Accounting Assistant, Senior

Washington County, Oregon • Hillsboro, OR • Full Time • $30.53–$37.08 / hour

Posted on Sun, Oct 11, 2026

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:

Land Use & Transportation (LUT)

FLSA Exemption Status:

Non-Exempt

About the Opportunity:

PURPOSE

The Senior Accounting Assistant classification performs accounting work of a moderately complex nature including maintaining cost records, account controls, and fiscal records.

DISTINGUISHING CHARACTERISTICS

The Senior Accounting Assistant is the advanced journey level class in the Accounting Assistant series. Positions at this level are distinguished from other classes within the series by the level of responsibility assumed and the complexity of duties assigned. Employees perform the most difficult and responsible types of duties assigned to classes within this series. Employees at this level are required to be fully trained in all procedures related to the assigned area of responsibility.

SUPERVISION RECEIVED AND EXERCISED

The Senior Accounting Assistant receives general supervision from assigned management staff.
The Senior Accounting Assistant may exercise supervision over assigned accounting and administrative support staff.

ESSENTIAL JOB DUTIES

Duties may include, but are not limited to, the following:

1. Maintains a chart of accounts; maintains and audits various ledgers, registers, and journals according to established account classifications; creates journal vouchers.

2. Prepares, reviews, and posts journal entries to the County financial system and reconciles general ledger account balances; researches and resolves reconciliation issues as necessary.

3. Prepares invoices for contracts and receives and records payments on these contracts.

4. Prepares journal entries to record various expenditure transactions.

5. Assists in creating a positive and supportive work environment; enforces a safe workplace; establishes a culture of teamwork and communication; creates a workplace that promotes the organizational values of access and opportunity and actively promotes an environment respectful of living and working in a society accepting of all.

6. Provides functional and technical information and instructions regarding applicable procedures and methods; interprets and explains rules and regulations; answers questions and resolves problems and complaints.

7. Maintains payment and retainage records for construction and engineering contracts.

8. Coordinates input to Cost Accounting System; edits and reconciles cost accounting reports.

9. Researches and answers department questions regarding status of accounts, the proper coding of transactions, and other matters.

10. Prepares and records trust payment vouchers and verifies money in the accounts.

11. Processes land sale contract payments, making interest and principal calculations; makes journal entries.

12. Receives and records reports on the State Investment Pool and makes appropriate journal entries.

13. Coordinates the initial creation of assessment accounts.

14. Assists with preparation of financial reports and the schedules needed for annual financial audits; assists with project audits.

15. Audits journal entries, cash transmittals, trust and agency releases.

16. Administers accounts receivable program; maintains files of invoices issued by county departments; prepares cash transmittals.

KNOWLEDGE, SKILLS AND ABILITIES

Knowledge of:

Skills to:

Ability to:

MINIMUM QUALIFICATIONS

Education and Experience:
A typical way to obtain the knowledge and abilities would be:

ADDITIONAL LICENSES, CERTIFICATES, PHYSICAL ABILITIES AND SPECIALTY REQUIREMENTS


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: Careers@WashingtonCountyOR.gov 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.

Questions?

Recruiter:

Brighton Bohnenkamp

Email Address:

Brighton_Bohnenkamp@washingtoncountyor.gov

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