Job Description

Posting number: APTA-2026A

Department: County-Wide

Job classification: Administrative Services Assistant III

Posting type: Open

Categories: Administration, Management, Professional

Local 21 - Non-Supervisory Management

Bargaining Unit: Local 21 - Non-Supervisory Management

Why Join Contra Costa County?
Contra Costa County is home to more than one million residents and was one of the original 27 counties established in California in 1850. Contra Costa County provides public services which improve the quality of life of our residents and the economic viability of our businesses. Contra Costa County is recognized as a world-class service organization where innovation and partnerships merge to enable our residents to enjoy a safe, healthy, and prosperous life.

We are pleased to announce a countywide recruitment for the classification of Administrative Services Assistant III. As an Administrative Services Assistant III, you will have the opportunity to contribute to the efficient operation of diverse County departments, each playing a vital role in serving our community. This position offers exposure to various facets of public administration and the chance to collaborate with professionals dedicated to public service.

Currently, vacancies exist in the following departments:

• Department of Information Technology - one (1) vacancy
• Employment and Human Services Department (EHSD) - three (3) vacancies
• Health Services Department - three (3) vacancies

For more information about these departments and their vacancies, please visit the recruitment flyers:

• Department of Information Technology (DoIT)
• Employment and Human Services Department (EHSD)
• Health Services Department

Competencies:

• Strategic Thinking & Perspective Evaluating immediate actions in the context of achieving the long-range objective
• Managing & Facilitating Change Addressing key factors that influence successful organizational change
• Leading Cross-Divisional Collaboration Demonstrating cooperation and teamwork while working within and across divisions and teams
• Project Management Ensuring that projects are on time, on budget, and achieve their objectives
• Leadership Guiding and encouraging others to accomplish a common goal
• Attention to Detail Focusing on the details of work content, work steps, and final work products
• Adaptability Responding positively to change and modifying behavior as the situation requires
• Interpersonal Savvy Considering and responding appropriately to the needs and feelings of others in different situations
• Self-Management Showing personal organization, self-discipline, and dependability
• Professional Integrity & Ethics Displaying honesty, adherence to principles, and personal accountability
• Building & Maintaining Relationships Establishing rapport and maintaining mutually productive relationships
• Professional & Technical Expertise: Applying technical subject matter to the job

Read the complete job description here

The eligible list established from this recruitment may remain in effect for six (6) months and may be used to fill other vacant positions including Administrative Analyst, and Administrative Services Assistant II.

Qualifications

License Required: Possession of a valid California Motor Vehicle Operator's License. Out of state valid motor vehicle operator's license will be accepted during the application process.

Education: Possession of a Bachelor’s degree from an accredited college or university with a major in business administration, public administration or a closely related field.

Experience: Three (3) years of full-time experience or its equivalent in an administrative staff position performing administrative, budgetary or personnel analysis.

Substitution for Education: Successful completion of at least 60 semester or 90 quarter units from an accredited college or university which included at least one three semester unit course in each of the following areas: (1) English Composition (2) Business or public administration, political science or government (3) Mathematics or Statistics and (4) Psychology or behavioral science; and two years full time experience or its equivalent in an administrative or staff capacity performing administrative, personnel or budgetary analysis which included the research, analysis and preparation of written reports; or an acceptable combination of qualifying experience beyond the two-year minimum education requirement may be substituted for the Bachelor’s degree.

Substitution for Academic Major and Experience: 1) One (1) additional year of qualifying experience may be substituted for the required academic required major; 2) Possession of a Master’s degree in public administration, business administration, or a closely related field may be substituted for the academic major or six months of the required experience.

Supplemental information

1. Application Filing and Evaluation: Applicants must complete a supplemental questionnaire at the time of application. All materials will be reviewed to determine whether candidates meet the minimum qualifications. Only those who meet the minimum qualifications will move forward in the selection process.
   
   
2. Online Multiple-Choice Examination: Qualified candidates will be invited to complete an online multiple-choice assessment designed to measure key competencies required for the Administrative Services Assistant III position, including: Attention to Detail and Professional & Technical Expertise. The assessment will be conducted remotely. Candidates must have access to a computer with a reliable internet connection. Taking the assessment on a mobile device is not recommended. Tentatively scheduled for 9/23/2026 - 9/28/2026 (Weighted 100%)
   
   
3. Final Selection Interviews: These will be scheduled by the department once the eligible list is established.

Assessment Retake Policy:

• Candidates who take this assessment and later apply for another Contra Costa County recruitment that uses the same exam, will not be permitted to retake the test if the subsequent exam is scheduled within six (6) months of the original test date.
• If more than six (6) months has passed since the date of the original assessment, candidates will be required to retake the exam.

Contra Costa County is committed to providing equal access and opportunity to qualified individuals with disabilities in its employment practices. If you believe you may anticipate needing reasonable accommodation, please visit our job seeker resources page at: Special Testing Accommodations | Contra Costa County, CA Official Website