Executive Admin to CFO – Calendar, Travel & Ops

Mariana Minerals; Houston (TX); On-site; USD 34,000 - 52,000; Full time

Job summary

Mariana Minerals in Houston invites an Administrative Assistant to support the CFO with calendar management, travel planning, and expense processing, while also assisting with day-to-day office operations.

The role requires 1–3+ years of administrative experience, strong communication, and excellent organization in a fast-paced environment. The position also supports the Executive Assistant during peak periods and may involve event coordination.

Qualifications

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

Responsibilities

• Provide administrative support to the CFO, including calendar and travel coordination and expense management
• Coordinate domestic and international travel, flights, hotels, and ground transportation
• Prepare and submit expense reports and reconcile receipts
• Support day-to-day office operations and visitor management
• Act as backup to the Executive Assistant during absences and high-volume periods

Skills

Organizational skills

Written & verbal communication

Time management

Tools

Microsoft Office

Job description

Mariana Minerals in Houston invites an Administrative Assistant to support the CFO with calendar management, travel planning, and expense processing, while also assisting with day-to-day office operations.

The role requires 1–3+ years of administrative experience, strong communication, and excellent organization in a fast-paced environment. The position also supports the Executive Assistant during peak periods and may involve event coordination.