Administrative Assistant II (Substance Use Corrections

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Post Date:
Aug 7, 2026

Location:

Humble, TX, US, 77396

Position Type:
Full Time

Requisition Number: 34300

Work Schedule:

Monday
- Friday, 8:00AM - 4:30PM

Who is Gateway Foundation?

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.

Consider joining our team, where your impact can be truly meaningful. Our organization focuses on delivering high quality clinical services as a recognized leader in evidence-based treatment proven to get results. By joining our team, you'll have the chance to provide essential services to underserved populations, all while working for an organization that values you and aims to be an employer of choice.

You can expect to be part of a vibrant culture that emphasizes teamwork and professional growth. When you join us, you'll discover personal and professional fulfillment by aligning your career with your values.

We are honored to offer behavioral healthcare services in Corrections

Perks of working in correctional healthcare:

• Opportunity to make a positive impact on a marginalized population
• Exposure to diverse patient demographics
• Focus on driving change, tracking progress, and improving care
• Development of skills in a unique healthcare setting

Location:Atascocita -2310 1/2 Atascocita Rd. Humble, TX 77396

About Our Atascocita Location (Harris County):Gateway’s largest facility, Atascocita is a residential correctional center focused solely on substance use treatment for court-ordered clients. With 12 buildings and nearly 500 clients, the facility provides a structured, secure environment without armed guards. Staff work collaboratively in a team of 170, including counselors, probation officers, and support staff. The location is undergoing major renovations to become a state-of-the-art treatment center.

We foster a supportive culture with team-building activities, recognition programs, and a strong mission-driven focus on recovery and rehabilitation.

Work Schedule:Monday
- Friday, 8:00AM - 4:30PM

Administrative Assistant II
- Job Summary
Performs duties typical of Administrative Assistant I, as well as higher-level administrative duties. Utilizes detailed knowledge of area procedures and policies in order to relieve supervisor of standard administrative details which requires compiling and analyzing data and information, preparing summary reports, answering correspondence, conducting projects, and so forth. Performs office management functions such as directing work of lower-classified office personnel, assisting in monitoring revenue and expenses, processing purchasing requisitions, handling petty cash transactions, and so forth.

Performs various office and administrative support duties including composing and typing correspondence and documents, processing billing information, maintaining record keeping and filing systems, scheduling meetings and conferences, and receiving and screening visitors and telephone calls. Serves as administrative liaison between assigned department/center and other Gateway components by gathering and exchanging information related to operational, budget, payroll or personnel issues and procedures.

• Composes and types variety of materials and documents including correspondence, memos, forms, tables, records and charts from rough draft, general directions, or dictation; using standard computer word processing, database and spreadsheet applications. Proofreads and edits final draft materials for accuracy, consistency and clarity.
• Organizes and maintains office manual and electronic files, and ensures accurate and efficient storage and retrieval of documents and information. Updates, corrects and/or purges outdated or inaccurate files and information.
• Works on various administrative support projects as requested such as assisting with compiling with grant proposals, evaluating and recommending office equipment purchases, maintaining up to date policy and procedure manuals, and so forth.
• Assists in monitoring revenue and expenses by compiling data from records and logs, and preparing summary financial and budget reports. Maintains expenditure records and receipts.
• Compiles data and information for various administrative reports, statements, rosters and so forth. Performs standard statistical or arithmetic calculations, and drafts and prepares special reports or analyses for review by supervisor.
• Delegates work to and monitors work of lower-classified clerical support personnel. Participates in hiring, evaluating and disciplining lower-classified…