Office Administrator

TerraFlow Energy builds redox flow battery systems for long-duration energy storage. We are scaling from early manufacturing toward Gigafactory capacity, and our Katy facility is the operational center of that work. This is a hands-on environment where people move fast and take ownership of the details.

POSITION SUMMARY:

The Office & Administrative Coordinator keeps our Katy facility running and provides day-to-day administrative support across the business. This is a broad, tactical role built for someone who takes pride in a well-run office and who would rather be handed a problem than a script.

You will be positioned at the front desk in the lobby, serving as the first point of contact for the small number of visitors, guests, and deliveries we receive. Front-desk coverage is a secondary function of the role — the majority of your time will be spent on office management and administrative execution.

KEY RESPONSIBILITIES:

Front Desk & Reception

• Serve as the first point of contact for visitors, candidates, vendors, and guests arriving for meetings
• Receive and route deliveries; notify recipients promptly
• Maintain a clean, professional, and presentable lobby and front-desk area
• Support visitor sign-in and badging procedures as needed

Office & Facilities Management

• Manage third-party office services including janitorial/cleaning, coffee service, water, plants, and other recurring vendors; serve as day-to-day point of contact and escalate service issues
• Maintain inventory and reorder office supplies, break room supplies, and pantry stock
• Own company swag inventory — track stock levels, reorder through approved vendors, organize storage, and distribute for new hires, events, trade shows, and visitor gifting
• Keep conference room and office mini-fridges stocked and clean
• Ensure boardrooms and conference rooms are clean, stocked, and set up before use, and reset after use
• Order, receive, and set up catering for meetings; manage headcounts, dietary needs, setup, and cleanup
• Track office-related spend against budget and flag variances; process invoices and vendor paperwork as directed
• Partner with IT and Facilities on office-related requests, room readiness, and new-hire desk setup
• Identify and act on opportunities to improve how the office runs

Administrative Support

• Handle shipping and receiving for office-related packages (FedEx, UPS, courier); prepare outbound shipments
• Check and distribute incoming mail; drop off outgoing mail at USPS as needed
• Support company events, meetings, and on-site visits with logistics and setup
• Additional administrative duties as assigned

QUALIFICATIONS:

Required

• 2 years of experience in office coordination, administrative support, facilities coordination, or a comparable role
• High school diploma or equivalent
• Proficiency with Microsoft 365 (Outlook, Word, Excel, Teams, SharePoint)
• Strong written and verbal communication; professional presence with visitors and vendors
• Demonstrated ability to manage multiple requests from multiple stakeholders and prioritize independently
• High attention to detail and a strong sense of ownership and follow-through
• Ability to maintain confidentiality and exercise discretion
• Ability to work on-site in Katy, TX five days per week
• Ability to lift and move up to 25 lbs (supplies, packages, catering setup)

Preferred

• Experience supporting a startup, manufacturing, energy, or other fast-growth environment
• Experience managing vendor relationships and service contracts
• Familiarity with expense and procurement systems
• Associate's or Bachelor's degree

Pay: From $15.00 per hour

Benefits:

• 401(k)
• 401(k) matching
• Dental insurance
• Health insurance
• Life insurance
• Paid time off

Work Location: In person

Salary : $15