Office Manager

POSITION SUMMARY

Sentinel Midstream LLC is seeking a highly organized, proactive professional to lead the day-to-day operations of its Houston corporate office while providing executive administrative support to Houston based executive(s). This position serves as a central point of coordination for employees, visitors, vendors, and business partners and helps ensure the office operates efficiently, professionally, and securely. The successful candidate will balance office-management responsibilities with executive support, front-office coverage, event and meeting coordination, vendor management, and confidential administrative work. The role requires sound judgment, strong follow-through, and the ability to anticipate needs while managing competing priorities.

CORE RESPONSIBILITIES

Office Management & Workplace Operations Coordinate daily Houston office operations and maintain a professional, organized, and welcoming workplace. Oversee office opening and closing readiness, including conference rooms, lobby and lounge areas, the cafe, supply rooms, and shared equipment. Manage office supplies, cafe inventory, ordering, shipments, mail, couriers, and package distribution; resolve vendor, service, or billing issues as needed. Coordinate with building management and service providers regarding access badges, parking, cleaning, maintenance, repairs, and other facility needs. Support office moves, floor planning, new-office setup, employee arrivals, and workspace readiness. Request quotes, track office-related purchases and expenses, maintain records, and support budget monitoring and invoice reconciliation. Support the management of smaller remote offices that do not have on-site support Executive Administrative Support Coordinate travel arrangements and prepare clear itineraries, meeting logistics, and related materials. Prepare, organize, and proofread presentations, correspondence, reports, agendas, and other business documents. Process expense reports, organize receipts and supporting documentation, and follow up on outstanding items. Track commitments, action items, and follow-ups arising from meetings or executive requests. Serve as a professional liaison with internal teams, customers, contractors, vendors, and other external contacts. Handle sensitive information with discretion and provide support on special projects as assigned. Reception & Administrative Support Greet employees, visitors, contractors, delivery personnel, and maintenance providers; issue visitor badges and direct guests appropriately. Answer and route calls to the main office line and monitor shared voicemail and email for time-sensitive needs. Schedule meetings, prepare conference rooms, assist with virtual meeting technology, and coordinate room presentations and materials. Maintain office directories, distribution lists, records, files, nameplates, and other workplace information. Provide document preparation, scanning, copying, filing, shipping, and general administrative assistance across departments.

REQUIRED QUALIFICATIONS

Associate degree, technical school credential, or college coursework. Three or more years of progressively responsible experience in office administration, office management, executive support, or a related role. Strong proficiency with Microsoft 365 applications, including Outlook, Word, Excel, PowerPoint, and Teams, with the ability to learn additional business systems. Excellent written and verbal communication skills and the ability to work effectively with employees and external contacts at all levels. Demonstrated discretion, professionalism, and sound judgment when handling confidential information. Strong organization, prioritization, problem-solving, and follow-through, with the ability to manage multiple responsibilities independently. Service-oriented, approachable, and comfortable working both independently and collaboratively in a small-team environment.

PREFERRED QUALIFICATIONS

Bachelor's degree. Experience supporting a senior leader and coordinating office operations, facilities, vendors, or workplace services. Administrative experience in the energy or midstream industry.

WORK ENVIRONMENT & SCHEDULE

Full-time, on-site position in the Houston corporate office. The role requires regular front-office presence and the ability to handle routine office supplies, packages, and workplace setup activities. #J-18808-Ljbffr Page Mechanical Group, Inc.