Executive Admin for CFO Support — Calendar & Travel

Warmada; Houston (TX); On-site; USD 45,000 - 65,000; Full time

Job summary

Mariana Minerals is seeking an Administrative Assistant to provide executive support to the CFO, manage calendars and travel, and handle expense reporting. The role also supports day-to-day office operations and backs up the Executive Assistant during absences.

Ideal for someone early in their career who is detail-oriented, resourceful, and eager to grow within an operations or executive support function. Join a software-driven minerals company focused on responsible sourcing and growth, working

Qualifications

• 1–3+ years of administrative / executive or office support experience preferred.
• Strong organizational skills and attention to detail.
• Excellent written and verbal communication skills.
• Proficiency in Microsoft Office.
• Experience with expense management and calendar systems preferred.
• Ability to handle confidential information with discretion.
• Strong time management and prioritization skills.
• Problem-solving mindset.
• Professional and service-oriented approach.
• Adaptability in a fast-paced environment.
• Team player with a positive attitude.

Responsibilities

• Administrative & Calendar Support: schedule meetings, manage calendars, coordinate appointments.
• Prepare meeting materials, agendas, and notes as needed.
• Coordinate cross-functional meetings and company events.
• Travel & Logistics: book and manage domestic and international travel.
• Handle last-minute travel changes and troubleshoot logistics.
• Expense & Reporting Support: prepare and submit expense reports and reconcile receipts.
• Executive Assistant Backup: provide backup during absences and assist with ad hoc requests.

Job description

Mariana Minerals is seeking an Administrative Assistant to provide executive support to the CFO, manage calendars and travel, and handle expense reporting. The role also supports day-to-day office operations and backs up the Executive Assistant during absences.

Ideal for someone early in their career who is detail-oriented, resourceful, and eager to grow within an operations or executive support function. Join a software-driven minerals company focused on responsible sourcing and growth, working