Administrative Support Specialist

Arapahoe County Government; Littleton (CO); On-site; USD 30,000 - 45,000; Full time

Job summary

Arapahoe County Government is seeking an Administrative Support Specialist to assist the Treasurer’s Office in Littleton, CO. The role involves daily administrative tasks, tax payments preparation, and customer-facing support in a public sector setting.

Qualifications include a high school diploma and 2+ years of admin experience or 1+ year in the public sector, plus strong MS Office and data-tracking abilities. Some remote work may be allowed after six months.

Qualifications

• Requires a high school diploma and 2+ years of administrative experience or 1+ year in public sector.
• Proficiency in Microsoft Office (Word, Excel, Outlook) and attention to detail.
• Ability to manage multiple tasks with deadlines and provide courteous customer service.

Responsibilities

• Coordinate and complete daily operational tasks for the Treasurer’s Office, including supplies and ticket tracking.
• Assist with correspondence, CORA requests, and data research coordination.
• Process invoices and payments in SAP; handle large dollar purchases when needed.
• Update data entry and tracking across software systems; support field collection planning.
• Collaborate with Tax Compliance and Collections to organize daily/weekly activities.
• Perform other duties as assigned.

Skills

Attention to detail

Problem-solving

Multi-tasking

Customer service

English literacy

Microsoft Office

Education

High school diploma

2+ years administrative experience OR 1+ year public sector

Tools

SAP

Microsoft Office

Excel

Outlook

Job description

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Title: Administrative Support Specialist

Job Number:854
Salary:$21.59-$32.35
Department/Office: Treasurer's Office
Division: Treasurer
Location: 5334 S. Prince St., Littleton, CO, 80120
Job Type:Hourly Full-Time
Posting Date: 10/19/2026
Closing Date: 11/02/2026

The Arapahoe County government serves its communities in ways both obvious and obscure. As the beating heart of local and regional government, we’re here for our neighbors on their best days—and their worst. We share our residents’ goals of preserving our quality of life and strive to be the place we’re proud to call home.

GENERAL DESCRIPTION OF JOB:

The Administrative Support Specialist position works closely with the Office Operations & Support Supervisor to manage, track, and complete all daily, weekly, monthly, and annual administrative and customer service tasks within the Treasurer’s Office. They are also responsible for aiding the Tax Compliance Representative / Collections Specialist within the Compliance department of the Treasurer’s Office to better organize and track field collection activities.

DUTIES:

• Assists in coordinating and completing daily operational tasks for the Treasurer’s Office including but not limited to; management of supplies; FIX Ticket logging and tracking; audit request tracking; preparing tax payments and forwarding to Bookkeeping Department; answering phone calls from and assisting with face-to-face interactions with the public as needed; etc.
• Assists with correspondence within the Treasurer’s Office, including but not limited to email inquiries directed to the Treasurer’s Office as a whole, returned checks, other formal communications, CORA requests, and coordinating data research requests.
• Assists with invoices and payment processing within SAP accounting software, and performs large dollar purchase processes, when necessary, such as postage.
• Assisting with returned mail, data tracking, and updating data entry within software systems as needed.
• Coordinating with Tax Compliance Representative / Collections Specialist to create daily and weekly organization plans for field collection activities.
• Other duties as assigned.

REQUIREMENTS:

Skills, Abilities and Competencies:

• Ability to use attention to detail and problem-solving skills to identify errors and offer solutions.
• Ability to organize, track, and complete several overlapping tasks with various deadlines on time and with accuracy.
• Personal communication skills enabling courteous and diplomatic interactions with the general public, elected officials, county employees, and other government officials.
• Ability to read, write and clearly and concisely speak the English language.
• Intermediate skills with Microsoft Office products including Word, Excel, Outlook, etc.

Behavioral Competencies (these are required for all positions at ACG):

Accountability Accessibility Inclusivity Integrity

Education and Experience:

• High school diploma
• 2+ years administrative experience OR 1+ year experience working in a public sector position.
• A combination of education and experience may be considered

Preferred Education and Experience:

• 1+ years’ administrative experience within the public sector.
• Ability, interest, and / or aptitude to work within, understand, create, and / or manipulate complicated spreadsheets.

Additional Pre-Employment Requirements:

• Must successfully pass pre-employment testing which may include an acceptable motor vehicle record (MVR) and background check.

WORK ENVIRONMENT:

• Work is generally confined to a standard office environment.
• May be eligible to work from home at least one day week after 6 months.

PHYSICAL DEMANDS:

The following are some of the physical demands commonly associated with this position.

• Spends 75% of the time sitting and 25% of the time either standing or walking.
• Verbal and auditory capacity enabling constant interpersonal communication through automated devices, such as telephones, radios, and similar; and in public meetings and personal interactions.
• Constant use of eye, hand and finger coordination enabling the use of automated office machinery or equipment.
• Visual capacity enabling constant use of computer or other work-related equipment.

Below, please list any special physical demands associated with this position. For instance, exposure to hazardous environments, blood borne pathogens, extreme heat/cold, use of power equipment or machinery, wearing of PPE (personal protective equipment).

Definitions:

Occasionally: Activity exists less than 1/3 of the time.

Frequently: Activity exists between 1/3 and 2/3 of the time.

Constantly: Activity exists more than 2/3 of the time.

Arapahoe County does not discriminate on the basis of race, color, religion, national origin, sex, age, disability, genetic information, sexual orientation or any other status protected under the law. It is our intention that all qualified applicants be given equal opportunity in any term, condition, or privilege of employment and that selection decisions are based on job-related factors. Arapahoe County is committed to making employment accessible to persons with disabilities.

In accordance with Senate Bill 23-058, applicants understand that Arapahoe County will not request or require the applicant to include their age, date of birth, or date of attendance/graduation date on the initial application. Applicants understand that Arapahoe County can request or require an individual to provide documentation including copies of certification, transcripts, and other materials created by a third party. The applicant understands that the applicant can redact, if they so choose, information that identifies age, date of birth, or dates of attendance/graduation from an educational institution on those requested/required certification, transcripts and other materials created by a third party.