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Administrative Assistant III

Fairfax County Government
$45,255.39 - $75,424.96 Annually
medical insurance, dental insurance, vision insurance, child care, retirement plan
United States, Virginia, Fairfax
Nov 22, 2025

Job Announcement

Performs a variety of administrative and technical support duties in the Human Resources Branch of the Sheriff's Office. Work involves assisting with the processing and maintaining personnel and payroll transactions, assisting with recruitment, and onboarding activities, and providing clerical and operational support to ensure the efficient delivery of human resources services to sworn and civilian staff. Incumbents are expected to exercise discretion and maintain confidentiality in handling sensitive employee information and records. Serves on a variety of teams and works on special projects as assigned. Demonstrates sound judgment, maintain confidentiality, and provide professional customer service in a fast-paced, public-safety environment.

  • Provides administrative and clerical support to the Human Resources team, including data entry, filing, scheduling, and correspondence preparation.
  • Assists with the coordination of recruitment activities such as job postings, applicant tracking, scheduling interviews, and communicating with candidates.
  • Assist with payroll processes and personnel actions and timekeeping documentation
  • Assist with maintaining accurate documentation related to Family and Medical Leave Act (FMLA), Workers' Compensation, and other job-protected leave programs.
  • Supports the onboarding process by preparing employee files, assisting with orientation materials, and ensuring completion of required forms and checklists.
  • Responsible to the updates of confidential personnel records, logs, and databases in accordance with county and agency policies.
  • Responds to routine employee inquiries regarding leave, benefits, and HR procedures.
  • Compiles data and assists in the preparation of reports, organizational charts, and workforce tracking tools.
  • Provides administrative support for HR projects, audits, and compliance initiatives.
  • Performs related duties as required.

Functional areas: human resources, general administration, records management and/ or customer service support.


Illustrative Duties

(The illustrative duties listed in this specification are representative of the class but are not an all-inclusive list. A complete list of position duties and unique physical requirements can be found in the position job description.)

Purchasing
Orders goods or services and follows up/resolves discrepancies and ensures delivery;
Authorizes requests for goods and services in corporate systems;
Ensures appropriate routing and approval of purchase requests.

Scheduling & Coordinating for Others
Maintains calendar(s);
Schedules meetings;
Makes and cancels appointments;
Schedules rooms for classes, meetings, conferences, etc.;
Coordinates audiovisual, training equipment, refreshment requests;
Set up schedules for internal administrative staff to insure that they are available to meet changing work needs.

Communication
Composes routine correspondence on behalf of the executive/work unit head.

Office Management
Provides administrative support and implements procedures;
May supervise others;
Establishes/modifies and maintains a system for tracking the progress of work that is the responsibility of the executive/work unit head;
Trains and orients new employees;
Provides and explains relevant policies and procedures.

General Administrative
Composes routine correspondence on behalf of the executive/work unit head.

Receptionist/Public Contact
Schedule appointments;
Explains departmental policy/procedure but does not interpret them;
Responds to inquiries that require referencing a variety of sources and utilizing
knowledge of the department/county operations.

Word Processing/Typing
Keys/types complex documents (e.g., technical);
Proofs spelling and grammar;
Uses multiple software packages to prepare equations, statistics, tables and/or presentations;
Compiles reports from edited drafts;
Uses macros and templates developed by others.

Information Systems/Software
Performs data entry with some knowledge of department/work unit/program;
Manipulates screens for additional entries;
Generates routine reports;
Creates simple spreadsheets;
Maintains databases.

Reports
Compiles routine factual/numerical reports using readily available information.

Payroll
Processes pay adjustments;
Transmits on-line T&As;
Regularly inputs routine Human Capital Management Enterprise Resource Planning system entries;
Performs payroll functions (e.g., internal collection of time sheets, verify T&A entries, verify leave slips);
Trains new employees on how to do on-line time.

Personnel
Prepares and verifies completeness/accuracy of forms/documents (e.g., personnel requisitions, PARS, PCFs);
Provides basic new employee benefits information;
Explains routine personnel policies and procedures;
Gathers information (e.g., salary range, class specifications, and merit adjustments) from HR website or other county sources for supervisor/management;
Instructs employees in proper completion of routine documents (e.g., insurance enrollment forms).


Required Knowledge Skills and Abilities

(The knowledge, skills and abilities listed in this specification are representative of the class but are not an all-inclusive list.)
Knowledge of standard rules and interpretations within own functional area and a working knowledge of established methods and procedures used in related areas;
Significant nonstandard skill/knowledge is required involving production of an end product such as a report.

Word Processing/Typing
Basic skills in the use of Microsoft Word.

Math Skills
Basic math skills.

PC Skills
Basic skills in the use of applicable Microsoft Office Suite software.

Communication
Ability to write simple documents.

Information Abilities
Ability to process and integrate complex data.

Interpersonal Abilities
Ability to establish and maintain effective working relationships with both external and internal contacts.

Purchasing and Accounting
Ability to perform data entry into Purchasing/Logistics Enterprise Resource Planning systems and/or Financial Enterprise Resource Planning systems in at least three functions (e.g., create shells, accounts payable processing).

Personnel and Payroll
Ability to perform routine Human Capital Management Enterprise Resource Planning system functions (e.g., process PARS, requisitions).

Executive Assistance
Ability to maintain confidentiality and be sensitive to political issues.


Employment Standards

MINIMUM QUALIFICATIONS:
Any combination of education, experience and training equivalent to high school graduation and two years of experience providing administrative support in the assigned functional area(s).

PREFERRED QUALIFICATIONS:

  • Basic knowledge of HR practices (payroll, personnel assignment changes, onboarding, etc.)
  • Previous experience working with an HR reporting and payroll system (i.e., SAP, FOCUS, Oracle).
  • Skilled Proficient in Microsoft Office applications (Excel, Word, and Outlook)
  • Excellent customer service skills. Must have excellent work ethic and be well organized.

NECESSARY SPECIAL REQUIREMENTS:
The appointee to this position will be required to complete a criminal background check, psychological exam, and polygraph exam to the satisfaction of the employer.

PHYSICAL REQUIREMENTS:
Ability to work effectively under stress and meet deadlines in a timely manner. Ability to communicate clearly & concisely, both oral and written. Work requires the ability to operate keyboard driven equipment, to operate devices with tablet technologies, and to sit for long periods of time. All duties may be performed with or without reasonable accommodations.

SELECTION PROCEDURE:
Panel interview and may include exercise.

Fairfax County is home to a highly diverse population, with a significant number of residents speaking languages other than English at home (including Spanish, Asian/Pacific Islander, Indo-European, and many others.) We encourage candidates who are bilingual in English and another language to apply for this opportunity.

Fairfax County Government prohibits discrimination on the basis of race, color, religion, national origin, sex, pregnancy, childbirth or related medical conditions, age, marital status, disability, sexual orientation, gender identity, genetics, political affiliation, or military status in the recruitment, selection, and hiring of its workforce.

Reasonable accommodations are available to persons with disabilities during application and/or interview processes per the Americans with Disabilities Act. TTY 703-222-7314. DHREmployment@fairfaxcounty.gov. EEO/AA/TTY.

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