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.

• Oversee day to day functions, maintaining organization, managing vendors and ensuring positive environment
• Answer phone and emails, manage correspondence, schedule and prepare documents (memos, reports, invoices)
• Maintain office supply inventory and place orders when needed
• Manage office equipment
• Organizing and maintaining digital and physical files, databases and company records
• Assist with onboarding new hires when requested, coordinate team events and find vendors to support our needs within the budget parameters. Supporting various departments as needed
• Processing invoices and handling basic bookkeeping
• Sending daily schedules to the Manufacturing Manager and offering additional support as needed
• Ensure the lobby area and kitchenette are consistently clean, organized and guest‑ready
• Perform other duties as assigned

• Excellent communication and collaboration skills
• Self‑motivated. Good time management skills. Able to set own goals and determine how to accomplish these with minimal guidance
• Integrity & confidentiality:
  Honest and ethical, able to handle sensitive information and keep in confidence
• Time management and prioritization skills
• Customer service experience
• Basic accounting or bookkeeping knowledge

• 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).