Administrative Assistant

One-Source-Security; Merrimack (NH); On-site; USD 28,000 - 34,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401k with company match

Paid time off

Job summary

One Source Security in Merrimack, NH is seeking an Administrative Assistant to provide branch-wide support, handle phones, greet visitors, manage files, and assist with data entry, scheduling, and vendor coordination.

You will monitor customer accounts, follow up on past-due invoices, assist with accounts receivable reporting, process payroll time entries, and ensure time-entry accuracy while protecting confidential information.

Qualifications

• High school diploma or equivalent required.
• 2+ years of administrative/office experience.
• Proficiency with Microsoft Office (Word, Excel, Outlook).
• Strong organizational, communication, and time-management skills.
• Ability to manage multiple priorities in a fast-paced environment.
• Ability to handle confidential information with discretion.

Responsibilities

• Provide general administrative support to branch employees and management.
• Answer phones, greet visitors, and handle correspondence.
• Maintain accurate files and records; assist with data entry and scheduling.
• Order and manage office supplies; coordinate with vendors.
• Monitor customer accounts and follow up on outstanding balances.
• Contact customers regarding past-due invoices and document collection efforts.
• Assist with accounts receivable reporting and month-end processes.
• Collect, review, and enter employee time into the payroll system.

Skills

Microsoft Excel

Microsoft Word

Microsoft Outlook

Organizational skills

Communication skills

Time management

Education

High school diploma or equivalent

Tools

Payroll time-entry systems

Job description

DU Family of Companies is a network of fire protection, life safety, and security service companies, protecting people and property across 35+ branches in 11 states. Founded in 1994, One Source Security, headquartered in Merrimack, NH, is a full-service security provider specializing in commercial and residential security systems, access control, video surveillance, locksmith services, and customized integrated solutions. With more than three decades of experience, the company assesses security risks, designs tailored systems, and provides 24/7 support to help keep homes and businesses protected. Living our motto, ‘we protect what you value most,’ One Source Security offers a challenging and rewarding work environment for those passionate about keeping communities safe.

Due to continued growth, we are looking to add an Administrative Assistant to our Merrimack, NH team. This role provides administrative support across the branch while assisting with collections, accounts receivable, payroll time entry, scheduling, and general office operations. Success in this role requires strong organizational skills, attention to detail, professional communication, discretion, and the ability to manage multiple priorities in a fast-paced environment.

Key Responsibilities:

• Provide general administrative support to branch employees and management.
• Answer phones, greet visitors, and handle incoming and outgoing correspondence.
• Maintain accurate files, records, and supporting documentation.
• Assist with data entry, scheduling, and other clerical responsibilities.
• Order and manage office supplies and coordinate with vendors as needed.
• Monitor customer accounts and follow up on outstanding balances.
• Contact customers regarding past-due invoices and document collection efforts.
• Assist with resolving billing discrepancies and applying customer payments.
• Support accounts receivable reporting and month-end processes.
• Collect, review, and enter employee time into the payroll system.
• Verify the accuracy of employee hours, job codes, and required approvals.
• Coordinate with supervisors to resolve time-entry discrepancies.
• Protect confidential employee, customer, and company information.
• Perform other administrative duties and special projects as assigned.

Qualifications:

• High school diploma or equivalent.
• At least two years of administrative, accounts receivable, or related office experience.
• Proficiency with Microsoft Office, including Word, Excel, and Outlook.
• Strong organizational, communication, and time-management skills.
• Strong attention to detail and commitment to accuracy.
• Ability to manage multiple priorities in a fast-paced environment.
• Ability to communicate professionally with customers, vendors, employees, and management.
• Ability to handle confidential information with discretion.
• Ability to work independently and as part of a team.

Preferred Qualifications:

• Experience in the security, construction, fire protection, or a related industry.
• Familiarity with collections and accounts receivable processes.
• Experience with payroll time-entry or timekeeping systems.

Physical Demands & Work Environment:

• Work primarily in a standard office environment.
• Sit and use a computer for extended periods.
• Regularly use hands and fingers to operate a computer, telephone, and standard office equipment.
• Occasionally stand, walk, bend, and reach to access files, supplies, and office equipment.
• Occasionally lift and carry office supplies or related materials weighing up to 15 pounds.

The wage for this role is $20 to $25 per hour, based on experience and qualifications.

As part of the DU Family of Companies, we believe that empowering and investing in our employees as leaders develops an organization that delivers innovative solutions and services that create a superior customer experience. The unique blend of our leader's abilities and the ownership of their work, combined with our culture and values, creates something that is simply described as the Davis-Ulmer difference.

Why Choose DU Family of Companies?

• Competitive Compensation - We offer a competitive wage based on your experience and qualifications.
• Comprehensive Benefits Package - Receive medical, dental, and vision insurance, a 401(k) with company match, and paid time off.
• Strength of the Family - As part of the DU Family of Companies, you gain the stability and resources of a growing network of industry-leading companies.
• Backed by APi Group - Benefit from the support and opportunity that come with being part of a global leader in safety services.
• Long-Term Career Relationships - We are committed to developing our employees and supporting long-term career growth.
• Values Match - Join a team that shares your commitment to safety, integrity, and service.

Davis-Ulmer Family of Companies is an Equal Opportunity Employer. We are committed to creating an inclusive environment for all employees and applicants. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

DAVIS-ULMER'S ENDURING PURPOSE: “To protect what people value most.”

All offers of employment are expressly contingent upon the satisfactory completion, in accordance with Company policy, of a pre-employment drug screening and background check.

Equal Opportunity Employer, including disabled and veterans.