance; employee wellness program; employee assistance programs
• Financial wellbeing: 403(b) retirement plan with 3% employer match; disability and life insurance; flexible spending accounts; PSLF
• Flexibility and time off: 18 paid time off days per year; 9 paid holidays; work-life balance
• Personal development:
  Training programs; tuition reimbursement up to $5,250/year; eLearning; clinical supervision

Gateway Foundation is an Equal Opportunity

Employer:

Race/Color/Sex/Sexual Orientation/Gender Identity/Religion/National Origin/Disability/Vets. Please view Equal Employment Opportunity Posters provided by OFCCP here.