Accounting Assistant, Senior

WCSO; Hillsboro (OR); On-site; USD 87,513,000 - 106,249,000; Full time

Job summary

Washington County in Hillsboro, OR invites applications for a Senior Accounting Assistant in Tax Roll Administration. This in-person position reports to the Tax Roll Administration Supervisor and supports data accuracy across the Assessment & Taxation units.

The role requires strong data skills, cross-system collaboration, and reliable financial recordkeeping. Criminal background check is required along with a relevant degree or experience.

Qualifications

• Knowledge of financial and accounting recordkeeping practices and procedures.
• Knowledge of modern office methods and procedures and computer equipment.
• Knowledge of basic mathematical principles.
• Ability to maintain and balance a variety of financial records, ledgers, and accounts.
• Ability to perform procedures in an organized and accurate manner.

Skills

Financial recordkeeping

Office computer skills

Mathematical proficiency

Data accuracy

Collaboration

Education

Associate's Degree in accounting or related field

Accounting certificate

5+ years related experience

Job description

## Accounting Assistant, SeniorApply: In Person Only: Hillsboro, OR: Full time: Posted Today: End Date: November 2, 2026 (15 days left to apply): R589**Note**: This job will be posted through 11:59 PM of the day **prior** to the end date listed.**Current Washington County Employees:** Please apply through the employee portal to be considered for this opportunity.**Job Type:**Regular**Pay Range:**$30.53 - $37.08 Hourly**Department:**Assessment & Taxation**FLSA Exemption Status:**Non-Exempt**About the Opportunity:**The Senior Accounting Assistant in Tax Roll Administration is a lead position reporting directly to the Tax Roll Administration Supervisor. The Tax Roll Administration unit consists of a team of 10 team members: the Supervisor, two Data System Specialists, two Senior Accounting Assistants, one Senior Administrative Specialist, one Geographic Information Systems Technician II, and three Administrative Specialist II. The Tax Roll Administration unit works closely with the Appraisal, Tax, and Cartography business units to perform a variety of assessment administration duties. The role of the Senior Accounting Assistant is to ensure that the data on the primary computer system, Assessment and Tax Pro, is accurate and complete. This position requires strong computer and data skills, along with the ability to work with different business systems and/or applications. Sound judgment is essential when dealing with unusual or complex business cases. Additionally, strong communication and collaboration skills are required when working with subject matter experts in other business units to resolve issues and ensure accurate calculations.**Ideal Knowledge, Skills, and Abilities (KSAs):*** Knowledge of financial and accounting recordkeeping practices and procedures;* Knowledge of modern office methods and procedures and computer equipment;* Knowledge of basic mathematical principles;* Ability to maintain and balance a variety of financial records, ledgers, and accounts;* Ability to perform procedures in an organized and accurate manner.*To review the complete classification, including the full list of knowledge, skills, and abilities (KSAs) associated with this position, use this link:* *https://www.washingtoncountyor.gov/hr/job-class/6***Minimum Qualifications*** Possession of an Associate's Degree in accounting, business, or related field AND two (2) or more years of work experience related to accounting, bookkeeping, or fiscal management; OR* Accounting Certificate (12 months) AND three (3) or more years of work experience related to accounting, bookkeeping, or fiscal management; OR* Five (5) or more years of work experience related to accounting, bookkeeping, or fiscal management. **Additional Requirements*** Criminal background check. **About the Team** • 1 Tax Roll Administration Supervisor • 2 Senior Accounting Assistants • 1 Senior Administrative Specialist • 2 Data Systems Specialists • 3 Administrative Specialist II's • 1 Graphic Information Systems Specialist II **Selection Process:**You can review our standard selection process here. **Our commitment to you:** Washington County is an equal opportunity employer committed to using a merit-based system in which recruiting, selecting, and advancing employees is based on knowledge, skills, and abilities. Our organization embraces innovation, collaboration, and work-life harmony. We promote employee development and offer an award-winning benefits and wellness program as well as an opportunity to serve and support our vibrant community*.***Veterans' Preference:** If you are a Veteran and would like to be considered for Veterans' preference for this recruitment, please review the instructions using this link: Veterans' Preference Points. **Accommodation under the Americans with Disabilities Act:** Reasonable accommodation is available to anyone whose specific disability prevents them from completing this application or participating in the selection process for this recruitment. To obtain confidential assistance please contact Human Resources 503-846-8606, or email: [e-mail] at least 48 hours before any step in the recruitment and selection process for which you feel you need accommodation. **Status of Your Application:** You will be advised by email of your status at each step in the application process, from initial application to final employment disposition. Please note that Washington County communicates with all candidates via email. **Notice:** Washington County is currently undergoing a comprehensive classification and compensation study. The purpose of this project is to create new job descriptions and create new classification and compensation systems. Outcomes of the project will include changes to classification titles, which could impact compensation structures. **No one will have their pay rate lowered** because of this project. For represented positions, appropriate bargaining processes will be utilized prior to implementation.