Green Gas USA

Office Manager

Office Manager
Notice info
LocationHouston, TX
Job Typefull time
On-site
Oil and Gas

About This Job

At GreenGas, we’re helping lead the global energy transition by transforming waste into renewable energy and measurable decarbonization. We’re a fast-growing team of expert innovators, engineers, and problem-solvers committed to advancing global sustainability, fueling a circular economy, and creating a cleaner future for all. Join us and help shape the future of renewable energy.


# Office Manager


Location: Houston, TX


Reports To: CEO


Type: Full-Time


Position Summary

The Office Manager & Executive Assistant is responsible for the overall management, coordination, and effectiveness of the Houston office, a 15-person onsite location. This role owns all aspects of the physical office environment and day-to-day operations while providing executive administrative support to senior leadership. The position requires a high degree of autonomy, judgment, and discretion. The individual in this role ensures the office operates efficiently, supports productivity, and reflects company standards, while anticipating needs and resolving issues independently.


Essential Duties and Responsibilities


Office Operations & Facilities Management

- Own and manage daily office operations to ensure a safe, functional, organized, and professional workplace

- Serve as the primary point of contact for building management, landlords, vendors, and service providers

- Coordinate facilities maintenance, repairs, cleaning, security access, and office equipment

- Manage office supply inventory, ordering, and vendor relationships

- Monitor and manage office-related expenses, invoices, and budget tracking

- Ensure compliance with workplace safety standards, company policies, and operational procedures

- Coordinate office setup for new hires, including workspace readiness, equipment, and access

- Manage office moves, space planning, and reconfigurations as required

- Develop, document, and improve office processes and operational workflows


Executive Administrative Support

- Provide administrative support to senior leadership, including calendar management, scheduling, and meeting coordination

- Prepare meeting agendas, materials, presentations, and follow-up documentation

- Coordinate travel arrangements and itineraries

- Maintain confidential records and handle sensitive information with discretion

- Support executive-led initiatives and special projects as assigned


Office Experience & Coordination

- Act as the central point of coordination for office communications and logistics

- Coordinate internal meetings, leadership sessions, client visits, and onsite events

- Ensure consistent standards for office presentation, organization, and hospitality

- Support internal communication related to office operations and scheduling

- Partner with HR, IT, and leadership to support onboarding, engagement, and operational needs


Decision-Making Authority

- Independently manage day-to-day office operations and vendor coordination

- Make operational decisions within established budget and policy guidelines

- Escalate issues that materially impact cost, risk, or business continuity


Required Qualifications

- Minimum of 5 years of experience in office management, executive assistance, or a combined role

- Demonstrated ability to manage an office environment independently

- Strong organizational, time management, and prioritization skills

- Excellent written and verbal communication skills

- High level of discretion and professionalism

- Proficiency with Microsoft Office and scheduling tools


Preferred Qualifications

- Experience supporting senior or executive-level leaders

- Experience managing office budgets and vendors

- Experience in a professional services or corporate environment


Core Competencies

- Operational ownership

- Attention to detail

- Judgment and discretion

- Problem-solving

- Communication and coordination

- Service orientation


Physical & Work Requirements

- Ability to be onsite full-time in the Houston office

- Ability to lift and move office supplies and equipment as needed

- Ability to sit, stand, and move throughout the office during the workday

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