Administrative Coordinator

Job Title: Administrative Coordinator
Location: Bozeman, Montana
Company: OnSite Energy
Industry: Residential & Commercial Solar Installation
Position Type: Full-Time
Compensation: (DOE) + Benefits

About OnSite Energy

OnSite Energy is a Bozeman-based, employee-centered solar installation company committed to making a meaningful difference. As a certified B Corporation, we believe in supporting our people, our community, and our planet. Our culture is rooted in collaboration, work-life balance, and continuous improvement, not just volume or profit. We are a tight-knit team that empowers individuals, avoids micromanagement, and constantly looks for ways to do things better—for our clients, our community, and each other.

Position Summary

We are seeking a motivated and detail-oriented Administrative Coordinator to help lead and manage OnSite Energy’s office and administrative operations. This position is perfect for someone with a background in construction or the trades, who thrives in both autonomous and collaborative environments, and who is looking for meaningful work in the clean energy industry.

The Administrative Coordinator will be a central hub of our company’s operations, supporting multiple departments—from accounting and HR to sales and service. If you enjoy wearing multiple hats, finding better ways to get things done, and being part of a purpose-driven organization, we’d love to hear from you.

Key Responsibilities

• Office Administration
  
  
  
  • Monitor and optimize phone and internet services; maintain adaptive phone tree for staff availability and variable schedules
  
  
  • Oversee business license renewals, industry memberships, and subscriptions
  
  
  • Receive and distribute USPS mail
  
  
  • Maintain office supply levels and coordinate procurement
  
  
  
  


• Accounting Support
  
  
  
  • Support the Accounting Manager as needed on data management tasks, including:
    
    
    
    • Accounts payable and receivable, expense reports, credit card and bank reconciliations, updating vendor and customer records
    
    
    • Payroll support
    
    
    • Internal financial reporting
      
    
    
    
    
  
  
  
  


• Customer Reception & Intake
  
  
  
  • Answer phones and monitor general company email
  
  
  • Qualify and assign new leads, and create service tickets for existing customers
  
  
  • Log information in customer relationship management (CRM) software
    
  
  
  
  


• Project Administration
  
  
  
  • Assist with collecting subcontractor packets from vendors and subcontractors
  
  
  • Coordinate with insurance providers, government agencies, and local jurisdictions to meet
    project and contractual requirements
    
  
  
  
  


• Human Resources Administration
  
  
  
  • Serve as a liason between OnSite Energy and our employee benefits providers
    
    
    
    • Submit and document employee enrollment changes
    
    
    
    
  
  
  • Support onboarding and offboarding of employees
  
  
  • Administer wage and withholding updates
  
  
  • Upload and manage employee documents in HR software
    
  
  
  
  


• Insurance Coordination
  
  
  
  • Serve as liaison between OnSite Energy and our insurance carriers
  
  
  • Facilitate workers comp and general liability reporting, payroll audits, and exposure estimates
  
  
  • Coordinate insurance renewals and communicate policies to employees
  
  
  • Maintain current staff and vehicle records with carriers
  
  
  
  

What We're Looking For

• Previous experience in administration, operations, or office management


• Familiarity with the construction or solar industries strongly preferred


• Excellent organizational and communication skills


• Tech-savvy and comfortable with tools like Google Workspace, Excel, and CRM/HR software
  
  
  
  • Prior experience with BambooHR software strongly preferred
  
  
  
  


• Highly self-motivated, detail-oriented, and proactive


• Excited to contribute ideas and help improve internal systems and processes


• Team player who enjoys supporting others and growing with a purpose-driven business

Why Work With Us?

• Autonomy and trust – no micromanagement, collaborative environment


• Supportive team – mentorship, cross-training, and shared success


• Make an impact – help shape our admin department and future growth


• B Corp values – people, planet, and purpose over just profit


• We’re more than a solar company—we’re a mission-driven team committed to creating lasting impact in
  our community and our industry. We foster a supportive, empowered, and fun work environment,
  and we believe that happy, fulfilled employees do their best work. At OnSite, you’ll be encouraged to
  grow, speak up, take initiative, and help shape the future of our company and the energy landscape.

Compensation & Benefits

• Salary: TBD (based on experience)


• Time Off: 10 paid holidays, plus paid vacation and sick leave


• Health & Wellness:
  o Employer-paid health insurance for employee
  o Optional dental, vision, and Aflac plans
  o Paid parental leave


• Retirement: 401(k) with employer match


• Other Perks: Cell phone reimbursement, 40 hours paid education time, paid volunteer time, annual year-end bonus

Ready to Join the Team?

If you're an experienced Administrative Coordinator with a passion for clean energy, a drive for quality work, and a desire to grow with a mission-driven company—apply today!

Please submit your resume and a brief note about why you’re interested to this posting!