Senior Administrative Assistant, IT

Enchanted Rock Management LLC•Houston, TX

11d

About The Position

The Senior Administrative Assistant provides high-level administrative and operational support to multiple senior leaders, including executive and department-level leadership. The role is responsible for calendar management, travel coordination, meeting logistics, expense reporting, document preparation, and other administrative and operational tasks. The ideal candidate is highly organized, detail-oriented, proactive, and able to manage competing priorities in a fast-paced environment. The position supports leaders by coordinating meetings and travel, preparing business documents, tracking action items, screening communications, and assisting with department budgets, invoices, purchase requisitions, expense reports, vendor setup, purchase orders, and contract administration. It also maintains records and confidential documents, coordinates onboarding logistics, supports team events and training, and serves as a point of contact among leadership, employees, vendors, and external partners. ERock describes itself as an energy company providing onsite utility-grade power using proprietary natural gas generators for customers including data centers, utilities, manufacturers, healthcare systems, and government organizations.

Requirements

At least 5 years of administrative, executive support, office management, or related experience.
Experience supporting multiple leaders simultaneously.
Advanced proficiency with Microsoft Outlook, Word, Excel, PowerPoint, and Teams.
Strong calendar management and travel coordination experience.
Experience processing expenses, invoices, or basic bookkeeping activities.
Excellent written and verbal communication skills.
Strong organizational skills and the ability to manage multiple priorities and deadlines.
Professionalism and discretion with confidential information.
Strong attention to detail.
Ability to anticipate needs and solve problems proactively.
Excellent time management and prioritization skills.
Customer-service mindset and ability to work across all levels of the organization.
Ability to operate independently with minimal supervision.

Nice To Haves

Experience supporting VP, CIO, CTO, or other executive-level leaders.
Experience working in a manufacturing, energy, engineering, or technology environment.
Familiarity with ERP, accounting, or procurement systems.
Experience coordinating vendor relationships and purchase orders.

Responsibilities

Manage complex calendars for multiple leaders, schedule meetings, coordinate priorities, and resolve conflicts.
Coordinate domestic and international travel, including flights, hotels, transportation, and itineraries.
Prepare meeting agendas, presentations, reports, and other business documents.
Organize internal meetings, leadership meetings, and offsite events.
Track action items and follow up with stakeholders to ensure timely completion.
Screen and prioritize incoming communications and requests.
Assist with department budgeting, invoice processing, purchase requisitions, and expense reporting.
Support vendor setup, purchase orders, and contract administration activities.
Maintain records, files, and confidential business documents.
Coordinate onboarding logistics for new team members, including workspace, equipment, and scheduling.
Assist with planning team events, training sessions, and employee engagement activities.
Serve as a point of contact between leadership, employees, vendors, and external partners.
Process invoices and ensure timely submission for payment.
Reconcile corporate credit card expenses and travel-related expenditures.
Assist with tracking departmental budgets and spending.
Support month-end administrative activities and reporting.
Maintain accurate records of expenses, contracts, and vendor documentation.