Office Administrator

Mission Critical Group (MCG) is an end-to-end power solutions and services provider that accelerates time-to-power and delivers scalable, resilient infrastructure for mission critical environments. By integrating engineering, manufacturing, modular deployment, and lifecycle services under one platform, we streamline execution and bring complex projects online faster - without compromising performance. With a robust U.S. manufacturing network, MCG supports data centers, power generation, healthcare, oil & gas, pharmaceuticals, semiconductors, and industrial facilities where uptime is non-negotiable. Mission Critical Group designs, manufactures and provides value-added services for customers requiring critical power solutions. Powering a new electric world for a brighter, more secure future.

The Office Administrator serves as the central point of coordination for office operations, providing administrative, facility, and organizational support across multiple departments. This role is responsible for maintaining an efficient and professional workplace environment while managing office resources, vendor relationships, employee events, and day-to-day administrative functions that support both office and manufacturing personnel.

Responsibilities

• Oversee the day-to-day operations of the office, ensuring a professional, organized, and efficient work environment for employees, visitors, and vendors.
• Serve as the primary point of contact for incoming calls, emails, visitors, and general inquiries, while coordinating calendars, meetings, conference rooms, and reception activities.
• Coordinate visitors, customer meetings, and vendor visits, maintaining visitor logs and reception processes while ensuring conference rooms, meeting spaces, and common areas are prepared and professional.
• Prepare, format, distribute, and maintain business documents, records, filing systems, employee communications, and other company documentation.
• Maintain office, breakroom, and janitorial supply inventories; coordinate purchasing activities; and stock snacks, beverages, and other consumable supplies to support both office and production personnel.
• Manage office equipment, service agreements, and vendor relationships to ensure equipment functionality, timely maintenance, and efficient facility operations.
• Coordinate with Human Resources to support new hire onboarding activities, including preparing workspaces and distributing onboarding resources.
• Coordinate employee events, company celebrations, facility lunches, catered meals, and other employee engagement activities while managing budgets and vendor relationships.
• Process invoices, reconcile receipts, and support basic bookkeeping and administrative accounting functions.
• Provide cross-functional administrative support to Operations, Human Resources, Finance, and other departments, assisting with daily office functions, reporting, workplace improvement initiatives, and special projects as needed.
• Maintain the cleanliness, organization, and professional appearance of office, meeting, and common areas.
• Perform other duties and special projects as assigned.

Required Knowledge, Skills & Abilities

• Strong verbal and written communication skills with the ability to interact professionally with employees, customers, vendors, and visitors.
• Excellent organizational, time management, and prioritization skills, with the ability to manage multiple responsibilities in a fast-paced environment.
• Self-motivated and resourceful, with strong attention to detail and the ability to work independently with minimal supervision.
• Ability to maintain confidentiality and exercise discretion when handling sensitive information.
• Proficiency with Microsoft Office Suite and the ability to learn new software and systems.
• Strong customer service, problem-solving, and interpersonal skills.
• Ability to regularly lift and transport office supplies, beverages, and other materials throughout the facility.

Required Education & Experience

• High school diploma or GED required.
• 1-3 years of administrative, office management, office coordinator, executive assistant, or related experience.
• Experience supporting office operations, coordinating schedules and meetings, managing records, and interacting with vendors and customers.
• Experience in handling confidential information and maintaining accurate documentation.

A Note to our Recruitment Partners: We really appreciate the interest, but MCG currently manages hiring through our internal team. We love getting to know our candidates directly! Because of this, we don’t accept unsolicited resumes from agencies at this time. If we ever need an extra hand, we’ll be sure to reach out to the community. Thanks for understanding!

MCG is an equal opportunity employer prohibiting discrimination based on race, color, creed, religion, sex, marital status, physical or mental disability, and any other protected classes stated by applicable federal and state laws. MCG is committed to providing equal employment opportunities to qualified individuals with disabilities and to act in accordance with regulations and guidance issued by the Equal Employment Opportunity Commission (EEOC).