Custodian Supervisor I

Job Description and Duties

The first review of applications will take place on September 18, 2026, and every Friday thereafter until filled.

Please Note: All information provided on the STD 678 application is subject to verification at any time during the recruitment process, hiring process, and even after employment has been offered or begun. Incomplete or vague information may delay the review process or impact your eligibility.

To ensure your application is complete and accurately reflects your qualifications, please make sure to include the following:

Detailed Duties: For each position listed, clearly describe the specific duties you performed.

Specific Dates: Provide the exact start and end dates (month/day/year) for each job.

Hours Worked: Indicate the number of hours worked per week for each position, including part-time work.

While not required, a resume is strongly encouraged to provide additional details about your skills and experience. Resumes will not replace the required STD 678 Employment Application.

This position is located in Los Angeles.

This is an exciting, opportunity to join our team at the California Science Center (CSC), a world-class science museum, that develops and features award-winning exhibits and internationally renowned education programs. The Science Center's workforce includes executive, managerial, supervisory, and administrative classifications, however, rank and file facility maintenance and skilled trades represent approximately fifty-one percent (51%) of its civil service workforce. We are seeking a Custodian Supervisor I to join our day shift team.

The duties of the Custodian Supervisor I include, but are not limited to, coordinating and leading the activities of a crew of 5-7 Custodian I staff, including maintaining and cleaning offices, restrooms, buildings, and other assigned areas, ensuring all assigned areas are clean and orderly throughout State property; and operating a variety of cleaning tools and equipment. The Custodian Supervisor I is the first point of contact for all personnel related tasks, including timekeeping, performance management, health and safety, and training.

Apply today to join our team! We especially encourage veterans, women and persons with disabilities to apply. We actively cultivate an inclusive atmosphere that embraces individuals from diverse backgrounds, cultures, and life journeys, empowering them to excel and flourish. We enthusiastically welcome your distinctive contributions to our organization and the meaningful work we undertake.

To attain list eligibility, you must take the Custodian Supervisor I exam located at the link here: 

Some classifications offer an alternate exam option for persons with certified disabilities called the Limited Exam and Appointment Program (LEAP). To be eligible to take a LEAP exam, you must certify through California Department of Rehabilitation (DOR). To take the LEAP Custodian I exam please click the link here:

Apply today to join our team! We especially encourage veterans, women and persons with disabilities to apply. Visit our website at to learn more about us.

You will find additional information about the job in the .

Working Conditions

PLEASE REFER TO DUTY STATEMENT IN THE WORK ENVIRONMENT SECTION.

Special Requirements

The selected candidate will be required to submit to pre-employment hiring clearances which include the following: Department of Justice Livescan fingerprint and medical testing for tuberculosis, complete physical and drug testing, within three business days of receipt of a conditional offer of employment.

Desirable Qualifications

In addition to evaluating each candidate's relative ability, as demonstrated by quality and breadth of experience, the following factors will provide the basis for competitively evaluating each candidate:

• Professional cleaning experience in a lead or supervisor capacity, including experience assigning, coordinating, monitoring, or reviewing the work of custodial staff.

• Knowledge of custodial practices, methods, materials, supplies, equipment, and techniques, including the safe and effective use of cleaning chemicals, tools, and janitorial equipment.

• Knowledge of workplace safety practices and procedures, applicable to custodial operations, including the proper handling, storage, labeling, and disposal of cleaning chemicals and hazardous materials.

• Ability to plan, organize, prioritize, assign, and monitor custodial work to ensure facilities are maintained in a clean, safe, sanitary, and orderly condition, and service standards are met.

• Ability to lead, train, coach, and provide direction to custodial employees, including communicating work expectations, demonstrating proper work methods, providing constructive feedback, and addressing performance or work-quality concerns.

• Ability to use tact, diplomacy, sound judgment, and professionalism when communicating and working with customers, co-workers, management, vendors, and other government agency representatives.

• Demonstrated reliability and dependability, including consistent attendance and punctuality.

• Strong interpersonal skills and experience working in a team environment, with the ability to establish and maintain effective working relationships.

• Experience safely and effectively operating a variety of janitorial and custodial equipment.

• Ability to read and interpret documents such as safety rules, Safety Data Sheets (SDS), operating and maintenance instructions, product labels, policies, procedure manuals, schedules, and other written materials related to custodial operations.

• Ability to work within demanding time frames, manage competing priorities, and adjust work assignments as operational needs change.

• Ability to maintain a professional, respectful, and services-oriented approach when interacting with employees, customers, co-workers, management, vendors, and other government representatives.

Benefits

Benefit information can be found on the CalHR website and the CalPERS website.

California Science Center employees enjoy unique benefits, such as employee discounts on merchandise, concessions and summer camp, exhibit preview days, and reciprocal admission to local museums.

Free parking is available to employees. The building is within close distance to public transportation, including the Metro Expo Line and a variety of restaurants.

ELIGIBILITY AND ADDITIONAL INFORMATION

To be considered for the job vacancy you MUST satisfy one of the following requirements:

Transfer Eligibility – Must have current employment with the State of California in the same classification or in a classification that is comparable. If in a different classification, you must meet the minimum qualifications (see Minimum Qualifications section and associated links above).

Reinstatement Eligibility – Previously obtained permanent employment with the State of California in the same classification or in a classification that is comparable. If in a different classification, you must meet the minimum qualifications (see Minimum Qualifications section and associated links above).

To become 'list eligible' for consideration, interested candidates must successfully pass a civil service exam. You may apply and take the exam online at CalCareers, copy or click on the following link:  

*MINIMUM QUALIFICATIONS will be verified prior to being scheduled for an interview. Please refer to Minimum Qualifications on the bulletin when applying.

*Applications with "SEE RESUME" or "SEE ATTACHED" will not be considered.
*Faxed or emailed applications will not be accepted.

Required Application Package Documents

The following items are required to be submitted with your application. Applicants who do not submit the required items timely may not be considered for this job:

• Current version of the State Examination/Employment Application STD Form 678 (when not applying electronically), or the Electronic State Employment Application through your Applicant Account at All Experience and Education relating to the Minimum Qualifications listed on the Classification Specification should be included to demonstrate how you meet the Minimum Qualifications for the position.
• Resume is optional. It may be included, but is not required.