Office Administrator & HR Assistant

Mile High Environmental Services Inc.; Aurora (CO); On-site; USD 25,000 - 33,000; Full time

Job summary

Mile High Environmental Services Inc. in Aurora, CO is seeking a dependable office professional to support onboarding, maintain employee records, manage schedules, and serve as the welcoming front desk for clients, applicants, and visitors.

The role focuses on accurate data entry, organized records, and coordinating with management on HR tasks. On-site presence is required, with regular business hours and attentive, customer-focused service.

Qualifications

• Administrative skills to manage daily office operations and HR support tasks.
• Experience with office equipment and basic technology tools (printers, scanners, computers, office software).
• Strong communication with employees, vendors, and clients.
• Customer service to provide responsive support and represent the company professionally.
• Attention to detail and strong organizational skills for records, scheduling, and data entry.
• Prior experience in office administration, HR support, or related role; experience in construction or environmental services is a plus.
• Proficiency with common office software (Microsoft Office or Google Workspace) and comfort working with digital files and databases.
• Ability to work on-site in Aurora, CO, maintain confidentiality, and handle sensitive information discreetly.

Responsibilities

• Employee administration and HR support, including onboarding, forms, and payroll coordination.
• Front desk and office coordination: answering calls, welcoming visitors, routing mail, maintaining front-office area.
• Inventory and maintenance records: entering data into Sortly, reconciling supplies and equipment logs.

Skills

Administrative Skills

Office Administration

Communication

Customer Service

Attention to detail

Organizational skills

Data entry

Tools

Microsoft Office

Google Workspace

Monday.com

Sortly

Job description

Company Description

Mile High Environmental Services Inc. is a specialized environmental and demolition partner serving general contractors, construction management firms, and commercial property owners. The company supports complex renovation and construction projects with services including asbestos abatement, mold remediation, saw cutting, and selective or full demolition. With a focus on predictable schedules, clear communication, and tight site coordination. we emphasize disciplined controls, thorough documentation, and alignment with client safety cultures to ensure compliant, efficient project delivery. Applicants joining the team will be part of a responsive, field-oriented organization that values reliability and professional collaboration.

Role Description

Put your organization and people skills to work

Do you enjoy helping people, keeping details organized, and seeing a task through to completion? Mile High Environmental Services is looking for a dependable, office professional who takes pride in accurate work and clear communication.

MHES is a family-owned asbestos abatement and demolition company serving projects throughout Colorado. Our office supports the field crews who make that work happen. In this role, you’ll help onboard employees, keep certifications and records organized, communicate schedules, and provide a welcoming first impression for clients, applicants, and visitors.

This is more than a receptionist position. It’s a hands-on administrative role for someone who enjoys working with people and maintaining the systems behind a well-run office.

Schedule and availability

You must be available to work on-site Monday through Friday, 8:15 AM–4:30/4:45PM, and be ready to begin work by 8:30 AM. Consistent attendance and punctuality are important because our employees and office team depend on this position for daily support.

The schedule includes a one-hour lunch (30 minutes paid and 30 minutes unpaid) for 38-40 paid hours per regular workweek. Evenings and weekends are off.

What you’ll do:

Employee administration and HR support

• Coordinate new-hire onboarding, including Form I-9 employment eligibility verification, tax forms, direct deposit information, handbook acknowledgments, and setup in company systems.
• Maintain organized, confidential employee files and follow up on missing paperwork.
• Track employee licenses, certifications, refresher training, physicals, and respirator fit tests. Schedule appointments and notify management before renewals become urgent.
• Receive time-off requests, route them to management, communicate decisions, and accurately enter approved leave.
• Review daily attendance and ExakTime records, follow up on missing information, and flag discrepancies before payroll review.
• Send approved employee schedules and jobsite assignments through the company phone.
• Communicate clearly and professionally with employees via text message and phone calls.

Front desk and office coordination

• Answer and route incoming calls, take accurate messages, and welcome employees, applicants, clients, and vendors.
• Help visitors and callers reach the right person or get the information they need.
• Receive and route incoming mail.
• Maintain an organized, welcoming front-office area.
• Keep assigned tasks current in Monday.com and communicate promptly when something is missing, delayed, or requires a management decision.

Inventory and maintenance records

• Enter warehouse picklist, equipment issue, and return information into Sortly.
• Reconcile records for supplies used, equipment returned, and related project costs, flagging discrepancies for review.
• Maintain service and repair logs for company vehicles and large equipment.

No mechanical background is required. This portion of the role focuses on accurate data entry, organized records, and follow-up.

Who will thrive here?

You enjoy being helpful, but you also know how to stay organized and finish your own work. You can answer a call or assist an employee, then return to your task without losing track of the details.

We’re looking for someone who:

• Follows through: Tracks deadlines, completes tasks, and follows up without repeated reminders.
• Works accurately: Checks names, dates, numbers, and documents before marking work complete.
• Communicates early: Asks questions when instructions are unclear and raises concerns before deadlines are missed.
• Uses good judgment: Handles sensitive information discreetly and knows when a decision belongs with management.
• Stays professional: Communicates respectfully with employees, customers, vendors, and coworkers.
• Welcomes feedback: Takes direction, applies corrections, and looks for practical ways to improve.

You will support established processes and will not be expected to make every decision yourself. Management retains responsibility for hiring decisions, leave approvals, crew assignments, and final payroll approval.

Qualifications

• Administrative skills, including Administrative Assistance and Office Administration, to manage daily office operations and HR support tasks.
• Experience working with Office Equipment and basic technology tools (printers, scanners, computers, office software) to maintain efficient workflows.
• Strong Communication skills with the ability to interact clearly and professionally with employees, vendors, and clients.
• Customer Service skills to provide responsive support, handle inquiries, and represent the company professionally in person and over the phone.
• Attention to detail and strong organizational skills for managing records, documentation, and scheduling.
• Prior experience in office administration, HR support, or a related role; experience in construction or environmental services is a plus.
• Proficiency with common office software (e.g., Microsoft Office or Google Workspace) and comfort working with digital files and databases.
• Ability to work on-site in Aurora, CO, maintain confidentiality, and handle sensitive employee and client information with discretion.