Administrative Assistant - Business Office and Physical Plant

About St. Mark’s

Founded in 1906, St. Mark's School of Texas is a non-sectarian, college-preparatory, independent day school for boys in grades one through twelve. The School’s charter states that it is “designed to afford its students well-rounded physical, intellectual, moral, and religious training and instruction.” The School is intended to be a diverse community of teachers and students who share a love of learning and who strive for high achievement in whatever they undertake.

St. Mark’s aims to prepare young men to assume leadership and responsibility in a competitive and changing world. To this end, the School professes and upholds certain values. These values include the discipline of postponing immediate gratification in the interests of earning eventual, hard-won satisfaction; the responsibility of defending one’s own ideas, of respecting the views of others, and of accepting the consequences for one’s own actions; and an appreciation for the lively connection between knowledge and responsibility and the obligation to serve.

The Administrative Assistant to the Business Office and Physical Plant provides comprehensive administrative and operational support to both departments. This position plays a vital role in maintaining effective communication, organization, and coordination between financial operations and facilities management. The ideal candidate will be detail-oriented, proactive, and comfortable managing diverse tasks that support the organization’s fiscal and physical infrastructure.

The Administrative Assistant to the Business Office and Physical Plant will be responsible for:

Business Office Support

• Provide administrative and clerical support to the Business Office, including scheduling, correspondence, and document preparation.
• Greet and check in incoming visitors and vendors in a professional and courteous manner.
• Assist with invoice processing, purchase orders, and other financial tasks as needed.

Physical Plant Support

• Provide administrative and clerical support to the Physical Plant, including scheduling, correspondence, and document preparation.
• Assist with facilities management tasks, including maintenance requests and vendor coordination.

• High school diploma or equivalent required; associate’s or bachelor’s degree preferred.
• Minimum 2 years of administrative experience, preferably in a business office or facilities management setting.
• Excellent communication, organizational, and problem-solving skills.
• Ability to work in a fast-paced environment and prioritize multiple tasks and deadlines.
• Proficiency in Microsoft Office, including Word, Excel, and Outlook.
• Ability to maintain confidentiality and handle sensitive information with discretion.